Foldable-screen electronic device and antenna device thereof

Abstract

The application provides a folding screen electronic device and an antenna device thereof. In a folding state, the folding screen electronic device can divide the parasitic radiators of each main radiation in the antenna according to a communication scene, and can adjust the operating frequency of each radiator in the antenna (including the main radiator) according to a preset frequency modulation rule, so that the current direction of each parasitic radiator of the main radiator in the antenna and the current direction of the main radiator meet the expected target current direction, thereby improving the performance of the antenna (including the main radiator).

Description

[0001] This application is a divisional of the Chinese Patent Application No. 202310389830.7, filed on April 3, 2023, and titled "FOLDABLE SCREEN ELECTRONIC DEVICE AND ANTENNA DEVICE THEREOF", the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of antennas, and in particular to a foldable screen electronic device and an antenna device thereof. BACKGROUND

[0003] Foldable screen electronic devices provide users with rich interaction modes and novel appearances. Foldable screen electronic devices include foldable electronic devices, such as foldable mobile phones, etc. Antennas are arranged in foldable screen electronic devices to support communication between the foldable screen electronic devices and other electronic devices. Generally, when the foldable screen electronic device is in an unfolded state, the antenna performance is good; but when the foldable screen electronic device is in a folded state, the antenna performance is poor. The reason is that the antenna is made of metal, and its radiation performance is disturbed by other metal objects. Therefore, a clean space (referred to as a clearance area) is usually left around the antenna to ensure the radiation performance of the antenna. In the case of the foldable screen electronic device from the unfolded state to the folded state, the two device main bodies block each other, resulting in a smaller and smaller clearance area, and the antenna performance deteriorates accordingly. SUMMARY

[0004] The present application provides a foldable screen electronic device and an antenna device thereof. The antenna device in the foldable screen electronic device can make the antenna have good performance when the electronic device is in a folded state.

[0005] In a first aspect, the present application provides a foldable screen electronic device, which includes a first device main body and a second device main body. The first device main body and the second device main body are connected by a rotating shaft. A first antenna branch is arranged along the frame of the first device main body, and a second antenna branch is arranged along the frame of the second device main body. The first antenna branch has two open ends, and a first ground terminal and a second ground terminal are arranged on the first antenna branch. The first ground terminal and the second ground terminal are close to each other. The first ground terminal is close to the first open end of the first antenna branch, and the second ground terminal is close to the second open end of the first antenna branch. The first antenna branch has a first feeding point, which is arranged between the first ground terminal and the first open end. The second antenna branch has two open ends, and a third ground terminal and a fourth ground terminal are arranged on the second antenna branch. The third ground terminal and the fourth ground terminal are close to each other. The third ground terminal is close to the third open end of the second antenna branch, and the fourth ground terminal is close to the fourth open end. When the foldable screen electronic device is in a folded state, the projection of the first antenna branch on the second device main body overlaps with the second antenna branch.

[0006] In some embodiments, the first device body can be the first device body 100 in the specification, and the second device body can be the second device body 200 in the specification. The first antenna branch can be understood as the total of all radiation segments on the first device body, and the second antenna branch can be understood as the total of all radiation segments on the second device body. The radiation segment here can be understood as the radiator in the specification. The open end can be the opening end involved in the specification. For example, the first open end can be understood as the opening end 103a in the specification, the second open end can be the opening end 103c in the specification, the third opening end can be the opening end 203b in the specification, and the fourth opening end can be the opening end 203d in the specification. The first ground end can be the ground end 102a in the specification, the second ground end can be the ground end 102c in the specification, the third ground end can be the ground end 202b in the specification, and the fourth ground end can be the ground end 202d in the specification. The first feeding point can be understood as the feeding point 104a involved in the specification. The first radiation segment can be understood as the radiator A in the specification, the second radiation segment can be understood as the radiator B in the specification, the third radiation segment can be understood as the radiator C in the specification, and the fourth radiation segment can be understood as the radiator D in the specification.

[0007] In the antenna device involved in the above embodiments, two adjacent and close ground ends are arranged in one antenna branch, and one antenna branch can be used as two radiation segments. In the first antenna branch and the second antenna branch, the radiation segment without the feeding point can be used as the coupled radiation segment (parasitic radiation segment) of the radiation segment with the feeding point. In the folded state, there is an overlap between the two antenna branches, which can make the coupling effect of the two antenna branches better in the folded state. Such a design can improve the performance of the antenna (including the first feeding point) of the electronic device in the folded state. Moreover, the first antenna branch and the second antenna branch are open at both ends, and other radiation segments can be further included, which creates conditions for setting different operating frequencies based on different radiation segments. Moreover, the radiator B overlaps the radiator A, so that the coupling effect of the radiator B and the radiator A is better, and the radiator A is more likely to have a positive parasitic radiation effect. In this way, the performance of the antenna can be improved when the antenna is working.

[0008] In combination with the first aspect, in some embodiments, the projection of the second radiation segment on the second device body does not overlap with the third radiation segment.

[0009] In some embodiments, when the electronic device is in the folded state, there is no overlap between the radiator B and the radiator C. This can reduce the mutual interference between the radiator C and the radiator B. In this way, the performance of the antenna can be further improved when the antenna is working.

[0010] In some embodiments of the first aspect, the first antenna branch is distributed along an L-shaped frame of the first device body, and the second antenna branch is distributed along an L-shaped frame of the second device body.

[0011] In the above embodiments, the L-shaped frame can be the frame at the corner involved in the description. There is a meander-shaped arrangement of the radiators.

[0012] In some embodiments of the first aspect, the first radiation section is distributed with a first current, the second radiation section is distributed with a current in the same direction as the first current, the third radiation section is distributed with a current in the same direction as the first current, and the fourth radiation section is distributed with a current in the opposite direction of the first current.

[0013] In the above embodiments, when the antenna branches are distributed along the L-shaped frame, the first radiation section is a main radiation section, and the second, third, and fourth radiation sections are parasitic radiation sections of the first radiation section. The working frequency band of the first radiation section can be a wifi 2.4G frequency band. When the fourth radiation section and the first radiation section are not parallelly arranged, and the current distributed on the fourth radiation section is opposite to the current distributed on the first radiation section, the fourth radiation section can have a positive parasitic radiation effect on the first radiation section to improve the performance of the antenna. When the currents distributed on the other radiation sections and the first radiation section are in the same direction, the other radiation sections can have a positive parasitic radiation effect on the first radiation section.

[0014] In some embodiments of the first aspect, the first antenna branch is distributed along a straight frame of the first device body, and the second antenna branch is distributed along a straight frame of the second device body.

[0015] In the above embodiments, when the antenna branches are distributed along the straight frame, the radiation sections in different device bodies are arranged in parallel.

[0016] In some embodiments of the first aspect, the first radiation section is distributed with a first current, and the second, third, and fourth radiation sections are all distributed with a current in the same direction as the first current.

[0017] In the above embodiments, the first radiation section is a main radiation section, and the working frequency band of the first radiation section can be a wifi 2.4G frequency band. The other radiation sections are parasitic radiation sections of the first radiation section. When the currents distributed on the other radiation sections and the first radiation section are in the same direction as the current distributed on the first radiation section, the other radiation sections can have a positive parasitic radiation effect on the first radiation section to improve the performance of the antenna.

[0018] In some embodiments of the first aspect, the first antenna branch further comprises a fifth radiation segment, and the second antenna branch further comprises a sixth radiation segment; the fifth radiation segment and the third radiation segment are separated by a gap; the fifth radiation segment is provided with a grounding end; the sixth radiation segment and the fourth radiation segment are separated by a gap; and the sixth radiation segment is provided with a grounding end.

[0019] In some embodiments, the fifth radiation segment can be understood as the radiator E in the description, and the sixth radiation segment can be understood as the radiator F in the description.

[0020] In the above embodiments, the antenna branches are coupled by the gaps, and more radiation ends are included. When the main radiation segment is working, the main radiation segment can have more parasitic radiation segments that have a positive radiation effect, so as to further improve the performance of the antenna. Moreover, the more radiation segments create conditions for setting different working frequencies based on different radiation segments.

[0021] In some embodiments of the first aspect, when the foldable-screen electronic device is in the folded state, the projection of the fifth radiation segment on the second device body overlaps with the sixth radiation segment.

[0022] In the above embodiments, the fifth radiation segment and the sixth radiation segment overlap, so that the coupling effect of the fifth radiation segment and the sixth radiation segment is better. For example, when the electronic device is in the folded state and one of the fifth radiation segment and the sixth radiation segment is the main radiation segment and the other is the parasitic radiation segment, the radiator as the parasitic radiation segment can provide better parasitic radiation effect for the main radiation segment.

[0023] In some embodiments of the first aspect, the fifth radiation segment and the sixth radiation segment are both provided with a current that is in the same direction as the first current.

[0024] In the above embodiments, the fifth radiation segment and the sixth radiation segment are both used as parasitic radiation segments of the first radiation segment. When the fifth radiation segment and the sixth radiation segment have currents in the same direction as the first radiation segment, the fifth radiation segment and the sixth radiation segment can have a positive parasitic radiation effect on the first radiation segment, so as to improve the performance of the antenna. The working frequency (working frequency A) of the first radiation segment can belong to the wifi 2.4G frequency band.

[0025] In some embodiments of the first aspect, the third radiation segment is connected to a first tuning circuit; the fourth radiation segment is connected to a second tuning circuit; the fifth radiation segment is connected to a third tuning circuit; and the sixth radiation segment is connected to a fourth tuning circuit.

[0026] In the above embodiments, the tuning circuit can be the frequency control circuit in the description. When the radiation segment is connected to the tuning circuit, the radiation segment can have more frequencies.

[0027] With reference to the first aspect, in some embodiments, the second radiation section is connected to a fifth tuning circuit.

[0028] In the above embodiments, the tuning circuit can be a frequency control circuit. In the case where the second radiation section is connected to the tuning circuit, the second radiation section can have more frequencies.

[0029] With reference to the first aspect, in some embodiments, the current distributed on the second radiation section includes a first frequency current and a second frequency current; the first frequency and the second frequency are working frequencies of the first radiation section.

[0030] In some embodiments, the first frequency can be a wifi 2.4G frequency band, and the second frequency can be a GPS frequency band.

[0031] In the above embodiments, the fifth tuning circuit can make the second radiation section have two specific frequencies. Resonance at one of the two frequencies can make the current distributed on the second radiation section be the first frequency current. The first frequency current is the current excited in the second radiation section when the first radiation section resonates at the first frequency (i.e., the working frequency is the first frequency). Resonance at the other frequency can make the current distributed on the second radiation section be the second frequency current. The second frequency current is the current excited in the second radiation section when the first radiation section resonates at the second frequency (i.e., the working frequency is the second frequency).

[0032] With reference to the first aspect, in some embodiments, the fifth radiation section is further provided with a second feeding point.

[0033] In some embodiments, the second feeding point can be the feeding point 104e in the description. In the above embodiments, in the case where the fifth radiation section is provided with the feeding point, the antenna can have more working frequency bands, thereby providing more communication modes for the electronic device.

[0034] With reference to the first aspect, in some embodiments, the excitation source connected to the first feeding point emits an excitation signal, and the excitation source connected to the second feeding point does not emit an excitation signal; wherein the excitation source connected to the first feeding point is different from the excitation source connected to the second feeding point.

[0035] In the above embodiments, although the second feeding point is provided on the fifth radiation section, the excitation source connected to the second feeding point does not emit an excitation signal, which can be understood as that the electronic device does not use (does not turn on) the communication mode corresponding to the working frequency band of the fifth radiation section.

[0036] In some embodiments of the first aspect, the L-shaped frame specifically includes a horizontal frame and a vertical frame, the horizontal frame being perpendicular to the vertical frame; when the fifth radiation section is specifically arranged at the vertical frame and the first radiation section is specifically arranged at the horizontal frame, the first radiation section is distributed with a second current, the second radiation section is distributed with a current in the same direction as the second current, and the fourth radiation section is distributed with a current in the opposite direction of the second current; and the fifth radiation section is distributed with a third current, and the sixth radiation section is distributed with a current in the same direction as the third current.

[0037] In some embodiments of the first aspect, when the fifth radiation section and the first radiation section are arranged at the corner frame, the first radiation section and the fifth radiation section are both provided with a feeding point, and the first radiation section and the fifth radiation section can both serve as a main radiation section. The working frequency (working frequency A) of the first radiation section can belong to the wifi 2.4G frequency band. The working frequency (working frequency C) of the fifth radiation section can belong to the B41 frequency band.

[0038] In the above embodiments, the electronic device can reasonably allocate the parasitic radiation sections of the first radiation section and the fifth radiation section, so that each main radiation section is specifically provided with a parasitic radiation section. In this way, the electronic device can better use the communication mode corresponding to the working frequency band of the first radiation section and the communication mode corresponding to the fifth radiation section. For example, according to the distance from the main radiation section, the first radiation section can be mainly provided with the second radiation section and the fourth radiation section as the parasitic radiation sections. The fifth radiation section can be mainly provided with the sixth radiation section as the parasitic radiation section.

[0039] In some embodiments of the first aspect, the current distributed on the third radiation section is weaker than the second current and the third current.

[0040] In the above embodiments, the third radiation section is arranged between the two main radiation sections (the first radiation section and the fifth radiation section). When the currents distributed on the first radiation section and the fifth radiation section are in opposite directions, if the current of the third radiation section is strong, it will have an adverse effect on one of the main radiation sections. Therefore, the current distributed on the third radiation section being weak can avoid interference with the radiation body A or the radiation body E.

[0041] In some embodiments of the first aspect, no current is distributed on the third radiation section.

[0042] In the above embodiments, the third radiation section is arranged between the two main radiation sections (the first radiation section and the fifth radiation section). When the currents distributed on the first radiation section and the fifth radiation section are in opposite directions, if the current of the third radiation section is strong, it will have an adverse effect on one of the main radiation sections. Therefore, no current being distributed on the third radiation section can avoid interference with the radiation body A or the radiation body E.

[0043] In some embodiments of the first aspect, when the fifth radiation section and the first radiation section are arranged in a straight line, the first radiation section and the fifth radiation section are provided with feeding points, and the first radiation section and the fifth radiation section can serve as main radiation sections. The working frequency (working frequency A) of the first radiation section can belong to the wifi 2.4G frequency band. The working frequency (working frequency C) of the fifth radiation section can belong to the B41 frequency band.

[0044] In some embodiments of the first aspect, when the fifth radiation section and the first radiation section are arranged in a straight line, the first radiation section and the fifth radiation section are provided with feeding points, and the first radiation section and the fifth radiation section can serve as main radiation sections. The working frequency (working frequency A) of the first radiation section can belong to the wifi 2.4G frequency band. The working frequency (working frequency C) of the fifth radiation section can belong to the B41 frequency band.

[0045] In the above embodiments, the electronic device can reasonably allocate the parasitic radiation sections of the first radiation section and the fifth radiation section, so that each main radiation section has a specific parasitic radiation section. In this way, the electronic device can better use the communication mode corresponding to the working frequency band of the first radiation section and the communication mode corresponding to the fifth radiation section. For example, the main parasitic radiation sections of the first radiation section can include the second radiation section, the fourth radiation section, and the sixth radiation section. The main parasitic radiation section of the fifth radiation section can include the third radiation section. Because the second radiation section and the sixth radiation section are arranged in a straight line, the second radiation section and the sixth radiation section can serve as a parasitic radiation section with the second radiation section as the main one, and the sixth radiation section can also serve as a parasitic radiation section of the first radiation section together with the second radiation section to improve the performance of the first radiation section.

[0046] In some embodiments of the first aspect, the third radiation section is further provided with a third feeding point.

[0047] In the above embodiments, the third feeding point can be the feeding point 404e in the specification. In some embodiments, when the third radiation section is provided with a feeding point, the antenna can have more working frequency bands, thereby providing more communication modes for the electronic device.

[0048] In some embodiments of the first aspect, the L-shaped frame specifically includes a horizontal frame and a vertical frame, the horizontal frame being perpendicular to the vertical frame; when the third radiation section is specifically arranged on the vertical frame and the first radiation section is specifically arranged on the horizontal frame, the first radiation section is distributed with a fourth current, the second radiation section is distributed with a current in the same direction as the fourth current, and the fourth radiation section is distributed with a current in the opposite direction of the fourth current; and the third radiation section is distributed with a fifth current, and the fifth radiation section and the sixth radiation section are distributed with currents in the same direction as the fifth current.

[0049] In some embodiments, when the third radiation section and the first radiation section are arranged at the corner frame, the first radiation section and the third radiation section are each provided with a feeding point, so that the first radiation section and the third radiation section can each serve as a main radiation section. The working frequency (working frequency A) of the first radiation section can belong to the wifi 2.4G frequency band. The working frequency (working frequency C) of the third radiation section can belong to the B41 frequency band.

[0050] In the above embodiments, the electronic device can reasonably allocate the parasitic radiation sections of the first radiation section and the fifth radiation section, so that each main radiation section is specifically provided with a parasitic radiation section. In this way, the electronic device can better use the communication mode corresponding to the working frequency band of the first radiation section and the communication mode corresponding to the third radiation section. For example, according to the distance from the main radiation section, the main parasitic radiation section of the first radiation section can include the second radiation section and the fourth radiation section. The main parasitic radiation section of the third radiation section can include the fifth radiation section and the sixth radiation section.

[0051] In some embodiments of the first aspect, the excitation source connected to the first feeding point and the excitation source connected to the second feeding point each emit radio frequency signals; and the excitation source connected to the first feeding point is different from the excitation source connected to the second feeding point.

[0052] In the above embodiments, the fifth radiation section and the first radiation section are each provided with a feeding point, and the excitation sources connected to the two feeding points each emit excitation signals. It can be understood that the electronic device uses (turns on) the communication mode corresponding to the working frequency band of the fifth radiation section and the communication mode corresponding to the working frequency band of the first radiation section. At this time, the communication performance of the electronic device under the two communication modes is better.

[0053] In some embodiments of the first aspect, the excitation source connected to the first feeding point and the excitation source connected to the third feeding point each emit radio frequency signals; and the excitation source connected to the first feeding point is different from the excitation source connected to the third feeding point.

[0054] In the above embodiment, the third radiation section and the first radiation section are both provided with a feed point, and the excitation sources connected to the two feed points both emit excitation signals, which can be understood as that the electronic device uses (turns on) the communication mode corresponding to the working frequency band of the fifth radiation section and the communication mode corresponding to the working frequency band of the first radiation section. At this time, the communication performance of the electronic device under the two communication modes is better.

[0055] In combination with the first aspect, in some embodiments, the first antenna branch further includes a seventh radiation section, and the second antenna branch further includes an eighth radiation section; the seventh radiation section is provided with a gap with the first radiation section; the seventh radiation section is provided with a ground terminal; the eighth radiation section is provided with a gap with the second radiation section; and the eighth radiation section is provided with a ground terminal.

[0056] In some embodiments, the seventh radiation section can be understood as the radiation body G in the description, and the eighth radiation section can be understood as the radiation body H in the description.

[0057] In the above embodiment, the antenna branches are coupled through the gap, include more radiation terminals, and can have more parasitic radiation sections that have a positive radiation effect when the main radiation section works, so as to further improve the antenna performance. In addition, the more radiation sections create conditions for setting different working frequencies based on different radiation sections.

[0058] In combination with the first aspect, in some embodiments, when the foldable-screen electronic device is in the folded state, the projection of the seventh radiation section on the second device body overlaps with the eighth radiation section.

[0059] In the above embodiment, the seventh radiation section overlaps with the eighth radiation section, so that the coupling effect of the seventh radiation section and the eighth radiation section is better. For example, when the electronic device is in the folded state and one of the seventh radiation section and the eighth radiation section is the main radiation section and the other is the parasitic radiation section, the radiation body as the parasitic radiation section can provide better parasitic radiation effect for the main radiation section.

[0060] In combination with the first aspect, in some embodiments, the seventh radiation section and the second radiation section are in the same direction of the current distribution.

[0061] In the above embodiment, the seventh radiation section and the second radiation section can be regarded as a parasitic radiation section with the second radiation section as the main radiation section.

[0062] In combination with the first aspect, in some embodiments, the eighth radiation section is further provided with a fourth feed point.

[0063] In some embodiments, the fourth feeding point can be the feeding point 104g in the specification. In the above embodiments, the antenna can have more working frequency bands when the seventh radiation section is provided with the feeding point, thereby providing more communication modes for the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 A set of schematic diagrams of the electronic device in the folded state and the unfolded state are shown;

[0065] Figure 2 A fixed setting in different antenna structures is shown;

[0066] Figure 3 An example diagram of the first antenna structure is shown;

[0067] Figure 4 An example setting of each radiator in the electronic device when the first antenna structure is shown;

[0068] Figure 5A A comparison diagram of the current direction in the wifi single-state scenario and the low-performance scenario 11 is shown in FIG.

[0069] Figure 5B An example current distribution simulation diagram of the electronic device in the wifi single-state is shown;

[0070] Figure 6 A schematic diagram of a preset frequency modulation rule 21a is shown;

[0071] Figure 7 A comparison diagram of the frequency modulation rule involved in the wifi single-state scenario and the low-performance scenario 11 is shown;

[0072] Figure 8 A setting diagram of the frequency control circuit involved in the wifi single-state scenario and the low-performance scenario 11 is shown;

[0073] Figure 9 A comparison diagram of the radiation efficiency and system efficiency of the antenna 2 of the electronic device in the wifi single-state scenario and the low-performance scenario 11 obtained during the simulation effect test is shown;

[0074] Figure 10 A comparison diagram of the current direction in the wifi and B41 coexistence state scenario and the low-performance scenario 12 is shown in FIG.

[0075] Figure 11 An example current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band of the electronic device in the wifi and B41 coexistence state scenario is shown;

[0076] Figure 12A schematic diagram of a preset frequency adjustment rule 21b is shown.

[0077] Figure 13 A comparison diagram of the frequency adjustment rule in a wifi single-state scenario and a low-performance scenario 12 is shown.

[0078] Figure 14 A schematic diagram of the frequency control circuit setting involved in a wifi single-state scenario and a low-performance scenario 12 is shown.

[0079] Figure 15 A comparison diagram of the efficiency of the antenna 2 in a wifi and B41 coexistence scenario and a low-performance scenario 12 obtained by the electronic device during simulation effect testing is shown.

[0080] Figure 16 A comparison diagram of the efficiency of the antenna 1 in a wifi and B41 coexistence scenario and a low-performance scenario 11 obtained by the electronic device during simulation effect testing is shown.

[0081] Figure 17 An example diagram of a second antenna structure is shown.

[0082] Figure 18 An example setting of the first antenna structure in the electronic device is shown.

[0083] Figure 19A A comparison diagram of the current direction in a wifi single-state scenario and a low-performance scenario 21 is shown.

[0084] Figure 19B An example current distribution simulation diagram of the electronic device in a wifi single-state is shown.

[0085] Figure 20 A schematic diagram of a preset frequency adjustment rule 22a is shown.

[0086] Figure 21 A comparison diagram of the frequency adjustment rule in a wifi single-state scenario and a low-performance scenario 21 is shown.

[0087] Figure 22 A schematic diagram of the frequency control circuit setting involved in a wifi single-state scenario and a low-performance scenario 21 is shown.

[0088] Figure 23 A comparison diagram of the radiation efficiency of the antenna 2 and the system efficiency in a wifi single-state scenario and a low-performance scenario 21 obtained by the electronic device during simulation effect testing is shown.

[0089] Figure 24 A schematic diagram of a target current direction 22 is shown.

[0090] Figure 25An exemplary current distribution simulation diagram of each radiator mainly responsible for the 2.4G frequency band of the electronic device in the wifi and B41 coexistence state is shown.

[0091] Figure 26 A schematic diagram of a preset frequency modulation rule 22b is shown.

[0092] Figure 27 A comparison schematic diagram of the frequency modulation rule in the wifi and B41 coexistence state and the low performance scenario 22 is shown.

[0093] Figure 28 A schematic diagram of the frequency control circuit setting involved in the wifi and B41 coexistence state and the low performance scenario 22 is shown.

[0094] Figure 29 A comparison diagram of the efficiency of the antenna 2 and a comparison diagram of the efficiency of the antenna 1 of the electronic device in the wifi and B41 coexistence state and the low performance scenario 22 obtained during the simulation effect test are shown.

[0095] Figure 30 A comparison diagram of the efficiency of the antenna 1 of the electronic device in the wifi and B41 coexistence state and the low performance scenario 11 obtained during the simulation effect test is shown.

[0096] Figure 31 An example diagram of a third antenna structure is shown.

[0097] Figure 32 A target current direction 31 involved in the wifi single state scenario is shown.

[0098] Figure 33 An exemplary current distribution simulation diagram of each radiator of the electronic device in the wifi single state scenario is shown.

[0099] Figure 34 A schematic diagram of a preset frequency modulation rule 23a is shown.

[0100] Figure 35 A comparison diagram of the radiation efficiency of the antenna 2 and a comparison diagram of the system efficiency of the electronic device in the wifi single state scenario obtained during the simulation effect test are shown.

[0101] Figure 36 A target current direction 32 involved in the wifi and B41 coexistence state is shown.

[0102] Figure 37A And Figure 37B An exemplary current distribution simulation diagram of each radiator of the electronic device in the wifi and B41 coexistence state is shown.

[0103] Figure 38A frequency diagram showing the radiators mainly responsible for the B41 band is shown;

[0104] Figure 39 A comparison chart of the efficiency of the electronic device in the wifi and B41 coexistence state and the low performance state 12 obtained when the simulation effect test is performed is shown;

[0105] Figure 40 An exemplary antenna structure involved in the MHB single state scenario is shown;

[0106] Figure 41 An exemplary frequency modulation rule involved in the MHB single state scenario is shown;

[0107] Figure 42 Another schematic diagram of adding a frequency control circuit is shown;

[0108] Figure 43 And Figure 44 An example diagram showing the reason for improving the performance of the antenna is shown;

[0109] Figure 45 A schematic diagram of the current distribution of the radiators A-F in the case where the electronic device is in the wifi single state is shown;

[0110] Figure 46 A schematic diagram of the current distribution of the radiators A-F in the case where the electronic device is in the wifi single state is shown;

[0111] Figure 47 A schematic diagram of the current distribution of the radiators A-F in the case where the electronic device is in the wifi and B41 coexistence state is shown;

[0112] Figure 48 A schematic diagram of the current distribution of the radiators A-F in the case where the electronic device is in the wifi and B41 coexistence state is shown. DETAILED DESCRIPTION

[0113] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and the appended claims of the application, the singular forms "a," "an" and "the" are intended to include both singular and plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used in the specification and in the claims, are used to mean any one of the items in the list or all of them. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0114] Hereinafter, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are merely used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0115] In the description of the present application, it should be explained that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be explained that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0116] The embodiments of the present application provide a folding screen electronic device, which is provided with an antenna set. The antenna set can include at least two antennas. Any antenna in the antenna set can include at least one radiator (provided with a feed point), which can be used to receive electromagnetic wave signals and emit electromagnetic wave signals. Different antennas in the antenna set can provide at least one communication mode for the folding screen electronic device alone or in combination with other antennas. The folding screen electronic device adjusts the working frequency of each antenna according to a preset frequency adjustment rule 1 to realize communication with other electronic devices through different communication modes. The communication modes include but are not limited to one or a combination of the following communication modes: 2G / 3G / 4G / 5G cellular network communication, global positioning system (GPS) communication, wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network) communication, Bluetooth (BT) communication and the like.

