Folding screen electronic equipment and antenna device thereof

Abstract

The invention provides folding screen electronic equipment and an antenna device thereof. When the folding screen electronic equipment is in a folding state, parasitic radiators of main radiators in an antenna can be divided according to communication scenes, and working frequencies of the radiators in the antenna (including the main radiators) can be adjusted according to a preset frequency modulation rule; the current direction of each parasitic radiating body of the main radiating body in the antenna and the current direction of the main radiating body meet the expected target current direction, so that the performance of the antenna (including the main radiating body) is improved.

Description

[0001] This application is a divisional of the Chinese patent application submitted to the State Intellectual Property Office of China on April 3, 2023, with application number 202310389830.7 and invention name “Folding screen electronic device and its antenna device”. Technical Field

[0002] The present application relates to the field of antenna technology, and in particular to foldable screen electronic devices and antenna devices thereof. Background Art

[0003] Foldable screen electronic devices provide users with rich interaction methods and novel appearance. Foldable screen electronic devices include foldable electronic devices, such as foldable mobile phones. Foldable screen electronic devices are arranged with antennas to support communication between the foldable screen electronic device and other electronic devices. Generally, the antenna performance of the foldable screen electronic device is better when it is in the unfolded state, but it is worse in the folded state. The reason is that the antenna is made of metal, and its radiation performance is interfered by other metal objects. Therefore, a clean space (referred to as the clearance area) is usually reserved around the antenna to ensure the radiation performance of the antenna. When the foldable screen electronic device is changed from the unfolded state to the folded state, the two device bodies block each other, causing the clearance area to become smaller and smaller, and the antenna performance deteriorates accordingly. Summary of the invention

[0004] The present application provides a folding screen electronic device and an antenna device thereof. The antenna device in the folding screen electronic device can enable the antenna to have better performance when the electronic device is in a folded state.

[0005] In a first aspect, the present application provides a folding screen electronic device, which includes a first device body and a second device body; the first device body and the second device body are connected by a rotating shaft, a first antenna branch is provided along the frame of the first device body, and a second antenna branch is provided along the frame of the second device body, wherein: the first antenna branch is open at both ends, and a first grounding end and a second grounding end are provided on the first antenna branch, and the first grounding end and the second grounding end are close to each other; 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; a first feeding point is provided on the first antenna branch, and the first feeding point is placed between the first grounding end and the first open end; the second antenna branch is open at both ends, and a third grounding end and a fourth grounding end are provided on the second antenna branch, and the third grounding end and the fourth grounding end are close to each other; the third grounding end is close to the third open end of the second antenna branch, and the second grounding end is close to the fourth open end; when the folding screen electronic device is in a folded state, the projection of the first antenna branch on the second device body overlaps with the second antenna branch.

[0006] In some embodiments, the first device body may be the first device body 100 in the specification, and the second device body may be the second device body 200 in the specification. The first antenna branch may be understood as the general term for all the radiation segments on the first device body, and the second antenna branch may be understood as the general term for all the radiation segments on the second device body. The radiation segment here may be understood as the radiator in the specification. The open end may be the open end involved in the specification. For example, the first open end may be understood as the open end 103a in the specification, the second open end may be the open end 103c in the specification, the third open end may be the open end 203b in the specification, and the fourth open end may be the open end 203d in the specification. The first grounding terminal may be the grounding terminal 102a in the specification, the second grounding terminal may be the grounding terminal 102c in the specification, the third grounding terminal may be the grounding terminal 202b in the specification, and the fourth grounding terminal may be 202d in the specification. The first feeding point may 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-mentioned embodiment, two adjacent and close ground terminals are set 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 that does not include the feeding point can be used as a 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 when it is in the folded state. The first antenna branch and the second antenna branch are open at both ends, and can further include other radiation segments, which creates conditions for setting different operating frequencies based on different radiation segments. The radiator B overlaps with the radiator A, so that the coupling effect of the radiator B and the radiator A is better, and it is easier to play a positive parasitic radiation role on the radiator A. 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, a 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, when the antenna is working, the performance of the antenna can be further improved.

[0010] In combination with the first aspect, in some embodiments, the first antenna branches are specifically distributed along the L-shaped frame of the first device body, and the second antenna branches are specifically distributed along the L-shaped frame of the second device body.

[0011] In the above embodiment, the L-shaped frame may be the frame at the corner involved in the description. There are radiators arranged in a zigzag line.

[0012] In combination with the first aspect, in some embodiments, a first current is distributed on the first radiation segment, a current in the same direction as the first current is distributed on the second radiation segment; a current in the same direction as the first current is distributed on the third radiation segment, and a current in the opposite direction to the first current is distributed on the fourth radiation segment.

[0013] In the above embodiment, when the antenna branches are distributed along the L-shaped frame, the first radiating body segment is the main radiating segment, and the second radiating segment, the third radiating segment and the fourth radiating segment are parasitic radiating segments of the first radiating segment. The operating frequency band of the first radiating segment can be the wifi2.4G frequency band. Among them, the fourth radiating segment and the first radiating segment are in different device bodies, and the fourth radiating segment and the first radiating segment are not arranged in parallel. When the current distributed on the fourth radiating segment is opposite to the current distributed on the first radiating segment, the fourth radiating segment can play a positive parasitic radiation role on the first radiating segment to improve the performance of the antenna. The relationship between other radiating segments and the first radiating segment is that when the current distributed on them is in the same direction as that distributed on the first radiating body segment, they can play a positive parasitic radiation role on the first radiating segment.

[0014] In combination with the first aspect, in some embodiments, the first antenna branches are specifically distributed along the linear border of the first device body, and the second antenna branches are specifically distributed along the linear border of the second device body.

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

[0016] In combination with the first aspect, in some embodiments, a first current is distributed on the first radiation segment, and a current having the same direction as the first current is distributed on the second radiation segment, the third radiation segment, and the fourth radiation segment.

[0017] In the above embodiment, the first radiator segment is the main radiator segment, the working frequency band of the first radiator segment can be the wifi2.4G frequency band, and the other radiators are parasitic radiators of the first radiator segment. When the antenna branches are distributed along the straight frame, when the currents distributed in the other radiators and the first radiator segment are in the same direction as the currents distributed on the first radiator segment, they can have a positive parasitic radiation effect on the first radiator segment, thereby improving the performance of the antenna.

[0018] In combination with the first aspect, in some embodiments, the first antenna branch also includes a fifth radiating segment, and the second antenna branch also includes a sixth radiating segment; there is a gap between the fifth radiating segment and the third radiating segment; a grounding terminal is provided on the fifth radiating segment; there is a gap between the sixth radiating segment and the fourth radiating segment; and a grounding terminal is provided on the sixth radiating segment.

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

[0020] In the above embodiment, the antenna branches are coupled through slots and include more radiating ends. When the main radiating section is working, the main radiating section can have more parasitic radiating sections that play a forward radiating role, so as to further improve the antenna performance. Moreover, having more radiating sections creates conditions for setting different operating frequencies based on different radiating sections.

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

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

[0023] In combination with the first aspect, in some embodiments, currents having the same direction as the first current are distributed on both the fifth radiation segment and the sixth radiation segment.

[0024] In the above embodiment, the fifth radiator segment and the sixth radiator segment are both used as parasitic radiators of the first radiator segment. When the current in the fifth radiator segment and the sixth radiator segment is in the same direction as the current in the first radiator segment, they can have a positive parasitic radiation effect on the first radiator segment, thereby improving the antenna performance. The operating frequency (operating frequency A) of the first radiator segment can belong to the wifi2.4G frequency band.

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

[0026] In the above embodiment, the tuning circuit may be the frequency control circuit in the description. When the radiating section is connected to the tuning circuit, the radiating section may have more frequencies.

[0027] In combination with the first aspect, in some embodiments, the second radiating segment is connected to a fifth tuning circuit.

[0028] In the above embodiment, the tuning circuit may be the frequency control circuit in the description. When the second radiation segment is connected to the tuning circuit, the second radiation segment may have more frequencies.

[0029] In combination with the first aspect, in some embodiments, the current distributed on the second radiation segment includes a current of a first frequency and a current of a second frequency; the first frequency and the second frequency are operating frequencies of the first radiation segment.

[0030] In some embodiments, the first frequency may be the wifi 2.4G frequency band in the description, and the second frequency band may be the GPS frequency band in the description.

[0031] In the above embodiment, the fifth tuning circuit can be used to make two specific frequencies in the second radiation segment, and the resonance at one of the frequencies can make the current distributed in the second radiation segment a current of the first frequency. The current of the first frequency is the current excited in the second radiation segment when the first radiation segment resonates in the first frequency band (that is, the operating frequency is the first frequency). The resonance at the other frequency can make the current distributed in the second radiation segment a current of the second frequency. The current of the second frequency is the current excited in the second radiation segment when the first radiation segment resonates in the second frequency band (that is, the operating frequency is the second frequency).

[0032] In combination with the first aspect, in some embodiments, a second feeding point is further provided on the fifth radiating segment.

[0033] In some embodiments, the second feeding point may be the feeding point 104e in the specification. In the above embodiments, when a feeding point is provided on the fifth radiation segment, the antenna may have more operating frequency bands, thereby providing more communication modes for the electronic device.

[0034] In combination with 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 embodiment, although a second feeding point is provided on the fifth radiation segment, the excitation source connected to the second feeding point does not send an excitation signal. This can be understood as the electronic device does not use (does not turn on) the communication mode corresponding to the working frequency band of the fifth radiation segment.

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

[0037] In some embodiments, when the fifth radiation segment and the first radiation segment are distributed in the corner frame, the first radiation segment and the fifth radiation segment are both provided with a feeding point, then the first radiation segment and the fifth radiation segment can both be used as main radiation segments. The operating frequency of the first radiation segment (operating frequency A) can belong to the wifi2.4G frequency band. The operating frequency of the fifth radiation segment (operating frequency C) can belong to the B41 frequency band.

[0038] In the above embodiment, the electronic device can reasonably allocate the parasitic radiators of the first radiation segment and the fifth radiation segment, so that each main radiation segment has a specific parasitic radiation segment. In this way, the electronic device can better use the communication mode corresponding to the working frequency band of the first radiation segment and the communication mode corresponding to the fifth radiation segment. For example, according to the allocation of the radiation segment close to the main radiation segment as its main parasitic radiation segment, the main parasitic radiators of the first radiation segment may include: the second radiation segment, the fourth radiation segment. The main parasitic radiators of the fifth radiation segment may include: the sixth radiation segment.

[0039] In combination with the first aspect, in some embodiments, the current distributed on the third radiation segment is weaker than the second current and the third current.

[0040] In the above embodiment, the third radiation section is placed 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 different 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 is weak, which can avoid interference with the radiator A or the radiator E.

[0041] In combination with the first aspect, in some embodiments, no current is distributed on the third radiation segment.

[0042] In the above embodiment, the third radiation section is placed 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 different 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 distribution on the third radiation section can avoid interference with the radiator A or the radiator E.

[0043] In combination with the first aspect, in some embodiments, when the fifth radiating segment and the first radiating segment are specifically arranged on the horizontal frame, the second current is distributed on the first radiating segment, and the second radiating segment, the fourth radiating segment and the sixth radiating segment are all distributed with currents in the same direction as the second current; and, the third current is distributed on the fifth radiating segment, and the third radiating segment is distributed with a current in the same direction as the third current.

[0044] In some embodiments, when the fifth radiation segment and the first radiation segment are arranged in a straight line, a feeding point is provided in both the first radiation segment and the fifth radiation segment, and both the first radiation segment and the fifth radiation segment can be used as main radiation segments. The operating frequency of the first radiation segment (operating frequency A) can belong to the wifi2.4G frequency band. The operating frequency of the fifth radiation segment (operating frequency C) can belong to the B41 frequency band.

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

[0046] In combination with the first aspect, in some embodiments, a third feeding point is further provided on the third radiating segment.

[0047] In the above embodiment, the third feeding point may be the feeding point 404e in the specification. In some embodiments, when a feeding point is provided on the third radiation segment, the antenna may have more operating frequency bands, thereby providing more communication modes for the electronic device.

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

[0049] In some embodiments, when the third radiation segment and the first radiation segment are distributed in the corner frame, the first radiation segment and the third radiation segment are both provided with a feeding point, then the first radiation segment and the third radiation segment can both be used as the main radiation segment. The operating frequency of the first radiation segment (operating frequency A) can belong to the wifi2.4G frequency band. The operating frequency of the third radiation segment (operating frequency C) can belong to the B41 frequency band.

[0050] In the above embodiment, the electronic device can reasonably allocate the parasitic radiators of the first radiation segment and the fifth radiation segment, so that each main radiation segment has a specific parasitic radiation segment. In this way, the electronic device can better use the communication mode corresponding to the working frequency band of the first radiation segment and the communication mode corresponding to the third radiation segment. For example, according to the allocation of the radiation segment close to the main radiation segment as its main parasitic radiation segment, the main parasitic radiators of the first radiation segment may include: the second radiation segment and the fourth radiation segment. The main parasitic radiators of the third radiation segment may include: the fifth radiation segment and the sixth radiation segment.

[0051] In combination with the first aspect, in some embodiments, the excitation source connected to the first feeding point and the excitation source connected to the second feeding point both emit radio frequency signals; wherein 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 embodiment, feeding points are set on both the fifth radiation segment and the first radiation segment, and the excitation sources connected to the two feeding points both send excitation signals, which can be understood as the electronic device using (turning on) the communication mode corresponding to the working frequency band of the fifth radiation segment and the communication mode corresponding to the working frequency band of the first radiation segment. In addition, at this time, the communication performance of the electronic device in both communication modes is good.

[0053] In combination with the first aspect, in some embodiments, the excitation source connected to the first feeding point and the excitation source connected to the third feeding point both emit radio frequency signals; wherein 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, feeding points are set on both the third radiation segment and the first radiation segment, and the excitation sources connected to the two feeding points both send excitation signals, which can be understood as the electronic device using (turning on) the communication mode corresponding to the working frequency band of the fifth radiation segment and the communication mode corresponding to the working frequency band of the first radiation segment. In addition, at this time, the communication performance of the electronic device in both communication modes is good.

[0055] In combination with the first aspect, in some embodiments, the first antenna branch also includes a seventh radiating segment, and the second antenna branch also includes an eighth radiating segment; there is a gap between the seventh radiating segment and the first radiating segment; a grounding terminal is provided on the seventh radiating segment; there is a gap between the eighth radiating segment and the second radiating segment; and a grounding terminal is provided on the eighth radiating segment.

[0056] In some embodiments, the seventh radiation segment may be understood as the radiator G in the description, and the eighth radiation segment may be understood as the radiator H in the description.

[0057] In the above embodiment, the antenna branches are coupled through slots and include more radiating ends. When the main radiating section is working, the main radiating section can have more parasitic radiating sections that play a forward radiating role, so as to further improve the antenna performance. Moreover, having more radiating sections creates conditions for setting different operating frequencies based on different radiating sections.

[0058] In combination with the first aspect, in some embodiments, when the folding screen electronic device is in a folded state, the projection of the seventh radiating segment on the second device body overlaps with the eighth radiating segment.

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

[0060] In combination with the first aspect, in some embodiments, the current distributed on the seventh radiation segment is in the same direction as the current distributed on the second radiation segment.

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

[0062] In combination with the first aspect, in some embodiments, a fourth feeding point is further provided on the eighth radiating segment.

[0063] In some embodiments, the fourth feeding point may be the feeding point 104g in the specification. In the above embodiments, when a feeding point is provided on the seventh radiation segment, the antenna may have more operating frequency bands, thereby providing more communication modes for the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 A set of schematic diagrams showing an electronic device in a folded state and an unfolded state;

[0065] Figure 2 shows the fixed settings in different antenna configurations;

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

[0067] Figure 4 The exemplary arrangement of each radiator in the electronic device when the first antenna structure is used is shown;

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

[0069] Figure 5B An exemplary current distribution simulation diagram when the electronic device is in a wifi single state is shown;

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

[0071] Figure 7 A schematic diagram showing a comparison of frequency modulation rules involved in a wifi single-state scenario and a low-performance scenario 11;

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

[0073] Fig. 9 It is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in the WiFi single-state scenario and the low-performance scenario 11 obtained when the electronic device is tested for simulation effect;

[0074] Fig.10 The figure shows the comparison of current direction in the wifi and B41 coexistence scenario and the low performance scenario 12;

[0075] Fig.11 An exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G frequency band when the electronic device is in a wifi and B41 coexistence scenario is shown;

[0076] Fig.12A schematic diagram showing a preset frequency modulation rule 21b is shown;

[0077] Fig.13 A schematic diagram showing a comparison of frequency modulation rules in a wifi and B41 coexistence scenario and a low performance scenario 12;

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

[0079] Fig.15 This is a comparison diagram of the efficiency of antenna 2 in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained when the electronic device is tested for simulation effect;

[0080] Fig.16 This is a comparison diagram of the efficiency of antenna 1 in the wifi and B41 coexistence scenario and the low performance scenario 11 obtained when the electronic device is tested for simulation effect;

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

[0082] Fig.18 An exemplary arrangement of the first antenna structure in an electronic device is shown;

[0083] Fig.19A A comparison diagram of current directions in the wifi single state scenario and the low performance scenario 21 is shown in FIG.

[0084] Fig.19B An exemplary current distribution simulation diagram when the electronic device is in a wifi single state is shown;

[0085] Fig. 20 A schematic diagram showing a preset frequency modulation rule 22a is shown;

[0086] Fig.21 A schematic diagram comparing frequency modulation rules in a wifi single state scenario and a low performance scenario 21 is shown;

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

[0088] Fig.23 It is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in the wifi single-state scenario and the low-performance scenario 21 obtained when the electronic device is tested for simulation effect;

[0089] Fig.24 A schematic diagram showing a target current direction 22 is shown;

[0090] Fig.25An exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G frequency band when the electronic device is in a wifi and B41 coexistence scenario is shown;

[0091] Fig.26 A schematic diagram showing a preset frequency modulation rule 22b is shown;

[0092] Fig. 27 A schematic diagram showing a comparison of frequency modulation rules in a wifi and B41 coexistence scenario and a low performance scenario 22;

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

[0094] Fig.29 The efficiency comparison diagram of antenna 2 and the efficiency comparison diagram of antenna 1 in the wifi and B41 coexistence scenario and the low performance scenario 22 obtained when the electronic device is subjected to simulation effect testing;

[0095] Fig.30 This is a comparison diagram of the efficiency of antenna 1 in the wifi and B41 coexistence scenario and the low performance scenario 11 obtained when the electronic device is tested for simulation effect;

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

[0097] Fig.32 A target current direction 31 involved in a wifi single state scenario is shown;

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

[0099] Fig.34 A schematic diagram showing a preset frequency modulation rule 23a is shown;

[0100] Fig.35 This is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a wifi single-state scenario obtained when the electronic device is tested for simulation effect;

[0101] Fig.36 A target current direction 32 involved in the coexistence scenario of wifi and B41 is shown;

[0102] Fig.37A as well as Fig.37B An exemplary current distribution simulation diagram of each radiator when the electronic device is in a wifi and B41 coexistence state scenario is shown;

[0103] Fig.38A frequency diagram showing the radiators mainly responsible for the B41 frequency band;

[0104] Fig.39 This is a comparison chart of the efficiency of the electronic device in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained during the simulation effect test;

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

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

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

[0108] Fig.43 as well as Fig.44 An example diagram showing reasons for improved antenna performance;

[0109] Fig.45 A schematic diagram showing the current distribution of radiator A-radiator D when the electronic device is in a wifi single state under one condition;

[0110] Fig.46 A schematic diagram showing the current distribution of radiator A-radiator D when the electronic device is in a wifi single state under one condition;

[0111] Fig.47 A schematic diagram of current distribution of radiator A to radiator F when the electronic device is in a wifi and B41 coexistence state;

[0112] Fig.48 This is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in the coexistence state of wifi and B41. 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 used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to and includes any or all possible combinations of one or more listed items.

[0114] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0115] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "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 noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0116] An embodiment of the present application provides a folding screen electronic device, in which an antenna set is provided. The antenna set may include at least two antennas. Any antenna in the antenna set may include at least one radiator (provided with a feeding point), and the radiator may be used to receive electromagnetic wave signals and transmit 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 operating frequency of each antenna according to the preset frequency modulation rule 1 to communicate with other electronic devices through different communication modes. Among them, the communication mode includes but is not limited to one or a combination of the following communication modes: cellular network communication such as 2G / 3G / 4G / 5G, communication based on the global positioning system (GPS), wireless local area network (WLAN) (such as wireless fidelity (Wi-Fi) network) communication, Bluetooth (BT) communication and other communication modes.

[0117] When the electronic device is in a folded state, the operating frequency of each antenna is adjusted according to the preset frequency modulation rule 1, and when 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 communication mode A is low, it will cause the folding screen electronic device to have poor communication capability when communicating with other electronic devices in communication mode A. To address this issue, when the communication mode of the folding screen electronic device is communication mode A, the operating frequency of antenna A, or the operating frequency of antenna A and its coupled antenna can be readjusted according to the preset frequency modulation rule 2 to improve the performance of antenna A, thereby improving the communication capability of the folding screen electronic device when communicating with other electronic devices in communication mode A. Among them, the preset frequency modulation rule 2 is different from the preset frequency modulation rule 1.

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

[0119] It should be understood here that the antennas in the antenna set may have different antenna structures. When the antenna structures are different, the folding screen electronic device may readjust the operating frequency of antenna A and its coupled antenna according to different preset frequency modulation rules 2 to enhance the communication capability of the folding screen electronic device when communicating with other electronic devices in communication mode A.

[0120] The difference between the two antenna structures includes, but is not limited to: the arrangement of the radiators in the two antenna structures is different, or the frequency control circuits connected to the radiators in the two antenna structures are different.

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

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

[0123] Arrangement 2: The radiator is arranged in a folded line (e.g., L-shaped). For example, the radiator can be placed in the frame at the corner of the folding screen electronic device. That is, some radiators included in the antenna are placed in the horizontal frame, and other radiators are placed in the vertical frame.

[0124] The coupling between radiators in the antenna includes coupling through gaps.

[0125] In the following text, for the sake of convenience, the foldable screen electronic device will be referred to as an electronic device.

[0126] Figure 1 A set of schematic diagrams showing an electronic device in a folded state and an unfolded state.

[0127] like Figure 1 (1) shows a schematic diagram of an electronic device in a folded state. The electronic device includes a first device body 100, a second device body 200, a rotating shaft 300, a first floor ( Figure 1 Not shown), the second floor ( Figure 1 Not shown), the first main board ( Figure 1 Not shown) and the second main board ( Figure 1 not shown).

[0128] The first device body 100 and the second device body 200 are rotatably connected via a rotating shaft 300, so that the electronic device can switch between an unfolded state and a folded state. The first floor is disposed in the first device body 100, and the second floor is disposed in the second device body 200. The first main board and the second main board are disposed 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 the side where the main screen of the electronic device is located, and the second device body 200 is the device body on the side where the secondary screen of the electronic device is located. Of course, those skilled in the art can understand that, in other cases, the first device body 100 may be the device body on the side where the secondary screen of the electronic device is located, and the second device body 200 may be the device body on the side where the main screen of the electronic device is located, and this does not limit the protection scope of the present application.

[0130] In the embodiments of the present application, the electronic device is illustrated by a foldable mobile phone. Of course, those skilled in the art can understand that in other alternative 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] like Figure 1 (2) shows a schematic diagram of the electronic device in a folded state, wherein the first device body 100 and the first floor therein are placed on one side of the rotating shaft 300, and the second device body 200 and the second floor therein are placed on the other side of the rotating shaft 300.

[0132] Combination Figure 1 (1) and Figure 1As shown in (2), the radiator can be arranged along the frame of the electronic device. When the radiator is arranged in a straight line, it can be arranged in the frame included in area 301. When the radiator is arranged in a folded line (for example, L-shaped), it can be arranged in the frame included in area 302 (the frame at the corner). The radiators in the electronic device can be all straight lines or all folded lines, or partly straight lines and partly folded lines. Among them, area 301 can include area 301a and area 301b. Area 302 can include area 302a and area 302b.

[0133] It should be understood that in addition to the aforementioned components, the electronic device may also include other components. Any component may be implemented in the form of hardware, software, or a combination of hardware and software. For example, it may include a processor, an external memory interface, an internal memory, a 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, a headphone jack, a sensor module, a button, a motor, a camera, and a display screen.

[0134] Figure 2 The fixed arrangement in different antenna configurations is shown.

[0135] Combine the following Figure 1 as well as Figure 2 Describe in detail the fixed settings in different antenna structures.

[0136] At least one antenna includes two antenna branches, one of which (antenna branch 1) is disposed in the first device body 100, and the other (antenna branch 2) is disposed in the second device body 200. Figure 2 (1) and Figure 2 As shown in (2), antenna branch 1 includes radiator A and radiator C, and antenna branch 2 includes radiator B and radiator D. Radiator A is connected to the first floor in the first device body 100 through the ground terminal 102a, and radiator C is connected to the first floor in the first device body 100 through the ground terminal 102c. Radiator B is connected to the second floor in the second device body 200 through the ground terminal 202b, and radiator D is connected to the second floor in the second device body 200 through the ground terminal 202d.

[0137] The ground end 102a of radiator A and the ground end 102c of radiator C are close to each other. The ground end 202b of radiator B and the ground end 202d of radiator D are close to each other. The ground ends of two radiators being close to each other includes the two ground ends being connected but not including the radiator.

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

[0139] Among them, the open end can be called an open end.

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

[0141] Radiators A to D can be coupled with radiators of other antennas through gaps. Here, radiators A to D are placed in antenna 2 for illustration. Antenna 1 includes at least radiators E and F; antenna 3 includes at least radiators G and H. In some possible cases, radiators A and B can be coupled with radiators G and H respectively to achieve coupling between antenna 2 and antenna 3. Radiators C and D can be coupled with radiators E and F respectively to achieve coupling between antenna 2 and antenna 1.