[0117] When the electronic device is in the folded state, the operating frequencies of the antennas are adjusted according to the preset frequency adjustment rule 1, and the communication mode of the folding screen electronic device is communication mode A, the performance of the antenna responsible for providing the communication mode A may be low. When the performance of the antenna (antenna A) responsible for providing the communication mode A is low, the communication ability of the folding screen electronic device when communicating with other electronic devices in the communication mode A is poor. To solve this problem, when the communication mode of the folding screen electronic device is the communication mode A, the operating frequency of the antenna A can be adjusted again according to the preset frequency adjustment rule 2, or the operating frequencies of the antenna A and the antenna coupled thereto are adjusted to improve the performance of the antenna A, thereby improving the communication ability of the folding screen electronic device when communicating with other electronic devices in the communication mode A. The preset frequency adjustment rule 2 is different from the preset frequency adjustment rule 1.

[0118] The antenna set includes at least two antennas, which are respectively denoted as antenna 1 and antenna 2. In addition to the antenna 1 and the antenna 2, the antenna set can also include other antennas, such as an antenna 3. The following content is described by taking the antenna set including the antenna 1 to the antenna 3 as an example.

[0119] It should be understood here that the antennas in the antenna set can have different antenna structures. When the antenna structures are different, the folding screen electronic device can adjust the operating frequencies of the antenna A and the antenna coupled thereto according to different preset frequency adjustment rules 2 to improve the communication ability of the folding screen electronic device when communicating with other electronic devices in the communication mode A.

[0120] The differences between the two antenna structures include but are not limited to the following: the arrangement of the radiators in the two antenna structures is different, or the frequency control circuit connected to the radiators in the two antenna structures is different.

[0121] The arrangement of the radiators in the antenna set includes but is not limited to the following two arrangements:

[0122] Arrangement 1: The radiators are arranged in a straight line. For example, all the radiators are arranged in the vertical frame of the folding screen electronic device, or all the radiators are arranged in the horizontal frame of the folding screen electronic device.

[0123] Arrangement 2: The radiators are arranged in a zigzag shape (for example, L-shaped). For example, the radiators can be arranged in the frame at the corner of the folding screen electronic device. That is, part of the radiators in the antenna are arranged in the horizontal frame, and the other radiators are arranged in the vertical frame.

[0124] The coupling mode between the radiators in the antenna includes coupling through a gap.

[0125] Hereinafter, the folding screen electronic device is referred to as an electronic device for convenience of description.

[0126] Figure 1 A set of schematic diagrams of the electronic device in the folded state and the unfolded state are shown.

[0127] As Figure 1 A schematic diagram of the electronic device in the folded state is shown in FIG. 1. The electronic device includes a first device body 100, a second device body 200, a rotating shaft 300, a first floor plate (not shown in FIG. 1), a second floor plate (not shown in FIG. 1), a first main plate (not shown in FIG. 1), and a second main plate (not shown in FIG. 1). Figure 1 Figure 1 Figure 1 Figure 1

[0128] The first device body 100 and the second device body 200 are rotationally connected by the rotating shaft 300, so that the electronic device can be switched between the unfolded state and the folded state. The first floor plate is arranged in the first device body 100, and the second floor plate is arranged in the second device body 200. The first main plate and the second main plate are arranged in the first device body 100 and the second device body 200, respectively.

[0129] In some possible cases, the first device body 100 is the device body on which the main screen of the electronic device is located, and the second device body 200 is the device body on which the sub-screen of the electronic device is located. Of course, it can be understood by those skilled in the art that in other cases, the first device body 100 can be the device body on which the sub-screen of the electronic device is located, and the second device body 200 can be the device body on which the main screen of the electronic device is located, which does not limit the protection scope of the present application.

[0130] In the embodiments of the present application, the electronic device is exemplified by a foldable mobile phone. Of course, it can be understood by those skilled in the art that in alternative other embodiments, the electronic device can also be a foldable tablet computer or a foldable smart watch or other foldable screen electronic device, which does not limit the protection scope of the present application.

[0131] As Figure 1 A schematic diagram of the electronic device in the folded state is shown in FIG. 2. The first device body 100 and the first floor plate therein are arranged on one side of the rotating shaft 300. The second device body 200 and the second floor plate therein are arranged on the other side of the rotating shaft 300.

[0132] In combination with Figure 1 FIG. 1 and Figure 1 ​​​​As shown in the content of the middle (2), the radiator can be arranged along the frame of the electronic device. In the case of a straight line arrangement of the radiator, it can be arranged in the frame included in the area 301. In the case of a broken line (for example, L type) arrangement of the radiator, it can be arranged in the frame (corner frame) included in the area 302. The radiator in the electronic device can be all straight line type or all broken line type, or part of the straight line type and part of the broken line type. Among them, the area 301 can include the area 301a and the area 301b. The area 302 can include the area 302a and the area 302b.

[0133] It should be understood that in addition to the aforementioned components, the electronic device can also include other components. Among them, any component can be implemented in the form of hardware, software, or a combination of hardware and software. For example, it can include a processor, an external memory interface, an internal memory, a universal serial bus (universal serial bus, USB) interface, a charging management module, a power management module, a battery, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module, a key, a motor, a camera, and a display screen, etc.

[0134] Figure 2 The fixed settings in different antenna structures are shown.

[0135] The fixed settings in different antenna structures are shown. Figure 1 The fixed settings in different antenna structures are shown. Figure 2 The fixed settings in different antenna structures are shown.

[0136] There are at least two antenna branches in at least one antenna, one of which (antenna branch 1) is placed in the first device body 100, and the other (antenna branch 2) is placed in the second device body 200. As shown in the middle (1) and the middle (2), the antenna branch 1 includes the radiator A and the radiator C, and the antenna branch 2 includes the radiator B and the radiator D. Among them, the radiator A is connected with the first ground plate in the first device body 100 through the grounding end 102a, and the radiator C is connected with the first ground plate in the first device body 100 through the grounding end 102c. The radiator B is connected with the second ground plate in the second device body 200 through the grounding end 202b, and the radiator D is connected with the second ground plate in the second device body 200 through the grounding end 202d. Figure 2 Figure 2 The grounding end 102a of the radiator A and the grounding end 102c of the radiator C are close to each other. The grounding end 202b of the radiator B and the grounding end 202d of the radiator D are close to each other. Among them, the close of the grounding ends of the two radiators includes the connection between the two grounding ends but does not include the radiator.

[0137] The grounding end 102a of the radiator A and the grounding end 102c of the radiator C are close to each other. The grounding end 202b of the radiator B and the grounding end 202d of the radiator D are close to each other. Among them, the close of the grounding ends of the two radiators includes the connection between the two grounding ends but does not include the radiator. ​

[0138] When the electronic device is in the folded state, the radiators A and B are parallel to each other, and the open ends 103a of the radiator A and 203b of the radiator B are directed to the same direction. The radiators C and D are parallel to each other, and the open ends 103c of the radiator C and 203d of the radiator D are directed to the same direction. There is a projection overlap between the radiators A and B, i.e., the projection of the radiator A on the second device body 200 overlaps with the radiator B. There is a projection overlap between the radiators C and D, i.e., the projection of the radiator C on the second device body 200 overlaps with the radiator D. There is no projection overlap between the radiators B and C, i.e., the projection of the radiator C on the second device body 200 does not overlap with the radiator B. There can or can not be a projection overlap between the radiators A and D.

[0139] Herein, the open end can be referred to as an open end.

[0140] The radiator A further includes a feeding point 104a connected to the radio frequency source 1 of the electronic device, so that the radio frequency signal emitted from the radio frequency source 1 is directly fed or coupled to the radiator A through the feeding line of the radiator A. The radio frequency source 1 is arranged on the first main board in the first device body 100.

[0141] The radiators A-D can be coupled with the radiators of other antennas through the gaps. Herein, the radiators A-D are taken as an example to describe the antenna 2. The antenna 1 includes at least radiators E and F, and the antenna 3 includes at least radiators G and H. In some possible cases, the radiators A and B can be coupled with the radiators G and H respectively to realize the coupling between the antenna 2 and the antenna 3. The radiators C and D can be coupled with the radiators E and F respectively to realize the coupling between the antenna 2 and the antenna 1.

[0142] In some possible cases, when the electronic device is in the folded state, there is a projection overlap between the radiators E and F, i.e., the projection of the radiator E on the second device body 200 overlaps with the radiator F. There is a projection overlap between the radiators G and H, i.e., the projection of the radiator G on the second device body 200 overlaps with the radiator H.

[0143] Herein, it should be understood that, Figure 2 (1) The four radiators shown in the above are arranged in a straight line. In other cases, the four radiators can also be arranged in other manners. For example, the four radiators can be arranged in a circle. Figure 2In the middle (2), the four radiators can be arranged in a broken line type, and the four antennas still satisfy the above-mentioned fixed settings. Among them, the radiator A and the radiator C can be placed in different types of frames. For example, the radiator A is placed in the horizontal frame, and the radiator C is placed in the vertical frame. The radiator B and the radiator D can be placed in different types of frames. For example, the radiator B is placed in the horizontal frame, and the radiator D is placed in the vertical frame.

[0144] It should be understood here that, Figure 2 The antenna structure diagram shown in the middle (2) is drawn based on the perspective for facilitating the description of the scheme, and there is actually no Figure 2 The perspective embodied in the middle (2). In actual cases, when the electronic device is in the folded state, the antenna branch 1 on the first device body 100 and the antenna branch 2 on the second device body 200 are overlapped (can refer to the following Figure 4 The middle (2) shown). The specific overlapping relationship can refer to the above-mentioned description of the overlapping relationship of each radiator. Because there is an overlap between the two antenna branches, there will be an occlusion when observed from each perspective, and it is difficult to reflect the details (such as the ground terminal, etc.) and the relative relationship of each radiator in the antenna branch from one perspective. Therefore, in order to display the details of the two antenna branches in the same plane, the two are displayed staggered in the same plane. In the following content, the example diagrams that also adopt this display method include: Figure 3 , Figure 5A , Figure 5B and the like. Those skilled in the art can determine the actual position relationship of each radiator in the antenna branch in combination with the related example diagrams and textual descriptions, and should not constitute a limitation on the present application.

[0145] The embodiments of the present application provide three kinds of antenna structures and frequency tuning rules for different antenna structures to improve the performance of the antenna in the folded state.

[0146] It should be understood here that, in some possible cases, the frequency tuning rules involved in the embodiments of the present application are applicable to the case where the electronic device is in the folded state. In the following, in order to simplify the description, it is assumed that the electronic device is in the folded state, and it is no longer emphasized in words.

[0147] The first kind of antenna structure will be described in detail below.

[0148] Figure 3 An example diagram of the first kind of antenna structure is shown.

[0149] As Figure 3As shown in FIG. 1, in the first antenna structure, the antenna 2 includes radiation elements arranged in a zigzag manner, which can include radiation element A, radiation element C, radiation element B and radiation element D, and the four radiation elements satisfy the above-mentioned fixed setting. The radiation element A is arranged on the frame 1 of the first device body 100, and the radiation element A is connected to the radio frequency source. For example, the feed point 104a of the radiation element A is connected to the radio frequency source 1 of the electronic device. The radiation element C is arranged on the frame 2 of the first device body 100. The ground end 102a of the radiation element A and the ground end 102c of the radiation element C are arranged close to and opposite to each other, and the frame between the ground end 102a and the ground end 102c includes the frame at the corner of the first device body 100. The radiation element B is arranged on the frame 1 of the second device body 200, and the radiation element D is arranged on the frame 2 of the second device body 200. The ground end 202b of the radiation element B and the ground end 202d of the radiation element D are arranged close to and opposite to each other, and the frame between the ground end 202b and the ground end 202d includes the frame at the corner of the second device body 200. The radiation elements A-D satisfy the above-mentioned fixed setting, and the description of the fixed setting can be referred to the foregoing description, which will not be repeated here.

[0150] The frame 1 of the first device body is perpendicular to the frame 2 of the first device body. The frame 1 of the second device body is perpendicular to the frame 2 of the second device body.

[0151] In the first antenna structure, the antenna 1 can include radiation element E and radiation element F. The radiation element E is arranged on the frame 2 of the first device body 100, and the radiation element E is connected to the radio frequency source. For example, the feed point 104e of the radiation element E is connected to the radio frequency source 2 of the electronic device. The radiation element F is arranged on the frame 2 of the second device body 200. When the electronic device is in the folded state, the radiation element E and the radiation element F are parallel to each other, and the open end 103e of the radiation element E and the open end 203f of the radiation element F face the same direction. The ground end 102e of the radiation element E is connected to the first ground plate in the first device body 100, and the ground end 202f of the radiation element F is connected to the second ground plate in the second device body 200. The radio frequency source 2 is different from the radio frequency source 1.

[0152] In the first antenna structure, the antenna 3 can include the radiator G and the radiator H. The radiator G is disposed on the frame 1 of the first device body 100 and connected with the radio frequency source. For example, the feed point 104g of the radiator G is connected with the radio frequency source 3 of the electronic device. The radiator H is disposed on the frame 1 of the second device body 200. When the electronic device is in the folded state, the radiator G and the radiator H are parallel to each other, the open end 103g of the radiator G and the open end 203h of the radiator H are oriented to the same direction, the ground end 102g of the radiator G is connected to the first ground plate in the first device body 100, and the ground end 202h of the radiator H is connected to the second ground plate in the second device body 200. The radio frequency source 3 is different from the radio frequency source 1 and the radio frequency source 2.

[0153] The antenna 2 is coupled with the antenna 1 and the antenna 3. The coupling form of the antenna 2 and the antenna 1 includes that the radiator C is coupled with the radiator E through the gap 105c, and the open end 103c of the radiator C is oppositely disposed with the open end 103e of the radiator E. The radiator D is coupled with the radiator F through the gap 105d, and the open end 203d of the radiator D is oppositely disposed with the open end 203f of the radiator F.

[0154] The coupling form of the antenna 2 and the antenna 3 includes that the radiator A is coupled with the radiator G through the gap 105a, and the open end 103g of the radiator G is oppositely disposed with the open end 103a of the radiator A. The radiator B is coupled with the radiator H through the gap 105b, and the open end 203b of the radiator B is oppositely disposed with the open end 203h of the radiator H.

[0155] In the case that the antenna 2 is coupled with the antenna 1 and the antenna 3, the antenna 2 can share the radiator C, the radiator D and the radiator F with the antenna 1. The antenna 2 can share the radiator B and the radiator H with the antenna 1. That is, the antenna 2 can include the radiator A-radiator D, and further include the radiator H and the radiator F. The antenna 1 can include the radiator E, the radiator F, the radiator C and the radiator D. The antenna 3 can include the radiator G, the radiator H and the radiator B.

[0156] In addition to the above-described structural arrangement, in some possible cases, the first antenna structure can further include one or more of the following structural arrangements.

[0157] Structural arrangement 11: the length of the radiator G is longer than the length of the radiator H.

[0158] Structural arrangement 12: the length of the radiator E is longer than the length of the radiator F.

[0159] Structure setting 13: the position of the gap 105a in the first device body 100 is the same as the position of the gap 105b in the second device body 200, i.e. the projection of the gap 105a and the gap 105b is completely coincident.

[0160] Structure setting 14: the position of the gap 105c in the first device body 100 is the same as the position of the gap 105d in the second device body 200, i.e. the projection of the gap 105a and the gap 105b is completely coincident.

[0161] It should be understood here that the completely coincident projection referred to in the embodiments of the present application means that the projection is completely coincident in height, and an error is allowed to exist.

[0162] As shown in Fig. 2 (2), the electronic device can further include a frequency control circuit 400c, a frequency control circuit 400e, a frequency control circuit 400d and a frequency control circuit 400f. Figure 3 As shown in Fig. 2 (2), the electronic device can further include a frequency control circuit 400c, a frequency control circuit 400e, a frequency control circuit 400d and a frequency control circuit 400f.

[0163] The connection point 106c of the radiator C is connected to the first floor in the first device body 100 through the frequency control circuit 400c. The frequency control circuit 400c includes a switching device 410c and a plurality of frequency adjustment branches C1 connected in parallel. The switching device 410c is used to select at least one frequency adjustment branch C1, thereby adjusting the frequency of the radiator C. The switching device 410c can include at least one switching unit. The switching device 410c can select at least one frequency adjustment branch C1 by switching the closing (ON) and opening (OFF) of the switching unit. For example, the plurality of frequency adjustment branches C1 can include a frequency adjustment branch 421 and a frequency adjustment branch 422. The frequency adjustment branch 421 is connected to a switching unit s1, and the switching unit s1 is used to control whether the frequency adjustment branch 421 is turned on. The frequency adjustment branch 422 is connected to a switching unit s2, and the switching unit s2 is used to control whether the frequency adjustment branch 422 is turned on. When the switching device 410c controls the switching unit s1 to be closed (ON) and controls the switching unit s2 to be opened (OFF), it means that the switching device 410c selects the frequency adjustment branch 421 and does not select the frequency adjustment branch 422. Other selection conditions of the switching device 410c can be referred to the above description, which will not be described here.

[0164] In some possible cases, the connection point 106c is arranged at a position close to the opening end 103c of the radiator C.

[0165] The feeding point 104e of the radiator E is connected to the first floor in the first device main body 100 through the frequency control circuit 400e. The frequency control circuit 400e includes a switching device 410e and a plurality of frequency tuning branches El connected in parallel. The switching device 410e is used to select at least one frequency tuning branch El to adjust the frequency of the radiator E. The switching device 410e can include at least one switching unit. The switching device 410e can select at least one frequency tuning branch El by switching the switching unit from ON to OFF. For example, the plurality of frequency tuning branches El can include a frequency tuning branch 423 and a frequency tuning branch 424. The frequency tuning branch 423 is connected to a switching unit s3, which is used to control whether the frequency tuning branch 423 is turned on or not. The frequency tuning branch 424 is connected to a switching unit s4, which is used to control whether the frequency tuning branch 424 is turned on or not. When the switching device 410e controls the switching unit s3 to be ON and the switching unit s4 to be OFF, it means that the switching device 410e selects the frequency tuning branch 423 and does not select the frequency tuning branch 424. Other selection conditions of the switching device 410e can refer to the above description, which will not be repeated here.

[0166] In some possible cases, the feeding point 104e is arranged close to the open end 103e of the radiator E.

[0167] The connecting point 106d of the radiator D is connected to the second floor in the second device main body 200 through the frequency control circuit 400d. The frequency control circuit 400d includes a switching device 410d and a plurality of frequency tuning branches D1 connected in parallel. The switching device 410d is used to select at least one frequency tuning branch D1 to adjust the frequency of the radiator D. The switching device 410d can include at least one switching unit. The switching device 410d can select at least one frequency tuning branch D1 by switching the switching unit from ON to OFF. For example, the plurality of frequency tuning branches D1 can include a frequency tuning branch 420, a frequency tuning branch 425 and a frequency tuning branch 426. The frequency tuning branch 425 is connected to a switching unit s5, which is used to control whether the frequency tuning branch 425 is turned on or not. The frequency tuning branch 426 is connected to a switching unit s6, which is used to control whether the frequency tuning branch 426 is turned on or not. When the switching device 410d controls the switching unit s5 to be ON and the switching unit s6 to be OFF, it means that the switching device 410d selects the frequency tuning branch 425 and does not select the frequency tuning branch 426. When the switching unit s5 and the switching unit s6 are both OFF, it means that the switching device 410d selects the frequency tuning branch 420. Other selection conditions of the switching device 410d can refer to the above description, which will not be repeated here.

[0168] In some possible cases, the connection point 106d is arranged close to the open end 203d of the radiator D.

[0169] The connection point 106f of the radiator F is connected to the second floor in the second device body 200 through the frequency control circuit 400f. The frequency control circuit 400f includes a switching device 410f and a plurality of frequency tuning branches F arranged in parallel. The switching device 410f is used to select at least one frequency tuning branch F, so as to adjust the frequency of the radiator F. The switching device 410f can include at least one switching unit. The switching device 410f can select at least one frequency tuning branch F by switching the closing (ON) and opening (OFF) of the switching unit. For example, the plurality of frequency tuning branches F can include a frequency tuning branch 429, a frequency tuning branch 427, and a frequency tuning branch 428. The frequency tuning branch 427 is connected to a switching unit s7, which is used to control whether the frequency tuning branch 427 is turned on. The frequency tuning branch 428 is connected to a switching unit s8, which is used to control whether the frequency tuning branch 428 is turned on. When the switching device 410f controls the switching unit s7 to be closed (ON) and controls the switching unit s8 to be opened (OFF), it means that the switching device 410f selects the frequency tuning branch 427 and does not select the frequency tuning branch 428. When the switching unit s7 and the switching unit s8 are both opened (OFF), it means that the switching device 410f selects the frequency tuning branch 429. Other selection conditions of the switching device 410f can refer to the above description, which will not be described here.

[0170] In some possible cases, the connection point 106f is arranged close to the open end 203f of the radiator F.

[0171] It should be understood that each matching branch can include one or more lumped elements, such as one or more of resistors, capacitors, inductors, and the like. The lumped elements included in different matching branches can be different. The types, parameter values, or quantities of the lumped elements included in different matching branches can be different.

[0172] Figure 4 Exemplary arrangements of the radiators in the electronic device are shown when the first antenna structure is used.

[0173] For ease of observation, Figure 4 The related content involved in the above (1) is shown by taking the electronic device in the unfolded state as an example, Figure 4 The above (2) is an exemplary arrangement of the radiators when the electronic device is in the folded state.

[0174] As Figure 4As shown, the radiators G, A, C and E are arranged on the first device body 100 of the electronic device. Among them, the radiators A and G are arranged on the horizontal frame, and the radiators C and E are arranged on the vertical frame, i.e., the radiators A and C are arranged on the frame at the corner of the first device body 100.

[0175] The radiators H, B, D and F are arranged on the second device body 200 of the electronic device. Among them, the radiators B and H are arranged on the horizontal frame, and the radiators D and F are arranged on the vertical frame, i.e., the radiators D and B are arranged on the frame at the corner of the second device body 200. Among them, the first device body 100 and the second device body 200 are connected through the rotating shaft 300.

[0176] The following describes in detail how to adjust the frequency based on the first antenna structure to improve the performance of the antenna in the folded state.

[0177] In the case of the first antenna structure, the operating frequency range of the antenna 1 can include one or all of the medium-high frequency (MHB) band or the N78 band. At this time, the antenna 1 can be responsible for providing one or more of 2G / 3G / 4G / 5G communication modes for the electronic device. The operating frequency range of the antenna 2 includes one or more of the GPS band or the wifi 2.4G band. At this time, the antenna 2 can be responsible for providing GPS communication and 2.4G wifi communication for the electronic device. The operating frequency range of the antenna 3 includes the N78 band or the wifi 5G band. At this time, the antenna 3 can be responsible for providing 5G communication and 5G wifi communication for the electronic device.

[0178] Among them, the medium-high frequency (MHB) band is usually 1.700GHz-2.700GHz. The N78 band is usually 3.400GHz-3.600GHz. The GPS band is usually 1.2280GHz-1.6750GHz. The wifi 2.4G band is usually 2.400GHz-2.4835GHz. The wifi 5G band is usually 2.484GHz-4.915GHz. Among them, 2G / 3G / 4G / 5G communication can be collectively referred to as cellular network communication.

[0179] It should be understood here that the operating frequency range of each antenna and the communication mode responsible for providing are examples. In different cases, different operating frequency ranges can be provided, and the communication mode provided can also be different, and the embodiments of the present application do not limit this.

[0180] The 2.4G wifi communication and the 5G wifi communication can be collectively referred to as wifi communication. The 2.4G wifi communication indicates that the working frequency of the antenna 2 is in the wifi 2.4G frequency band. The 5G wifi communication indicates that the working frequency of the antenna 2 is in the wifi 5G frequency band.

[0181] Adjusting the working frequencies of the antennas 1-3 according to the preset frequency adjustment rule 11 can enable the antennas to resonate at at least one target working frequency to provide the electronic device with one or more of the communication modes, including 2G / 3G / 4G / 5G communication, GPS communication, 2.4G wifi communication, and 5G wifi communication. The at least one target working frequency corresponding to one antenna belongs to the working frequency band of the antenna. The preset frequency adjustment rule 11 can include the frequency adjustment rules 11a and 11b described below. For related descriptions of the frequency adjustment rules 11a and 11b, reference can be made to the following descriptions, for example, the preset frequency adjustment rule 11a can refer to the description of the related content of the frequency adjustment rule 11a below. The preset frequency adjustment rule 11b can refer to the description of the related content of the frequency adjustment rule 11b below. Figure 7 Figure 13

[0182] However, when the working frequencies of the antennas 1-3 are adjusted according to the preset frequency adjustment rule 11, the following low-performance scenarios can occur: When the performance of the antenna responsible for providing the communication mode A (antenna A) is low, the communication ability of the foldable-screen electronic device when communicating with other electronic devices in the communication mode A is poor. The following two low-performance scenarios (low-performance scenario 11 and low-performance scenario 12) that can occur when the electronic device is set to the first antenna structure and uses the preset frequency adjustment rule 11 are exemplified, as well as solutions to the low-performance scenarios.

[0183] Low-performance scenario 11:

[0184] When the working frequencies of the antennas 1-3 are adjusted according to the preset frequency adjustment rule 11a, the electronic device enables 2.4G wifi communication and does not enable cellular network communication, and the performance of the antenna 2 is low when working in the wifi 2.4G frequency band, resulting in poor communication ability of the electronic device when communicating with other electronic devices in the wifi single state. The wifi single state refers to enabling 2.4G wifi communication and not enabling cellular network communication.

[0185] It should be understood that when the electronic device is in the wifi single state, the communication with other electronic devices can be maintained through the 2.4G wifi communication mode, so the cellular network communication can not be used, but the electronic device still has the ability to use the cellular network communication. At this time, the cellular network communication mode can be in an enabled state, and the electronic device can use services such as making a phone call through the cellular network communication mode.

[0186] ​​The reason why the performance of the antenna 2 is low in the low-performance scenario 11 when the antenna 2 works in the wifi 2.4G frequency band can be described below. Figure 7 The description is omitted here.

[0187] The improvement method for the low-performance scenario 11 and related content are described below.