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

[0143] What should be understood here is that Figure 2 The four radiators shown in (1) are arranged in a straight line. In other cases, the four radiators can also be arranged in other ways. Figure 2In (2), the four radiators can be arranged in a zigzag pattern, and the four antennas still meet the above-mentioned fixed settings. Radiator A and radiator C can be placed in different types of frames. For example, radiator A is placed in a horizontal frame, and radiator C is placed in a vertical frame. Radiator B and radiator D can be placed in different types of frames. For example, radiator B is placed in a horizontal frame, and radiator D is placed in a vertical frame.

[0144] What should be understood here is that Figure 2 The antenna structure diagram shown in the figure is drawn based on the perspective of facilitating the description of the scheme, and does not actually exist. Figure 2 In actual situations, when the electronic device is in a folded state, the antenna branch 1 on the first device body 100 and the antenna branch 2 on the second device body 200 overlap (see the following Figure 4 (2)). For the specific overlapping relationship, please refer to the aforementioned description of the overlapping relationship of each radiator. Because the two antenna branches overlap, there will be obstruction when observed from various viewing angles. It is difficult to reflect the details of each radiator in the antenna branch (such as the ground terminal, etc.) and the relative relationship from one viewing angle. Therefore, in order to show the details of the two antenna branches on the same plane, the two are staggered and displayed on the same plane. In the following content, the example diagrams that also adopt this display method also include: Figure 3 , Figure 5A , Figure 5B A person skilled in the art may determine the actual positional relationship of each radiator in the antenna branch in combination with the relevant example diagrams and text descriptions, which shall not constitute a limitation to the present application.

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

[0146] It should be understood that, in some possible cases, the frequency modulation rules involved in the embodiments of the present application are applicable to the case where the electronic device is in a folded state. In order to simplify the description below, it is assumed that the electronic device is in a folded state, and no text is used to emphasize it.

[0147] The first antenna structure is described in detail below.

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

[0149] like Figure 3As shown in (1), in the first antenna structure, the antenna 2 includes radiators arranged in a zigzag shape, and the antenna 2 may include radiators A, radiators C, radiators B and radiators D, and the four radiators meet the above-mentioned fixed settings. Among them, the radiator A is placed on the frame 1 of the first device body 100, and the radiator A is connected to the RF source. For example, the feeding point 104a of the radiator A is connected to the RF source 1 of the electronic device. The radiator C is placed on the frame 2 of the first device body 100. The grounding end 102a of the radiator A and the grounding end 102c of the radiator C are close to and opposite to each other, and the frame between the grounding end 102a and the grounding end 102c includes the frame at the corner of the first device body 100. The radiator B is placed on the frame 1 of the second device body 200, and the radiator D is placed on the frame 2 of the second device body 200. The grounding end 202b of radiator B and the grounding end 202d of radiator D are arranged close to and opposite to each other, and the frame between the grounding end 202b and the grounding end 202d includes the frame at the corner of the second device body 200. The radiator A-radiator D meets the aforementioned fixed setting, and the relevant description of the fixed setting can be referred to the aforementioned content, 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, and 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 may include a radiator E and a radiator F. The radiator E is placed on the frame 2 of the first device body 100, and the radiator E is connected to the RF source. For example, the feeding point 104e of the radiator E is connected to the RF source 2 of the electronic device. The radiator F is placed on the frame 2 of the second device body 200. When the electronic device is in a folded state, the radiator E and the radiator F are parallel to each other, and the open end 103e of the radiator E and the open end 203f of the radiator F face the same direction, the ground end 102e of the radiator E is connected to the first floor in the first device body 100, and the ground end 202f of the radiator F is connected to the second floor in the second device body 200. The RF source 2 is different from the RF source 1.

[0152] In the first antenna structure, the antenna 3 may include a radiator G and a radiator H. The radiator G is placed on the frame 1 of the first device body 100, and the radiator G is connected to the RF source. For example, the feeding point 104g of the radiator G is connected to the RF source 3 of the electronic device. The radiator H is placed on the frame 1 of the second device body 200. When the electronic device is in a folded state, the radiator G and the radiator H are parallel to each other, and the open end 103g of the radiator G and the open end 203h of the radiator H face the same direction, the ground end 102g of the radiator G is connected to the first floor in the first device body 100, and the ground end 202h of the radiator H is connected to the second floor in the second device body 200. The RF source 3 is different from the RF source 2 and the RF source 1.

[0153] The antenna 2 is coupled with the antenna 1 and the antenna 3 respectively. The coupling forms of the antenna 2 and the antenna 1 include: the radiator C is coupled with the radiator E through the slot 105c, and the open end 103c of the radiator C is arranged opposite to the open end 103e of the radiator E. The radiator D is coupled with the radiator F through the slot 105d, and the open end 203d of the radiator D is arranged opposite to the open end 203f of the radiator F.

[0154] The coupling form of antenna 2 and antenna 3 includes: radiator A is coupled to radiator G through slot 105a, and the open end 103g of radiator G is arranged opposite to the open end 103a of radiator A. Radiator B is coupled to radiator H through slot 105b, and the open end 203b of radiator B is arranged opposite to the open end 203h of radiator H.

[0155] When antenna 2 is coupled with antenna 1 and antenna 3, antenna 2 can share radiator C, radiator D and radiator F with antenna 1. Antenna 2 can share radiator B and radiator H with antenna 1. That is, antenna 2 can be said to include radiators A-D, radiators H and radiator F. Antenna 1 includes radiator E, radiator F, radiator C and radiator D. Antenna 3 includes radiator G, radiator H and radiator B.

[0156] In addition to the structural configuration described above, in some possible cases, the first antenna structure may also include but is not limited to one or more of the following structural configurations.

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

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

[0159] Structural setting 13: The position of the slit 105a in the first device body 100 is the same as the position of the slit 105b in the second device body 200, that is, the projections of the slit 105a and the slit 105b completely overlap.

[0160] Structural setting 14: The position of the slit 105c in the first device body 100 is the same as the position of the slit 105d in the second device body 200, that is, the projections of the slit 105a and the slit 105b completely overlap.

[0161] It should be understood here that the complete overlap of projections involved in the embodiments of the present application means that the projections are highly overlapped, and errors are allowed to exist.

[0162] like Figure 3 As shown in (2), the electronic device may 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 switch device 410c and a plurality of frequency modulation branches C1 arranged in parallel. The switch device 410c is used to select at least one frequency modulation branch C1, thereby adjusting the frequency of the radiator C. The switch device 410c may include at least one switch unit. The switch device 410c may select at least one frequency modulation branch C1 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches C1 may include a frequency modulation branch 421 and a frequency modulation branch 422. The frequency modulation branch 421 is connected to the switch unit s1, and the switch unit s1 is used to control whether the frequency modulation branch 421 is turned on. The frequency modulation branch 422 is connected to the switch unit s2, and the switch unit s2 is used to control whether the frequency modulation branch 422 is turned on. When the switch device 410c controls the switch unit s1 to be closed (ON) and controls the switch unit s2 to be opened (OFF), it means that the switch device 410c selects the connection of the frequency modulation branch 421 and does not select the connection of the frequency modulation branch 422. Other selection conditions of the switch device 410c can refer to the above description and will not be repeated here.

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

[0165] 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 400e. The frequency control circuit 400e includes a switch device 410e and a plurality of frequency modulation branches E11 arranged in parallel. The switch device 410e is used to select at least one frequency modulation branch E11, thereby adjusting the frequency of the radiator E. The switch device 410e may include at least one switch unit. The switch device 410e may select at least one frequency modulation branch E11 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches E11 may include a frequency modulation branch 423 and a frequency modulation branch 424. Among them, the frequency modulation branch 423 is connected to the switch unit s3, and the switch unit s3 is used to control whether the frequency modulation branch 423 is turned on. The frequency modulation branch 424 is connected to the switch unit s4, and the switch unit s4 is used to control whether the frequency modulation branch 424 is turned on. When the switch device 410e controls the switch unit s3 to be closed (ON) and controls the switch unit s4 to be opened (OFF), it means that the switch device 410e selects the frequency modulation branch 423 and does not select the frequency modulation branch 424. Other selection conditions of the switch device 410e can refer to the above description and will not be repeated here.

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

[0167] 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 400d. The frequency control circuit 400d includes a switch device 410d and a plurality of frequency modulation branches D1 arranged in parallel. The switch device 410d is used to select at least one frequency modulation branch D1, thereby adjusting the frequency of the radiator D. The switch device 410d may include at least one switch unit. The switch device 410d may select at least one frequency modulation branch D1 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches D1 may include a frequency modulation branch 420, a frequency modulation branch 425, and a frequency modulation branch 426. Among them, the frequency modulation branch 425 is connected to the switch unit s5, and the switch unit s5 is used to control whether the frequency modulation branch 425 is turned on. The frequency modulation branch 426 is connected to the switch unit s6, and the switch unit s6 is used to control whether the frequency modulation branch 426 is turned on. When the switch device 410d controls the switch unit s5 to be closed (ON) and controls the switch unit s6 to be opened (OFF), it means that the switch device 410d selects and connects the frequency modulation branch 425 and does not select and connect the frequency modulation branch 426. When the switch unit s5 and the switch unit s6 are both opened (OFF), it means that the switch device 410d selects and connects the frequency modulation branch 420. Other selection conditions of the switch device 410d can refer to the above description, which will not be repeated here.

[0168] In some possible cases, the connection point 106d is disposed near 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 switch device 410f and a plurality of frequency modulation branches F arranged in parallel. The switch device 410f is used to select at least one frequency modulation branch F, thereby adjusting the frequency of the radiator F. The switch device 410f may include at least one switch unit. The switch device 410f may select at least one frequency modulation branch F by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches F may include a frequency modulation branch 429, a frequency modulation branch 427, and a frequency modulation branch 428. Among them, the frequency modulation branch 427 is connected to the switch unit s7, and the switch unit s7 is used to control whether the frequency modulation branch 427 is turned on. The frequency modulation branch 428 is connected to the switch unit s8, and the switch unit s8 is used to control whether the frequency modulation branch 428 is turned on. When the switch device 410f controls the switch unit s7 to be closed (ON) and controls the switch unit s8 to be opened (OFF), it means that the switch device 410f selects and connects the frequency modulation branch 427 and does not select and connect the frequency modulation branch 428. When the switch unit s7 and the switch unit s8 are both opened (OFF), it means that the switch device 410f selects and connects the frequency modulation branch 429. Other selection conditions of the switch device 410f can refer to the above description, which will not be repeated here.

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

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

[0172] Figure 4 The exemplary arrangement of each radiator in the electronic device when the first antenna structure is used is shown.

[0173] For ease of observation, Figure 4 The relevant contents in (1) are demonstrated by taking the electronic device in the unfolded state as an example. Figure 4 (2) is an exemplary arrangement of the radiators when the electronic device is in the folded state.

[0174] like Figure 4As shown, radiator G, radiator A, radiator C and radiator E are placed in the first device body 100 of the electronic device. Among them, radiator A and radiator G are placed in the horizontal frame, and radiator C and radiator E are placed in the vertical frame, that is, radiator A and radiator C are placed in the frame at the corner of the first device body 100.

[0175] Radiators H, B, D, and F are placed in the second device body 200 of the electronic device. Radiators B and H are placed in the horizontal frame, and radiators D and F are placed in the vertical frame, that is, radiators D and B are placed in the frame at the corner of the second device body 200. The first device body 100 is connected to the second device body 200 through a 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] When the antenna structure is the first antenna structure, the working frequency band (frequency range) of the antenna 1 may include one or all of the medium and high frequency (MHB) bands or the N78 bands. At this time, the antenna 1 can be responsible for providing one or more of the 2G / 3G / 4G / 5G communication modes for the electronic device. The working frequency band of antenna 2 includes one or more of the GPS band or the wifi2.4G band. At this time, the antenna 2 can be responsible for providing GPS communication and 2.4G wifi communication for the electronic device. The working frequency band of antenna 3 includes the N78 band or the wifi5G 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 wifi2.4G band is usually 2.400GHz-2.4835GHz. The wifi5G band is usually 2.484Ghz-4.915Ghz. Among them, 2G / 3G / 4G / 5G communications can be collectively referred to as cellular network communications.

[0179] It should be understood here that the operating frequency bands of each antenna and the communication modes provided are examples, and may be different operating frequency bands and provide different communication modes in different situations, which are not limited in the embodiments of the present application.

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

[0181] By adjusting the operating frequencies of antenna 1-antenna 3 according to the preset frequency modulation rule 11, each antenna can resonate at at least one target operating frequency to provide various communication modes for the electronic device, including one or more of 2G / 3G / 4G / 5G communication, GPS communication, 2.4Gwifi communication, and 5Gwifi communication. Among them, at least one target operating frequency corresponding to an antenna belongs to the working frequency band of the antenna. Among them, the preset frequency modulation rule 11 may include the frequency modulation rule 11a and the frequency modulation rule 11b involved below. For the relevant description of the frequency modulation rule 11a and the frequency modulation rule 11b, please refer to the following content. For example, the preset frequency modulation rule 11a can refer to the following description of the frequency modulation rule 11a. Figure 7 The preset frequency modulation rule 11b can refer to the following description of Fig.13 Description of the relevant content in .

[0182] However, when the operating frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 11, the following low-performance scenario will occur: when the antenna (antenna A) responsible for providing communication mode A has low performance, it will cause the folding screen electronic device to have poor communication capabilities when communicating with other electronic devices using the communication mode A. The following examples illustrate two low-performance scenarios (low-performance scenario 11 and low-performance scenario 12) that occur when the electronic device sets the first antenna structure and uses the preset frequency modulation rule 11, as well as solutions for the low-performance scenarios.

[0183] Low performance scenario 11:

[0184] When the operating frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 11a, and the electronic device has 2.4G wifi communication enabled and cellular network communication disabled, antenna 2 has low performance when operating in the wifi 2.4G frequency band, resulting in poor communication capability of the electronic device when communicating with other electronic devices in the wifi single state. The wifi single state refers to the 2.4G wifi communication enabled and the cellular network communication disabled.

[0185] It should be understood here that when the electronic device is in the wifi single state, it can maintain communication with other electronic devices through the 2.4G wifi communication method, so it can not use the cellular network communication, but the electronic device still has the ability to use the cellular network communication. That is, at this time, the cellular network communication method can be in an open state, and the electronic device can use services such as making calls through the cellular network communication method.

[0186] The reason why antenna 2 has low performance when operating in the wifi 2.4G band in low performance scenario 11 can be found in the following Figure 7 The description is not repeated here.

[0187] The following describes the improvement method and related content for low performance scenario 11.

[0188] For low-performance scenario 11, based on the first antenna structure in the present application, the electronic device can readjust the working frequency of antenna 2 and antenna 1 coupled thereto according to the preset frequency modulation rule 21a, so that the current direction of antenna 1 and each radiator in antenna 2 is adjusted to the target current direction (recorded as target current direction 11), and the target current direction 11 is the current direction that satisfies the wifi single state when the first antenna structure is adopted. Antenna 1 and each radiator in antenna 2 can be used to provide 2.4G wifi communication mode, so that the performance of antenna 2 is improved and the communication capability of the electronic device when communicating with other electronic devices in 2.4G wifi communication mode is improved. Among them, antenna 1 is an antenna responsible for providing cellular network communication. Because the electronic device in the low-performance scenario 11 does not turn on the communication mode that antenna 1 is responsible for, the working frequency of antenna 1 can be adjusted to use antenna 1 to assist antenna 2 in improving performance.

[0189] When the electronic device is in the wifi single mode, a scenario in which the working frequencies of the antenna 2 and the antenna 1 coupled thereto are readjusted according to the preset frequency modulation rule 21a can be referred to as a wifi single mode scenario.

[0190] It should be understood here that if the communication mode responsible for other antennas (such as antenna 3) is not turned on, the operating frequency of the other antenna can also be adjusted to use the other antenna to assist antenna 2 in improving performance. Please refer to the description of the adjustment method of antenna 1, which will not be repeated here.

[0191] It should also be understood that it is also possible not to use antennas other than antenna 2 (such as antenna 1) to assist antenna 2 in improving performance. The performance of antenna 2 can be improved by some or all radiators in antenna 2 cooperating with each other.

[0192] First, the reason why the target current direction is generated is described.

[0193] It should be understood that the reasons for generating the target current direction may include: when the current generated by the parasitic radiator satisfying condition 1 in antenna 1 and antenna 2 is in the same direction as the current generated by the main radiator, and when the current generated by the parasitic radiator satisfying condition 2 is in the opposite direction to the current generated by the main radiator, the performance of antenna 2 can be improved. The more parasitic radiators satisfying condition 1 are in the same direction as the current generated by the main radiator, or the more parasitic radiators satisfying condition 2 are in the opposite direction to the current generated by the main radiator, the more the performance of antenna 2 is improved. The current generated by the radiator satisfying condition 3 should be weak (close to no current) to avoid adverse effects on the main radiator.

[0194] The more parasitic radiators that satisfy condition 1 generate currents in the same direction as the main radiator, the more the performance of antenna 2 (including the main radiator) is improved. For a description of this phenomenon, please refer to the following description of Fig.43 The description of the related contents will not be repeated here. For the description of the phenomenon that the more parasitic radiators that meet condition 2 and the current generated on the main radiator are in the opposite direction, the more the performance of antenna 2 is improved, please refer to the following Fig.44 The description of the related contents will not be elaborated here.

[0195] It should be understood here that the main radiator includes a radiator whose operating frequency belongs to the frequency band corresponding to the communication mode enabled by the electronic device. Parasitic radiators include radiators other than the main radiator. For example, a radiator without a feeding point, a radiator whose feeding point is set but the RF source connected to the feeding point does not emit a RF signal. For example, when the electronic device is in a wifi single state, the main radiator can be radiator A, and the operating frequency of radiator A belongs to the wifi2.4G frequency band. The radiators in antenna 1 can all be used as parasitic radiators to improve the performance of radiator A, that is, radiator E with a feeding point can also be a parasitic radiator. When the electronic device is in a wifi and B41 coexistence state, radiator A in antenna 2 is the main radiator, and the operating frequency of radiator A belongs to the wifi2.4G frequency band. Radiator E in antenna 1 is the main radiator, and the operating frequency of radiator E belongs to the B41 frequency band. Other radiators can be parasitic radiators of radiator A or radiator E. Some radiators can also be parasitic radiators of radiator A and radiator E at the same time. For specific details, please refer to the relevant description below and will not be repeated here.

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

[0197] Among them, the parasitic radiator that meets condition 1 includes a parasitic radiator on the same side as the main radiator, or a parasitic radiator that is parallel to the main radiator. The parasitic radiator that meets condition 2 includes a parasitic radiator that is on the opposite side of the main radiator, is not parallel to the main radiator, and is close to the main radiator (for example, the closest). The parasitic radiator that meets condition 3 includes a parasitic radiator that is on the opposite side of the main radiator, is not parallel to the main radiator, and is far away from the main radiator (not the closest). Among them, the two radiators on the same side means that both radiators are placed in the first device body 100 or both radiators are placed in the second device body 200. The two radiators on different sides means that one of them is placed in the first device body 100 and the other is placed in the second device body 200. The two radiators are parallel to each other means that the two radiators are both in the horizontal frame or in the vertical frame. The two radiators are not parallel to each other means that one radiator is in the horizontal frame and the other radiator is in the vertical frame. Combined with the aforementioned related content and with reference to the aforementioned Figure 3 When the main radiator is radiator A, the parasitic radiators satisfying condition 1 may include: radiator C, radiator B, radiator H, and radiator E. The parasitic radiator satisfying condition 2 may include radiator D. The parasitic radiator satisfying condition 3 may include radiator F.

[0198] In the following content, a radiator that meets condition 1 may be referred to as a first-class radiator. A radiator that meets condition 2 may be referred to as a second-class radiator. A radiator that meets condition 3 may be referred to as a third-class radiator.

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

[0200] In the antenna structure provided by the present application, the direction of the current generated by each radiator has the following performance: the direction of the current generated by the parasitic radiator can mainly depend on the parasitic radiator and the main radiator with the highest degree of coupling with the parasitic radiator. For example, it depends on the positional relationship between the parasitic radiator and the main radiator and the frequency relationship with 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 ends are close, if the frequency of the main radiator is lower than the frequency of the parasitic radiator, the currents of the two radiators are in opposite directions, and if the frequency of the main radiator is higher than the frequency of the parasitic radiator, the currents of the two radiators are in the same direction. When the main radiator and the parasitic radiator are on the same side and the non-grounded ends are close (for example, the open ends are arranged oppositely), if the frequency of the main radiator is lower than the frequency of the parasitic radiator, the currents of the two radiators are in the same direction, and if the frequency of the main radiator is higher than the frequency of the parasitic radiator, the currents of the two radiators are in opposite directions. When the main radiator and the parasitic radiator are on different sides, the parasitic radiator is called the parasitic radiator on the opposite side of the main radiator. At this time, if the frequency of the main radiator is lower than the frequency of the parasitic radiator, the currents of the two radiators are in the same direction, and if the frequency of the main radiator is higher than the frequency of the parasitic radiator, the currents of the two radiators are in opposite directions.

[0202] Table 1

[0203]

[0204] Based on Table 1, with radiator A as the main radiator, the current direction relationship between several parasitic radiators of radiator A and radiator A is listed. As shown in Table 2, when radiator C is on the same side as radiator A and the grounded end is close, and the frequency of radiator A is lower than that of radiator C, the current directions of the two are opposite, otherwise the current directions are the same. When radiator E is on the same side as radiator A and the non-grounded end is close, and the frequency of radiator A is lower than that of radiator E, the current directions of the two are the same, otherwise the current directions are opposite. When radiator B (or radiator D) is on the opposite side of radiator A, and the frequency of radiator A is lower than that of radiator B (or radiator D), the current directions of the two are the same, otherwise the current directions are opposite. The current relationship between other parasitic radiators and the main radiator can refer to the relevant descriptions in the aforementioned Table 1 and Table 2 here, which will not be repeated here.

[0205] Table 2

[0206]

[0207] It should be understood here that for two parasitic radiators that are disposed on the same side, adjacent to each other, and with their open ends facing each other, if the electrical length of one parasitic radiator (parasitic radiator 1) is less than the preset length value 1, and the electrical length of the other parasitic radiator (parasitic radiator 2) is greater than the preset length value 1. Then the parasitic radiator 2 and the parasitic radiator 1 can be regarded as a parasitic radiator dominated by the parasitic radiator 2. At this time, the current direction of the parasitic radiator 1 does not depend on the main radiator with the highest degree of coupling with it, 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 the highest degree of coupling with it.

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

[0209] Figure 5A A comparison diagram of current directions in a wifi single-state scenario and a low-performance scenario 11 is shown in FIG.

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

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

[0212] Figure 5A (1) shows a schematic diagram of a target current direction 11.

[0213] refer to Figure 5A (1) shows the desired current direction (target current direction 11) of each radiator in antenna 1 and antenna 2 when the working frequency of antenna 2 and antenna 1 coupled thereto are readjusted according to the preset frequency modulation rule 21a.

[0214] When the electronic device is in the wifi single mode, antenna 2 is responsible for providing the electronic device with a 2.4G wifi communication mode, and radiator A is the main radiator. Radiators H, radiator B, radiator D, radiator F, radiator C, and radiator E are parasitic radiators. Based on the above content, radiators H, radiator B, radiator C, and radiator E are first-class radiators, and the direction of the desired current generated by them is the same as that of radiator A. Radiator D is a second-class radiator, and the direction of the desired current generated by it is opposite to that of radiator A. Radiator F is a third-class radiator, and the desired current generated by it is weak to avoid interfering with radiator A.

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

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

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

[0218] Combine the following Figure 5A (2) and the above Figure 5A (1) describes in detail the reason why the performance of antenna 2 is improved when the electronic device is in the wifi single mode after using the frequency modulation rules involved in this application.

[0219] refer to Figure 5A In (2), in the low performance scenario 11, the reasons leading to the low performance of the antenna 2 include but are not limited to one or more of the following reasons.

[0220] Reason 11-1 for low performance: Radiator D is a second-class radiator, but the current of radiator D is in the same direction as the current of radiator A. The resonance generated when the current of radiator D is in the same direction as the current of radiator A has an adverse effect on radiator A.

[0221] Combination Figure 5A (1) and Figure 5A As can be seen from (2), for the low performance reason 11-1, there is a first change: the current of radiator D changes from being in the same direction as the current of radiator A to being in the opposite direction, which can improve the performance of antenna 2. The first change for the low performance reason 11-1 is reflected in Figure 5A In the white circle①.

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

[0223] Reason 11-2 for low performance: Radiator F is a third-category radiator, but its current is relatively strong and has an adverse effect on radiator A.

[0224] Combination Figure 5A (1) and Figure 5A As can be seen from (2), for the low performance reason 11-2, there is a second change: the current of the radiator F is changed from strong to weak to reduce the adverse effect on the antenna 2, which can improve the performance of the antenna 2. The first change for the low performance reason 11-2 is reflected in Figure 5A In the middle white circle②.

[0225] Reason for low performance 11-3: Radiators H, B, C and E are first-class radiators. However, except for the currents generated by radiators H and B which are in the same direction as radiator A (main radiator), the currents generated by radiators C and E are in the opposite direction to radiator A, which will cause the performance of antenna 2 to deteriorate.

[0226] Combination Figure 5A (1) and Figure 5A As can be seen from (2), for the low performance reason 11-3, there is a third change: the current generated by radiator C and radiator E changes from being in the opposite direction to radiator A (main radiator) to being in the same direction, which can improve the performance of antenna 2. The third change for the low performance reason 11-3 is reflected in Figure 5A In the middle white circle③.

[0227] like Figure 5B As shown, it is an exemplary current distribution simulation diagram when the electronic device is in the wifi single state, which is similar to Figure 5A The target current direction 11 shown in (1) corresponds to that of radiator B to radiator E. Except for radiator D, which has a current direction opposite to that of radiator A, the current directions of the other radiators are the same as that of radiator A. Moreover, the current of radiator F is relatively weak.