[0188] For the low-performance scenario 11, based on the first antenna structure in the present application, the electronic device can re-adjust the working frequencies of the antenna 2 and the antenna 1 coupled thereto according to the preset frequency adjustment rule 21a, so that the current directions of each radiator in the antenna 1 and the antenna 2 are adjusted to the target current direction (denoted as target current direction 11). The target current direction 11 is the current direction that meets the wifi single state when the first antenna structure is adopted, and each radiator in the antenna 1 and the antenna 2 can be used to provide 2.4G wifi communication mode, so that the performance of the antenna 2 is improved, and the communication ability of the electronic device when communicating with other electronic devices in the 2.4G wifi communication mode is improved. Wherein, the antenna 1 is an antenna responsible for providing cellular network communication. Because the communication mode responsible by the antenna 1 is not turned on in the low-performance scenario 11, the working frequency of the antenna 1 can be adjusted to use the antenna 1 to assist the antenna 2 to improve the performance.

[0189] The scenario of re-adjusting the working frequencies of the antenna 2 and the antenna 1 coupled thereto according to the preset frequency adjustment rule 21a when the electronic device is in the wifi single state can be referred to as the wifi single state scenario.

[0190] It should be understood here that if the communication mode responsible by other antennas (for example, antenna 3) is not turned on, the working frequency of the other antennas can also be adjusted to use the other antennas to assist the antenna 2 to improve the performance. The adjustment method of the antenna 1 can be referred to, and the description is omitted here.

[0191] It should also be understood that the antenna (for example, antenna 1) other than the antenna 2 can also not be used to assist the antenna 2 to improve the performance. The performance of the antenna 2 can be improved by the cooperation of part or all of the radiators in the antenna 2.

[0192] First, the reason for generating the target current direction is described.

[0193] It should be understood that the reason for generating the target current direction can include that the performance of the antenna 2 can be improved when the parasitic radiators that meet the condition 1 and the main radiator generate the currents in the same direction, and the parasitic radiators that meet the condition 2 and the main radiator generate the currents in the opposite direction. The more the parasitic radiators that meet the condition 1 and the main radiator generate the currents in the same direction, or the more the parasitic radiators that meet the condition 2 and the main radiator generate the currents in the opposite direction, the more the performance of the antenna 2 is improved. The current generated by the radiator that meets the condition 3 should be weak (close to no current) so as not to have an adverse effect on the main radiator.

[0194] In which, the related description of the phenomenon that the more the parasitic radiators that meet the condition 1 and the main radiator generate the currents in the same direction, the more the performance of the antenna 2 (including the main radiator) is improved can refer to the description of the following Figure 43 and related content, which will not be described here. The related description of the phenomenon that the more the parasitic radiators that meet the condition 2 and the main radiator generate the currents in the opposite direction, the more the performance of the antenna 2 is improved can refer to the description of the following Figure 44 and related content, which will not be described here.

[0195] It should be understood here that the main radiator includes a radiator whose working frequency belongs to the frequency band corresponding to the communication mode enabled by the electronic device. The parasitic radiator includes other radiators except the main radiator. For example, a radiator without a feed point, or a radiator with a feed point but the radio frequency source connected to the feed point does not emit radio frequency signals. For example, in the case that the electronic device is in a wifi single state, the main radiator can be the radiator A, and the working frequency of the radiator A belongs to the wifi 2.4G frequency band. The radiators in the antenna 1 can all be parasitic radiators to improve the performance of the radiator A, that is, the radiator E with a feed point can also be a parasitic radiator. In the case that the electronic device is in a wifi and B41 coexistence state, the radiator A in the antenna 2 is the main radiator, and the working frequency of the radiator A belongs to the wifi 2.4G frequency band. The radiator E in the antenna 1 is the main radiator, and the working frequency of the radiator E belongs to the B41 frequency band. Other radiators can be parasitic radiators of the radiator A or the radiator E. Some radiators can also be parasitic radiators of the radiator A and the radiator E at the same time. The specific case can refer to the related description below, which will not be described here.

[0196] It should be understood here that in some possible cases, the same radiator can be a parasitic radiator or a main radiator, depending on the relationship between the current distribution in the radiator and other radiators.

[0197] The parasitic radiator satisfying the condition 1 includes a parasitic radiator on the same side of the main radiator or a parasitic radiator parallel to the main radiator. The parasitic radiator satisfying the condition 2 includes a parasitic radiator on the opposite side of the main radiator, not parallel to the main radiator and closest to the main radiator. The parasitic radiator satisfying the condition 3 includes a parasitic radiator on the opposite side of the main radiator, not parallel to the main radiator and farthest from the main radiator. Wherein, the same side of the two radiators means that both of the two radiators are arranged on the first device body 100 or both of the two radiators are arranged on the second device body 200. The opposite side of the two radiators means that one of the two radiators is arranged on the first device body 100 and the other is arranged on the second device body 200. The two radiators are parallel to each other means that both of the two radiators are arranged on the horizontal frame or both of the two radiators are arranged on the vertical frame. The two radiators are not parallel to each other means that one of the two radiators is arranged on the horizontal frame and the other is arranged on the vertical frame. In combination with the foregoing related content and with reference to the foregoing Figure 3 When the main radiator is the radiator A, the parasitic radiator satisfying the condition 1 can include the radiator C, the radiator B, the radiator H and the radiator E. The parasitic radiator satisfying the condition 2 can include the radiator D. The parasitic radiator satisfying the condition 3 can include the radiator F.

[0198] In the following content, the radiator satisfying the condition 1 can be referred to as the first type of radiator. The radiator satisfying the condition 2 can be referred to as the second type of radiator. The radiator satisfying the condition 3 can be referred to as the third type of radiator.

[0199] After the main radiator generates the current, the parasitic radiator coupled with the main radiator can be excited to generate the current. In the case that a parasitic radiator is excited by two or more main radiators at the same time, the parasitic radiator can have (distributed) two directions of current, and the main direction of current generated by the parasitic radiator can mainly depend on the parasitic radiator and the main radiator with which the parasitic radiator is most coupled. In some possible cases, it can be considered that the closer the distance between a parasitic radiator and a main radiator, the higher the coupling degree. In the case that the parasitic radiator is close to the ground end of the main radiator, the distance can be 0.

[0200] The antenna structure provided in the present application has the following performance of the current direction generated by each radiator: the current direction generated by the parasitic radiator can mainly depend on the parasitic radiator and the main radiator with which the parasitic radiator is most coupled. For example, depending on the positional relationship between the parasitic radiator and the main radiator and the frequency relationship between the parasitic radiator and the main radiator.

[0201] As shown in Table 1, when the main radiator and the parasitic radiator are on the same side and the grounded end is close, the current directions of the two radiators are opposite when the frequency of the main radiator is lower than that of the parasitic radiator, and the current directions of the two radiators are the same when the frequency of the main radiator is higher than that of the parasitic radiator. When the main radiator and the parasitic radiator are on the same side and the ungrounded end is close (for example, the open ends are oppositely arranged), the current directions of the two radiators are the same when the frequency of the main radiator is lower than that of the parasitic radiator, and the current directions of the two radiators are opposite when the frequency of the main radiator is higher than that of the parasitic radiator. When the main radiator and the parasitic radiator are on different sides, the parasitic radiator is called the opposite-side parasitic radiator of the main radiator. At this time, the current directions of the two radiators are the same when the frequency of the main radiator is lower than that of the parasitic radiator, and the current directions of the two radiators are opposite when the frequency of the main radiator is higher than that of the parasitic radiator.

[0202] Table 1

[0203]

[0204] Based on Table 1, taking radiator A as the main radiator, the current direction relationships between several parasitic radiators of the radiator A and the radiator A are exemplified. As shown in Table 2, the radiator C and the radiator A are on the same side and the grounded end is close. When the frequency of the radiator A is lower than that of the radiator C, the current directions of the two radiators are opposite, and otherwise, the current directions of the two radiators are the same. The radiator E and the radiator A are on the same side and the ungrounded end is close. When the frequency of the radiator A is lower than that of the radiator E, the current directions of the two radiators are the same, and otherwise, the current directions of the two radiators are opposite. The radiator B (or the radiator D) and the radiator A are on different sides. When the frequency of the radiator A is lower than that of the radiator B (or the radiator D), the current directions of the two radiators are the same, and otherwise, the current directions of the two radiators are opposite. The current relationships between other parasitic radiators and the main radiator can be referred to the foregoing Table 1 and the relevant descriptions in Table 2, which will not be described herein again.

[0205] Table 2

[0206]

[0207] It should be understood herein that, for two parasitic radiators on the same side, adjacent to each other and oppositely arranged at the open ends, if the electrical length of one parasitic radiator (parasitic radiator 1) is less than a preset length value 1, and the electrical length of the other parasitic radiator (parasitic radiator 2) is greater than the preset length value 1. The parasitic radiator 2 and the parasitic radiator 1 can be regarded as one parasitic radiator taking the parasitic radiator 2 as the main parasitic radiator. At this time, the current direction of the parasitic radiator 1 does not depend on the main radiator with which the parasitic radiator 1 is most coupled, but is the same as the current direction of the parasitic radiator 2. The current direction of the parasitic radiator 2 depends on the main radiator with which the parasitic radiator 2 is most coupled.

[0208] It should also be understood that in the case that one of the two radiators is in the horizontal bezel and the other is in the vertical bezel, the currents generated by the two radiators are in the same direction, including: after the radiators arranged in the zigzag shape are equivalent to the radiators arranged in the straight line shape, the currents generated by the two radiators are in the same direction. The currents generated by the two radiators are in the opposite direction, including: after the radiators arranged in the zigzag shape are equivalent to the radiators arranged in the straight line shape, the currents generated by the two radiators are in the opposite direction.

[0209] Figure 5A The contrast of the current directions in the wifi single-state scenario and the low-performance scenario 11 is shown in FIG. 1.

[0210] Figure 5B An exemplary current distribution simulation diagram when the electronic device is in the wifi single-state is shown.

[0211] Based on the foregoing reasons for generating the target current direction, in combination with Figure 5A and Figure 5B The target current direction 11 proposed for the wifi single-state scenario is described in detail.

[0212] Figure 5A A schematic diagram of a target current direction 11 is shown in FIG. 1.

[0213] Reference is made to Figure 5A In FIG. 1, the expected current directions (target current direction 11) of each radiator in the antenna 1 and the antenna 2 are shown when the operating frequencies of the antenna 2 and the antenna 1 coupled thereto are readjusted according to the preset frequency adjustment rule 21a.

[0214] In the case that the electronic device is in the wifi single-state, the antenna 2 is responsible for providing the electronic device with a 2.4G wifi communication mode, and the radiator A is the main radiator. The radiators H, B, D, F, C, and E are parasitic radiators. Among them, based on the foregoing, the radiators H, B, C, and E are the first type of radiators, and the expected current directions generated thereby are in the same direction as the radiator A. The radiator D is the second type of radiator, and the expected current direction generated thereby is in the opposite direction of the radiator A. The radiator F is the third type of radiator, and the expected current generated thereby is weak so as not to interfere with the radiator A.

[0215] In some possible cases, the current of the radiator F being weak includes that the current of the radiator F is weaker than the current of the radiator A.

[0216] It should be understood that here the current direction of the radiator A (the main radiator) is taken as Figure 5A The direction shown in FIG. 1 is taken as an example for illustration. In actual cases, the current direction of the radiator A can also be opposite to the direction shown in FIG. 1. The present application does not limit this. Figure 5A The direction shown in FIG. 1 is taken as an example for illustration. In actual cases, the current direction of the radiator A can also be opposite to the direction shown in FIG. 1. The present application does not limit this.

[0217] Figure 5A Fig. 2 shows the current direction in the low performance scenario 11.

[0218] The following is described in detail with reference to Figure 5A Fig. 2 and the foregoing Figure 5A Fig. 1, the reason why the performance of the antenna 2 is improved when the electronic device is in the wifi single state after using the frequency modulation rule involved in the present application.

[0219] Reference is made to Figure 5A Fig. 2, in the low performance scenario 11, the reason why the performance of the antenna 2 is low includes but is not limited to one or more of the following reasons.

[0220] Low performance reason 11-1: the radiator D is the second type of radiator, but the current of the radiator D is in the same direction as the current of the radiator A. When the current of the radiator D is in the same direction as the current of the radiator A, the resonance generated thereby has an adverse effect on the radiator A.

[0221] Reference is made to Figure 5A Fig. 1 and Figure 5A Fig. 2, for this low performance reason 11-1, there is a first change: the current of the radiator D changes from being in the same direction as the current of the radiator A to being in the opposite direction, which can improve the performance of the antenna 2. The first change for this low performance reason 11-1 is embodied in Figure 5A the white circle ① in Fig. 1.

[0222] It should be understood that the reason why the current of the radiator D is changed from being in the same direction as the current of the radiator A to being in the opposite direction is that the radiator D, although being a parasitic radiator of the radiator A, is on the opposite side and not parallel to the radiator A, and is close to the radiator A. When the current of the radiator D is in the opposite direction of the current of the radiator A, the resonance generated thereby has a positive parasitic radiation effect on the radiator A, which can improve the performance of the antenna 2.

[0223] Low performance reason 11-2: the radiator F is the third type of radiator, but the current of the radiator F is too strong to have an adverse effect on the radiator A.

[0224] Reference is made to Figure 5A Fig. 1 and Figure 5A Fig. 2, for this low performance reason 11-2, there is a second change: the current of the radiator F changes from being strong to being weak to reduce the adverse effect on the antenna 2, which can improve the performance of the antenna 2. The first change for this low performance reason 11-2 is embodied in Figure 5A the white circle ② in Fig. 1.

[0225] Low performance reason 11-3: the radiators H, B, C and E are the first type of radiators, but except that the currents generated by the radiators H and B are in the same direction as the radiator A (the main radiator), the currents generated by the radiators C and E are in the opposite direction of the radiator A, which will cause the performance of the antenna 2 to decrease.

[0226] In combination with Figure 5A (1) and Figure 5A (2), it can be seen that for this low performance reason 11-3, there is a third change: the currents generated by the radiators C and E change from being in the opposite direction of the radiator A (the main radiator) to being in the same direction, which can improve the performance of the antenna 2. The third change for this low performance reason 11-3 is reflected in the white circle ③ in Figure 5B .

[0227] As shown in Figure 5A , it is an exemplary current distribution simulation diagram when the electronic device is in the wifi single state, which corresponds to the target current direction 11 shown in Figure 6 (1). Among the radiators B-E, except that the current direction of the radiator D is opposite to that of the radiator A, the current directions of the other radiators are the same as that of the radiator A. In addition, the current of the radiator F is relatively weak.

[0228] Again, the preset frequency adjustment rule 21a involved in adjusting the target current direction 11 is described.

[0229] In some possible cases, the preset frequency adjustment rule 21a is used to adjust the frequency relationship between the radiator A (the main radiator) and each parasitic radiator of the radiator A when the electronic device is in the wifi single state, so that the current distributed in each radiator satisfies the target current direction 11.

[0230] The preset frequency adjustment rule 21a can include: for the first antenna structure, when the electronic device is in the wifi single state, the operating frequency (denoted as operating frequency A) of the radiator A (main radiator) belongs to the wifi 2.4G frequency band, for example, the operating frequency A can be 2.4Ghz. The operating frequency of the radiator C is less than and close to the operating frequency A. The operating frequency of the radiator D is less than and close to the operating frequency A. The electrical length of the radiator B is greater than the preset length value 1, and the electrical length of the radiator H is less than the preset length value 1, so that the radiator B and the radiator H can be regarded as a parasitic radiator with the radiator B as the main one, the frequency of the radiator H is regarded as the same as that of the radiator B, and the operating frequency of the radiator B is greater than and close to the operating frequency A. The operating frequency of the radiator E is greater than and close to the operating frequency A. The operating frequency of the radiator F is greater than the operating frequency A, wherein the operating frequency of the radiator F is greatly different from the operating frequency A (for example, it is the largest in the frequency band corresponding to each radiator), so that the expected current generated by the radiator F is weak to avoid interference with the radiator A.

[0231] In some possible cases, the operating frequency of the radiator closer to the radiator A (main radiator) can be set closer to the operating frequency A. Since the distance from the radiator from near to far can be the radiator B, the radiator E, and the radiator F, the radiators involved in the wifi single state scenario from low to high frequency can be in turn: the radiator C, the radiator D, the radiator A, the radiator B and the radiator H, the radiator E, and the radiator F.

[0232] It should be understood here that the radiator A (main radiator) is the main radiator with the highest coupling degree with the radiator C, the radiator D, the radiator B, the radiator E, and the radiator F. The radiator H can be regarded as a parasitic radiator with the radiator B as the main one, and the current direction generated thereby is the same as that of the radiator B. Based on the above-mentioned reason for generating the target current direction, the target current direction 11 can be generated by combining the preset frequency adjustment rule 21a and the above-mentioned reason for generating the target current direction, so that the performance of the antenna 2 is improved.

[0233] It should also be understood that the aforementioned description refers to parasitic radiators, with radiators C, D, B, H, E, and F all serving as radiator A (the main radiator). By adjusting the operating frequencies of each parasitic radiator, a suitable parasitic resonance is generated after the main radiator resonates, improving the performance of antenna 2. In practice, more or fewer parasitic radiators than described above can be used to generate parasitic resonance and improve the performance of antenna 2. For example, in some other possible cases, only radiators C, D, and B can be used as parasitic radiators of radiator A (the main radiator), generating a suitable parasitic resonance to improve the performance of antenna 2 after the main radiator resonates. In this case, the preset frequency modulation rule 21a may include: for the first antenna structure, when the electronic device is in Wi-Fi single-mode, adjusting the operating frequency of radiator A (the main radiator) (denoted as operating frequency A) to be in the Wi-Fi 2.4G band, for example, this operating frequency A can be 2.4GHz. Adjusting the operating frequency of radiator C to be less than and close to operating frequency A. The operating frequency of radiator D is adjusted to be less than and close to the operating frequency A. The operating frequency of radiator B is greater than and close to the operating frequency A. In some possible cases, when the operating frequencies of radiators C, D, B, and A (the main radiator) increase from low to high, the radiators involved can be, in order: radiator C, radiator D, radiator A (the main radiator), and radiator B. In this case, the current distributed in radiators B and C is in the same direction as that in radiator A, while the current distributed in radiator D is in the opposite direction to that in radiator A.

[0234] Figure 6 A schematic diagram of a preset frequency modulation rule 21a is shown.

[0235] Figure 6 This is a graph showing the S-parameters of antenna 1 and antenna 2 under a Wi-Fi single-state scenario obtained during simulation testing of electronic devices. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0236] Figure 6 The diagram includes two curves: curve "Antenna 2 - WiFi Single-State" (abbreviated as curve Q61) and curve "Antenna 1 - WiFi Single-State" (abbreviated as curve Q62). Curve Q61 illustrates the frequency distribution of the radiators in Antenna 2 and the corresponding frequencies of each radiator in the WiFi single-state scenario. Curve Q62 illustrates the frequency distribution of the radiators in Antenna 1 and the corresponding frequencies of each radiator in the WiFi single-state scenario.

[0237] Figure 6 The letters AF in the diagram represent radiators A through F, respectively. Figure 6It can be seen that in a single-mode Wi-Fi scenario, the radiators involved from low to high frequency are, in order: radiator C (approximately 2.0 GHz), radiator D (approximately 2.2 GHz), radiator A (approximately 2.4 GHz), radiators B and H (approximately 2.6 GHz), radiator E (approximately 2.8 GHz), and radiator F (approximately 3 GHz). This conforms to the aforementioned description of the preset frequency modulation rule 21a. Figure 5A The frequency relationships of the radiators shown in the diagram ensure that the desired current direction of each radiator in antennas 1 and 2 is the target current direction 11. For a description of the target current direction 11, please refer to the aforementioned... Figure 6 The description in (1) will not be repeated here.

[0238] It should be understood that, as Figure 6 As shown, the reason why the frequency of radiation D is adjusted closer to radiator A (the main radiator) compared to radiator C is that radiator D is farther from radiator A than radiator C. If we want radiator D to provide a more positive parasitic radiation effect on radiator A, the frequency of radiation D needs to be adjusted relatively close to radiator A. Otherwise, the current excited by radiator D will be weaker, and the positive parasitic radiation effect on radiator A will be smaller.

[0239] like Figure 6 As shown, the reason why the frequency of radiator B is adjusted to be closer to that of radiator A (the main radiator) compared to radiator E and radiator F is as follows: Figure 6 In the example, radiator B plays a major parasitic radiation role on radiator A because radiator B and radiator A are both on the first side (e.g., the horizontal side) of the electronic device and are relatively close to each other.

[0240] It should also be understood that in a Wi-Fi single-state scenario, antenna 1 and antenna 2 can share radiators D, F, and C. Figure 7 The example uses antenna 1 to represent radiation D and radiator F. In practice, radiation D and radiator F can also be represented by antenna 2, but this embodiment does not limit the representation to this.

[0241] Figure 7 A comparative diagram of the frequency modulation rules involved in a single-mode Wi-Fi scenario and a low-performance scenario 11 is shown.

[0242] Figure 7 This is a graph comparing the S-parameters of antenna 1 and antenna 2 under simulated Wi-Fi single-state and low-performance scenarios 11, obtained during simulation testing of electronic devices. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0243] Figure 6 The middle includes 4 curves: curve "antenna 2-wifi single state" is referred to as curve Q61, curve "antenna 1-wifi single state" is referred to as curve Q62, curve "antenna 2-scenario 11" is referred to as curve Q63, and curve "antenna 1-scenario 11" is referred to as curve Q64. Among them, curve Q63 shows the frequency high-low relationship of each radiator in antenna 2 and the frequency corresponding to each radiator in low-performance scenario 11. Curve Q64 shows the frequency high-low relationship of each radiator in antenna 1 and the frequency corresponding to each radiator in low-performance scenario 11. The related description of curve Q61 and curve Q62 is the same as the foregoing Figure 7 The curve Q63 and the curve Q64 shown in the middle are the same as the curve Q61 and the curve Q62 and their related contents, which will not be described here.

[0244] It should be understood here that Figure 7 The curve Q63 and the curve Q64 shown in the middle are a case in low-performance scenario 11. In this case, in low-performance scenario 11, when the working frequency of antenna 1 is the medium-high frequency B3 band (abbreviated as MHBB3), the performance of antenna 2 is the best compared to when the working frequency of antenna 1 is other frequency bands.

[0245] Figure 7 The letters A-F in the middle represent radiator A-radiator F, respectively, and Figure 5A It can be known that in low-performance scenario 11, the radiators involved in the frequency from low to high are in turn: radiator E (about 1.8 GHz), radiator A (about 2.4 GHz), radiator F (about 2.5 GHz), radiator B and radiator H (about 2.6 GHz), radiator D (about 3.4 GHz), and radiator C (about 4.3 GHz). This can be understood as an example of the foregoing frequency tuning rule 11a.

[0246] The frequency high-low relationship of each radiator shown in curve Q63 and curve Q64 conforms to the foregoing description of the preset frequency tuning rule 11a. It can make the current direction of each radiator in antenna 1 and antenna 2 be the current direction in the foregoing low-performance scenario 11. For the current direction in low-performance scenario 11, please refer to the foregoing description of Figure 7 The description of (2) in the middle, which will not be described here.

[0247] Compared with the working frequency of each radiator determined by the preset frequency tuning rule 21a, at least one radiator in the wifi single state scenario has a change in working frequency compared with low-performance scenario 11. For example, including but not limited to the following changes.

[0248] Radiator frequency change 71: the working frequency of radiator D changes from 3.4 GHz, which is higher than that of radiator A (the main radiator), to 2.2 GHz, which is lower than that of radiator A. The change is embodied inFigure 5A The radiation body frequency change 71 can change the current direction of the radiation body D from the same direction as the radiation body A to the opposite direction of the radiation body A. The related description about the current direction change of the radiation body D can refer to the foregoing description about the white circle 1 in the first embodiment, which will not be repeated here. Figure 7 The related description about the white circle 1 in the first embodiment can be referred to, which will not be repeated here.

[0249] The radiation body frequency change 72: the working frequency of the radiation body F changes from 2.5 GHz to 3 GHz, which is farther away from the working frequency of the radiation body A. The change is shown in the white circle 2. Figure 5A The radiation body frequency change 72 can change the current of the radiation body F from strong to weak. The related description about the current change of the radiation body F can refer to the foregoing description about the white circle 2 in the first embodiment, which will not be repeated here. Figure 7 The related description about the white circle 2 in the first embodiment can be referred to, which will not be repeated here.

[0250] The radiation body frequency change 73: the working frequency of the radiation body E changes from 1.8 GHz, which is lower than the radiation body A (the main radiation body), to 2.8 GHz, which is higher than the radiation body A. The change is shown in the white circle 3. Figure 7

[0251] The radiation body frequency change 74: the working frequency of the radiation body C changes from 4.3 GHz, which is higher than the radiation body A (the main radiation body), to 2.2 GHz, which is lower than the radiation body A. The change is shown in the white circle 4. Figure 5A

[0252] The radiation body frequency change 73 can change the current direction of the radiation body F from the opposite direction of the radiation body A to the same direction of the radiation body A. The radiation body frequency change 74 can change the current direction of the radiation body C from the opposite direction of the radiation body A to the same direction of the radiation body A. The related description about the current direction change of the radiation body F and the radiation body C can refer to the foregoing description about the white circle 3 in the first embodiment, which will not be repeated here. Figure 6 The related description about the white circle 3 in the first embodiment can be referred to, which will not be repeated here.

[0253] It should be understood that, Figure 7 and Figure 8 The working frequencies of the radiation bodies shown in the first embodiment are for example, and other values can be used in actual situations. For example, the working frequency of the same radiation body is 1 GHz higher or lower than the working frequency. This should not be construed as a limitation on the embodiments of the present application.

[0254] The process of adjusting the frequencies of the radiation bodies by at least one frequency control circuit to make the expected current directions of the radiation bodies conform to the target current direction 11 in the wifi single-state scenario is described below in combination with the preset frequency adjustment rule 21a. The difference between the adjustment process and the low-performance scenario is compared.

[0255] ​​Figure 8 The diagram shows the frequency control circuit settings involved in the single-state WiFi scenario and the low-performance scenario 11.

[0256] The following is based on Figure 7 Describe how to adjust Figure 8 The frequencies of each radiator are shown in the figure.

[0257] In the second antenna structure, radiators B and H are not connected to a frequency control circuit, and radiator H can be considered as a parasitic radiator primarily based on radiator B. The operating frequencies of radiators B and H can be equal and fixed within a single frequency band, approximately 2.55 GHz to 2.65 GHz. For example, the operating frequencies of radiators B and H could be 2.6 GHz, etc. This application does not limit this specific frequency.

[0258] The frequency control circuit is connected in radiators C, E, D, and F. The setting of the frequency control circuit described here is also a description of the frequency adjustment of radiators C, E, D, and F.