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

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

[0230] The preset frequency modulation rule 21a may include: for the first antenna structure, when the electronic device is in the wifi single state, the operating frequency (recorded as operating frequency A) of radiator A (main radiator) is adjusted to belong to the wifi2.4G frequency band, for example, the operating frequency A may be 2.4Ghz. The operating frequency of radiator C is adjusted to be less than and close to the operating frequency A. The operating frequency of radiator D is adjusted to be less than and close to the operating frequency A. The electrical length of radiator B is set to be greater than the preset length value 1, and the electrical length of radiator H is set to be less than the preset length value 1 so that radiator B and radiator H can be regarded as a parasitic radiator with radiator B as the main body, and the frequency of radiator H can be regarded as the same as that of radiator B, and the operating frequency of radiator B is adjusted to be greater than and close to the operating frequency A. The operating frequency of radiator E is adjusted to be greater than and close to the operating frequency A. The operating frequency of radiator F is adjusted to be greater than the operating frequency A, wherein the operating frequency of radiator F is greatly different from the operating frequency A (for example, the largest in the frequency bands corresponding to each radiator), so that the expected current generated by radiator F is weak to avoid interference with radiator A.

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

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

[0233] It should also be understood that the above description is that radiator C, radiator D, radiator B, radiator H, radiator E and radiator F are all used as parasitic radiators of radiator A (main radiator). By adjusting the operating frequency of each parasitic radiator, a suitable parasitic resonance is generated after the main radiator resonates to improve the performance of antenna 2. In actual situations, more or fewer parasitic radiators than those involved in the above can be used to generate parasitic resonance to improve the performance of antenna 2. For example, in other possible cases, only radiators C, radiator D and radiator B can be used as parasitic radiators of radiator A (main radiator), and a suitable parasitic resonance is generated after the main radiator resonates to improve the performance of antenna 2. At this time, the preset frequency modulation rule 21a may include: for the first antenna structure, when the electronic device is in the wifi single state, the operating frequency (referred to as operating frequency A) of radiator A (main radiator) is adjusted to belong to the wifi2.4G frequency band, for example, the operating frequency A can be 2.4Ghz. The operating frequency of radiator C is adjusted to be less than and close to the 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, the radiators involved when the operating frequencies of radiator C, radiator D, radiator B and radiator A (main radiator) are from low to high may be: radiator C, radiator D, radiator A (main radiator), radiator B. At this time, the currents distributed in radiators B and radiator C are in the same direction as radiator A, and the current distributed in radiator D is in the opposite direction to radiator A.

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

[0235] Figure 6 This is an effect curve diagram of the S parameters of antenna 1 and antenna 2 in a wifi single-state scenario obtained when the electronic device is performing a simulation effect test. The horizontal axis represents the frequency in Ghz, and the vertical axis represents the amplitude value of S11 in dB.

[0236] Figure 6 There are two curves: the curve "antenna 2-wifi single mode" is referred to as curve Q61, and the curve "antenna 1-wifi single mode" is referred to as curve Q62. Curve Q61 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in the wifi single mode scenario. Curve Q62 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in the wifi single mode scenario.

[0237] Figure 6 The letters AF in the figure represent radiator A to radiator F respectively. Figure 6It can be seen that the radiators involved in the wifi single-state scenario from low to high frequency can be: radiator C (about 2.0Ghz), radiator D (about 2.2Ghz), radiator A (about 2.4Ghz), radiator B and radiator H (about 2.6Ghz), radiator E (about 2.8Ghz), radiator F (about 3Ghz). It is consistent with the above description of the preset frequency modulation rule 21a. Figure 6 The frequency relationship of each radiator shown in FIG. 1 can make the desired current direction of each radiator in antenna 1 and antenna 2 the target current direction 11. For the description of the target current direction 11, please refer to the above description of Figure 5A The description of (1) will not be repeated here.

[0238] It should be understood that if Figure 6 As shown, the reason why the frequency of radiation D is adjusted closer to radiator A (main radiator) than radiator C is that radiator D is farther away from radiator A than radiator C. If radiator D is expected to provide more positive parasitic radiation for 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, compared with radiators E and F, the reason why the frequency of radiator B is adjusted closer to radiator A (main radiator) is that: Figure 6 In the example, radiator B plays a major role in parasitic radiation on radiator A because radiator B and radiator A are both on a first side (eg, a horizontal side) of the electronic device and are relatively close to each other.

[0240] It should also be understood here that in a wifi single-state scenario, antenna 1 and antenna 2 can share radiator D, radiator F and radiator C. Figure 6 The radiation D and the radiator F are attributed to the antenna 1 for example. In actual situations, the radiation D and the radiator F can also be attributed to the antenna 2 for example, and this embodiment of the application does not limit this.

[0241] Figure 7 A schematic diagram comparing frequency modulation rules involved in a wifi single-state scenario and a low-performance scenario 11 is shown.

[0242] Figure 7 The following is a comparison curve of the S parameters of antenna 1 and antenna 2 in the wifi single-state scenario and the low-performance scenario 11 obtained when the electronic device is tested for simulation effect. The horizontal axis represents the frequency in Ghz, and the vertical axis represents the amplitude value of S11 in dB.

[0243] Figure 7 It includes 4 curves: the curve "antenna 2-wifi single state" is referred to as curve Q61, the curve "antenna 1-wifi single state" is referred to as curve Q62, the curve "antenna 2-scene 11" is referred to as curve Q63, and the curve "antenna 1-scene 11" is referred to as curve Q64. Among them, curve Q63 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 11. Curve Q64 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 11. The relevant descriptions of curve Q61 and curve Q62 are the same as those mentioned above. Figure 6 The curve Q61 and the curve Q62 and their related contents are the same and will not be repeated here.

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

[0245] Figure 7 The letters AF in the figure represent radiator A to radiator F respectively. Figure 7 It can be seen that the radiators involved in the low-performance scenario 11 from low to high frequencies can be: radiator E (about 1.8Ghz), radiator A (about 2.4Ghz), radiator F (about 2.5Ghz), radiator B and radiator H (about 2.6Ghz), radiator D (about 3.4Ghz), radiator C (about 4.3Ghz). This can be understood as an example of the frequency modulation rule 11a mentioned above.

[0246] The frequency relationship of each radiator shown in curve Q63 and curve Q64 conforms to the aforementioned description of the preset frequency modulation rule 11a. The current direction of each radiator in antenna 1 and antenna 2 can be the current direction in the low performance scenario 11 mentioned above. For the current direction in the low performance scenario 11, please refer to the aforementioned description of the preset frequency modulation rule 11a. Figure 5A The description of (2) will not be repeated here.

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

[0248] Radiator frequency change 71: The operating frequency of radiator D changes from 3.4Ghz, which is higher than radiator A (main radiator), to 2.2Ghz, which is lower than radiator A. This change is reflected in Figure 7 The white circle ① in the middle. The frequency change 71 of the radiator can change the current direction of the radiator D from the same direction as the radiator A to the opposite direction of the radiator A. For the description of the change of the current direction of the radiator D, please refer to the above Figure 5A The relevant description of the white circle ① in the figure will not be repeated here.

[0249] Radiator frequency change 72: The operating frequency of radiator F changes from 2.5 GHz to 3 GHz, which is farther from the operating frequency of radiator A. This change is reflected in Figure 7 The white circle ② in the middle. The frequency change 72 of the radiator can change the current of the radiator F from strong to weak. For the relevant description of the change of the current strength of the radiator F, please refer to the above Figure 5A The relevant description of the white circle ② in the figure will not be repeated here.

[0250] Radiator frequency change 73: The operating frequency of radiator E changes from 1.8 GHz, which is lower than radiator A (main radiator), to 2.8 GHz, which is higher than radiator A. This change is reflected in Figure 7 In the middle white circle③.

[0251] Radiator frequency change 74: The operating frequency of radiator C changes from 4.3Ghz, which is higher than radiator A (main radiator), to 2.2Ghz, which is lower than radiator A. This change is reflected in Figure 7 In the middle white circle④.

[0252] The radiator frequency change 73 can change the current direction of the radiator F from the opposite direction to the radiator A to the same direction as the radiator A. The radiator frequency change 74 can change the current direction of the radiator C from the opposite direction to the radiator A to the same direction as the radiator A. For the description of the change of the current direction of the radiator F and the radiator C, please refer to the above Figure 5A The relevant description of the white circle ③ in the figure will not be repeated here.

[0253] What should be understood here is that Figure 6 as well as Figure 7 The operating frequency values ​​of the radiators shown in the figure are for illustration only, and other values ​​may be used in actual situations. For example, the operating frequency of the same radiator may be 1 GHz greater or less than the operating frequency. This shall not constitute a limitation on the embodiments of the present application.

[0254] The following describes the process of adjusting the frequency of each radiator by at least one frequency control circuit in the wifi single-state scenario in combination with the preset frequency modulation rule 21a so that the desired current direction generated by each radiator matches the target current direction 11. At the same time, the difference between the adjustment process and the low-performance scenario is compared.

[0255] Figure 8 A schematic diagram of the frequency control circuit settings involved in a wifi single-state scenario and a low-performance scenario 11 is shown.

[0256] The following is based on Figure 8 Describe how to adjust Figure 7 The frequencies of the various radiators are shown in FIG.

[0257] In the second antenna structure, radiator B and radiator H are not connected to the frequency control circuit, and radiator H can be regarded as a parasitic radiator with radiator B as the main body. The operating frequencies of radiator B and radiator H can be equal and fixed in a frequency band. The frequency band is about 2.55Ghz-2.65Ghz. For example, the operating frequencies of radiator B and radiator H can be 2.6Ghz, etc. This embodiment of the present application does not limit this.

[0258] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit involved here also describes the frequency adjustment of radiators C, E, D and F.

[0259] like Figure 8 As shown in (1), it is the frequency control circuit setting in the wifi single-state scenario. For radiator C, the electronic device closes (ON) the switch unit s1 in the frequency control circuit 400c and opens (OFF) s2, so that the frequency modulation branch 421 is turned on. In this way, the radiator C is equivalent to connecting a capacitor of about 1.5p, and the frequency is adjusted to about 2.0Ghz. For radiator E, the electronic device opens (OFF) the switch unit s3 in the frequency control circuit 400e and closes (ON) s4, so that the frequency modulation branch 424 is turned on. In this way, the radiator E is equivalent to connecting an inductor of about 9n, and the frequency is adjusted to about 2.8Ghz. For radiator D, the electronic device opens (OFF) the switch unit s5 and the switch unit s6 in the frequency control circuit 400d, so that the frequency modulation branch 420 is turned on. In this way, the radiator D is equivalent to connecting a lumped element after a capacitor (about 1p) is connected in series with an inductor (about 0.6n), and the frequency is adjusted to about 2.2Ghz. For the radiator F, the electronic device turns on (OFF) the switch unit s7 in the frequency control circuit 400f and turns on (ON) the switch unit s8, so that the frequency modulation branch 428 is turned on. In this way, the radiator F is equivalent to a lumped element connected with a capacitor (about 2.4p) and an inductor (about 1n) in parallel, and the frequency is adjusted to about 3Ghz.

[0260] like Figure 8As shown in (2), it is the frequency control circuit setting in the low-performance scenario 11. For radiator C, the electronic device closes (ON) the switch unit s2 and the switch unit s1 in the frequency control circuit 400c, so that the frequency modulation branch 421 and the frequency modulation branch 422 are both turned on. In this way, the radiator C is equivalent to a lumped element after a capacitor (about 1.5p) and an inductor (about 1n) are connected in parallel, and the frequency is adjusted to a higher frequency band of about 4.3Ghz. For radiator E, the electronic device turns on (OFF) the switch unit s4 and the switch unit s3 in the frequency control circuit 400e, so that the frequency modulation branch 423 and the frequency modulation branch 424 are not turned on. In this way, the frequency of radiator E can be adjusted to about 2.8Ghz. For radiator D, the electronic device closes (ON) the switch unit s5 in the frequency control circuit 400d and turns on (OFF) the switch unit s6, so that the frequency modulation 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 the radiator F, the electronic device closes (ON) the switch unit s7 in the frequency control circuit 400f and opens (OFF) the switch unit s8, so that the frequency modulation 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 following describes the beneficial effects of the wifi single-state scenario compared to the low-performance scenario 11.

[0262] Fig. 9 This is a comparison chart of the radiation efficiency and system efficiency of antenna 2 in the WiFi single-state scenario and the low-performance scenario 11 obtained when the electronic device is performing a simulation effect test.

[0263] like Fig. 9 As shown in the figure, the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The closer the radiation efficiency and system efficiency are to 0 dB, the better the radiation efficiency and system efficiency of the antenna are, and the better the performance of the antenna is.

[0264] Fig. 9 In the figure, the curve "Radiation Efficiency - Wi-Fi Single Mode" and the curve "Radiation Efficiency - Scenario 11" respectively represent the radiation efficiency of antenna 2 when working in the Wi-Fi single mode scenario and the low-performance scenario 11. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the Wi-Fi single mode scenario, the radiation efficiency of antenna 2 is about -1.8 dB, and in the low-performance scenario 11, the radiation efficiency of antenna 2 is about -2.8 dB. Compared with the low-performance scenario 11, in the Wi-Fi single mode, the radiation efficiency of antenna 2 is improved by about 1 dB.