[0259] like Figure 8 As shown in Figure (1), the frequency control circuit setup is as follows in a single-state Wi-Fi scenario. For radiator C, the electronic device closes (ON) switch unit s1 and opens (OFF) switch unit s2 in frequency control circuit 400c, making the frequency modulation branch 421 conduct. Thus, radiator C is equivalent to being connected to a capacitor of approximately 1.5pF, and the frequency is adjusted to approximately 2.0 GHz. For radiator E, the electronic device opens (OFF) switch unit s3 and closes (ON) switch unit s4 in frequency control circuit 400e, making the frequency modulation branch 424 conduct. Thus, radiator E is equivalent to being connected to an inductor of approximately 9n, and the frequency is adjusted to approximately 2.8 GHz. For radiator D, the electronic device opens (OFF) both switch units s5 and s6 in frequency control circuit 400d, making the frequency modulation branch 420 conduct. Thus, radiator D is equivalent to being connected to a lumped element consisting of a capacitor (approximately 1pF) in series with an inductor (approximately 0.6n), and the frequency is adjusted to approximately 2.2 GHz. For the radiator F, the electronic device turns on (OFF) switch unit s7 and closes (ON) switch unit s8 in the frequency control circuit 400f, thus turning on the frequency modulation branch 428. In this way, the radiator F is equivalent to a lumped element connected to a capacitor (about 2.4pF) in parallel with an inductor (about 1nF), and the frequency is adjusted to about 3 GHz.

[0260] like Figure 9As shown in FIG. 2, the settings for the frequency control circuit in the low performance scenario 11. For radiator C, the electronic device closes (ON) both the switch unit s2 and the switch unit s1 in the frequency control circuit 400c, so that both the frequency tuning branch 421 and the frequency tuning branch 422 are turned on. In this way, the radiator C is equivalent to a lumped element connected with a capacitor (about 1.5p) in parallel with an inductor (about 1n), and the frequency is adjusted to a higher frequency band of about 4.3Ghz. For radiator E, the electronic device opens (OFF) both the switch unit s4 and the switch unit s3 in the frequency control circuit 400e, so that both the frequency tuning branch 423 and the frequency tuning branch 424 are not turned on. In this way, the frequency of the radiator E can be adjusted to about 2.8Ghz. For radiator D, the electronic device closes (ON) the switch unit s5 and opens (OFF) the switch unit s6 in the frequency control circuit 400d, so that the frequency tuning branch 425 is turned on. In this way, the radiator D is equivalent to an inductor of about 0.6n, and the frequency is adjusted to about 3.4Ghz. For radiator F, the electronic device closes (ON) the switch unit s7 and opens (OFF) the switch unit s8 in the frequency control circuit 400f, so that the frequency tuning branch 427 is turned on. In this way, the radiator F is equivalent to a capacitor of 0.7p, and the frequency is adjusted to about 2.5Ghz.

[0261] The benefits of the wifi single mode scenario compared with the low performance scenario 11 are described as follows.

[0262] Figure 9 The comparison chart of the radiation efficiency and the system efficiency of the antenna 2 in the wifi single mode scenario and the low performance scenario 11 obtained by the electronic device when performing the simulation effect test is shown in FIG. 3.

[0263] As shown in FIG. 3, the abscissa represents the frequency in Ghz, and the ordinate represents the efficiency (radiation efficiency or system efficiency) in dB. The closer the radiation efficiency and the system efficiency to 0dB, the better the radiation efficiency and the system efficiency of the antenna, respectively. The better the performance of the antenna. Figure 9

[0264] Figure 9 As shown in FIG. 3, the curve “radiation efficiency-wifi single mode” and the curve “radiation efficiency-scenario 11” represent the radiation efficiency of the antenna 2 when working in the wifi single mode scenario and the low performance scenario 11, respectively. At this time, the working frequency of the antenna 2 is 2.4Ghz. In the wifi single mode scenario, the radiation efficiency of the antenna 2 is about -1.8dB, and in the low performance scenario 11, the radiation efficiency of the antenna 2 is about -2.8dB. Therefore, compared with the low performance scenario 11, the radiation efficiency of the antenna 2 in the wifi single mode scenario is improved by about 1dB.

[0265] Figure 13 ​In the middle, the curve "system efficiency-wifi monostatic" and the curve "system efficiency-scenario 11" respectively represent the system efficiency of the antenna 2 when working in the wifi monostatic scenario and the low performance scenario 11. At this time, the working frequency of the antenna 2 is 2.4GHz, and the system efficiency of the antenna 2 in the wifi monostatic scenario is about -2.3dB, and the system efficiency of the antenna 2 in the low performance scenario 11 is about -3.3dB. Then, compared with the low performance scenario 11, the system efficiency of the antenna 2 in the wifi monostatic scenario is also improved by 1dB.

[0266] Low performance scenario 12:

[0267] When the working frequency of the antenna 1-antenna 3 is adjusted according to the preset frequency adjustment rule 11b, the electronic device enables 2.4G wifi communication and cellular network communication (in the B41 frequency band) mode, the antenna 1 is responsible for providing cellular network (in the B41 frequency band) communication mode, and the antenna 2 is responsible for providing 2.4G wifi communication mode. At this time, although the performance of the antenna 1 is good, the performance of the antenna 2 working in the wifi 2.4G frequency band is low, which causes the electronic device to have poor communication ability when communicating with other electronic devices based on the 2.4G wifi communication mode in the wifi and B41 coexistence state. Wherein, the wifi and B41 coexistence state refers to the communication in which the 2.4G wifi communication is enabled and the cellular network communication is in the B41 frequency band.

[0268] Wherein, the reason why the performance of the antenna 2 working in the wifi 2.4G frequency band is low in the low performance scenario 12 can be referred to the description of the antenna 2 in the low performance scenario 11, which is not described here. Figure 10

[0269] The following describes the improvement mode for the low performance scenario 12 and related content.

[0270] For the low performance scenario 12, the electronic device can change part of the radiators responsible for providing the cellular network communication (in the B41 frequency band) mode to be responsible for providing the 2.4G wifi communication mode, and retain part of the radiators to continue to be responsible for providing the cellular network communication (in the B41 frequency band) mode.

[0271] ​Based on the first antenna structure in this application, the electronic device can re-adjust the operating frequencies of the antenna 2 and the antenna 1 coupled thereto according to the preset frequency adjustment rule 21b, so that the current directions of each radiator in the antenna 1 and the antenna 2 are adjusted to the target current direction (denoted as target current direction 12), which is the current direction that meets the wifi and B41 coexistence state when the first antenna structure is adopted. The electronic device can change the operating frequency of part of the radiator responsible for providing the cellular network communication (in the B41 frequency band) mode so that it generates resonance for providing the 2.4G wifi communication mode, or the electronic device can change the operating frequency of part of the radiator responsible for providing the cellular network communication (in the B41 frequency band) mode so that it generates resonance that does not adversely affect the 2.4G wifi communication mode. In this way, the antenna 2 can better provide the 2.4G wifi communication mode while the antenna 1 continues to be responsible for providing the cellular network communication (in the B41 frequency band) mode. The performance of the antenna 2 can be improved while balancing the performance of the antenna 1. The reason for generating the target current direction can be referred to the foregoing description of the related description, which will not be described here.

[0272] The scenario of re-adjusting the operating frequencies of the antenna 2 and the antenna 1 according to the preset frequency adjustment rule 21b when the electronic device is in the wifi and B41 coexistence state can be referred to as the wifi and B41 coexistence state scenario.

[0273] Figure 10 The current direction comparison diagram in the wifi and B41 coexistence state scenario and the low performance scenario 12 is shown in FIG.

[0274] First, based on the foregoing reasons for generating the target current direction, combined with Figure 10 The target current direction 12 proposed for the wifi and B41 coexistence state scenario is described in detail.

[0275] Figure 10 A schematic diagram of a target current direction 12 is shown in FIG.

[0276] Referring to Figure 10 In FIG. (1), the expected current direction (target current direction 12) of each radiator in the antenna 1 and the antenna 2 when the operating frequencies of the antenna 2 and the antenna 1 are re-adjusted according to the preset frequency adjustment rule 21b is shown.

[0277] In the case that the electronic device is in the wifi and B41 coexistence state, the antenna 2 is mainly responsible for providing the 2.4G wifi communication mode for the electronic device. The antenna 1 is mainly responsible for providing the cellular network communication (in the B41 frequency band) communication mode for the electronic device.

[0278] The radiators primarily responsible for the B41 frequency band include radiator E and radiator F. Radiator E is the main radiator, and radiator F is a first-type radiator, whose desired current direction is the same as that of radiator E.

[0279] It should be understood here that the parasitic radiators of radiator E, in addition to radiator F, may also include radiators B, radiator D, etc. However, in the scenario where Wi-Fi and B41 coexist, the other radiators besides radiator F have a smaller impact on radiator E, but a larger impact on radiator A. They will not be described here, but will be described when discussing radiator A below.

[0280] The radiators primarily responsible for the 2.4GHz Wi-Fi band include radiator A, radiator B, and radiator D, and may also include radiator H. In this case, radiator A is the primary radiator. Radiators H and B are Class I radiators, and the desired current they generate is in the same direction as radiator A. Radiator D is a Class II radiator, and the desired current it generates is in the opposite direction to that of radiator A. Radiator C is a Class III radiator, and the desired current it generates is weaker to avoid interfering with radiators A or E.

[0281] The current in radiator C is weaker than that in radiator A and radiator E.

[0282] In some possible scenarios, such as the second antenna structure, where the electronic device is in a coexistence state of Wi-Fi and B41, the radiator C may not have a current distributed on it.

[0283] It should be understood here that in the scenario where Wi-Fi and B41 coexist, the parasitic radiators of radiator A, in addition to radiators B, D, and H, may also include parasitic radiators such as radiator F, but these have a relatively small impact on radiator A and will not be described here.

[0284] It should be understood that this is based on the direction of the current in radiators A (main radiator) and E (main radiator). Figure 10 The direction shown in (1) is used as an example for explanation. In reality, the current directions of radiator A and radiator E can also be different from those shown in (1). Figure 10 The direction shown in (1) is opposite. This application does not limit this.

[0285] Figure 10 (2) shows the current direction in low-performance scenario 12.

[0286] The following is combined with Figure 10 (2) and the aforementioned Figure 10In the middle (1), after describing the frequency modulation rule involved in this application, the reason for the performance improvement of the antenna 2 when the electronic device is in the wifi and B41 coexistence state is described in detail.

[0287] Reference Figure 10 In the middle (2), in the low performance scenario 12, the reasons for the low performance of the antenna 2 include but are not limited to one or more of the following reasons.

[0288] Low performance reason 12-1: the radiator D is a parasitic radiator of the radiator A (main radiator), and is a second type of radiator, but the current of the radiator D is in the same direction as the current of the radiator A. When the current of the radiator D is in the same direction as the current of the radiator A, the resonance generated thereby has an adverse effect on the radiator A.

[0289] In combination Figure 10 In the middle (1), and Figure 10 In the middle (2), for this low performance reason 12-1, there is a first change: the current of the radiator D changes from being in the same direction as the current of the radiator A to being in the opposite direction, which can improve the performance of the antenna 2. The first change for this low performance reason 12-1 is reflected in Figure 10 The white circle ① in the middle (2).

[0290] It should be understood that the reason for changing the current of the radiator D from being in the same direction as the current of the radiator A to being in the opposite direction is that the radiator D, although being a parasitic radiator of the radiator A, is not parallel to the radiator A and is close to the radiator A. When the current of the radiator D is in the opposite direction of the current of the radiator A, the resonance generated thereby has a positive parasitic radiation effect on the radiator A, which can improve the performance of the antenna 2.

[0291] Low performance reason 12-2: in the wifi and B41 coexistence state scenario, the coupling degree of the radiator C with the radiator A (main radiator) and the radiator E (main radiator) is relatively high, and when the current of the radiator C is strong, it may have an adverse effect on the other main radiator if it has a good parasitic radiation effect on one main radiator.

[0292] In combination Figure 10 In the middle (1), and Figure 11 In the middle (2), for this low performance reason 12-2, there is a second change: the current of the radiator C changes from being strong to being weak to reduce the adverse effect on the antenna 2 or the antenna 1. The second change for this low performance reason 12-2 is reflected in Figure 11 The white circle ② in the middle (2).

[0293] Figure 10 An exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in the wifi and B41 coexistence state scenario is shown.

[0294] As Figure 11 Fig. 1 shows the current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in the wifi and B41 coexistence state. The current direction of each radiator corresponds to the target current direction 12 shown in Fig. 1. The current direction of radiator D is opposite to that of radiator A. The current direction of radiator B is the same as that of radiator A. Moreover, based on the preset frequency adjustment rule 21a, the current direction of radiator D is opposite to that of radiator A. Figure 11 The current direction of each radiator in the target current direction 12 shown in Fig. 1 corresponds to the current direction of each radiator. The current direction of radiator D is opposite to that of radiator A. The current direction of radiator B is the same as that of radiator A. Moreover, based on the preset frequency adjustment rule 21a, the current direction of radiator D is opposite to that of radiator A. Figure 12 As can be seen from Fig. 1, the current of radiator C is weaker than that of other radiators.

[0295] As Figure 12 Fig. 2 shows the current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in the low performance state 12. At this time, the current direction of radiator D is the same as that of radiator A, which will cause the performance of antenna 2 (including radiator A) to decrease.

[0296] It should be understood here that for the first antenna structure, when the electronic device is in other states, the working frequencies of antenna 1 and antenna 2 can be adjusted according to the preset frequency adjustment rule 11, so that the electronic device can communicate with other electronic devices. The other state can be other states except the wifi single state and the wifi and B41 coexistence state. The embodiments of the present application will not be described here.

[0297] The preset frequency adjustment rule 21b involved in adjusting the target current direction 12 is further described.

[0298] In some possible cases, the preset frequency adjustment rule 21b is used to adjust the frequency high-low relationship of radiator A (main radiator) and the main parasitic radiator of the radiator A (including radiators B and H, and radiator D) when the electronic device is in the wifi and B41 coexistence state. It is also used to adjust the frequency high-low relationship of radiator E (main radiator) and the main parasitic radiator of the radiator E (including radiator F), so that the current distributed in each radiator satisfies the target current direction 12.

[0299] The working frequency of the radiator A (main radiator) is in the wifi 2.4G frequency band, for example, the working frequency A can be 2.4Ghz. The working frequency of the radiator D is less than and close to the working frequency A. The electrical length of the radiator B is greater than the preset length value 1, and the electrical length of the radiator H is greater than the preset length value 1, so that the radiator B and the radiator H can be regarded as a parasitic radiator with the radiator B as the main one, and the frequency of the radiator H and the radiator B can be the same. The working frequency of the radiator B is adjusted to be greater than and close to the working frequency A. Then, in the wifi and B41 coexistence state, the frequencies of the radiators mainly responsible for providing the 2.4G wifi communication mode from low to high involve the radiators in the following order: the radiator D, the radiator A, the radiator B and the radiator H.

[0300] The working frequency of the radiator E (main radiator) is in the B41 frequency band, for example, the working frequency E can be 2.55Ghz. The working frequency of the radiator F is greater than and close to the working frequency E, so that the expected current generated by the radiator F is in the same direction as the radiator E. Moreover, the working frequency of the radiator F involved in the wifi and B41 coexistence state is less than the working frequency of the radiator F involved in the aforementioned wifi single state. Then, in the wifi and B41 coexistence state, the frequencies of the radiators mainly responsible for providing the cellular network (in the B41 frequency band) communication mode from low to high involve the radiators in the following order: the radiator E, the radiator F.

[0301] In the wifi and B41 coexistence state, based on the preset frequency adjustment rule 21b, the working frequency of the radiator C (denoted as working frequency C1) can be adjusted to a frequency that is very different from the working frequency A and the working frequency E. In some possible cases, the working frequency of the radiator C can be adjusted to a very high position (greater than 4G), for example, 5G or the like. In this way, the current of the radiator C can become weaker to reduce the adverse effects on the antenna 2 or the antenna 1.

[0302] In combination with the above, in some possible cases, the radiators involved in the wifi and B41 coexistence state from low to high in the working frequency can be in the following order: the radiator D, the radiator A, the radiator E, the radiator B and the radiator H, the radiator F, and the radiator C.

[0303] Figure 12 A schematic diagram of a preset frequency adjustment rule 21b is shown.

[0304] Figure 12 The effect curve diagram of the S parameters of the antenna 1 and the antenna 2 in the wifi and B41 coexistence state obtained by the electronic device when performing the simulation effect test is shown. As shown in FIG. 6, the effect curve diagram of the S parameters of the antenna 1 and the antenna 2 in the wifi and B41 coexistence state obtained by the electronic device when performing the simulation effect test is shown. Figure 12The abscissa represents the frequency, the unit is Ghz, and the ordinate represents the amplitude value of S11, the unit is dB.

[0305] Figure 12 The curve "antenna 2-coexistence state" is referred to as curve Q21, and the curve "antenna 1-coexistence state" is referred to as curve Q22. In the curve Q21, the frequency relationship of each radiator in the antenna 2 and the corresponding frequency of each radiator in the wifi and B41 coexistence state are shown. In the curve Q22, the frequency relationship of each radiator in the antenna 1 and the corresponding frequency of each radiator in the wifi and B41 coexistence state are shown.

[0306] Figure 12 The letters A-F in the curve Q21 represent the radiators A-F, respectively, and the letters A-F in the curve Q22 represent the radiators A-F, respectively. Figure 10 It can be seen that in some possible cases, in the wifi and B41 coexistence state, the radiators responsible for the wifi 2.4G frequency band from low to high can be in the order of: radiator D (about 2.0Ghz), radiator A (about 2.4Ghz), radiator B and radiator H (about 2.6Ghz).

[0307] The radiators responsible for the wifi 2.4G frequency band from low to high can be in the order of: radiator E (about 2.55Ghz) and radiator F (about 2.8Ghz).

[0308] The working frequency (not shown) of the radiator C is adjusted to a very high position (greater than 4G), for example, 5G or the like. In this way, the current of the radiator C can be made weaker to reduce the adverse effects on the antenna 2 or the antenna 1.

[0309] Figure 12 The frequency relationship of each radiator shown in the curve Q21 conforms to the foregoing description of the preset frequency adjustment rule 21b. The desired current direction of each radiator in the antenna 1 and the antenna 2 can be the target current direction 12. The description of the target current direction 12 can refer to the foregoing description of the target current direction 12 in the (1) of the curve Q21, which will not be described here. Figure 13

[0310] It should also be understood here that in the wifi single state scenario, the antenna 1 and the antenna 2 can share the radiator D. Figure 13 The radiator D is exemplified as belonging to the antenna 1. In actual cases, the radiator D can also be exemplified as belonging to the antenna 2, which is not limited in the embodiments of the present application.

[0311] Figure 13 A comparison diagram of the frequency adjustment rule in the wifi and B41 coexistence state and the low performance scenario 12 is shown.

[0312] Figure 13 ​Fig. 6 is a graph showing the comparison of the S parameters of the antenna 1 and the antenna 2 in the coexistence state of WiFi and D41 and the low performance scenario 12 when the electronic device is performing the simulation effect test. As shown in Fig. 6, the abscissa represents the frequency, and the unit is Ghz. The ordinate represents the amplitude value of S11, and the unit is dB. Figure 12 As described above, the abscissa represents the frequency, and the unit is Ghz. The ordinate represents the amplitude value of S11, and the unit is dB.

[0313] Figure 13 The graph includes four curves: the curve “antenna 2-coexistence state” is referred to as the curve Q21, the curve “antenna 1-coexistence state” is referred to as the curve Q22, the curve “antenna 2-scenario 12” is referred to as the curve Q23, and the curve “antenna 1-scenario 12” is referred to as the curve Q24. In the curve Q23, the frequency relationship between the radiators of the antenna 2 and the corresponding frequencies of the radiators in the low performance scenario 12 are shown. In the curve Q24, the frequency relationship between the radiators of the antenna 1 and the corresponding frequencies of the radiators in the low performance scenario 11 are shown. The descriptions of the curve Q21 and the curve Q22 are the same as the descriptions of the curve Q11 and the curve Q12, which are not repeated here. Figure 13 The descriptions of the curve Q21 and the curve Q22 are the same as the descriptions of the curve Q11 and the curve Q12, which are not repeated here.

[0314] It should be understood that, Figure 13 The curve Q23 and the curve Q24 shown in the graph are a case in the low performance scenario 12. In this case, the working frequency of the antenna 1 in the low performance scenario 12 is the middle-high frequency B41 frequency band (referred to as MHBB41).

[0315] Figure 10 The letters A-F in the graph represent the radiator A to the radiator F, respectively, and the descriptions of the curve Q11 and the curve Q12 are the same as the descriptions of the curve Q1 and the curve Q2, which are not repeated here. Figure 13 It can be seen that in the low performance scenario 12, the radiators mainly responsible for the WiFi 2.4G frequency band include the radiator A (the main radiator) and the main parasitic radiator of the radiator A, including the radiator B and the radiator H. The radiators mainly responsible for the B41 frequency band include the radiator E (the main radiator) and the main parasitic radiator of the radiator E, including the radiator F and the radiator C.

[0316] In the low performance scenario 12, the radiators mainly responsible for the WiFi 2.4G frequency band can be in the order of the radiator A (about 2.4Ghz), the radiator B and the radiator H (about 2.6Ghz) from low to high. The radiators mainly responsible for the WiFi 2.4G frequency band can be in the order of the radiator E (about 2.55Ghz), the radiator F (about 3.0Ghz) and the radiator C (about 3.5Ghz) from low to high. The working frequency (not shown) of the radiator D is adjusted to a very high position (greater than 4G), for example, 4.6G, etc. In this way, the current of the radiator D becomes weaker to reduce the adverse effects on the antenna 2 or the antenna 1. This can be understood as an example of the frequency adjustment rule 11b described above.

[0317] The frequency of each radiator shown in the curve Q23 and the curve Q24 can be such that the current direction of each radiator in the antenna 1 and the antenna 2 is the current direction in the low performance scenario 12 described above. For the current direction in the low performance scenario 12, reference can be made to the description of the low performance scenario 12 described above, which will not be repeated here. Figure 10

[0318] Compared with the working frequency of each radiator determined by the preset frequency adjustment rule 21b, it can be seen that the working frequency of at least one radiator in the wifi and B41 coexistence state scenario is changed compared with the low performance scenario 12. For example, but not limited to the following changes.

[0319] Radiation frequency change 31: the working frequency of the radiator D changes from 4.6 GHz, which is higher than the working frequency of the radiator A (the main radiator), to 2.0 GHz, which is lower than the working frequency of the radiator A. The change is shown at the white circle ① in the figure. Figure 13 The radiation frequency change 31 can make the current direction of the radiator D change from the same direction as the radiator A to the opposite direction of the radiator A. For the related description of the change of the current direction of the radiator D, reference can be made to the related description of the white circle ① in the low performance scenario 12 described above, which will not be repeated here. Figure 10

[0320] Radiation frequency change 32: the working frequency of the radiator C changes from 3.5 GHz to 5.0 GHz, which is further away from the working frequency of the radiator A. The change is shown at the white circle ② in the figure. Figure 12 The radiation frequency change 32 can make the current of the radiator C change from strong to weak. For the related description of the change of the current of the radiator C, reference can be made to the related description of the white circle ② in the low performance scenario 12 described above, which will not be repeated here. Figure 13

[0321] It should be understood here that, Figure 14 and Figure 14 The working frequency of each radiator shown in the figure can be taken as an example, and other values can be used in actual situations. For example, the working frequency of the same radiator is 1 GHz higher or lower than the working frequency. This should not be construed as a limitation on the embodiments of the present application.

[0322] The following describes the process of adjusting the frequency of each radiator in the wifi and B41 coexistence state scenario by at least one frequency control circuit to make the expected current direction of each radiator meet the target current direction 12 in combination with the preset frequency adjustment rule 21b. At the same time, the difference between the adjustment process and the low performance scenario is compared.

[0323] Figure 13 ​​​The wifi single mode scenario and the low performance scenario 12 are shown.

[0324] The following is based on Figure 14 How to adjust Figure 14 The frequency of each radiator shown in the middle.

[0325] The frequency control circuit is connected in the radiator C, the radiator E, the radiator D and the radiator F, and the setting of the frequency control circuit involved here is also described for the frequency adjustment of the radiator C, the radiator E, the radiator D and the radiator F.

[0326] As Figure 15 The frequency control circuit setting in the wifi and B41 coexistence state scenario is shown in (1). For the radiator C, the electronic device opens (OFF) the switch unit s1 in the frequency control circuit 400c and closes (ON) s2, so that the frequency adjustment branch 422 is turned on. In this way, the radiator C is equivalent to connecting an inductance of about 1n, and the frequency is adjusted to a higher frequency, for example, about 5.0Ghz. For the radiator E, the electronic device opens (OFF) the switch unit s4 in the frequency control circuit 400e and closes (ON) s3, so that the frequency adjustment branch 423 is turned on. In this way, the radiator E is equivalent to connecting an inductance of about 4.3n, and the frequency is adjusted to about 2.55Ghz. For the radiator D, the electronic device opens (OFF) the switch unit s5 in the frequency control circuit 400d and closes (ON) the switch unit s6, so that the frequency adjustment branch 426 is turned on. In this way, the radiator D is equivalent to connecting a lumped element after an inductance (about 0.6n) in series with a capacitance (about 1.5p), and the frequency is adjusted to about 2.0Ghz. Among them, the capacitance of about 1.5p is the sum of about 1p capacitance included in the frequency adjustment branch 426, about 0.4 capacitance, and the sum of 1.4p and 0.1p (the switch unit S5 can be regarded as 0.1p capacitance when it is open). For the radiator F, the electronic device closes (ON) both the switch unit s7 and the switch unit s8 in the frequency control circuit 400f, so that the frequency adjustment branch 427 and the frequency adjustment branch 428 are both turned on. In this way, the radiator F is equivalent to connecting a lumped element after a capacitance (about 2.4p) in parallel with an inductance (about 1n) and another capacitance (about 0.7p), and the frequency is adjusted to about 2.8Ghz.

[0327] As Figure 15As shown in FIG. 2, the settings for the frequency control circuit in the low performance scenario 12. For radiator C, the electronic device closes (ON) both the switch unit s2 and the switch unit s1 in the frequency control circuit 400c, so that both the frequency tuning branch 421 and the frequency tuning branch 422 are turned on. In this way, the radiator C is equivalent to a lumped element connected with a capacitor (about 1.5p) in parallel with an inductor (about 1n), and the frequency is adjusted to a higher frequency band, for example, about 5Ghz. For radiator E, the electronic device closes (ON) the switch unit s3 and opens (OFF) the switch unit s4 in the frequency control circuit 400e, so that the frequency tuning branch 423 is turned on. In this way, the radiator E is equivalent to an inductor (about 4.3n). The frequency of the radiator E can be adjusted to about 2.55Ghz. For radiator D, the electronic device closes (ON) the switch unit s5 and opens (OFF) the switch unit s6 in the frequency control circuit 400d, so that the frequency tuning branch 425 is turned on. In this way, the radiator D is equivalent to an inductor (about 0.6n), and the frequency is adjusted to about 4.6Ghz. For radiator F, the electronic device opens (OFF) both the switch unit s7 and the switch unit s8 in the frequency control circuit 400f, so that the frequency tuning branch 429 is turned on. In this way, the radiator F is equivalent to a lumped element connected with a capacitor (about 2.7p) in parallel with an inductor (about 1n) and then connected with another inductor (about 5n) in series, and the frequency is adjusted to about 3Ghz.