[0265] Fig. 9In the figure, the curve "System Efficiency - Wi-Fi Single Mode" and the curve "System Efficiency - Scenario 11" respectively represent the system efficiency of antenna 2 when it is working in the Wi-Fi single mode scenario and the low-performance scenario 11. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the Wi-Fi single mode scenario, the system efficiency of antenna 2 is about -2.3 dB, and in the low-performance scenario 11, the system efficiency of antenna 2 is about -3.3 dB. Compared with the low-performance scenario 11, in the Wi-Fi single mode, the system efficiency of antenna 2 is also improved by 1 dB.

[0266] Low performance scenario 12:

[0267] When the operating frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 11b, and the electronic device enables 2.4G wifi communication and cellular network communication (in the B41 frequency band), antenna 1 is responsible for providing the cellular network (in the B41 frequency band) communication mode, and antenna 2 is responsible for providing the 2.4G wifi communication mode. Although the performance of antenna 1 is better at this time, the performance of antenna 2 is low when working in the wifi 2.4G frequency band, resulting in poor communication capabilities of the electronic device when communicating with other electronic devices based on the 2.4G wifi communication mode in the coexistence state of wifi and B41. Among them, the coexistence state of wifi and B41 refers to the communication in which 2.4G wifi communication is enabled and the cellular network communication is in the B41 frequency band.

[0268] The reason why antenna 2 has low performance when operating in the wifi 2.4G band in low performance scenario 12 can be found in the following Fig.13 The description is not repeated here.

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

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

[0271] Based on the first antenna structure in the present application, the electronic device can readjust the operating frequency of the antenna 2 and the antenna 1 coupled thereto according to the preset frequency modulation rule 21b, so that the current direction of each radiator in the antenna 1 and the antenna 2 is adjusted to the target current direction (recorded as the target current direction 12), and the target current direction 12 is the current direction that satisfies the coexistence state of wifi and B41 when the first antenna structure is adopted. The electronic device can change the operating frequency of some radiators responsible for providing cellular network communication (in the B41 frequency band) so that the resonance generated is used to provide 2.4Gwifi communication mode, or the electronic device can change the operating frequency of some radiators responsible for providing cellular network communication (in the B41 frequency band) so that the resonance generated does not have an adverse effect on the 2.4Gwifi communication mode. In this way, the antenna 2 can better provide the 2.4Gwifi communication mode while the antenna 1 continues to be responsible for providing the cellular network communication (in the B41 frequency band). It can be achieved that the performance of the antenna 2 is improved while the performance of the antenna 1 is balanced. The reason for generating the target current direction here can refer to the aforementioned description of generating the target current direction, which will not be repeated here.

[0272] When the electronic device is in the wifi and B41 coexistence state, the scenario of re-adjusting the working frequencies of antenna 2 and antenna 1 according to the preset frequency modulation rule 21b can be called the wifi and B41 coexistence state scenario.

[0273] Fig.10 The figure shows a comparison of current directions in the wifi and B41 coexistence scenario and the low performance scenario 12.

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

[0275] Fig.10 (1) shows a schematic diagram of a target current direction 12.

[0276] refer to Fig.10 (1) shows the desired current direction (target current direction 12) of each radiator in antenna 1 and antenna 2 when the operating frequencies of antenna 2 and antenna 1 are readjusted according to the preset frequency modulation rule 21b.

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

[0278] The radiators mainly responsible for the B41 frequency band include radiator E and radiator F. At this time, radiator E is the main radiator, and radiator F is a first-class radiator, and the desired current direction generated by radiator F is the same as that of radiator E.

[0279] It should be understood here that the parasitic radiators of the radiator E may include radiators B, D and other parasitic radiators in addition to radiator F. However, in the scenario where wifi and B41 coexist, radiators other than radiator F have less impact on radiator E and greater impact on radiator A. They will not be described here and will be described when radiator A is discussed below.

[0280] The radiators mainly responsible for the wifi2.4G frequency band include radiator A, radiator B, radiator D, and radiator H. In this case, radiator A is the main radiator. Radiators H and radiator B are first-class radiators, and the expected current direction they generate is the same as that of radiator A. Radiator D is a second-class radiator, and the expected current direction it generates is opposite to that of radiator A. Radiator C is a third-class radiator, and the expected current it generates is weaker to avoid interfering with radiator A or radiator E.

[0281] Here, the current of the radiator C is weaker, including that the current of the radiator C is weaker than the current of the radiator A and the current of the radiator E.

[0282] In some possible cases, in the second antenna structure, when the electronic device is in a scenario where wifi and B41 coexist, current may not be distributed on the radiator C.

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

[0284] It should be understood that the current direction of radiator A (main radiator) and radiator E (main radiator) is taken as Fig.10 In actual situations, the current directions of the radiator A and the radiator E can also be different from Fig.10 The direction shown in (1) is opposite to that shown in (1). The present application does not limit this.

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

[0286] Combine the following Fig.10 (2) and the above Fig.10(1) describes in detail the reason why the performance of antenna 2 is improved when the electronic device is in a wifi and B41 coexistence state after using the frequency modulation rules involved in this application.

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

[0288] Reason 12-1 for low performance: Radiator D is a parasitic radiator of radiator A (main radiator) and is a second-class radiator, but the current of radiator D is in the same direction as the current of radiator A. The resonance generated when the current of radiator D is in the same direction as the current of radiator A has an adverse effect on radiator A.

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

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

[0291] Reason for low performance 12-2: In the coexistence scenario of WiFi and B41, the degree of coupling between radiator C and radiator A (main radiator) and radiator E (main radiator) is relatively high. When the current of radiator C is strong, if it produces good parasitic radiation effect on one main radiator, it may have an adverse effect on the other main radiator.

[0292] Combination Fig.10 (1) and Fig.10 As can be seen from (2), for the low performance reason 12-2, there is a second change: the current of the radiator C changes from strong to weak to reduce the adverse effects on the antenna 2 or the antenna 1. The second change for the low performance reason 12-2 is reflected in Fig.10 In (2), see the white circle ② in the middle.

[0293] Fig.11 An exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in a wifi and B41 coexistence scenario is shown.

[0294] like Fig.11 As shown in (1), it is a simulation diagram of the current distribution of each radiator mainly responsible for the wifi2.4G frequency band when the electronic device is in the coexistence state of wifi and B41. Fig.10 The current direction of each radiator corresponds to the target current direction 12 shown in (1). The current direction of radiator D is opposite to that of radiator A. The current direction of radiator B and radiator H is the same as that of radiator A. And, based on Fig.11 As can be seen in (1), the current of radiator C is weaker than that of other radiators.

[0295] like Fig.11 As shown in (2), it is a current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G frequency band in the electronic device in the low performance scenario 12. At this time, the current direction of radiator D is the same as the current direction of radiator A, which will cause the performance of antenna 2 (including radiator A) to be reduced.

[0296] It should be understood here that for the first antenna structure, when the electronic device is in other states, the operating frequencies of antenna 1 and antenna 2 can be adjusted according to the preset frequency modulation 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. This embodiment of the application will not be repeated.

[0297] Next, the preset frequency modulation rule 21 b involved in adjusting the target current direction 12 is described.

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

[0299] Among them, the operating frequency of radiator A (main radiator) (referred to as operating frequency A) belongs to the wifi2.4G frequency band. For example, the operating frequency A can be 2.4Ghz. The operating frequency of radiator D is less than and close to the operating frequency A. The electrical length of radiator B is set to be greater than the preset length value 1, and the electrical length of radiator H is set to be greater than the preset length value 1 so that radiator B and radiator H can be regarded as a parasitic radiator with radiator B as the main radiator, then the frequency of radiator H and radiator B can be the same. Adjust the operating frequency of radiator B to be greater than and close to the operating frequency A. Then, in the wifi and B41 coexistence scenario, the frequencies of the radiators mainly responsible for providing 2.4Gwifi communication methods can be: radiator D, radiator A, radiator B and radiator H.

[0300] The operating frequency of radiator E (main radiator) (referred to as operating frequency E) belongs to the B41 frequency band. For example, the operating frequency E can be 2.55Ghz. The operating frequency of radiator F is greater than the operating frequency E and is close to the operating frequency E, so that the desired current generated by radiator F is in the same direction as radiator E. And the operating frequency of radiator F involved in the wifi and B41 coexistence scenario is less than the operating frequency of radiator F involved in the aforementioned wifi single state. Then, in the wifi and B41 coexistence scenario, the radiators mainly responsible for providing the cellular network (in the B41 frequency band) communication method, when the frequencies are from low to high, the radiators involved can be: radiator E, radiator F.

[0301] In the scenario where wifi and B41 coexist, the operating frequency of radiator C (recorded as operating frequency C1) can be adjusted to a frequency that is greatly different from operating frequency A and operating frequency E based on the preset frequency modulation rule 21b. In some possible cases, the operating frequency of radiator C can be adjusted to a very high position (greater than 4G), such as 5G. In this way, the current of radiator C can be made weaker to reduce the adverse effects on antenna 2 or antenna 1.

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

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

[0304] Fig.12 The effect curve diagram of the S parameters of antenna 1 and antenna 2 in the scenario of wifi and B41 coexistence is obtained when the electronic device is tested for simulation effect. Fig.12As described above, the horizontal axis represents the frequency, the unit is Ghz, and the vertical axis represents the amplitude value of S11, the unit is dB.

[0305] Fig.12 There are two curves in it: 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. Curve Q21 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in the scenario of wifi and B41 coexistence state. Curve Q22 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in the scenario of wifi and B41 coexistence state.

[0306] Fig.12 The letters AF in the figure represent radiator A to radiator F respectively. Fig.12 It can be seen that in some possible cases, in the coexistence scenario of wifi and B41, the frequencies of the radiators mainly responsible for the wifi 2.4G frequency band can be, from low to high, radiator D (about 2.0Ghz), radiator A (about 2.4Ghz), radiator B and radiator H (about 2.6Ghz).

[0307] The frequencies of the radiators mainly responsible for the wifi 2.4G frequency band may be, from low to high, radiator E (approximately 2.55Ghz) and radiator F (approximately 2.8Ghz).

[0308] The operating 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.

[0309] Fig.12 The frequency relationship of each radiator shown in FIG. 1 is consistent with the aforementioned description of the preset frequency modulation rule 21b. The desired current direction of each radiator in antenna 1 and antenna 2 can be made the target current direction 12. For the description of the target current direction 12, please refer to the aforementioned description of the preset frequency modulation rule 21b. Fig.10 The description of (1) will not be repeated here.

[0310] It should also be understood here that in a wifi single-state scenario, antenna 1 and antenna 2 can share the radiator D. Fig.12 The radiation D is attributed to antenna 1 for example. In actual situations, the radiation D may also be attributed to antenna 2 for example, which is not limited in the embodiments of the present application.

[0311] Fig.13 A schematic diagram comparing frequency modulation rules in a wifi and B41 coexistence scenario and a low-performance scenario 12 is shown.

[0312] Fig.13The following is a comparison curve of the S parameters of antenna 1 and antenna 2 in the wifi and D41 coexistence scenario and the low performance scenario 12 obtained when the electronic device is tested for simulation effect. Fig.13 As described above, the horizontal axis represents the frequency, the unit is Ghz, and the vertical axis represents the amplitude value of S11, the unit is dB.

[0313] Fig.13 The graph includes four curves: the curve "antenna 2-coexistence state" is referred to as curve Q21, the curve "antenna 1-coexistence state" is referred to as curve Q22, the curve "antenna 2-scenario 12" is referred to as curve Q23, and the curve "antenna 1-scenario 12" is referred to as curve Q24. Curve Q23 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 12. Curve Q24 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 11. The description of curves Q21 and Q22 is the same as above. Fig.12 The curve Q21 and the curve Q22 and their related contents are the same and will not be repeated here.

[0314] What should be understood here is that Fig.13 The curve Q23 and the curve Q24 shown in FIG. 1 are one case in the low performance scenario 12. In this case, in the low performance scenario 12, the operating frequency of the antenna 1 is the medium and high frequency B41 frequency band (abbreviated as MHBB41).

[0315] Fig.13 The letters AF in the figure represent radiator A to radiator F respectively. Fig.13 It can be seen that in low-performance scenario 12, the radiators mainly responsible for the wifi2.4G frequency band include radiator A (main radiator) and the main parasitic radiators of radiator A, including radiator B and radiator H. The radiators mainly responsible for the B41 frequency band include radiator E (main radiator) and the main parasitic radiators of radiator E, including radiator F and radiator C.

[0316] In low-performance scenario 12, the frequencies of the radiators mainly responsible for the wifi2.4G frequency band can be, from low to high, radiator A (approximately 2.4Ghz), radiator B and radiator H (approximately 2.6Ghz). The frequencies of the radiators mainly responsible for the wifi2.4G frequency band can be, from low to high, radiator E (approximately 2.55Ghz), radiator F (approximately 3.0Ghz), and radiator C (approximately 3.5Ghz). The operating frequency of radiator D (not shown) is adjusted to a very high position (greater than 4G), such as 4.6G. In this way, the current of radiator D can be made weaker to reduce the adverse effects on antenna 2 or antenna 1. This can be understood as an example of the aforementioned frequency modulation rule 11b.

[0317] The frequency relationship of each radiator shown in curve Q23 and curve Q24 can make the current direction of each radiator in antenna 1 and antenna 2 the current direction in the low performance scenario 12 mentioned above. For the current direction in the low performance scenario 12, please refer to the above Fig.10 The description of (2) will not be repeated here.

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

[0319] Radiator frequency change 31: The operating frequency of radiator D changes from 4.6Ghz, which is higher than radiator A (main radiator), to 2.0Ghz, which is lower than radiator A. This change is reflected in Fig.13 The white circle ① in the middle. The frequency change 31 of the radiator can change the current direction of the radiator D from the same direction as the radiator A to the opposite direction of the radiator A. For the relevant description of the change of the current direction of the radiator D, please refer to the above Fig.10 The relevant description of the white circle ① in the figure will not be repeated here.

[0320] Radiator frequency change 32: The operating frequency of radiator C changes from 3.5Ghz to 5.0Ghz, which is farther from the operating frequency of radiator A. This change is reflected in Fig.13 The white circle ② in the middle. The frequency change 32 of the radiator can change the current of the radiator C from strong to weak. For the description of the change of the current strength of the radiator C, please refer to the above Fig.10 The relevant description of the white circle ② in the figure will not be repeated here.

[0321] What should be understood here is that Fig.12 as well as Fig.13 The operating frequency values ​​of the radiators shown in the figure are for illustration only, and other values ​​may be used in actual situations. For example, the operating frequency of the same radiator may be 1 GHz greater or less than the operating frequency. This shall not constitute a limitation on the embodiments of the present application.

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

[0323] Fig.14A schematic diagram of the frequency control circuit settings involved in a wifi single-state scenario and a low-performance scenario 12 is shown.

[0324] The following is based on Fig.14 Describe how to adjust Fig.13 The frequencies of the various radiators are shown in FIG.

[0325] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit involved here also describes the frequency adjustment of radiators C, E, D and F.

[0326] like Fig.14 As shown in (1), it is the frequency control circuit setting in the scenario where wifi and B41 coexist. For 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 modulation branch 422 is turned on. In this way, the radiator C is equivalent to connecting an inductor of about 1n, and the frequency is adjusted to a higher frequency, such as about 5.0Ghz. For 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 modulation branch 423 is turned on. In this way, the radiator E is equivalent to connecting an inductor of about 4.3n, and the frequency is adjusted to about 2.55Ghz. For 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 modulation branch 426 is turned on. In this way, the radiator D is equivalent to a lumped element connected with an inductor (about 0.6n) in series with a capacitor (about 1.5p), and the frequency is adjusted to about 2.0Ghz. Among them, the capacitor of about 1.5p is the sum of the capacitor of about 1p and the capacitor of about 0.4 included in the frequency modulation branch 426, 1.4p plus 0.1p (the disconnected switch unit S5 can be regarded as a 0.1p capacitor). For the radiator F, the electronic device closes (ON) the switch unit s7 and the switch unit s8 in the frequency control circuit 400f, so that the frequency modulation branch 427 and the frequency modulation branch 428 are both turned on. In this way, the radiator F is equivalent to a lumped element connected with a capacitor (about 2.4p) in parallel with an inductor (about 1n) and another capacitor (about 0.7p), and the frequency is adjusted to about 2.8Ghz.

[0327] like Fig.14As shown in (2), it is the frequency control circuit setting in low-performance scenario 12. For radiator C, the electronic device closes (ON) the switch unit s2 and the switch unit s1 in the frequency control circuit 400c, so that the frequency modulation branch 421 and the frequency modulation branch 422 are both turned on. In this way, the radiator C is equivalent to a lumped element after a capacitor (about 1.5p) and an inductor (about 1n) are connected in parallel, and the frequency is adjusted to a higher frequency band, such as about 5Ghz. For radiator E, the electronic device closes (ON) the switch unit s3 in the frequency control circuit 400e and opens (OFF) the switch unit s4, so that the frequency modulation branch 423 is turned on. In this way, the radiator E is equivalent to an inductor (more than 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 in the frequency control circuit 400d and opens (OFF) the switch unit s6, so that the frequency modulation 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 4.6Ghz. For the radiator F, the electronic device turns on (OFF) both the switch unit s7 and the switch unit s8 in the frequency control circuit 400f, so that the frequency modulation branch 429 is turned on. In this way, the radiator F is equivalent to a lumped element that is a capacitor (about 2.7p) connected in parallel with an inductor (about 1n) and then connected in series with another inductor (about 5n), and the frequency is adjusted to about 3Ghz.

[0328] The following describes the beneficial effects of the wifi and B41 coexistence scenario compared to the low performance scenario 12.

[0329] Fig.15 This is a comparison chart of the efficiency of antenna 2 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12 obtained when the electronic device was conducting a simulation effect test.

[0330] like Fig.15 As shown, the horizontal axis represents frequency, the unit is GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency), the unit is dB.

[0331] Fig.15 In the figure, the curve "Radiation Efficiency - Coexistence" and the curve "Radiation Efficiency - Scenario 12" respectively represent the radiation efficiency of antenna 2 when it is working in the wifi and B41 coexistence scenario and the low-performance scenario 12. At this time, the operating frequency of antenna 2 is 2.4Ghz. In the wifi and B41 coexistence scenario, the radiation efficiency of antenna 2 is about -2.7dB, and in the low-performance scenario 12, the radiation efficiency of antenna 2 is about -3.5dB. Compared with the low-performance scenario 12, in the coexistence state, the radiation efficiency of antenna 2 is improved by about 0.8dB.

[0332] Fig.15In the figure, the curves "System Efficiency - Coexistence" and "System Efficiency - Scenario 12" respectively represent the system efficiency of antenna 2 when it is working in the wifi and B41 coexistence scenario and the low-performance scenario 12. At this time, the operating frequency of antenna 2 is 2.4Ghz. In the wifi and B41 coexistence scenario, the system efficiency of antenna 2 is about -2.8dB, and in the low-performance scenario 12, the system efficiency of antenna 2 is about -3.6dB. Compared with the low-performance scenario 12, in the coexistence state, the system efficiency of antenna 2 is also improved by about 0.8dB.

[0333] Fig.16 This is a comparison chart of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained when the electronic device is undergoing simulation effect testing.

[0334] like Fig.16 As shown in (1), the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 12" respectively represent the radiation efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 12. The curve "system efficiency-coexistence state" and the curve "system efficiency-scenario 12" respectively represent the system efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario. At this time, the operating frequency of antenna 1 is 2.55Ghz. In the coexistence state scenario, the radiation efficiency and system efficiency of antenna 1 are both about -2.9dB, and in the low-performance scenario 12, the radiation efficiency and system efficiency of antenna 1 are both about -2.2dB. Compared with the low-performance scenario 12, the radiation efficiency of antenna 1 in the coexistence state of wifi and B41 is reduced by about 0.7dB.

[0335] like Fig.16 As shown in (2), the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (transmission efficiency) in dB. The smaller the transmission efficiency (the farther away from 0dB), the better the antenna's transmission efficiency and the better the antenna's performance. When the transmission efficiency value is less than -6dB, it means that the antenna's transmission efficiency is good, and when it is greater than -6dB, it means that the antenna's transmission efficiency is poor. Fig.16 As shown in (2), the curve "transmission efficiency - coexistence state" and the curve "transmission efficiency - scenario 12" respectively represent the transmission efficiency of the antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 12. The transmission efficiency indicated by point K11 is smaller than the transmission efficiency indicated by K12, so the transmission efficiency of the antenna 1 in the coexistence state is slightly worse than that in the low-performance scenario 12.

[0336] Combination Fig.15 as well as Fig.16It can be seen that although the performance of antenna 1 has declined, the radiation efficiency and system efficiency of antenna 1 are at -2.9dB, and the transmission efficiency is below -6dB, which means that although the performance of antenna 1 has declined, it is still good. And the performance of antenna 2 has been improved. It can be understood that while the performance of antenna 2 is improved, the performance of antenna 1 is also balanced.

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

[0338] Fig.17 An example diagram of a second antenna structure is shown.

[0339] like Fig.17 As shown in (1), in the second antenna structure, the arrangement of each radiator is a linear arrangement, and each radiator is placed on the frame 1 of the electronic device, and the frame 1 can be a horizontal frame or a vertical frame. Among them, radiator E, radiator C, radiator A and radiator G are all arranged on the frame 1 of the first device body 100. Radiator F, radiator D, radiator B and radiator H are all arranged on the frame 1 of the second device body 200.

[0340] In the second antenna structure, the radiator A-radiator D meets the aforementioned fixed settings. For the relevant description of the fixed settings, please refer to the aforementioned content and will not be repeated here. Except for the arrangement of the radiator E, radiator F, radiator G and radiator H, which are different from the radiators corresponding to the first antenna structure, the other settings are the same or similar. Please refer to the description of radiator E-radiator H in the first antenna structure, which will not be repeated here.

[0341] Antenna 2 is coupled with antenna 1 and antenna 3 respectively. The coupling form of antenna 2 and antenna 1 includes: radiator C is coupled with radiator E through slot 105e, and the open end 103c of radiator C is arranged opposite to the open end 103e of radiator E. Radiator D is coupled with radiator F through slot 105f, and the open end 203d of radiator D is arranged opposite to the open end 203f of radiator F. There is no relationship between the length of slot 105e and the slot 105c mentioned above. Slot 105e and slot 105c can be of equal length, or one of them can be longer than the other. There is no relationship between the length of slot 105d and the slot 105f mentioned above. Slot 105d and slot 105f can be of equal length, or one of them can be longer than the other.

[0342] The coupling form of antenna 2 and antenna 3 includes: radiator A is coupled to radiator G through slot 105g, and the open end 103g of radiator G is arranged opposite to the open end 103a of radiator A. Radiator B is coupled to radiator H through slot 105h, and the open end 203b of radiator B is arranged opposite to the open end 203h of radiator H. There is no relationship between the length of slot 105h and the slot 105b mentioned above. Slot 105h and slot 105b can be of equal length, or one of them can be longer than the other. Slot 105g is not related to the length of slot 105a mentioned above. Slot 105g and slot 105a can be of equal length, or one of them can be longer than the other.

[0343] When antenna 2 is coupled with antenna 1 and antenna 3, antenna 2 can share radiator C, radiator D and radiator F with antenna 1. Antenna 2 can share radiator B and radiator H with antenna 1. That is, antenna 2 can be said to include radiators A-D, radiators H and radiator F. Antenna 1 includes radiator E, radiator F, radiator C and radiator D. Antenna 3 includes radiator G, radiator H and radiator B.

[0344] like Fig.17 As shown in (2), the electronic device may further include a frequency control circuit 500c, a frequency control circuit 500e, a frequency control circuit 500d and a frequency control circuit 500f.

[0345] 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 switch device 510c and a plurality of frequency modulation branches C2 arranged in parallel. The switch device 510c is used to select at least one frequency modulation branch C2, thereby adjusting the frequency of the radiator C. The switch device 510c may include at least one switch unit. The switch device 510c may select at least one frequency modulation branch C2 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches C2 may include a frequency modulation branch 521 and a frequency modulation branch 522. The frequency modulation branch 521 is connected to the switch unit w1, and the switch unit w1 is used to control whether the frequency modulation branch 521 is turned on. The frequency modulation branch 522 is connected to the switch unit w2, and the switch unit w2 is used to control whether the frequency modulation branch 522 is turned on. When the switch device 510c controls the switch unit w1 to be closed (ON) and controls the switch unit w2 to be opened (OFF), it means that the switch device 510c selects the connection of the frequency modulation branch 521 and does not select the connection of the frequency modulation branch 522. Other selection conditions of the switch device 510c can refer to the above description and will not be repeated here.

[0346] In some possible cases, the connection point 106 c is disposed at a position close to the open end 103 e 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 switch device 510e and a plurality of frequency modulation branches E2 arranged in parallel. The switch device 510e is used to select at least one frequency modulation branch E2, thereby adjusting the frequency of the radiator E. The switch device 510e may include at least one switch unit. The switch device 510e may select at least one frequency modulation branch E2 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches E2 may include a frequency modulation branch 523 and a frequency modulation branch 524. Among them, the frequency modulation branch 523 is connected to the switch unit w3, and the switch unit w3 is used to control whether the frequency modulation branch 523 is turned on. The frequency modulation branch 524 is connected to the switch unit w4, and the switch unit w4 is used to control whether the frequency modulation branch 524 is turned on. The gating condition of the switch device 510e can refer to the above description and will not be repeated here.

[0348] In some possible cases, the feeding point 104e is arranged close to the opening 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 switch device 510d and a plurality of frequency modulation branches D2 arranged in parallel. The switch device 510d is used to select at least one frequency modulation branch D2, thereby adjusting the frequency of the radiator D. The switch device 510d may include at least one switch unit. The switch device 510d may select at least one frequency modulation branch D2 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches D2 may include a frequency modulation branch 525 and a frequency modulation branch 526. The frequency modulation branch 525 is connected to the switch unit w5, and the switch unit w5 is used to control whether the frequency modulation branch 525 is turned on. The frequency modulation branch 526 is connected to the switch unit w6, and the switch unit w6 is used to control whether the frequency modulation branch 526 is turned on. The gating condition of the switch device 510d can refer to the above description and will not be repeated here.