[0328] The beneficial effects of the low performance scenario 12 compared with the wifi and B41 coexistence scenario are described as follows.

[0329] Figure 15 The comparison chart of the efficiencies of the antenna 2 in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained by the electronic device when performing the simulation effect test is shown in FIG. 2.

[0330] As shown in FIG. 2, the horizontal axis represents the frequency in Ghz, and the vertical axis represents the efficiency (radiation efficiency or system efficiency) in dB. Figure 15

[0331] In FIG. 2, the curve “radiation efficiency-coexistence scenario” and the curve “radiation efficiency-scenario 12” respectively represent the radiation efficiencies of the antenna 2 when working in the wifi and B41 coexistence scenario and the low performance scenario 12. At this time, the working frequency of the antenna 2 is 2.4Ghz, the radiation efficiency of the antenna 2 in the wifi and B41 coexistence scenario is about -2.7dB, and the radiation efficiency of the antenna 2 in the low performance scenario 12 is about -3.5dB. Then, compared with the low performance scenario 12, the radiation efficiency of the antenna 2 in the coexistence scenario is improved by about 0.8dB. Figure 16

[0332] Figure 16 ​In the diagram, curves "System Efficiency - Coexistence State" and "System Efficiency - Scenario 12" represent the system efficiency of antenna 2 in the coexistence state scenario of Wi-Fi and B41 and the low-performance scenario 12, respectively. At this point, antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi and B41 coexistence state scenario, the system efficiency of antenna 2 is approximately -2.8 dB, and in low-performance scenario 12, the system efficiency of antenna 2 is approximately -3.6 dB. Therefore, compared to low-performance scenario 12, the system efficiency of antenna 2 in the coexistence state is also improved by approximately 0.8 dB.

[0333] Figure 16 This is a comparison chart of the efficiency of antenna 1 under the scenarios of WiFi coexistence with B41 and low-performance scenario 11, obtained during the simulation effect test of electronic devices.

[0334] like Figure 16 As shown in Figure (1), the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The curves “Radiation Efficiency - Coexistence State” and “Radiation Efficiency - Scenario 12” represent the radiation efficiency of antenna 1 in the coexistence state scenario and the low-performance scenario 12, respectively. The curves “System Efficiency - Coexistence State” and “System Efficiency - Scenario 12” represent the system efficiency of antenna 1 in the coexistence state scenario and the low-performance scenario, respectively. At this time, the operating frequency of antenna 1 is 2.55 GHz. In the coexistence state scenario, the radiation efficiency and system efficiency of antenna 1 are both about -2.9 dB. In the low-performance scenario 12, the radiation efficiency and system efficiency of antenna 1 are both about -2.2 dB. Compared with the low-performance scenario 12, the radiation efficiency of antenna 1 in the coexistence state of Wi-Fi and B41 is reduced by about 0.7 dB.

[0335] like Figure 15 As shown in Figure (2), the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (transmission efficiency) in dB. A lower transmission efficiency (farther than 0 dB) indicates better antenna transmission efficiency and better antenna performance. A transmission efficiency value less than -6 dB indicates good antenna transmission efficiency, while a value greater than -6 dB indicates poor antenna transmission efficiency. Figure 16 As shown in Figure (2), the curves “Emission Efficiency - Coexistence State” and “Emission Efficiency - Scenario 12” represent the transmission efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 12, respectively. The transmission efficiency indicated by point K11 is smaller than that indicated by K12. Therefore, the transmission efficiency of antenna 1 in the coexistence state is slightly worse than that in the low-performance scenario 12.

[0336] Combination Figure 17 as well as Figure 17It can be seen that although the performance of the antenna 1 is reduced, the radiation efficiency of the antenna 1 and the system efficiency are at the position of -2.9 dB, and the transmission efficiency is below -6 dB, which means that although the performance of the antenna 1 is reduced, it is still good. And the performance of the antenna 2 is improved. It can be understood that the performance of the antenna 2 is improved while balancing the performance of the antenna 1.

[0337] The second antenna structure is described in detail below.

[0338] Figure 17 An example diagram of the second antenna structure is shown.

[0339] As Figure 18 As shown in (1), in the second antenna structure, the arrangement of each radiator is a linear arrangement, and each radiator is arranged in the frame 1 of the electronic device. The frame 1 can be a horizontal frame or a vertical frame. The radiator E, the radiator C, the radiator A and the radiator G are arranged in the frame 1 of the first device main body 100. The radiator F, the radiator D, the radiator B and the radiator H are arranged in the frame 1 of the second device main body 200.

[0340] In the second antenna structure, the radiators A-D satisfy the aforementioned fixed arrangement. The description of the fixed arrangement can be referred to the foregoing, which will not be described here. The radiators E, F, G and H are the same or similar to the radiators E-H in the first antenna structure except for the arrangement. The description of the radiators E-H in the first antenna structure can be referred to, which will not be described here.

[0341] The antenna 2 is coupled to the antenna 1 and the antenna 3 respectively. The coupling form of the antenna 2 and the antenna 1 includes that the radiator C is coupled to the radiator E through the gap 105e, and the opening end 103c of the radiator C is arranged opposite to the opening end 103e of the radiator E. The radiator D is coupled to the radiator F through the gap 105f, and the opening end 203d of the radiator D is arranged opposite to the opening end 203f of the radiator F. The length of the gap 105e has no relationship with the length of the aforementioned gap 105c. The gap 105e and the gap 105c can be equal in length, or one of them can be longer than the other. The length of the gap 105d has no relationship with the length of the aforementioned gap 105f. The gap 105d and the gap 105f can be equal in length, or one of them can be longer than the other.

[0342] The coupling form of the antenna 2 and the antenna 3 includes: the radiator A is coupled with the radiator G through the gap 105g, and the open end 103g of the radiator G is arranged opposite to the open end 103a of the radiator A. The radiator B is coupled with the radiator H through the gap 105h, and the open end 203b of the radiator B is arranged opposite to the open end 203h of the radiator H. Wherein, the length of the gap 105h has no relationship with the length of the aforementioned gap 105b. The length of the gap 105h and the length of the gap 105b can be equal, and one of them can be longer than the other. The length of the gap 105g has no relationship with the length of the aforementioned gap 105a. The length of the gap 105g and the length of the gap 105a can be equal, and one of them can be longer than the other.

[0343] In the case of the antenna 2 coupled with the antenna 1 and the antenna 3, the antenna 2 can share the radiator C, the radiator D and the radiator F with the antenna 1. The antenna 2 can share the radiator B and the radiator H with the antenna 1. That is, the antenna 2 can include the radiator A-radiator D, and further include the radiator H and the radiator F. The antenna 1 can include the radiator E, the radiator F, the radiator C and the radiator D. The antenna 3 can include the radiator G, the radiator H and the radiator B.

[0344] As shown in (2) of FIG. 5, the electronic device can further include a frequency control circuit 500c, a frequency control circuit 500e, a frequency control circuit 500d and a frequency control circuit 500f. Figure 18 The connection point 106c of the radiator C is connected to the first floor in the first device body 100 through the frequency control circuit 500c. The frequency control circuit 500c includes a switching device 510c and a plurality of frequency tuning branches C2 arranged in parallel. The switching device 510c is used to select at least one frequency tuning branch C2, so as to adjust the frequency of the radiator C. The switching device 510c can include at least one switching unit. The switching device 510c can select at least one frequency tuning branch C2 by switching the closing (ON) and opening (OFF) of the switching unit. For example, the plurality of frequency tuning branches C2 can include a frequency tuning branch 521 and a frequency tuning branch 522. Wherein, the frequency tuning branch 521 is connected with a switching unit w1, and the switching unit w1 is used to control whether the frequency tuning branch 521 is turned on. The frequency tuning branch 522 is connected with a switching unit w2, and the switching unit w2 is used to control whether the frequency tuning branch 522 is turned on. In the case that the switching device 510c controls the switching unit w1 to be closed (ON) and controls the switching unit w2 to be opened (OFF), it means that the switching device 510c selects the frequency tuning branch 521 and does not select the frequency tuning branch 522. Other selection conditions of the switching device 510c can refer to the above description, and will not be described here.

[0345]

[0346] ​In some possible cases, the connection point 106c is arranged close to the open end 103e of the radiator E.

[0347] The feeding point 104e of the radiator E is connected to the first floor in the first device body 100 through the frequency control circuit 500e. The frequency control circuit 500e includes a switching device 510e and a plurality of frequency tuning branches E2 arranged in parallel. The switching device 510e is used to select at least one frequency tuning branch E2 to adjust the frequency of the radiator E. The switching device 510e can include at least one switching unit. The switching device 510e can select at least one frequency tuning branch E2 by switching the switching unit between ON and OFF. For example, the plurality of frequency tuning branches E2 can include a frequency tuning branch 523 and a frequency tuning branch 524. The frequency tuning branch 523 is connected to a switching unit w3, which is used to control whether the frequency tuning branch 523 is turned on. The frequency tuning branch 524 is connected to a switching unit w4, which is used to control whether the frequency tuning branch 524 is turned on. The selection of the switching device 510e can refer to the above description, and will not be described here.

[0348] In some possible cases, the feeding point 104e is arranged close to the open end 103e of the radiator E.

[0349] The connection point 106d of the radiator D is connected to the second floor in the second device body 200 through the frequency control circuit 500d. The frequency control circuit 500d includes a switching device 510d and a plurality of frequency tuning branches D2 arranged in parallel. The switching device 510d is used to select at least one frequency tuning branch D2 to adjust the frequency of the radiator D. The switching device 510d can include at least one switching unit. The switching device 510d can select at least one frequency tuning branch D2 by switching the switching unit between ON and OFF. For example, the plurality of frequency tuning branches D2 can include a frequency tuning branch 525 and a frequency tuning branch 526. The frequency tuning branch 525 is connected to a switching unit w5, which is used to control whether the frequency tuning branch 525 is turned on. The frequency tuning branch 526 is connected to a switching unit w6, which is used to control whether the frequency tuning branch 526 is turned on. The selection of the switching device 510d can refer to the above description, and will not be described here.

[0350] In some possible cases, the connection point 106d is arranged close to the open end 203d of the radiator E.

[0351] The connection point 106f of the radiator F is connected to the second floor in the second device main body 200 through the frequency control circuit 500f. The frequency control circuit 500f includes a switching device 510f and a plurality of frequency tuning branches C2 connected in parallel. The switching device 510f is used to select at least one frequency tuning branch C2 to adjust the frequency of the radiator F. The switching device 510f can include at least one switching unit. The switching device 510f can select at least one frequency tuning branch C2 by switching the switching unit from ON to OFF. For example, the plurality of frequency tuning branches C2 can include a frequency tuning branch 527 and a frequency tuning branch 528. The frequency tuning branch 527 is connected to a switching unit w7, which is used to control whether the frequency tuning branch 527 is turned on or not. The frequency tuning branch 528 is connected to a switching unit w8, which is used to control whether the frequency tuning branch 528 is turned on or not. The selection of the switching device 510f can refer to the above description, which will not be repeated here.

[0352] In some possible cases, the connection point 106f is arranged close to the open end 203f of the radiator E.

[0353] It should be understood that each matching branch can include one or more lumped elements, such as one or more of resistors, capacitors, inductors, etc. The lumped elements included in different matching branches can be different. The types, parameter values, or numbers of the lumped elements included in different matching branches can be different.

[0354] Figure 21 The first antenna structure is shown in an exemplary arrangement in an electronic device.

[0355] As Figure 27 shown, the radiator G, the radiator A, the radiator C, and the radiator E are arranged in the horizontal frame of the first device main body 100 of the electronic device.

[0356] The radiator H, the radiator B, the radiator D, and the radiator F are arranged in the horizontal frame of the second device main body 200 of the electronic device.

[0357] The following describes in detail how to tune the frequency based on the second antenna structure to improve the performance of the antenna in the folded state.

[0358] In the case of the second antenna structure, the operating frequency range of the antennas 1-3 and the communication mode provided by each antenna for the electronic device can be the same as the first antenna structure described above. The specific content can refer to the description of the related content described above, which will not be repeated here.

[0359] However, when the working frequencies of the antennas 1-3 are adjusted according to the preset frequency adjustment rule 12, the following low-performance scenario may occur: when the antenna responsible for providing the communication mode A (antenna A) has low performance, the folding screen electronic device has poor communication capability when communicating with other electronic devices in this communication mode A. The following two low-performance scenarios (low-performance scenario 21 and low-performance scenario 22) that occur when the electronic device sets the second antenna structure and uses the preset frequency adjustment rule 12 and the solutions to these low-performance scenarios are described below. The preset frequency adjustment rule 12 can include the following frequency adjustment rules 12a and 12b. For related descriptions of the frequency adjustment rules 12a and 12b, please refer to the following descriptions, for example, the preset frequency adjustment rule 12a can refer to the description of the related content in the Figure 21 frequencies adjustment rule 12a. The preset frequency adjustment rule 12b can refer to the description of the related content in the Figure 19A frequencies adjustment rule 12b.

[0360] Low-performance scenario 21:

[0361] When the working frequencies of the antennas 1-3 are adjusted according to the preset frequency adjustment rule 12a, the electronic device is in the wifi single state, and the antenna 2 has low performance when working in the wifi 2.4G frequency band, which causes the electronic device to have poor communication capability when communicating with other electronic devices in the wifi single state. For related descriptions of the wifi single state, please refer to the foregoing descriptions, which are not repeated here.

[0362] The reason why the antenna 2 has low performance when working in the wifi 2.4G frequency band in the low-performance scenario 21 can refer to the description of the Figure 19B , which is not repeated here.

[0363] The following describes the improvement method for the low-performance scenario 21 and related content.

[0364] For low-performance scenario 21, based on the second antenna structure in this application, when the electronic device is in Wi-Fi single-mode, the operating frequencies of antenna 2 and its coupled antenna 1 can be readjusted according to a preset frequency modulation rule 22a. This adjusts the current direction of each radiator in antenna 1 and antenna 2 to the target current direction (denoted as target current direction 21). This target current direction 21 is the current direction that satisfies the Wi-Fi single-mode when using the second antenna structure. Each radiator in antenna 1 and antenna 2 can then be used to provide 2.4G Wi-Fi communication, thereby improving the performance of antenna 2 and enhancing the communication capability of the electronic device when communicating with other electronic devices using 2.4G Wi-Fi. Antenna 1 is responsible for providing cellular network communication. Since the electronic device in low-performance scenario 21 does not enable the communication mode provided by antenna 1, the operating frequency of antenna 1 can be adjusted to assist antenna 2 in improving its performance. The reason for generating the target current direction can be found in the aforementioned description of generating the target current direction, and will not be repeated here.

[0365] Figure 19A The diagram shows a comparison of current direction in both the Wi-Fi single-state scenario and the low-performance scenario 21.

[0366] Figure 19B An exemplary current distribution simulation diagram is shown when the electronic device is in Wi-Fi singlet mode.

[0367] Firstly, based on the aforementioned reasons for generating the target current direction, combined with... Figure 19A as well as Figure 19A The target current direction 21 proposed for the single-state Wi-Fi scenario is described in detail.

[0368] Figure 5A Figure (1) shows a schematic diagram of a target current direction 21.

[0369] refer to Figure 5A Figure (1) shows the desired current direction (target current direction 21) of each radiator in antenna 1 and antenna 2 when the operating frequency of antenna 2 and antenna 1 coupled to it is readjusted according to preset frequency modulation rule 22a. When the electronic device is in Wi-Fi single-mode, antenna 2 is responsible for providing 2.4G Wi-Fi communication to the electronic device, and radiator A is the main radiator. Radiators H, B, D, F, C and E are parasitic radiators. Among them, based on the above, radiators H, B, D, F, C and E are all first-type radiators, and the desired current direction they generate is in the same direction as radiator A.

[0370] It should be understood that this is based on the direction of the current in radiator A (the main radiator). Figure 19AThe direction shown in (1) is taken as an example for illustration. In actual cases, the current direction of the radiator A can also be opposite to Figure 19A The direction shown in (1) is taken as an example for illustration. In actual cases, the current direction of the radiator A can also be opposite to

[0371] Figure 19A (2) shows the current direction in the low-performance scenario 21.

[0372] The following describes the reasons for the performance improvement of the antenna 2 when the electronic device is in the wifi single state, in combination with Figure 19A (2) and the aforementioned Figure 19A (1) describes in detail the reasons for the performance improvement of the antenna 2 when the electronic device is in the wifi single state, after using the frequency adjustment rule involved in the present application.

[0373] Reference is made to Figure 19A (2), in the low-performance scenario 21, the reasons for the low performance of the antenna 2 include but are not limited to the following reasons.

[0374] Low-performance reason 21-1: the radiators F, D, E and C are the first type of radiators, but the generated current is opposite to that of the radiator A, and the parasitic resonance generated thereby has an adverse effect on the radiator A, resulting in a decrease in the performance of the antenna 2.

[0375] In combination with Figure 19A (1) and Figure 19B (2), for this low-performance reason 21-1, there is a first change: the current generated by the radiators F, D, E and C changes from being opposite to the radiator A (the main radiator) to being in the same direction, which can improve the performance of the antenna 2. The first change for this low-performance reason 21-1 is reflected in Figure 19A the white circle ① in (1).

[0376] As Figure 20 shown, it is an exemplary current distribution simulation diagram when the electronic device is in the wifi single state, which corresponds to the target current direction 21 shown in Figure 20 (1). The current directions of the radiators B-E are the same as that of the radiator A.

[0377] The preset frequency adjustment rule 22a involved in adjusting the target current direction 21 is further described.

[0378] In some possible cases, the preset frequency adjustment rule 22a is used to adjust the frequency relationship between the radiator A (the main radiator) and each parasitic radiator of the radiator A.

[0379] The preset frequency adjustment rule 22a can comprise: for the second antenna structure, when the electronic device is in the wifi single state, adjusting the operating frequency (denoted as operating frequency A) of the radiator A (the main radiator) to belong to the wifi 2.4G frequency band (denoted as frequency band A), for example, the operating frequency A can be 2.4Ghz. The operating frequency of the radiator C is less than and close to the operating frequency A. The electrical length of the radiator B is greater than the preset length value 1, and the electrical length of the radiator H is greater than the preset length value 1, so that the radiator B and the radiator H can be regarded as a parasitic radiator with the radiator B as the main one, and then the frequency of the radiator H is regarded as the same as the frequency of the radiator B. And adjust the operating frequency of the radiator B to be greater than and close to the operating frequency A. The operating frequency of the radiator D is greater than and close to the operating frequency A. The operating frequency of the radiator E is greater than and close to the operating frequency A. The operating frequency of the radiator F is greater than and close to the operating frequency A.

[0380] In some possible cases, the operating frequency of the parasitic radiator closer to the radiator A (the main radiator) can be set closer to the operating frequency A. Since the distance from the radiator can be from near to far, the radiator D, the radiator B, the radiator E, and the radiator F, then in the wifi single state, the involved radiators from low to high frequency can be: the radiator C, the radiator A, the radiator D, the radiator B and the radiator H, the radiator E, and the radiator F.

[0381] It should be understood here that the radiator A (the main radiator) is the main radiator with the highest coupling degree with the radiator C, the radiator D, the radiator B, the radiator E, and the radiator F. The radiator H can be regarded as a parasitic radiator with the radiator B as the main one, and the current direction generated thereby is the same as that of the radiator B. Based on the above-mentioned reasons for generating the target current direction, the target current direction 21 can be generated by combining the preset frequency adjustment rule 22a and the above-mentioned reasons for generating the target current direction, so that the performance of the antenna 2 is improved.

[0382] It should be understood that the foregoing describes that the radiator C, the radiator D, the radiator B, the radiator H, the radiator E and the radiator F are all parasitic radiators of the radiator A (the main radiator). By adjusting the working frequencies of the respective parasitic radiators, suitable parasitic resonances are generated after the main radiator resonates to improve the performance of the antenna 2. In actual cases, more or fewer parasitic radiators than those described above can be used to generate parasitic resonances to improve the performance of the antenna 2. For example, in other possible cases, only the radiator C, the radiator D and the radiator B can be used as parasitic radiators of the radiator A (the main radiator) to generate suitable parasitic resonances after the main radiator resonates to improve the performance of the antenna 2. At this time, the preset frequency adjustment rule 21a can include that the working frequency (denoted as working frequency A) of the radiator A (the main radiator) belongs to the wifi 2.4G frequency band (denoted as frequency band A), for example, the working frequency A can be 2.4Ghz. The working frequency of the radiator C is less than and close to the working frequency A. Based on the foregoing, at this time, the working frequencies of the radiator C, the radiator D and the radiator B and the working frequency of the radiator A (the main radiator) from low to high involve the radiators described above, which can be: the radiator C, the radiator A (the main radiator), the radiator D and the radiator B.

[0383] Figure 20 A schematic diagram of a preset frequency adjustment rule 22a is shown.

[0384] Figure 20 The effect curve graph of the S parameters of the antenna 1 and the antenna 2 in the wifi single-state scene obtained by the electronic device when the simulation effect test is performed. The abscissa represents the frequency, the unit is Ghz, and the ordinate represents the amplitude value of S11, the unit is dB.

[0385] Figure 20 The graph includes two curves: curve “antenna 2-wifi single-state”, abbreviated as curve Q11, and curve “antenna 1-wifi single-state”, abbreviated as curve Q12. In the curve Q11, the frequency high-low relationship of each radiator in the antenna 2 and the corresponding frequency of each radiator in the wifi single-state scene are shown. In the curve Q12, the frequency high-low relationship of each radiator in the antenna 1 and the corresponding frequency of each radiator in the wifi single-state scene are shown.

[0386] Figure 20 The letters A-F in the graph respectively represent the radiator A-F, and the working frequencies of the respective radiators are shown in the graph. Figure 19A It can be known that the respective radiators involved from low to high in the frequency in the wifi single-state scene can be: the radiator C (about 2.1Ghz), the radiator A (about 2.4Ghz), the radiator D (about 2.6Ghz), the radiator B and the radiator H (about 2.8Ghz), the radiator E (about 2.9Ghz), and the radiator F (about 3.4Ghz). It conforms to the foregoing description of the preset frequency adjustment rule 22a.Figure 20 The frequency high-low relationship of each radiator in the antenna 1 and the antenna 2 can make the desired current direction of each radiator in the antenna 1 and the antenna 2 be the target current direction 21. The description about the target current direction 21 can refer to the foregoing description about the target current direction 21 in the antenna 1 in (1), which will not be described herein again. Figure 20

[0387] It should be understood herein that, as shown in the antenna 1 in (1), the reason for adjusting the frequencies of the radiator D and the radiator B to be closer to the radiator A (the main radiator) than the frequencies of the radiator E and the radiator F is that the radiator B and the radiator D are closer to the radiator A than the radiator E and the radiator F, and are more likely to have a positive parasitic radiation effect on the radiator A by satisfying the fixedly set radiator pair. Figure 21

[0388] It should also be understood herein that, in the wifi single-state scenario, the antenna 1 and the antenna 2 can share the radiator D, the radiator F, and the radiator C. Figure 21 The radiator D and the radiator F are exemplified as belonging to the antenna 1. In actual cases, the radiator D and the radiator F can also be exemplified as belonging to the antenna 2, which is not limited in the embodiments of the present application.

[0389] Figure 21 A comparison diagram of the frequency adjustment rules in the wifi single-state scenario and the low-performance scenario 21 is shown.

[0390] Figure 6 An effect comparison curve diagram of the S parameters of the antenna 1 and the antenna 2 in the wifi single-state scenario and the low-performance scenario 11 obtained by the electronic device when performing the simulation effect test is shown. The abscissa represents the frequency, in Ghz, and the ordinate represents the amplitude value of S11, in dB.

[0391] Figure 21 The four curves in (1) include a curve “antenna 2-wifi single-state”, abbreviated as curve Q11, a curve “antenna 1-wifi single-state”, abbreviated as curve Q12, a curve “antenna 2-scenario 21”, abbreviated as curve Q13, and a curve “antenna 1-scenario 21”, abbreviated as curve Q14. In the curve Q13, the frequency high-low relationship of each radiator in the antenna 2 and the corresponding frequency of each radiator in the low-performance scenario 21 are shown. In the curve Q14, the frequency high-low relationship of each radiator in the antenna 1 and the corresponding frequency of each radiator in the low-performance scenario 21 are shown. The related description about the curve Q11 and the curve Q12 is the same as the foregoing description about the curve Q11 and the curve Q12 in (1), which will not be described herein again. Figure 21 The related description about the curve Q11 and the curve Q12 is the same as the foregoing description about the curve Q11 and the curve Q12 in (1), which will not be described herein again.

[0392] It should be understood herein that, Figure 21 ​​The curve Q13 and the curve Q14 shown in FIG. 13 are a case in the low performance scenario 21. In this case, the performance of the antenna 2 is the best when the working frequency of the antenna 1 is in the middle-high frequency B3 band (MHBB3 for short) compared with when the working frequency of the antenna 1 is in other frequency bands.

[0393] Figure 21 The letters A-F in FIG. 13 respectively represent the radiators A-F, and the working frequencies of the radiators A-F are respectively represented by the curves A-F in FIG. 13. Figure 19A It can be known that, in the low performance scenario 21, the radiators involved in the frequency from low to high are in turn the radiator E (about 1.7 GHz), the radiator D and the radiator F (about 2.1 GHz), the radiator C (about 2.2 GHz), the radiator A (about 2.4 GHz), and the radiator B and the radiator H (about 2.8 GHz). It can be understood that the aforementioned frequency tuning rule 12a is an example of the frequency tuning rule 12a. Figure 21 The frequency high-low relationship of the radiators shown in the curve Q13 and the curve Q14 can make the current direction of each radiator in the antenna 1 and the antenna 2 be the current direction in the aforementioned low performance scenario 21. The current direction in the low performance scenario 21 can be referred to the description of the current direction in the low performance scenario 21 in the foregoing. Figure 19A

[0394] Compared with the working frequencies of the radiators determined by the preset frequency tuning rule 21a, it can be known that, compared with the low performance scenario 21, the working frequency of at least one radiator is changed in the wifi single-state scenario. For example, the following changes are included but not limited to.

[0395] The radiator frequency change 21: the working frequencies of the radiator E, the radiator D and the radiator F are changed from being higher than the working frequency of the radiator A (the main radiator) to being lower than the working frequency of the radiator A. The change is shown at the white circle ① in FIG. 13. Figure 20

[0396] The radiator frequency change 21 can make the current direction of the radiator E, the radiator D and the radiator F be changed from being opposite to the current direction of the radiator A to being the same as the current direction of the radiator A. The related description of the current direction change of the radiator E, the radiator D and the radiator F can be referred to the related description of the white circle ① in the foregoing. Figure 21

[0397] It should be understood here that, Figure 22 and Figure 22 The working frequencies of the radiators shown in FIG. 13 are for example, and other values can be used in actual cases. For example, the working frequency of the same radiator is 1 GHz higher or lower than the working frequency. This should not be considered as a limitation to the embodiments of the present application.

[0398] ​​​The following describes the process of adjusting the frequency of each radiator in the wifi single-state scenario, in combination with the preset frequency adjustment rule 22a, through at least one frequency control circuit to make the expected current direction of each radiator conform to the target current direction 21. Meanwhile, the adjustment process is compared with the low-performance scenario.

[0399] Figure 21 The frequency control circuit setting diagram involved in the wifi single-state scenario and the low-performance scenario 21 is shown.

[0400] The following describes how to adjust the frequency of each radiator shown in Figure 22 Figure 22

[0401] In the first antenna structure, the radiator B and the radiator H are not connected to the frequency control circuit, and the radiator H can be regarded as a parasitic radiator with the radiator B as the main one. The working frequencies of the radiator B and the radiator H can be equal and fixed in a frequency band. The frequency band is about 2.6Ghz-2.8Ghz. For example, the working frequency can be 2.8Ghz, which is not limited in the embodiments of the present application.

[0402] The frequency control circuit is connected to the radiator C, the radiator E, the radiator D and the radiator F, and the setting of the frequency control circuit involved herein is also the frequency adjustment of the radiator C, the radiator E, the radiator D and the radiator F.

[0403] As shown in (1) of Figure 22 In the wifi single-state scenario, the frequency control circuit setting is shown in (1). For the radiator C, the electronic device closes (ON) the switch unit w1 in the frequency control circuit 500c and opens (OFF) w2, so that the frequency adjustment branch 521 is turned on. In this way, the radiator C is equivalent to connecting a capacitor of about 0.3p, and the frequency is adjusted to about 2.1Ghz. For the radiator E, the electronic device closes (ON) the switch unit w4 in the frequency control circuit 500e and opens (OFF) w3, so that the frequency adjustment branch 524 is turned on. In this way, the radiator E is equivalent to connecting an inductor of about 3n, and the frequency is adjusted to about 2.9Ghz. For the radiator D, the electronic device closes (ON) the switch unit w5 in the frequency control circuit 500d and opens (OFF) w6, so that the frequency adjustment branch 525 is turned on. In this way, the radiator D is equivalent to connecting an inductor of about 20n, and the frequency is adjusted to about 2.6Ghz. For the radiator F, the electronic device closes (ON) the switch unit w8 in the frequency control circuit 500f and opens (OFF) w7, so that the frequency adjustment branch 528 is turned on. In this way, the radiator F is equivalent to connecting an inductor of about 0.6n, and the frequency is adjusted to about 3.4Ghz.

[0404] As shown in (2) of Figure 23 ​​As shown in FIG. 2, the setting for the frequency control circuit in the low performance scenario 12. For radiator C, the frequency control circuit 500c connected to it controls in the same way as the aforementioned Figure 23

[0405] The beneficial effects of the wifi single mode scenario compared with the low performance scenario 21 are described as follows.

[0406] Figure 23 The comparison chart of the radiation efficiency and system efficiency of the antenna 2 in the wifi single mode scenario and the low performance scenario 21 obtained by the electronic device when performing the simulation effect test.

[0407] As shown in FIG. 8, the horizontal axis represents the frequency in Ghz, and the vertical axis represents the efficiency (radiation efficiency or system efficiency) in dB. Figure 23

[0408] Figure 27 In the low performance scenario 21, the working frequency of the antenna 2 is 2.4Ghz, and the radiation efficiency of the antenna 2 in the wifi single mode scenario is about -4.6dB, and the radiation efficiency of the antenna 2 in the low performance scenario 21 is about -5.6dB. Therefore, compared with the low performance scenario 21, the radiation efficiency of the antenna 2 in the wifi single mode scenario is improved by about 1dB.

[0409] Figure 24 ​​In the middle, the curve "system efficiency-wifi single mode" and the curve "system efficiency-scenario 21" respectively represent the system efficiency of the antenna 2 when working in the wifi single mode scenario and the low performance scenario. At this time, the working frequency of the antenna 2 is 2.4GHz, and the system efficiency of the antenna 2 in the wifi single mode scenario is about -4.4dB, and the system efficiency of the antenna 2 in the low performance scenario 21 is about -5.4dB. Therefore, compared with the low performance scenario 21, the system efficiency of the antenna 2 in the wifi single mode is also improved by 1dB.

[0410] Low performance scenario 22:

[0411] When the working frequencies of the antennas 1-3 are adjusted according to the preset frequency adjustment rule 12b, the electronic device is in the wifi and B41 coexistence state, and the antenna 1 is responsible for providing the cellular network communication (in the B41 frequency band) mode, and the antenna 2 is responsible for providing the 2.4G wifi communication mode. At this time, although the performance of the antenna 1 is good, the performance of the antenna 2 working in the wifi 2.4G frequency band is low, which leads to poor communication ability of the electronic device when communicating with other electronic devices based on the 2.4G wifi communication mode in the wifi and B41 coexistence state. Wherein, the related explanation of the wifi and B41 coexistence state can be referred to the foregoing content, which will not be described here.

[0412] Wherein, the reason why the performance of the antenna 2 working in the wifi 2.4G frequency band is low in the low performance scenario 22 can be referred to the description of the antenna 2 working in the wifi 2.4G frequency band in the low performance scenario 21, which will not be described here. Figure 24

[0413] The following describes the improvement method for the low performance scenario 22 and related content.

[0414] For the low performance scenario 22, based on the second antenna structure in the present application, when the electronic device is in the wifi and B41 coexistence state, the working frequencies of the antennas 2 and the radiators coupled thereto in the antenna 1 can be re-adjusted according to the preset frequency adjustment rule 22b, so that the current directions of the radiators in the antenna 1 and the antenna 2 are adjusted to the target current direction (denoted as target current direction 22). The target current direction 22 is the current direction that meets the wifi and B41 coexistence state when the second antenna structure is adopted. The electronic device can change the working frequency of part of the radiators responsible for providing the cellular network communication (in the B41 frequency band) mode so that the resonance generated thereby is used to provide the 2.4G wifi communication mode, or the electronic device can change the working frequency of part of the radiators responsible for providing the cellular network communication (in the B41 frequency band) mode so that the resonance generated thereby does not adversely affect the 2.4G wifi communication mode. The reason for generating the target current direction 22 can be referred to the foregoing related description of generating the target current direction, which will not be described here.

[0415] ​Firstly, based on the aforementioned reasons for generating the target current direction, the target current direction 22 proposed for the wifi and B41 coexistence scenario is described in detail.

[0416] Figure 24 Fig. 1 shows a schematic diagram of a target current direction 22.

[0417] Reference Figure 24 In Fig. 1, the expected current direction (target current direction 22) of each radiator in the antenna 1 and the antenna 2 when the operating frequency of the antenna 2 and the antenna 1 is readjusted according to the preset frequency adjustment rule 22b is shown.

[0418] The antenna 1 is mainly responsible for providing the electronic device with a cellular network communication (in the B41 frequency band) communication mode, and at this time the radiator E is the main radiator. The parasitic radiators of the radiator E mainly include the radiator C. The radiator C is a first type of radiator, and the expected current direction generated thereby is in the same direction as the radiator E.

[0419] The antenna 2 is mainly responsible for providing the electronic device with a 2.4G wifi communication mode, and at this time the radiator A is the main radiator. The parasitic radiators of the radiator A mainly include the radiator B, the radiator H, the radiator D, and the radiator F. The radiator B, the radiator H, the radiator D, and the radiator F are first type of radiators, and the expected current direction generated thereby is in the same direction as the radiator A.

[0420] In some possible cases, the expected current direction of the radiator E (main radiator) and the radiator A (main radiator) is opposite.

[0421] It should be understood here that the parasitic radiators of the radiator E can include the radiator B, the radiator D, etc., in addition to the radiator C, but in the wifi and B41 coexistence scenario, in addition to the radiator C, other radiators have less influence on the radiator E and greater influence on the radiator A, which will not be described here and will be described below when the radiator A is described. Similarly, in the wifi and B41 coexistence scenario, the parasitic radiators of the radiator A can include the radiator E, in addition to the radiator B, the radiator H, the radiator D, and the radiator F, but have less influence on the radiator A, which will not be described here.

[0422] It should be understood here that in the wifi and B41 coexistence scenario, the frequency of the radiator D is higher than the frequency of the radiator E. When the frequency of the radiator E belongs to the B41 frequency band, the radiator D can also act as a parasitic radiator of the radiator E, and the radiator D can generate a current direction (not shown in Fig. 1) in the same direction as the radiator E to have a positive parasitic radiator effect on the radiator E. Figure 24

[0423] ​It should also be understood that the current directions of the radiator A (the main radiator) and the radiator E (the main radiator) are taken as examples in the directions shown in (1) and (2). Figure 24 In actual cases, the current directions of the radiator A and the radiator E can also be opposite to the directions shown in (1) and (2). The present application does not limit this. Figure 24 In actual cases, the current directions of the radiator A and the radiator E can also be opposite to the directions shown in (1) and (2). The present application does not limit this.

[0424] Figure 24 (2) shows the current directions in the low-performance scenario 22.

[0425] The following describes the reasons for the performance improvement of the antenna 2 in the wifi and B41 coexistence state of the electronic device after using the frequency modulation rules involved in the present application in combination with (2) and the aforementioned (1). Figure 24 The following describes the reasons for the performance improvement of the antenna 2 in the wifi and B41 coexistence state of the electronic device after using the frequency modulation rules involved in the present application in combination with (2) and the aforementioned (1). Figure 24 The following describes the reasons for the performance improvement of the antenna 2 in the wifi and B41 coexistence state of the electronic device after using the frequency modulation rules involved in the present application in combination with (2) and the aforementioned (1).

[0426] Referring to (2), in the low-performance scenario 22, the reasons for the low performance of the antenna 2 include but are not limited to the following reasons. Figure 24 Low-performance reason 22-1: The radiator D and the radiator H are parasitic radiators of the radiator A (the main radiator) and are the first type of radiators, but the currents of the radiator D and the radiator H are opposite to the current of the radiator A. When the currents of the radiator D and the radiator H are in the same direction as the current of the radiator A, the resonance generated thereby has an adverse effect on the radiator A, resulting in low performance of the antenna 2.

[0427] In combination with (1) and (2), for this low-performance reason 22-1, there is a first change: the current of the radiator D and the radiator H is changed from being opposite to the current of the radiator A to being in the same direction, which can improve the performance of the antenna 2. The first change for this low-performance reason 22-1 is reflected in the white circle ① in (1).

[0428] Figure 24 Figure 25 (1) and (2) can be known, for this low-performance reason 22-1, there is a first change: the current of the radiator D and the radiator H is changed from being opposite to the current of the radiator A to being in the same direction, which can improve the performance of the antenna 2. The first change for this low-performance reason 22-1 is reflected in the white circle ① in (1). Figure 25

[0429] Figure 24 (1) and (2) can be known, for this low-performance reason 22-1, there is a first change: the current of the radiator D and the radiator H is changed from being opposite to the current of the radiator A to being in the same direction, which can improve the performance of the antenna 2. The first change for this low-performance reason 22-1 is reflected in the white circle ① in (1).

[0430] As shown in (1), it is a current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band in the wifi and B41 coexistence state of the electronic device. Among them, the current directions of each radiator are opposite to the directions shown in (1). Figure 25 As shown in (1), it is a current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band in the wifi and B41 coexistence state of the electronic device. Among them, the current directions of each radiator are opposite to the directions shown in (1). Figure 26 ​​​The current directions of the radiators in the target current direction 22 shown in (1) correspond. At this time, the radiator A is the main radiator, and the parasitic radiators can include the radiator D, the radiator F, and the radiator B and the radiator H, and the current directions of the respective parasitic radiators are all the same as that of the radiator A.

[0431] As shown in (2), the current distribution simulation diagram of the respective radiators mainly responsible for the wifi 2.4G band in the low-performance scenario 22 of the electronic device. At this time, the current directions of the radiator D and the radiator F are the same as that of the radiator A, which will cause the performance of the antenna 2 (including the radiator A) to decrease. Figure 26

[0432] The preset frequency adjustment rule 22b involved in adjusting the target current direction 22 is further described.

[0433] In some possible cases, the preset frequency adjustment rule 22b is used to adjust the frequency high-low relationship of the radiator A (the main radiator) and the parasitic radiators mainly responsible for the radiator A (including the radiator B, the radiator H, the radiator D, and the radiator F). It is also used to adjust the frequency high-low relationship of the radiator E (the main radiator) and the parasitic radiators mainly responsible for the radiator E (including the radiator C).

[0434] The preset frequency adjustment rule 22b can include: for the second antenna structure, when the electronic device is in the wifi and B41 coexistence state, the working frequency (denoted as working frequency A) of the radiator A (the main radiator) belongs to the wifi 2.4G band (denoted as band A), for example, the working frequency A can be 2.4Ghz. The working frequency of the radiator D is greater than and close to the working frequency A. The electric length of the radiator B is greater than the preset length value 1, and the electric length of the radiator H is greater than the preset length value 1, so that the radiator B and the radiator H can be regarded as a parasitic radiator with the radiator B as the main one, and the frequency of the radiator H is regarded as the same as that of the radiator B. The working frequency of the radiator B is greater than and close to the working frequency A.

[0435] In some possible cases, the working frequency of the parasitic radiator (mainly) closer to the radiator A (the main radiator) can be set closer to the working frequency A. Since the distance from the radiator can be the radiator D, the radiator B, the radiator E, and the radiator F from near to far, the frequencies of the respective radiators involved when the frequencies of the respective radiators providing the 2.4G wifi communication mode in the wifi and B41 coexistence state scenario from low to high can be the radiator A, the radiator D, the radiator B, and the radiator H, the radiator F in sequence.

[0436] ​The operating frequency (denoted as operating frequency E) of the radiator E (main radiator) belongs to the B41 frequency band, for example, the operating frequency E can be 2.55 GHz. The operating frequency of the radiator C is greater than the operating frequency E and close to the operating frequency E, so that the expected current generated by the radiator C is in the same direction as the radiator E. Then, in the wifi and B41 coexistence state, the frequencies of the radiators responsible for providing the cellular network (in the B41 frequency band) communication mode from low to high involve the radiators in turn: the radiator E, the radiator C.

[0437] In some possible cases, the coupling between the radiator C and the radiator A (main radiator) is high, but the direction of the expected current generated by the radiator C is opposite to that of the radiator A. The corresponding operating frequency of the radiator C can be adjusted to be higher to avoid adverse effects on the radiator A. For example, the operating frequency of the radiator D is set to be higher than the operating frequencies of the other radiators except the radiator F. The coupling between the radiator F and the radiator E (main radiator) is high, but the direction of the expected current generated by the radiator F is opposite to that of the radiator A. At the same time, the distance between the radiator F and the radiator A is far, so the operating frequency of the radiator F can be set to be the highest to reduce the effects on the two radiators.

[0438] In combination with the above, in some possible cases, in the wifi and B41 coexistence state, the frequencies of the radiators involved from low to high involve the radiators in turn: the radiator A, the radiator E, the radiator D, the radiator B and the radiator H, the radiator C, and the radiator F.

[0439] Figure 26 A schematic diagram of a preset frequency adjustment rule 22b is shown.

[0440] Figure 26 An effect curve diagram of S parameters of the antenna 1 and the antenna 2 in the wifi and B41 coexistence state obtained by the electronic device when performing the simulation effect test.

[0441] Figure 26 The diagram includes two curves: a curve “antenna 2-coexistence state” abbreviated as curve Q41, and a curve “antenna 1-coexistence state” abbreviated as curve Q42. In the curve Q41, the high-low relationship of the frequencies of the radiators in the antenna 2 and the corresponding frequencies of the radiators in the wifi and B41 coexistence state are shown. In the curve Q42, the high-low relationship of the frequencies of the radiators in the antenna 1 and the corresponding frequencies of the radiators in the wifi and B41 coexistence state are shown.

[0442] Figure 26 The letters A-F in the diagram respectively represent the radiator A to the radiator F, and the numbers 1-6 respectively represent the operating frequencies of the radiators A to the radiators F. Figure 26It can be seen that in some possible cases, in the wifi and B41 coexistence state, the radiator frequencies responsible for the wifi 2.4G band from low to high can be in turn: radiator A (about 2.4Ghz), radiator D (about 2.7Ghz), radiator B and radiator H (about 2.8Ghz), and radiator F. Among them, Figure 26 The frequency of the radiator F is not shown in the middle, which can be understood as the frequency of the radiator F being higher in Figure 24 The radiator F and the radiator D can be regarded as a radiator mainly with the radiator D in the middle, and the current direction of the radiator F is the same as that of the radiator D.

[0443] The radiator frequencies responsible for the wifi 2.4G band from low to high can be in turn: radiator E (about 2.55Ghz), and radiator C (about 3.8Ghz).

[0444] The working frequency (not shown) of the radiator C is adjusted to a very high position (greater than 4G), such as 5G, etc. In this way, the current of the radiator C can be made weaker to reduce the adverse effects on the antenna 2 or the antenna 1.

[0445] Figure 26 The frequency relationship of the radiators shown in the middle conforms to the description of the preset frequency adjustment rule 22b described above. The desired current direction of each radiator in the antenna 1 and the antenna 2 can be the target current direction 22. The description of the target current direction 22 can refer to the description of (1) in the middle, which will not be repeated here. Figure 27

[0446] It should be understood here that in the wifi single state scenario, the antenna 1 and the antenna 2 can share the radiator D. Figure 27 The radiator D is exemplified as belonging to the antenna 1. In actual cases, the radiator D can also be exemplified as belonging to the antenna 2, which is not limited by the embodiments of the application.

[0447] Figure 27 A comparison diagram of the frequency adjustment rule in the wifi and B41 coexistence state and the low performance scenario 22 is shown.

[0448] Figure 26 An effect comparison curve diagram of the S parameters of the antenna 1 and the antenna 2 in the wifi and D41 coexistence state and the low performance scenario 22 obtained by the electronic device when performing the simulation effect test.

[0449] Figure 27 ​The figure includes 4 curves: curve "antenna 2-coexistence state" is referred to as curve Q41, curve "antenna 1-coexistence state" is referred to as curve Q42, curve "antenna 2-scenario 22" is referred to as curve Q43, and curve "antenna 1-scenario 22" is referred to as curve Q44. In the curve Q43, the frequency relationship between the radiators in the antenna 2 and the frequencies corresponding to the radiators in the low-performance scenario 22 are shown. In the curve Q44, the frequency relationship between the radiators in the antenna 1 and the frequencies corresponding to the radiators in the low-performance scenario 11 are shown. The descriptions of the curve Q41 and the curve Q42 are the same as the foregoing Figure 27 The descriptions of the curve Q41 and the curve Q42 are the same as the foregoing

[0450] It should be understood that, Figure 27 The curve Q43 and the curve Q44 shown in the figure are a case in the low-performance scenario 22. In this case, in the low-performance scenario 22, the working frequency of the antenna 1 is the B41 frequency band (referred to as MHBB41) of the medium-high frequency.

[0451] Figure 27 The letters A-F in the figure represent the radiators A-F, respectively, and Figure 27 It can be known that, in the low-performance scenario 22, the radiators mainly responsible for the wifi 2.4G frequency band include the radiator A (the main radiator) and the main parasitic radiators of the radiator A, including the radiators B and H. The radiators mainly responsible for the B41 frequency band include the radiator E (the main radiator) and the main parasitic radiators of the radiator E, including the radiators F, C, and D.

[0452] In the low-performance scenario 22, the radiators mainly responsible for the wifi 2.4G frequency band can be in the order of the radiator A (about 2.4Ghz), the radiators B and H (about 2.8Ghz) from low to high.

[0453] The radiators mainly responsible for the wifi 2.4G frequency band can be in the order of the radiator E (about 2.6Ghz) and the radiator F (about 3.1Ghz), the radiator C (about 3.8Ghz), and the radiator D from low to high. Among them, Figure 24 The frequency of the radiator D is not shown in the figure, and it can be understood that the frequency of the radiator D is higher than that of the radiator F. Figure 27 The radiator D and the radiator F can be regarded as radiators mainly with the radiator F in the figure, and the current direction of the radiator D is the same as that of the radiator F.

[0454] The frequency of each radiator shown in the curve Q43 and the curve Q44 is consistent with the description of the preset frequency modulation rule 12b. It can be regarded as an example of the frequency modulation rule 12b. The current direction of each radiator in the antenna 1 and the antenna 2 is the current direction in the low performance scenario 22 described above. For the current direction in the low performance scenario 22, refer to the description of the low performance scenario 22 above, which will not be repeated here. Figure 24 The description of the low performance scenario 22 above can be referred to.

[0455] Compared with the working frequency of each radiator determined by the preset frequency modulation rule 21b, at least one radiator in the wifi and B41 coexistence scenario changes compared with the low performance scenario 22. For example, but not limited to the following changes.

[0456] Radiation frequency change 51: the working frequency of the radiator D is changed from a higher frequency to a frequency of 2.7, and the frequency of the radiator F is changed from 3.1 GHz to a higher frequency. The change is shown at the white circle ① in the low performance scenario 22. Figure 26 The radiation frequency change 51 can change the radiator D and the radiator F from the radiator F to the radiator D. When the radiator F is the main radiator, the current generated by the radiator F and the radiator D is in the same direction as the radiator E (the main radiator), and thus is opposite to the radiator A. When the radiator D is the main radiator, the current generated by the radiator D and the radiator F is in the same direction as the radiator A (the main radiator). For the description of the change of the current direction of the radiator D and the radiator F, refer to the description of the white circle ① in the low performance scenario 22 above, which will not be repeated here. Figure 27

[0457] It should be understood that Figure 28 and Figure 28 The working frequency of each radiator shown in the low performance scenario 22 is an example, and other values can be used in actual situations. For example, the working frequency of the same radiator is 1 GHz higher or lower than the working frequency. It should not be construed as a limitation on the embodiments of the present application.

[0458] The following describes the process of adjusting the frequency of each radiator in the wifi and B41 coexistence scenario by at least one frequency control circuit to make the expected current direction of each radiator consistent with the target current direction 22 in combination with the preset frequency modulation rule 22b. At the same time, the difference between the adjustment process and the low performance scenario is compared.

[0459] Figure 27 The frequency control circuit setting diagram involved in the wifi and B41 coexistence scenario and the low performance scenario 22 is shown.

[0460] The following describes how to adjust the frequency of each radiator shown in the low performance scenario 22 based on the preset frequency modulation rule 22b. Figure 28 Figure 28 The frequency of each radiator shown in the low performance scenario 22 is an example, and other values can be used in actual situations. For example, the working frequency of the same radiator is 1 GHz higher or lower than the working frequency. It should not be construed as a limitation on the embodiments of the present application.​​

[0461] The frequency control circuit is connected in radiators C, E, D, and F. The setting of the frequency control circuit described here is also a description of the frequency adjustment of radiators C, E, D, and F.

[0462] like Figure 28 As shown in Figure (1), the frequency control circuit is configured in a scenario where Wi-Fi and B41 coexist. For radiator C, the electronic device closes (ON) the switch unit w2 and opens (OFF) the switch unit w1 in the frequency control circuit 500c, thus turning on the frequency modulation branch 521. In this way, radiator C is equivalent to being connected to an inductor of approximately 5n, and the frequency is adjusted to approximately 3.8 GHz. For radiator E, the electronic device closes (ON) the switch unit w4 and opens (OFF) the switch unit w3 in the frequency control circuit 500e, thus turning on the frequency modulation branch 524. In this way, radiator E is equivalent to being connected to an inductor of approximately 3n, and the frequency is adjusted to approximately 2.55 GHz. For radiator D, the electronic device closes (ON) the switch unit w5 and opens (OFF) the switch unit w6 in the frequency control circuit 500d, thus turning on the frequency modulation branch 525. In this way, radiator D is equivalent to being connected to an inductor of approximately 20n, and the frequency is adjusted to approximately 2.7 GHz. For the radiator F, the electronic device closes (ON) the switching unit w8 and opens (OFF) w7 in the frequency control circuit 500f, thus turning on the frequency modulation branch 528. In this way, the radiator F is effectively connected to an inductor of approximately 0.6n, and the frequency is adjusted to a higher frequency.

[0463] like Figure 29 As shown in Figure (2), this is the frequency control circuit setup in low-performance scenario 22. The frequencies of radiators D and F remain unchanged compared to those in the Wi-Fi and B41 coexistence scenario, and the frequency control circuit 500c connected to them operates in the same manner as described above. Figure 29 The same applies to (1), so it will not be repeated here. For radiator D, the electronic device closes (ON) the switch unit w6 and opens (OFF) the switch unit w5 in the frequency control circuit 500d, making the frequency modulation branch 526 conduct. In this way, radiator D is equivalent to being connected to an inductor of about 0.6n, and the frequency is adjusted to a higher frequency. For radiator F, the electronic device closes (ON) the switch unit w7 and opens (OFF) the switch unit w8 in the frequency control circuit 500f, making the frequency modulation branch 527 conduct. In this way, radiator F is equivalent to being connected to an inductor of about 5n, and the frequency is adjusted to about 3.1 GHz.

[0464] The following describes the beneficial effects of the Wi-Fi and B41 coexistence scenario compared to the low-performance scenario 22.

[0465] Figure 29The diagram shows the efficiency comparison of antenna 2 and antenna 1 under the scenarios of WiFi coexistence with B41 and low-performance scenario 22, obtained during the simulation effect test of electronic devices.

[0466] like Figure 29 As shown, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiative efficiency or system efficiency) in dB.

[0467] Figure 30 In the diagram, curves "Radiation Efficiency - Coexistence State" and "Radiation Efficiency - Scenario 22" represent the radiation efficiency of antenna 2 in the coexistence state scenario and the low-performance scenario, respectively. At this point, antenna 2 operates at a frequency of 2.4 GHz. In the coexistence state scenario, the radiation efficiency of antenna 2 is approximately -6.6 dB, and in low-performance scenario 22, it is approximately -7.6 dB. Therefore, compared to low-performance scenario 22, the radiation efficiency of antenna 2 in the coexistence state is improved by approximately 1 dB.

[0468] Figure 30 In the diagram, curves "System Efficiency - Coexistence State" and "System Efficiency - Scenario 22" represent the system efficiency of antenna 2 in the coexistence state scenario and the low-performance scenario, respectively. At this point, antenna 2 operates at a frequency of 2.4 GHz. In the coexistence state scenario, the system efficiency of antenna 2 is approximately -7.9 dB, and in low-performance scenario 22, the system efficiency is approximately -6.9 dB. Therefore, compared to low-performance scenario 22, the system efficiency of antenna 2 in the coexistence state is also improved by 1 dB.

[0469] Figure 30 This is a comparison chart of the efficiency of antenna 1 under the scenarios of WiFi coexistence with B41 and low-performance scenario 11, obtained during the simulation effect test of electronic devices.

[0470] like Figure 30 As shown in Figure (1), the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The curves “Radiation Efficiency - Coexistence State” and “Radiation Efficiency - Scenario 22” represent the radiation efficiency of antenna 1 in the coexistence state scenario and the low-performance scenario 22, respectively. The curves “System Efficiency - Coexistence State” and “System Efficiency - Scenario 22” represent the system efficiency of antenna 1 in the coexistence state scenario and the low-performance scenario, respectively. At this time, the operating frequency of antenna 1 is 2.55 GHz. The radiation efficiency of antenna 1 decreased from -3.6 dB in the low-performance scenario to -5.4 dB in the coexistence state of Wi-Fi and B41, and the system efficiency of antenna 1 decreased from -3.9 dB in the low-performance scenario to -5.8 dB in the coexistence state of Wi-Fi and B41. Therefore, compared with the low-performance scenario 22, the radiation efficiency of antenna 1 decreased by about 1.6 dB in the coexistence state of Wi-Fi and B41.

[0471] As Figure 29 indicated in (2), the abscissa represents frequency, unit: Ghz, and the ordinate represents efficiency (transmission efficiency), unit: dB. As Figure 30 indicated in (2), the curve “transmission efficiency-coexistence state” and the curve “transmission efficiency-scenario 22” respectively represent the transmission efficiency of the antenna 1 when working in the coexistence state scenario and the low performance scenario 22. The transmission efficiency indicated by the point K21 is smaller than the transmission efficiency indicated by the point K22, so the transmission efficiency of the antenna 1 in the coexistence state is relatively slightly worse than in the low performance scenario 22.

[0472] In combination with Figure 32-33 and Figure 31 It can be seen that although the performance of the antenna 1 is reduced, the radiation efficiency and system efficiency of the antenna 1 at the position of-6dB or above, and the transmission efficiency is below-6dB, which indicates that although the performance of the antenna 1 is reduced, it is still good. And the performance of the antenna 2 is improved. It can be understood that the performance of the antenna 2 is improved while balancing the performance of the antenna 1.

[0473] It should be understood that for the second antenna structure, when the electronic device is in other states, the working frequencies of the antenna 1 and the antenna 2 can be adjusted according to the preset frequency adjustment rule 12, so that the electronic device can communicate with other electronic devices. The other state can be other states except the wifi single state and the wifi and B41 coexistence state. The embodiments of the present application will not be repeated here.

[0474] It should be understood that for the second antenna structure, when the electronic device is in other states, the working frequencies of the antenna 1 and the antenna 2 can be adjusted according to the preset frequency adjustment rule 11, so that the electronic device can communicate with other electronic devices. The other state can be other states except the wifi single state and the wifi and B41 coexistence state. The embodiments of the present application will not be repeated here.

[0475] It should also be understood that in the foregoing related content, the communication mode in which 2.4G wifi communication is enabled and cellular network communication is not enabled is an example of the aforementioned communication mode A, and the communication mode in which 2.4G wifi communication is enabled and cellular network communication is in the B41 frequency band is another example of the aforementioned communication mode A. The antenna 2 (responsible for the 2.4G wifi frequency band) is an example of the antenna A. In actual situations, the antenna A can also be other antennas responsible for other frequency bands, and the embodiments of the present application do not limit this.

[0476] The third antenna structure will be described in detail below.

[0477] Based on the third antenna structure, the electronic device can perform frequency tuning on the radiators in the antenna 1 and the antenna 2 that are mainly responsible for the wifi 2.4G frequency band in a wifi single state according to a preset frequency tuning rule 23a, and use the antenna 1 to assist the antenna 2 to improve performance, so that the electronic device has a better ability to communicate with other electronic devices through a wifi 2.4G communication mode. At the same time, in the case that the electronic device is in a wifi single state, the radiators in the antenna 2 that are mainly responsible for the GPS frequency band are tuned according to the preset frequency tuning rule 23a. Compared with the first antenna structure, more radiators can be used to be responsible for the GPS frequency band in the third antenna structure, so that the electronic device has a better ability to communicate with other electronic devices through a GPS communication mode. The description of the frequency tuning rule 23a and related content can be referred to the description of the frequency tuning rule 23a and related content in the following content, which will not be described here. Figure 31

[0478] Based on the third antenna structure, the electronic device can perform frequency tuning on the radiators in the antenna 1 and the antenna 2 that are mainly responsible for the wifi 2.4G frequency band in a wifi single state according to a preset frequency tuning rule 23a, and use the antenna 1 to assist the antenna 2 to improve performance, so that the electronic device has a better ability to communicate with other electronic devices through a wifi 2.4G communication mode. At the same time, in the case that the electronic device is in a wifi single state, the radiators in the antenna 2 that are mainly responsible for the GPS frequency band are tuned according to the preset frequency tuning rule 23a. Compared with the first antenna structure, more radiators can be used to be responsible for the GPS frequency band in the third antenna structure, so that the electronic device has a better ability to communicate with other electronic devices through a GPS communication mode. The description of the frequency tuning rule 23a and related content can be referred to the description of the frequency tuning rule 23a and related content in the following content, which will not be described here.

[0479] Figure 3 An example diagram of the third antenna structure is shown.

[0480] As shown in Figure 31 , the third antenna structure is similar to the first antenna structure described above. The description of the first antenna structure and related content can be referred to the description of the first antenna structure and related content in the foregoing Figure 3 . For example, Figure 32 , the same reference signs in the foregoing Figure 33 indicate the same parts between the first antenna structure and the third antenna structure. Here, the same parts of the two antenna structures will not be described again, and the different parts of the two antenna structures will be described. The differences between the third antenna structure and the first antenna structure include that the radiator H does not include a ground terminal, the radiator E does not include a feed point but a feed point (such as the feed point 404c) is arranged on the radiator C, and the radiator B is provided with a connection point 406b for connecting the frequency control circuit.

[0481] ​In the third antenna structure, the feeding point 404c of the radiator C is connected to the radio frequency source 4 of the electronic device. The feeding point 404c is connected to the first floor in the first device body 100 through the frequency control circuit 407c. The switch device included in the frequency control circuit 407c can select at least one frequency adjusting branch, thereby adjusting the frequency of the radiator C. The connection point 406e of the radiator E is connected to the first floor in the first device body 100 through the frequency control circuit 407e. The switch device included in the frequency control circuit 407e can select at least one frequency adjusting branch, thereby adjusting the frequency of the radiator E. The connection point 406e of the radiator E is connected to the first floor in the first device body 100 through the frequency control circuit 407e. The connection point 406d of the radiator D is connected to the second floor in the second device body 200 through the frequency control circuit 407d. The switch device included in the frequency control circuit 407d can select at least one frequency adjusting branch, thereby adjusting the frequency of the radiator D. The connection point 406f of the radiator F is connected to the second floor in the second device body 200 through the frequency control circuit 407f. The switch device included in the frequency control circuit 407f can select at least one frequency adjusting branch, thereby adjusting the frequency of the radiator F. The radiator H is not grounded, and its length is not limited, which can be longer or shorter than that of the radiator B.

[0482] In some possible cases, the frequency control circuit 407e connected to the connection point 406e is the same as the frequency control circuit 400c connected to the connection point 106c in the first antenna structure. The frequency control circuit 407c connected to the feeding point 404c is the same as the frequency control circuit 400e connected to the feeding point 104e in the first antenna structure.

[0483] In the third antenna structure, since the radiator C has a feeding point, the radiator C does not belong to the antenna 2, but belongs to the antenna 1. The affiliation of the other radiators with the antenna 1, the antenna 2 and the antenna 3 can refer to the affiliation of the radiators with the antenna 1, the antenna 2 and the antenna 3 in the first antenna structure, which will not be described herein again.

[0484] In the third antenna structure, the operating frequency range of the antenna 1 can include one or all of the medium-high frequency (MHB) frequency range or the N78 frequency range, and the feeding of the antenna 1 is generated at the radiator C. The operating frequency range of the antenna 2 includes the GPS frequency range or the wifi 2.4G frequency range, and the feeding of the antenna 2 is generated at the radiator A. At this time, the antenna 2 can be responsible for providing GPS communication and 2.4G wifi communication for the electronic device, and the feeding of the antenna 2 is generated at the radiator G. The operating frequency range of the antenna 3 includes one or more of the N78 frequency range or the wifi 5G frequency range.

[0485] The communication mode provided by the electronic device based on the operating frequency of each antenna can refer to the description of the foregoing related content, and will not be described here again.

[0486] The following describes the related content involved in the wifi single state scenario based on the third antenna structure described above.

[0487] Compared with the first antenna structure, in the third antenna structure, when the electronic device is in the wifi single state, the frequency of the radiator B can be adjusted to another frequency close to the GPS frequency band by the frequency control circuit connected to the radiator B in addition to the aforementioned frequency higher than that of the radiator A (for example, 2.6 GHz or 2.8 GHz). The aforementioned frequency higher than that of the radiator A can be referred to as frequency 11, and the other frequency close to the GPS frequency band can be referred to as frequency 12.

[0488] In this way, when the electronic device is in the wifi single state, the radiator B can distribute the current at the frequency 11 (in the same direction as the current of the radiator A) to have a positive parasitic radiation effect on the radiator A whose operating frequency belongs to the wifi 2.4G frequency band, and can also distribute the current at the frequency 12 (in the same direction as the current of the radiator A) to have a positive parasitic radiation effect on the radiator A whose operating frequency belongs to the GPS frequency band.

[0489] Based on the third antenna structure in the present application, the electronic device can re-adjust the operating frequencies of the antenna 2 and the antenna 1 coupled thereto according to a preset frequency adjustment rule 23a, so that the current directions of the radiators in the antenna 1 and the antenna 2 are adjusted to a target current direction (denoted as target current direction 31). The target current direction 31 is a current direction that satisfies the wifi single state when the third antenna structure is adopted, and the radiators in the antenna 1 and the antenna 2 can be used to provide the 2.4G wifi communication mode and the GPS communication mode. In some possible cases, the radiators mainly responsible for the wifi 2.4G frequency band include the radiator A, the radiator B, the radiator C, and the radiator D. The radiators mainly responsible for the GPS frequency band include the radiator A and the radiator B.

[0490] In this way, the performance of the antenna 2 can be improved, and thus the communication capability of the electronic device when communicating with other electronic devices in the 2.4G wifi communication mode and the GPS communication mode can be improved.

[0491] Figure 33 A target current direction 31 involved in the wifi single state scenario is shown.

[0492] The target current direction 31 describes the current direction of each radiator primarily responsible for the 2.4GHz Wi-Fi band when radiator A operates at frequencies including the 2.4GHz band. Radiator A is the main radiator, and parasitic radiators include radiators B, C, and D. Based on the foregoing, radiators B and C are first-type radiators, and their desired current direction is the same as that of radiator A. Radiator D is a second-type radiator, and its desired current direction is opposite to that of radiator A.

[0493] In some possible cases, when the operating frequency of radiator A includes the 2.4GHz Wi-Fi band, the parasitic radiators of radiator A may also include other radiators. For example, radiators E, F, and H. Here, for radiators E and F, their frequencies can be adjusted to be higher (higher than the frequency of radiator B) so that the current generated by radiators E and F is weaker (weaker than the current distributed in radiator A). The parasitic effect of other radiators on radiator A is relatively small and will not be discussed further here.

[0494] It should be understood here that the operating frequency of radiator A includes not only the 2.4GHz Wi-Fi band but also the GPS band. The radiators primarily responsible for the GPS band can include radiator A (the main radiator) and radiator B (the parasitic radiator). In this case, the current direction of radiator A and radiator B is the same.

[0495] Figure 32 An exemplary current distribution simulation diagram of each radiator is shown when the electronic device is in a Wi-Fi single-state scenario.

[0496] like Figure 33 As shown in Figure (1), this is an exemplary current distribution simulation diagram of the radiators mainly responsible for the 2.4G frequency band of Wi-Fi when the electronic device is in Wi-Fi single-mode. The current direction of each radiator is... Figure 34 The target current direction 31 shown corresponds to the current direction of each radiator. Radiator D has the opposite current direction to radiator A. Radiators B and C have the same current direction as radiator A (the main radiator). Radiators E and F have the same current direction as radiator A. Furthermore, the currents in radiators E and F are weaker than those in radiator A.

[0497] like Figure 34 As shown in Figure (2), this is an exemplary current distribution simulation diagram of each radiator mainly responsible for the GPS frequency band when the electronic device is in Wi-Fi single-mode. It can be seen that the current direction of radiator B is the same as that of radiator A (main radiator).

[0498] The preset frequency modulation rule 23a involved in adjusting the direction of the target current 31 is described next.

[0499] In some possible cases, the preset frequency adjustment rule 23a is used to adjust the frequency relationship between the radiators mainly responsible for the wifi 2.4G frequency band and the radiators mainly responsible for the GPS frequency band.

[0500] The preset frequency adjustment rule 23a can include: for the third antenna structure, when the electronic device is in the wifi single state, the working frequency of the radiator A (main radiator) includes the frequency 21 belonging to the wifi 2.4G frequency band and the frequency 22 belonging to the GPS frequency band. The working frequency of the radiator B includes the frequency 11 greater than the working frequency 21 and the frequency 12 greater than the working frequency 22. The working frequency of the radiator C is less than the working frequency 21. The working frequency of the radiator D is greater than the working frequency 21.

[0501] Generally speaking, in some possible cases, the frequencies of the parasitic radiators can also be set close to the frequency of the main radiator to better generate positive parasitic radiation effects on the main radiator.

[0502] Figure 34 A schematic diagram of a preset frequency adjustment rule 23a is shown.

[0503] Figure 34 The effect curve diagram of the S parameters of the antenna 1 and the antenna 2 in the wifi single state scenario obtained by the electronic device when performing simulation effect test. The abscissa represents the frequency, unit: Ghz, and the ordinate represents the amplitude value of S11, unit: dB.

[0504] Figure 34 The diagram includes two curves: curve “antenna 2-wifi single state” is abbreviated as curve N11, and curve “antenna 1-wifi single state” is abbreviated as curve N12. In the curve N11, the frequency relationship between the radiators in the antenna 2 and the corresponding frequencies of the radiators in the wifi single state scenario are shown. In the curve N12, the frequency relationship between the radiators in the antenna 1 and the corresponding frequencies of the radiators in the wifi single state scenario are shown.

[0505] Figure 34 The letters A-D in the diagram respectively represent the radiator A to the radiator D. It can be known from the diagram that Figure 32 In the wifi single state scenario, the radiators mainly responsible for the wifi 2.4G frequency band can be in the order from low to high as follows: the radiator C (about 2.0Ghz), the radiator D (about 2.3Ghz), the radiator A (main radiator, about 2.44Ghz), and the radiator B (about 2.7Ghz). Figure 34The frequency of each radiator in the antenna 2 mainly responsible for the wifi 2.4G band can be high or low, which can make the desired current direction of each radiator in the antenna 1 and the antenna 2 be the target current direction 31. This helps to improve the performance of the antenna 2 in the wifi 2.4G band. The description of the target current direction 31 can refer to the foregoing description of the target current direction 31, which will not be described here. Figure 34

[0506] As shown in FIG. 7, the frequency of the radiator D is adjusted to be closer to the radiator A (the main radiator) than the radiator C. The reason is that the radiator D is farther away from the radiator A than the radiator C. If the radiator D is expected to provide a more positive parasitic radiation effect on the radiator A, the frequency of the radiator D needs to be adjusted to be relatively close to the radiator A. Otherwise, the current excited by the radiator D will be weak, and the positive parasitic radiation effect on the radiator A will be small. Figure 34 It is also known that in the wifi single-state scenario, each radiator mainly responsible for the GPS band can be in order from low to high frequency: radiator A (main radiator, about 1.53 GHz), radiator B (about 1.7 GHz). In this way, when the working frequency of the radiator A belongs to the GPS band, the radiator B can generate a current in the same direction as the radiator A. This helps to improve the performance of the antenna 2 in the GPS band.

[0507] It should be understood that, as shown in FIG. 7, the frequency of the radiator D is adjusted to be closer to the radiator A (the main radiator) than the radiator C. The reason is that the radiator D is farther away from the radiator A than the radiator C. If the radiator D is expected to provide a more positive parasitic radiation effect on the radiator A, the frequency of the radiator D needs to be adjusted to be relatively close to the radiator A. Otherwise, the current excited by the radiator D will be weak, and the positive parasitic radiation effect on the radiator A will be small. Figure 8 Figure 8 The frequency of each radiator shown in FIG. 7 is described as follows.

[0508] The radiator A can generate two working frequencies by matching, which are the aforementioned frequency 21 (belonging to the wifi 2.4G band) and the frequency 22 (belonging to the GPS band). The radiator B is connected to the frequency control circuit 407b (for example, an LC series circuit) or other forms of frequency selection circuit. The radiator B generates two different frequencies by closing the switch unit of the frequency control circuit 407b or directly connecting to the ground, which are the equivalent capacitance for the GPS band and the equivalent large capacitance or small inductance for the wifi 2.4G band, thereby generating two different frequencies, including the frequency 11 (about 2.7 GHz) and the frequency 12 (about 1.7 GHz). The radiator C adjusts the frequency of the radiator C to about 2.0 GHz by switching the switch unit of the frequency control circuit 407c. The radiator D adjusts the frequency of the radiator D to about 2.3 GHz by switching the switch unit of the frequency control circuit 407d. The radiator E and the radiator F are adjusted to a higher frequency by switching to the small inductance connected switch through the frequency control circuit 407e and the frequency control circuit 407f, respectively.

[0509] In some possible cases, for the radiator C and the foregoing Figure 35 ​​The method of frequency adjustment for radiator E shown in (1) is the same, and radiator D is the same as described above. Figure 35 The method of frequency adjustment for radiator D shown in (1) is the same. Please refer to the description of the relevant content above, which will not be repeated here.

[0510] The following describes the radiation efficiency of antenna 2 and the system efficiency in a Wi-Fi single-mode scenario.

[0511] Figure 9 This is a comparison chart of the radiation efficiency of antenna 2 and the system efficiency in a Wi-Fi single-state scenario obtained during simulation effect testing of electronic devices.

[0512] like Figure 9 As shown, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiative efficiency or system efficiency) in dB. The closer the radiative efficiency and system efficiency are to 0 dB, the better the antenna's radiative efficiency and system efficiency, respectively. This indicates better antenna performance. The curves "Radiative Efficiency - WiFi Single-State" and "System Efficiency - WiFi Single-State" represent the radiative efficiency and system efficiency of antenna 2 operating in a WiFi single-state scenario, respectively.

[0513] In the third antenna structure, when antenna 2 operates at a frequency of 1.53 GHz (GPS band), the radiation efficiency is -2.9 dB, and the system efficiency is -3.25 dB. (Refer to the aforementioned...) Figure 36 As shown, in the first antenna structure, when the operating frequency of antenna 2 is 1.53 GHz, both the radiation efficiency and system efficiency are below -4 dB. Therefore, compared to the aforementioned frequency modulation according to preset frequency modulation rule 21a for the first antenna structure, frequency modulation according to preset frequency modulation rule 23a can improve the performance of antenna 2 in the GPS band in a Wi-Fi single-state scenario.

[0514] In the third antenna structure, when antenna 2 operates at a frequency of 2.44 GHz (Wi-Fi band), its radiation efficiency is -2.17 dB, and its system efficiency is -2.67 dB. (Refer to the aforementioned...) Figure 36 As shown, in the first antenna structure, when the operating frequency of antenna 2 is 2.44 GHz (which can be approximately equal to 2.4 GHz), the radiation efficiency is -2.8 dB and the system efficiency is -3.3 dB. Therefore, compared to the performance of the first antenna structure in low-performance scenario 11, frequency modulation according to the preset frequency modulation rule 23a can still improve the performance of antenna 2 in the Wi-Fi 2.4 GHz band in the Wi-Fi single-state scenario.

[0515] The following describes the relevant content in the scenario of coexistence of Wi-Fi and B41, based on the third antenna structure mentioned above.

[0516] Based on the third antenna structure in the present application, when the electronic device is in the wifi and B41 coexistence state, the electronic device can adjust the operating frequency of the antenna 2 and the antenna 1 coupled thereto according to the preset frequency adjustment rule 23b, so that the current direction of each radiator in the antenna 1 and the antenna 2 is adjusted to the target current direction (denoted as target current direction 32). The target current direction 32 is the current direction that meets the wifi and B41 coexistence state when the third antenna structure is adopted, and each radiator in the antenna 1 and the antenna 2 can be reasonably used to provide 2.4G wifi communication mode and cellular network communication (in B41 frequency band) mode.

[0517] ​ A target current direction 32 involved in the wifi and B41 coexistence state scenario is shown.

[0518] As shown in ​ , compared with the first antenna structure, in the third antenna structure, when the electronic device is in the wifi and B41 coexistence state, the radiator C is the main radiator for the electronic device to provide cellular network communication (in B41 frequency band) mode. In addition to the radiator C, the radiator mainly responsible for the B41 frequency band can also include the radiator E and the radiator F. At this time, the electronic device can adjust the operating frequency of the radiator C to the B41 frequency band, for example, to 2.55Ghz. And the frequency of the radiator E and the radiator F is adjusted to be higher than that of the radiator C, so that the radiator E and the radiator F as parasitic radiators can excite the current in the same direction as the radiator A.

[0519] As shown in Figure 36 , in the third antenna structure, when the electronic device is in the wifi and B41 coexistence state, the radiator A is the main radiator for the electronic device to provide 2.4G wifi communication mode. In addition to the radiator A, the radiator mainly responsible for the wifi 2.4G frequency band can also include the radiator H, the radiator B and the radiator D. At this time, the operating frequency of the radiator A can be adjusted to the wifi 2.4G frequency band, for example, to 2.4Ghz. The operating frequency of the radiator D is adjusted to be lower than that of the radiator A, so that the radiator D as a parasitic radiator excites the current in the opposite direction of the radiator A. And the frequency of the radiator B is adjusted to be higher than that of the radiator A, so that the radiator B as a parasitic radiator excites the current in the same direction as the radiator A. The radiator H and the radiator B can be regarded as a parasitic radiator with the radiator B as the main one, and the frequencies of the radiator H and the radiator B are the same and the directions of the currents excited thereby are also the same.

[0520] The frequency of the radiator D can be adjusted by the frequency control circuit 407d connected to the radiator D, which is equivalent to a large capacitor for the wifi 2.4G frequency band, equivalent to a short circuit for the B41 frequency band, and has no effect on the B41 frequency band. Thus, the radiator D can assist the radiator A to provide the 2.4G wifi communication mode, but will not affect the radiator C to provide the cellular network communication (in the B41 frequency band) mode.

[0521] It should also be understood that in some possible cases, when the radiator A generates resonance on the wifi 2.4G frequency band, the radiator G and the radiator A can be regarded as a parasitic radiator with the radiator A as the main one, and the radiator G can also excite a current in the same direction as the radiator A. At this time, the resonance generated by the radiator G has a positive parasitic radiation effect on the radiator A, which can improve the performance of the antenna 2.

[0522] In some possible cases, in the third antenna structure, when the electronic device is in the wifi and B41 coexistence state, the frequency adjustment mode of the radiators mainly responsible for the wifi 2.4G frequency band (the radiator A, the radiator H, the radiator B, and the radiator D) can be the same as that in the first antenna structure described above, which will not be described here.

[0523] The frequency adjustment of the radiators mainly responsible for the B41 frequency band (the radiator C, the radiator E, and the radiator F) in the third antenna structure will be described in detail below.

[0524] Figure 37A and Figure 37B An example current distribution simulation diagram of each radiator when the electronic device is in the wifi and B41 coexistence state is shown.

[0525] As Figure 37A (1) shows an example current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in the wifi and B41 coexistence state. The current direction of each radiator corresponds to the target current direction 32 of each radiator shown in Figure 36 (1). At this time, the current direction of the radiator D is opposite to that of the radiator A. The current direction of the radiator B is the same as that of the radiator A.

[0526] As Figure 37A (2) shows a current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in the low performance scenario 12. At this time, the current directions of the radiator D and the radiator F are the same as that of the radiator A, which will cause the performance of the antenna 2 (including the radiator A) to decrease.

[0527] As Figure 37BAs shown in Figure (1), this is an exemplary current distribution simulation diagram of each radiator mainly responsible for the B41 frequency band when the electronic device is in a scenario where Wi-Fi and B41 coexist. The current direction of each radiator is... Figure 36 The current directions of each radiator in the target current direction 32 shown correspond to the current directions of the radiators. At this time, radiator C (the main radiator) mainly uses radiators E and F as parasitic radiators, and the current directions of radiators E and F are the same as the current direction of radiator C.

[0528] like Figure 37B As shown in Figure (2), this is a simulation diagram of the current distribution of each radiator mainly responsible for the B41 frequency band in low-performance scenario 12 of the electronic device. At this time, radiator C (main radiator) mainly uses radiator E and radiator D as parasitic radiators.

[0529] Figure 38 A schematic diagram of the frequencies of the radiators primarily responsible for the B41 band is shown.

[0530] Figure 38 This is a graph showing the S-parameters of antenna 1 in a scenario where Wi-Fi and B41 coexist, obtained during simulation testing of the electronic device. (Example:) Figure 38 The horizontal axis represents the frequency in GHz, and the vertical axis represents the amplitude value of S11 in dB.

[0531] Figure 38 The letters C, E, and F in the diagram represent radiator C, radiator E, and radiator F, respectively. Figure 38 It can be seen that, under certain possible circumstances, in scenarios where Wi-Fi and B41 coexist, among the radiators primarily responsible for the B41 band, radiator C (the main radiator) can have its frequency set to 2.55 GHz, which belongs to the B41 band. Radiators E have frequencies of 2.9 GHz and 3.4 GHz, both higher than the frequency of radiator C. This causes the currents distributed in radiators E and F to be in the same direction as those in radiator C.

[0532] like Figure 38 As shown, the reason why the frequency of radiation F is adjusted closer to that of radiator C compared to radiator E is that radiator F is farther from radiator C than radiator E. If we want radiator F to provide a more positive parasitic radiation effect on radiator C, the frequency of radiation F needs to be adjusted relatively close to that of radiator C. Otherwise, the current excited by radiator F will be weaker, and the positive parasitic radiation effect on radiator C will be smaller.

[0533] Figure 39 This is a comparison chart of the efficiency of electronic devices under simulation effect testing in the scenarios of coexistence of Wi-Fi and B41 and low-performance scenario 12.

[0534] likeFigure 39 In the middle (1), as shown in the figure, the efficiency of the antenna 2 in the wifi and B41 coexistence state scenario and the low performance scenario 12 obtained during the simulation effect test is compared. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 12" respectively represent the radiation efficiency of the antenna 2 when working in the wifi and B41 coexistence state scenario and the low performance scenario 12 when the working frequency of the antenna 2 is 2.4Ghz (belongs to the wifi 2.4G frequency band). At this time, in the wifi and B41 coexistence state scenario, the radiation efficiency of the antenna 2 is about -2.7dB, and in the low performance scenario 12, the radiation efficiency of the antenna 2 is about -3.5dB. Therefore, compared with the low performance scenario 12, the radiation efficiency of the antenna 2 in the coexistence state is improved by about 0.8dB.

[0535] Figure 39 In the middle (1), the curve "system efficiency-coexistence state" and the curve "system efficiency-scenario 12" respectively represent the system efficiency of the antenna 2 when working in the wifi and B41 coexistence state scenario and the low performance scenario 12. It can be seen that compared with the low performance scenario 12, the system efficiency in the wifi and B41 coexistence state scenario is improved.

[0536] As Figure 39 In the middle (2), as shown in the figure, the efficiency of the antenna 1 in the wifi and B41 coexistence state scenario and the low performance scenario 12 obtained during the simulation effect test is compared. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 12" respectively represent the radiation efficiency of the antenna 1 when working in the wifi and B41 coexistence state scenario and the low performance scenario 12 when the working frequency of the antenna 1 is 2.55Ghz (belongs to the B41 frequency band). At this time, in the wifi and B41 coexistence state scenario, the radiation efficiency of the antenna 1 is about -2.9dB, and in the low performance scenario 12, the radiation efficiency of the antenna 1 is about -2.2dB. Therefore, compared with the low performance scenario 12, the radiation efficiency of the antenna 1 in the coexistence state is reduced by about 0.7dB, but still close to 0dB, indicating that the radiation efficiency of the antenna 2 at this time is still good.

[0537] Figure 39 In the middle (2), the curve "system efficiency-coexistence state" and the curve "system efficiency-scenario 12" respectively represent the system efficiency of the antenna 1 when working in the wifi and B41 coexistence state scenario and the low performance scenario 12. It can be seen that compared with the low performance scenario 12, the system efficiency in the wifi and B41 coexistence state scenario decreases, but is still close to 0dB, indicating that the system efficiency of the antenna 1 at this time is still good.

[0538] It should be understood that, based on the fixed structure involved in the present application, other antenna structures can be obtained in addition to the three antenna structures involved in the foregoing. However, the frequency adjustment rules involved in the wifi single state and the wifi and B41 coexistence state can be similar or the same, which can be directly or deduced based on the foregoing, and the embodiments of the present application will not be described here. The frequency control circuit shown in each antenna structure is exemplary, and the frequency control circuit can be adjusted in actual application, which should not constitute a limitation on the embodiments of the present application.

[0539] It should also be understood that, in addition to the communication mode A involved in the wifi single state and the wifi and B41 coexistence state, other communication modes can also be included. For example, here the 2.4G wifi communication mode is not turned on, but the cellular network (in the MHB frequency band) communication mode is turned on.

[0540] In the following content, the state in which the electronic device does not turn on the 2.4G wifi communication mode but turns on the cellular network (in the MHB frequency band) communication mode can be referred to as the MHB single state.

[0541] Figure 40 An exemplary antenna structure involved in the MHB single state scenario is shown.

[0542] As shown in Figure 40 , the antenna structure involved in the MHB single state scenario is similar to the third antenna structure described above, and the difference is that a plurality of frequency adjustment branches are included in the frequency control circuit connected to the connection point 406b of the radiator B. The feed point 104a of the radiator A is connected to the frequency control circuit and then grounded through the switching unit. The radiator H can include a ground terminal or not.

[0543] Among them, compared with the frequency control circuit 407b connected to the radiator B in Figure 31 , the frequency control circuit connected to the radiator B in Figure 40 includes more frequency adjustment branches, which can enable the radiator B to adjust more frequency bands. The frequency control circuit connected to the radiator A includes a plurality of frequency adjustment branches, which can enable the radiator A to adjust a plurality of different frequency bands.

[0544] Figure 41 An exemplary frequency adjustment rule involved in the MHB single state scenario is shown.

[0545] Figure 41 The letters A-F in

[0546] As shown in Figure 41As shown, in the MHB single-state scenario, the radiators responsible for the MHB frequency band can be, in order from low to high frequency, radiator C (main radiator), radiator D, radiator E, and radiator F. Among them, the operating frequency of radiator C belongs to the MHB frequency band, and the frequencies of the parasitic radiators (radiator D, radiator E, and radiator F) of radiator C are all higher than that of radiator C, so that the currents excited by each parasitic radiation are in the same direction as that of radiator C, which can play a positive parasitic radiator role on the radiator C, thereby making the electronic device have good communication ability with other electronic devices through the cellular network (in the MHB frequency band) communication mode. At the same time, radiator A switches the capacitance to generate a frequency lower than the MHB frequency (belonging to the MHB frequency band). Radiator B switches the capacitance to generate a frequency lower than the MHB frequency and higher than the frequency of radiator A, which together improves the performance of antenna 3 in the MHB single-state scenario.

[0547] It should be understood here that the frequencies of the various radiators involved in the embodiments of the present application can also be understood as resonant frequencies. Among them, the frequency of the parasitic radiator can also be understood as a parasitic resonant frequency.

[0548] It should be understood that the frequency control circuits involved in the foregoing related content are all LC series circuits, and in actual situations, they can also be other forms of frequency selection circuits, which are not limited by the embodiments of the present application.

[0549] It should also be understood that in the foregoing related content, radiator B and radiator H control the frequency to meet the required frequency by controlling the length of the radiator. In actual situations, as shown in Figure 42 , a frequency control circuit can also be added between radiator B or radiator H to adjust the frequency of radiator B and radiator H, respectively.

[0550] According to the frequency adjustment rule involved in the present application, the performance of the antenna A (for example, the antenna 2) can be improved when the electronic device is in the folded state. The performance includes the radiation efficiency of the antenna and the system efficiency, and can also include other contents. For example, the body SAR value of the antenna can also be reduced, and the transmission power of the antenna can be improved, thereby improving the antenna performance of the electronic device in the folded state in the free space scene or the handheld scene. The SAR (specific absorption rate) refers to the electromagnetic power absorbed by the unit mass of human tissue, and the unit is W / kg. The SAR value is generally used internationally to measure the thermal effect of the radiation of the foldable screen electronic device. The body SAR value represents the average specific absorption rate of the body when the antenna is close to the body. For example, taking the second antenna structure as an example, in the wifi single state scene of the electronic device, the SAR of the front face of the electronic device can be reduced from 1.4 to 0.78 compared with the SAR of the low performance scene 11 (the working frequency of the antenna 1 is the B3 frequency band of the medium-high frequency). The SAR of the top face of the electronic device can be reduced from 1.78 to 1.29 compared with the SAR of the low performance scene 11 (the working frequency of the antenna 1 is the B3 frequency band of the medium-high frequency). It should be understood that the above description of the SAR is based on the example of body 5mm 10g, normalized to -6dB.

[0551] In the above-mentioned related content, the radiator A can be adjusted by matching the frequency. The frequency of the radiator A can include other frequency bands in addition to the wifi 2.4G frequency band. For example, as shown in the foregoing Figure 6 、 Figure 12 、 Figure 20 、 Figure 26 , the radiator A also has a frequency between 1.55Ghz-1.65Ghz. The frequency belongs to the GPS frequency band, and can provide the electronic device with a GPS communication mode.

[0552] The foregoing radiator G can provide the electronic device with 5G communication and 5G wifi communication. Here it is not used to participate in the improvement of the performance of the antenna 2, and the performance of the antenna 2 can also be improved by using the radiator G in the case that the electronic device does not start the 5G communication mode and the 5G wifi communication mode.

[0553] The following describes the phenomenon that the more parasitic radiators that meet condition 1 have the same direction of the current generated on the main radiator, the more the performance of the target antenna (including the main radiator) is improved.

[0554] As Figure 43As shown in (1), the radiator A is a main radiator, and the radiators C-D are parasitic radiators. When the currents excited by each parasitic radiator are in the same direction as that of the radiator A, and each radiator is arranged in a straight line, the floor eigenmode of the floor is as shown in (2). Figure 43 As shown in (2), the floor eigenmode is excited better.

[0555] The more the parasitic radiators in the same direction as the current of the radiator A (main radiator) satisfy condition 1, the greater the magnetic potential of the radiator A, and thus the higher the efficiency (for example, radiation efficiency) of the target antenna (including the radiator A).

[0556] The relationship between the magnetic potential and the current in the same direction can be referred to the following formula (1) and formula (2).

[0557]

[0558] In formula (1), represents the magnetic potential of the radiator A, represents the sum of the currents of the parasitic radiators of the radiator A. The greater the sum of the currents, the greater the magnetic potential of the radiator A. Formula (2) indicates that the more the radiators in the same direction as the current of the radiator A (main radiator), the greater the magnetic potential of the radiator A. Therefore, based on formula (1) and formula (2), the more the radiators in the same direction as the current of the radiator A (main radiator), the greater the magnetic potential of the radiator A.

[0559] The relationship between the efficiency of the radiator A and the magnetic potential can be referred to the following formula (3).

[0560]

[0561] In formula (3), P represents the efficiency of the radiator A. Based on formula (3), the greater the magnetic potential of the radiator A, the higher the efficiency (for example, radiation efficiency) of the target antenna (including the radiator A).

[0562] Based on formula (1) to formula (3), the more the parasitic radiators in the same direction as the current of the radiator A (main radiator) satisfy condition 1, the higher the efficiency (for example, radiation efficiency) of the radiator A.

[0563] The following describes the phenomenon that the more the parasitic radiators satisfying condition 2 are in the opposite direction of the current of the main radiator, the higher the performance of the target antenna (including the main radiator).

[0564] As shown in (1), in the case that the current directions of the radiator D and the radiator A are opposite, the equivalent current Figure 44 of the target antenna (including the radiator A) is and the equivalent magnetic current Orthogonal, similar to the magnetic dipole, the two kinds of radiation are complementary, so that the target antenna has good radiation efficiency.

[0565] It should be understood herein that the aforementioned first antenna branch includes all the radiators arranged in the first device body 100. The second antenna branch includes all the radiators arranged in the second device body 200.

[0566] In some possible cases, the first antenna branch includes at least the aforementioned radiator A and the radiator C. The second antenna branch includes at least the aforementioned radiator B and the radiator D. In the case where the electronic device is in the folded state, the projection of the first antenna branch in the second device body 200 overlaps with the second antenna branch. The description of each radiator can refer to the aforementioned description of the radiators A-D, which will not be repeated here.

[0567] In this case, when the electronic device is in the wifi single state, the frequencies of the radiators A-D can still be adjusted based on the frequency adjustment rule, so that the current directions of the radiators A and D are the desired current directions to improve the performance of the antenna.

[0568] Figure 45 The current distribution of the radiators A-D when the electronic device is in the wifi single state is shown in this case.

[0569] As Figure 45 The current distribution of the radiators A-D when the electronic device is in the wifi single state is shown in this case. As shown in (1) of the figure, the first antenna branch is specifically distributed along the L-shaped frame (i.e., the frame at the corner) of the first device body 100, and the second antenna branch is specifically distributed along the L-shaped frame of the second device body 200. Among them, the radiator A is distributed with current A, and the radiators B and C are both distributed with current in the same direction as current A. The radiator D is distributed with current in the opposite direction of current A. At this time, the way to adjust the frequencies of the radiators A-D can refer to the description of adjusting the frequencies of the radiators A-D in the aforementioned Figure 5A and related contents, which will not be repeated here.

[0570] As Figure 45 The current distribution of the radiators A-D when the electronic device is in the wifi single state is shown in this case. As shown in (2) of the figure, the first antenna branch is specifically distributed along the straight line frame of the first device body 100, and the second antenna branch is specifically distributed along the straight line frame of the second device body 200. Among them, the radiator A is distributed with current A, and the radiators B, C and D are all distributed with current in the same direction as current A. At this time, the way to adjust the frequencies of the radiators A-D can refer to the description of adjusting the frequencies of the radiators A-D in the aforementioned Figure 19AThe description of adjusting the frequencies of radiator A to radiator D in the relevant content will not be repeated here.

[0571] It should be understood that additional radiators can be added to the first antenna stub and the second antenna stub to further improve the antenna's performance.

[0572] For example, in another possible scenario, the first antenna stub may include radiator E in addition to radiators A and C mentioned above. The second antenna stub may include radiator F in addition to radiators B and D mentioned above. The descriptions of each radiator can be found in the previous descriptions of radiators A through F, and will not be repeated here.

[0573] In this case, even when the electronic device is in Wi-Fi single-mode, the frequencies of radiators A and D can still be adjusted based on the frequency modulation rules so that the current directions of radiators A and D are in the desired direction to improve the antenna performance.

[0574] Figure 46 The diagram shows the current distribution of radiator A to radiator D when the electronic device is in Wi-Fi singlet mode.

[0575] like Figure 46 As shown in Figure (1), when the first antenna stub is distributed along the L-shaped frame (i.e., the frame at the corner) of the first device body 100 and the second antenna stub is distributed along the L-shaped frame of the second device body 200, the current distribution of radiator A to radiator D when the electronic device is in Wi-Fi single state is a schematic diagram.

[0576] like Figure 46 As shown in Figure (2), when the first antenna stub is distributed along the straight edge of the first device body 100 and the second antenna stub is distributed along the straight edge of the second device body 200, the current distribution of radiator A to radiator D when the electronic device is in Wi-Fi single state is a schematic diagram.

[0577] like Figure 46 Middle (1) and Figure 46 As shown in Figure (2), currents in the same direction as radiator A are distributed on both radiator E and radiator F. The current distribution from radiator A to radiator D can be referenced in the aforementioned figure. Figure 45 The description is as follows. For information on frequency adjustment between radiators A and F, please refer to the aforementioned descriptions; they will not be repeated here.

[0578] In some possible cases, one feed point can be located on radiator A, and the other radiator can be located on radiator E. For example... Figure 47As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0579] As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown. Figure 47 As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0580] As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown. Figure 10 As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0581] As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0582] As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown. Figure 47 As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0583] As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown. Figure 24 As shown in the case, the electronic device is in the wifi and B41 coexistence state, and the current distribution of the radiators A-F is shown.

[0584] It should be understood herein that the aforementioned horizontal bezel can be understood as the aforementioned bezel 1, and the aforementioned vertical bezel can be understood as the aforementioned bezel 2. The horizontal and vertical are not to describe the positional relationship with the horizontal plane, but to represent the difference between the two bezels.

[0585] It should be understood herein that in some possible cases, in the wifi single-state scenario, the excitation source connected to the feed point in the radiator A emits the excitation signal. The other radiator (for example, the radiator E) can or can not include a feed point. The excitation source connected to the feed point of the other radiator can or can not emit the excitation signal. The embodiments of the present application do not limit this. For example, the other feed point can be placed on the radiator E, and can also be placed on other radiators. For example, when placed on the radiator E, the excitation source connected to the feed point on the radiator E can emit the excitation signal or can not emit the excitation signal.

[0586] In some possible cases, in the wifi and B41 coexistence state scenario, the excitation source connected to the feed point in the radiator A and the excitation source connected to the feed point in the radiator E can both emit the excitation signal.

[0587] In summary, in the wifi single-state scenario and the wifi and B41 coexistence state scenario, the embodiments of the present application do not emphasize whether the excitation source connected to each feed point emits the excitation signal. This should not constitute a limitation on the embodiments of the present application.

[0588] In some possible cases, one of the feed points can be arranged on the radiator A, and the other feed point can be arranged on the radiator C. As shown in Figure 48 FIG. 6 is a schematic diagram of current distribution of the radiators A-F when the electronic device is in the wifi and B41 coexistence state, according to the embodiments of the present application.

[0589] As shown in Figure 48 FIG. 6 is a schematic diagram of current distribution of the radiators A-F when the electronic device is in the wifi and B41 coexistence state, according to the embodiments of the present application. The radiator A, the radiator B, and the radiator D are mainly responsible for the wifi 2.4G frequency band. The radiator E, the radiator C, and the radiator F are mainly responsible for the B41 frequency band. The current D is distributed on the radiator A, the current same as the current D is distributed on the radiator B, and the current opposite to the current D is distributed on the radiator D. The current E is distributed on the radiator C, and the current same as the current E is distributed on the radiator E and the radiator F. At this time, the manner of adjusting the frequency of the radiators A-F can be referred to the aforementioned description.Figure 36 and the related content, the description of adjusting the frequencies of the radiators A-F is not repeated here.

[0590] In the above, according to the context, the term "when" used in the above embodiments can be interpreted as meaning "if" or "after" or "in response to determining" or "in response to detecting". Similarly, according to the context, the phrase "on determining" or "if detecting (the stated condition or event)" can be interpreted as meaning "if determining" or "in response to determining" or "on detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)".

[0591] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the technical solutions of the present application; even though the technical solutions of the present application have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent replacements; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable-screen electronic device, comprising: The folding-screen electronic device comprises a first device body and a second device body; the first device body and the second device body are connected through a rotating shaft; a first antenna branch is arranged along the frame of the first device body; and a second antenna branch is arranged along the frame of the second device body; wherein: The first antenna branch is open at both ends; the first antenna branch is provided with a first grounding end and a second grounding end; the first grounding end is close to the first open end of the first antenna branch; and the second grounding end is close to the second open end of the first antenna branch; the first antenna branch has a first feeding point; and the first feeding point is arranged between the first grounding end and the first open end; The second antenna branch is open at both ends; the second antenna branch is provided with a third grounding end and a fourth grounding end; the third grounding end is close to the third open end of the second antenna branch; and the fourth grounding end is close to the fourth open end of the second antenna branch; In the case that the electronic device is in a folded state, the first radiation segment and the second radiation segment are parallel; the first open end and the third open end are oriented in the same direction; and the projection of the first radiation segment on the second device body overlaps with the second radiation segment; and the third radiation segment and the fourth radiation segment are parallel; the second open end and the fourth open end are oriented in the same direction; and the projection of the third radiation segment on the second device body overlaps with the fourth radiation segment; wherein the first radiation segment refers to the radiation segment between the first grounding end and the first open end of the first antenna branch; the third radiation segment refers to the radiation segment between the second grounding end and the second open end of the first antenna branch; the second radiation segment refers to the antenna branch between the third grounding end and the third open end; and the fourth radiation segment refers to the radiation segment between the fourth grounding end and the fourth open end.

2. The folding-screen electronic device according to claim 1, wherein The projection of the second radiation segment on the second device body does not overlap with the third radiation segment.

3. The foldable-screen electronic device of claim 1, wherein, The first grounding end and the second grounding end are connected, but the connecting body connecting the first grounding end and the second grounding end is not a radiator; and the third grounding end and the fourth grounding end are connected, but the connecting body connecting the third grounding end and the fourth grounding end is not a radiator.

4. The foldable-screen electronic device according to claim 3, wherein The first antenna branch is specifically distributed along the L-shaped frame of the first device body; and the second antenna branch is specifically distributed along the L-shaped frame of the second device body.

5. The foldable-screen electronic device according to claim 4, wherein The L-shaped frame of the first device body specifically comprises a horizontal frame and a vertical frame intersecting with the horizontal frame at a first position; and the L-shaped frame of the second device body specifically comprises a horizontal frame and a vertical frame intersecting with the horizontal frame at a second position; the first grounding end and the second grounding end comprise the first position; and the third grounding end and the fourth grounding end comprise the second position.

6. The foldable-screen electronic device according to claim 4, wherein The second radiation section, the third radiation section and the fourth radiation section are distributed with the same direction current as the first current when the first radiation section is distributed with the first current.

7. The foldable-screen electronic device according to claim 3, wherein The first antenna branch is distributed along a linear frame of the first device body, and the second antenna branch is distributed along a linear frame of the second device body.

8. The foldable-screen electronic device according to claim 7, wherein The second radiation section, the third radiation section and the fourth radiation section are distributed with the same direction current as the first current when the first radiation section is distributed with the first current.

9. The foldable-screen electronic device according to any one of claims 1-8, wherein, The first antenna branch further comprises a fifth radiation section, and the second antenna branch further comprises a sixth radiation section. The fifth radiation section and the third radiation section have a first gap therebetween, and the fifth radiation section is provided with a grounding end. The sixth radiation section and the fourth radiation section have a second gap therebetween, and the sixth radiation section is provided with a grounding end.

10. The foldable-screen electronic device of claim 9, wherein, The first gap and the second gap have the same length.

11. The foldable-screen electronic device of claim 9, wherein, The fifth radiation section has an overlap with the sixth radiation section on the second device body when the folding screen electronic device is in the folded state.

12. The foldable-screen electronic device of claim 9, wherein, The fifth radiation section and the sixth radiation section are distributed with the same direction current as the first current.

13. The foldable-screen electronic device of claim 12, wherein, The second radiation section to the sixth radiation section are distributed with the current generated by the resonance of the first radiation section when the first radiation section is distributed with the first current.

14. The foldable-screen electronic device according to any one of claims 10-13, wherein, The third radiation section is connected to a first tuning circuit, the fourth radiation section is connected to a second tuning circuit, the fifth radiation section is connected to a third tuning circuit, and the sixth radiation section is connected to a fourth tuning circuit. The second radiation section is connected to a fifth tuning circuit.

15. The foldable-screen electronic device according to claim 14, wherein The second radiation section is distributed with the current of the first frequency and the current of the second frequency, and the first frequency and the second frequency are the working frequencies of the first radiation section.

16. The foldable-screen electronic device according to claim 15, wherein The current of the first frequency is generated by the resonance of the first radiation section at the first frequency, and the current of the second frequency is generated by the resonance of the first radiation section at the second frequency.

17. The foldable-screen electronic device according to claim 16, wherein The fifth radiation section is further provided with a second feeding point.

18. The foldable-screen electronic device of any of claims 10 or 11, wherein, The excitation source connected to the first feeding point emits an excitation signal, and the excitation source connected to the second feeding point does not emit an excitation signal, wherein the excitation source connected to the first feeding point is different from the excitation source connected to the second feeding point.

19. The foldable electronic device of claim 18, wherein, 20. The folding screen electronic device of claim 18, wherein, ​ In the case that the first antenna branch and the second antenna branch are distributed along the L-shaped frame, in the case that the fifth radiation section is arranged on the vertical frame of the L-shaped frame, and the first radiation section is arranged on the horizontal frame of the L-shaped frame, in the case that the first radiation section is distributed with the second current, the second radiation section and the fourth radiation section are distributed with currents in the same direction as the second current, and the fourth radiation section is distributed with a current in the opposite direction of the second current; and the fifth radiation section is distributed with the third current, and the sixth radiation section is distributed with a current in the same direction as the third current. 21.The foldable-screen electronic device of claim 20, wherein, in a case where the first antenna branch and the second antenna branch are distributed along an L-shaped bezel, the first antenna branch and the second antenna branch are arranged to be symmetric with respect to a center of the L-shaped bezel. In the case that the first radiation section is distributed with the second current, the second radiation section and the fourth radiation section are distributed with currents generated by resonance of the first radiation section, and the sixth radiation section is distributed with a current generated by resonance of the fifth radiation section.

22. The foldable-screen electronic device of claim 20, wherein, The third radiation section is distributed with a current weaker than the second current and the third current.

23. The foldable electronic device of claim 20, wherein, The third radiation section is not distributed with a current.

24. The foldable-screen electronic device of any one of claims 19-23, wherein, In the case that the first antenna branch and the second antenna branch are distributed along the straight frame, in the case that the fifth radiation section and the first radiation section are arranged on the horizontal frame, in the case that the first radiation section is distributed with the second current, the second radiation section, the fourth radiation section, and the sixth radiation section are all distributed with currents in the same direction as the second current; and the fifth radiation section is distributed with the third current, and the third radiation section is distributed with a current in the same direction as the third current. 25.The foldable-screen electronic device of claim 24, wherein, in a case where the first antenna branch and the second antenna branch are distributed along a straight bezel, the first antenna branch and the second antenna branch are arranged to be symmetric with respect to a straight line passing through the center of the display and the center of the bezel. In the case that the first radiation section is distributed with the second current, the second radiation section, the fourth radiation section, and the sixth radiation section are distributed with currents generated by resonance of the first radiation section, and the third radiation section is distributed with a current generated by resonance of the fifth radiation section.

26. The foldable-screen electronic device of any of claims 10 or 11, wherein, The third radiation section is further provided with a third feeding point.

27. The foldable-screen electronic device of claim 24, wherein, In the case that the first antenna branch and the second antenna branch are distributed along the L-shaped frame, in the case that the third radiation section is arranged on the vertical frame of the L-shaped frame, and the first radiation section is arranged on the horizontal frame of the L-shaped frame, in the case that the first radiation section is distributed with the fourth current, the second radiation section is distributed with a current in the same direction as the fourth current, and the fourth radiation section is distributed with a current in the opposite direction of the fourth current; and the third radiation section is distributed with the fifth current, and the fifth radiation section and the sixth radiation section are distributed with currents in the same direction as the fifth current.

28. The foldable-screen electronic device of claim 27, wherein, In the case that the first radiation section is distributed with the fourth current, the second radiation section and the fourth radiation section are distributed with currents generated by resonance of the first radiation section, and the fifth radiation section and the sixth radiation section are distributed with currents generated by resonance of the third radiation section.

29. The foldable-screen electronic device of any of claims 20-23, wherein, The excitation source connected with the first feeding point and the excitation source connected with the second feeding point both emit radio frequency signals; wherein the excitation source connected with the first feeding point is different from the excitation source connected with the second feeding point.

30. The foldable electronic device of claim 26, wherein, The excitation source connected with the first feeding point and the excitation source connected with the third feeding point both emit radio frequency signals; wherein the excitation source connected with the first feeding point is different from the excitation source connected with the third feeding point.

31. The foldable-screen electronic device according to any one of claims 19-23, 25, 27, 28, wherein, The first antenna branch further comprises a seventh radiation section, and the second antenna branch further comprises an eighth radiation section. The seventh radiation section and the first radiation section have a third gap therebetween; and the seventh radiation section is provided with a grounding end. The eighth radiation section and the second radiation section have a fourth gap therebetween; and the eighth radiation section is provided with a grounding end.

32. The foldable-screen electronic device of claim 31, wherein, The third gap and the fourth gap have the same length.

33. The foldable electronic device of claim 31, wherein, When the foldable-screen electronic device is in a folded state, a projection of the seventh radiation section on the second device body overlaps with the eighth radiation section.

34. The foldable electronic device of claim 31, wherein, The seventh radiation section and the second radiation section have the same direction of current distribution.

35. The foldable-screen electronic device of any of claims 32-34, wherein, The eighth radiation section is further provided with a fourth feeding point.

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