[0350] In some possible cases, the connection point 106d is disposed at a position 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 body 200 through the frequency control circuit 500f. The frequency control circuit 500f includes a switch device 510f and a plurality of frequency modulation branches C2 arranged in parallel. The switch device 510f is used to select at least one frequency modulation branch C2, thereby adjusting the frequency of the radiator F. The switch device 510f may include at least one switch unit. The switch device 510f may select at least one frequency modulation branch C2 by switching the closing (ON) and opening (OFF) of the switch unit. For example, the plurality of frequency modulation branches C2 may include a frequency modulation branch 527 and a frequency modulation branch 528. Among them, the frequency modulation branch 527 is connected to the switch unit w7, and the switch unit w7 is used to control whether the frequency modulation branch 527 is turned on. The frequency modulation branch 528 is connected to the switch unit w8, and the switch unit w8 is used to control whether the frequency modulation branch 528 is turned on. The gating condition of the switch device 510f can refer to the above description and will not be repeated here.

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

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

[0354] Fig.18 An exemplary arrangement of the first antenna structure in an electronic device is shown.

[0355] like Fig.18 As shown, radiators G, A, C, and E are placed on a horizontal frame of the first device body 100 of the electronic device.

[0356] The radiator H, the radiator B, the radiator D and the radiator F are disposed on a horizontal frame of the second device body 200 of the electronic device.

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

[0358] When the antenna structure is the second antenna structure, the operating frequency band (frequency range) of antenna 1-antenna 3 and the communication mode provided by each antenna for the electronic device can be the same as the first antenna structure. For details, please refer to the description of the above related content, which will not be repeated here.

[0359] However, when the operating frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 12, the following low-performance scenario may occur: when the performance of the antenna (antenna A) responsible for providing communication mode A is low, it will cause the folding screen electronic device to have poor communication capabilities when communicating with other electronic devices using the communication mode A. The following examples illustrate 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 modulation rule 12, as well as solutions for the low-performance scenarios. Among them, the preset frequency modulation rule 12 may include the frequency modulation rules 12a and frequency modulation rules 12b involved below. For the relevant description of frequency modulation rules 12a and 12b, please refer to the following content. For example, the preset frequency modulation rule 12a may refer to the following for Fig.21 The preset frequency modulation rule 12b can refer to the following description of Fig. 27 Description of the relevant content in .

[0360] Low performance scenario 21:

[0361] When the operating frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 12a, when the electronic device is in the wifi single mode, the performance of antenna 2 is low when operating in the wifi 2.4G frequency band, resulting in poor communication capability of the electronic device when communicating with other electronic devices in the wifi single mode. For the relevant description of the wifi single mode, please refer to the above content and will not be repeated here.

[0362] The reason why antenna 2 has low performance when operating in the wifi 2.4G band in low performance scenario 21 can be found in the following Fig.21 The description is not repeated here.

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

[0364] For low-performance scenario 21, based on the second antenna structure in the present application, when the electronic device is in the wifi single state, the working frequency of the antenna 2 and the antenna 1 coupled thereto can be readjusted according to the preset frequency modulation rule 22a, so that the current direction of the antenna 1 and each radiator in the antenna 2 is adjusted to the target current direction (recorded as the target current direction 21), and the target current direction 21 is the current direction that satisfies the wifi single state when the second antenna structure is adopted. The antenna 1 and each radiator in the antenna 2 can be used to provide a 2.4G wifi communication mode, so that the performance of the antenna 2 is improved, and then the communication capability of the electronic device when communicating with other electronic devices in the 2.4G wifi communication mode is improved. Among them, the antenna 1 is an antenna responsible for providing cellular network communication. Because the electronic device in the low-performance scenario 21 does not turn on the communication mode that the antenna 1 is responsible for, the working frequency of the antenna 1 can be adjusted to use the antenna 1 to assist the antenna 2 in improving performance. The reason for generating the target current direction here can refer to the aforementioned description of generating the target current direction, which will not be repeated here.

[0365] Fig.19A A comparison diagram of current directions in a wifi single-state scenario and a low-performance scenario 21 is shown in FIG.

[0366] Fig.19B An exemplary current distribution simulation diagram when the electronic device is in the wifi single mode is shown.

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

[0368] Fig.19A (1) shows a schematic diagram of a target current direction 21.

[0369] refer to Fig.19A In (1), it is shown that when the working frequency of antenna 2 and antenna 1 coupled thereto are readjusted according to preset frequency modulation rule 22a, the expected current direction (target current direction 21) of each radiator in antenna 1 and antenna 2 is shown. When the electronic device is in wifi single mode, antenna 2 is responsible for providing 2.4G wifi communication mode for the electronic device, and radiator A is the main radiator. Radiator H, radiator B, radiator D, radiator F, radiator C and radiator E are parasitic radiators. Among them, based on the above content, radiator H, radiator B, radiator D, radiator F, radiator C and radiator E are all first-class radiators, and the expected current direction generated by them is the same as that of radiator A.

[0370] It should be understood that the current direction of radiator A (main radiator) is taken as Figure 5AThe direction shown in (1) is used as an example for explanation. In actual situations, the current direction of the radiator A can also be Figure 5A The direction shown in (1) is opposite to that shown in (1). The present application does not limit this.

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

[0372] Combine the following Fig.19A (2) and the above Fig.19A (1) describes in detail the reason why the performance of antenna 2 is improved when the electronic device is in the wifi single mode after using the frequency modulation rules involved in this application.

[0373] refer to Fig.19A In (2), in the low performance scenario 21, the reasons leading to the low performance of antenna 2 include but are not limited to the following reasons.

[0374] Reason 21-1 for low performance: Radiators F, D, E and C are first-class radiators, but the current they generate is opposite to the current of radiator A. The parasitic resonance they generate will have an adverse effect on radiator A, resulting in reduced performance of antenna 2.

[0375] Combination Fig.19A (1) and Fig.19A As can be seen from (2), for the low performance reason 21-1, there is a first change: the current generated by radiators F, D, E, and C changes from being in the opposite direction to radiator A (main radiator) to being in the same direction, which can improve the performance of antenna 2. The first change for the low performance reason 21-1 is reflected in Fig.19A In the white circle①.

[0376] like Fig.19B As shown, it is an exemplary current distribution simulation diagram when the electronic device is in the wifi single state, which is similar to Fig.19A The current direction of radiator B-radiator E is the same as that of radiator A.

[0377] Next, the preset frequency modulation rule 22 a involved in adjusting the target current direction 21 is described.

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

[0379] The preset frequency modulation rule 22a may include: for the second antenna structure, when the electronic device is in the wifi single state, the operating frequency (recorded as operating frequency A) of radiator A (main radiator) is adjusted to belong to the wifi2.4G frequency band (recorded as frequency band A), for example, the operating frequency A may be 2.4Ghz. The operating frequency of radiator C is adjusted to be less than and close to the operating frequency A. The electrical length of radiator B is set to be greater than the preset length value 1, and the electrical length of radiator H is set to be greater than the preset length value 1 so that radiator B and radiator H can be regarded as a parasitic radiator with radiator B as the main body, and the frequency of radiator H can be regarded as the same as the frequency of radiator B. And the operating frequency of radiator B is adjusted to be greater than and close to the operating frequency A. The operating frequency of radiator D is adjusted to be greater than and close to the operating frequency A. The operating frequency of radiator E is adjusted to be greater than and close to the operating frequency A. The operating frequency of radiator F is greater than and close to the operating frequency A.

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

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

[0382] It should be understood that the above description is that radiator C, radiator D, radiator B, radiator H, radiator E and radiator F are all used as parasitic radiators of radiator A (main radiator). By adjusting the operating frequency of each parasitic radiator, a suitable parasitic resonance is generated after the main radiator resonates to improve the performance of antenna 2. In actual situations, more or fewer parasitic radiators than those involved in the above can be used to generate parasitic resonance to improve the performance of antenna 2. For example, in other possible cases, only radiators C, radiator D and radiator B can be used as parasitic radiators of radiator A (main radiator), and suitable parasitic resonance is generated after the main radiator resonates to improve the performance of antenna 2. At this time, the preset frequency modulation rule 21a may include: the operating frequency of radiator A (main radiator) (recorded as operating frequency A) belongs to the wifi2.4G frequency band (recorded as frequency band A), for example, the operating frequency A can be 2.4Ghz. The operating frequency of radiator C is less than and close to the operating frequency A. Based on the foregoing, at this time, the working frequencies of radiator C, radiator D, radiator B and radiator A (main radiator) from low to high may be: radiator C, radiator A (main radiator), radiator D, radiator B.

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

[0384] Fig. 20 This is an effect curve diagram of the S parameters of antenna 1 and antenna 2 in a wifi single-state scenario obtained when the electronic device is performing a simulation effect test. The horizontal axis represents the frequency in Ghz, and the vertical axis represents the amplitude value of S11 in dB.

[0385] Fig. 20 There are two curves in it: the curve "antenna 2-wifi single mode" is referred to as curve Q11, and the curve "antenna 1-wifi single mode" is referred to as curve Q12. Curve Q11 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in the wifi single mode scenario. Curve Q12 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in the wifi single mode scenario.

[0386] Fig. 20 The letters AF in the figure represent radiator A to radiator F respectively. Fig. 20 It can be seen that the radiators involved in the wifi single-state scenario from low to high frequency can be: radiator C (about 2.1Ghz), radiator A (about 2.4Ghz), radiator D (about 2.6Ghz), radiator B and radiator H (about 2.8Ghz), radiator E (about 2.9Ghz), radiator F (about 3.4Ghz). It is consistent with the above description of the preset frequency modulation rule 22a. Fig. 20 The frequency relationship of each radiator shown in FIG. 1 can make the desired current direction of each radiator in antenna 1 and antenna 2 the target current direction 21. For the description of the target current direction 21, please refer to the aforementioned Fig.19A The description of (1) will not be repeated here.

[0387] It should be understood here that Fig. 20 As shown, the reason for adjusting the frequencies of radiators D and B closer to radiator A (main radiator) compared with radiator E and radiator F is that the radiator with fixed settings can better exert positive parasitic radiation on radiator A. Radiators B and D are closer to radiator A than radiators E and radiator F, and are more likely to exert positive parasitic radiation on radiator A.

[0388] It should also be understood here that in a wifi single-state scenario, antenna 1 and antenna 2 can share radiator D, radiator F and radiator C. Fig. 20 The radiation D and the radiator F are attributed to the antenna 1 for example. In actual situations, the radiation D and the radiator F can also be attributed to the antenna 2 for example, and this embodiment of the application does not limit this.

[0389] Fig.21 A schematic diagram comparing frequency modulation rules in a wifi single-state scenario and a low-performance scenario 21 is shown.

[0390] Fig.21 The following is a comparison curve of the S parameters of antenna 1 and antenna 2 in the wifi single-state scenario and the low-performance scenario 11 obtained when the electronic device is tested for simulation effect. The horizontal axis represents the frequency in Ghz, and the vertical axis represents the amplitude value of S11 in dB.

[0391] Fig.21 It includes 4 curves: the curve "antenna 2-wifi single state" is referred to as curve Q11, the curve "antenna 1-wifi single state" is referred to as curve Q12, the curve "antenna 2-scene 21" is referred to as curve Q13, and the curve "antenna 1-scene 21" is referred to as curve Q14. Among them, curve Q13 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 21. Curve Q14 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 21. The relevant descriptions of curves Q11 and Q12 are the same as those mentioned above. Figure 6 The curve Q11 and the curve Q12 and their related contents are the same and will not be repeated here.

[0392] What should be understood here is that Fig.21The curve Q13 and the curve Q14 shown in FIG. 2 are one case in the low performance scenario 21. In this case, in the low performance scenario 21, when the operating frequency of the antenna 1 is the medium-high frequency B3 band (abbreviated as MHBB3), the performance of the antenna 2 is the best compared to when the operating frequency of the antenna 1 is other frequency bands.

[0393] Fig.21 The letters AF in the figure represent radiator A to radiator F respectively. Fig.21 It can be seen that the radiators involved in the low-performance scenario 21 from low to high frequency can be: radiator E (about 1.7Ghz), radiator D and radiator F (about 2.1Ghz), radiator C (about 2.2Ghz), radiator A (about 2.4Ghz), radiator B and radiator H (about 2.8Ghz). It is consistent with the above description of the preset frequency modulation rule 12a, which can be understood as an example of the above-mentioned frequency modulation rule 12a. Fig.21 The frequency relationship of each radiator shown in curve Q13 and curve Q14 can make the current direction of each radiator in antenna 1 and antenna 2 the current direction in the low performance scenario 21 mentioned above. For the current direction in the low performance scenario 21, please refer to the above Fig.19A The description of (2) will not be repeated here.

[0394] Compared with the working frequency of each radiator determined by the preset frequency modulation rule 21a, it can be known that the working frequency of at least one radiator in the wifi single state scenario has changed compared with the low performance scenario 21. For example, including but not limited to the following changes.

[0395] Radiator frequency change 21: The operating frequency of radiators E, D, and F changes from higher than radiator A (main radiator) to lower than radiator A. This change is reflected in Fig.21 In the white circle①.

[0396] The radiator frequency change 21 can change the current direction of radiators E, D and F from being opposite to radiator A to being in the same direction as radiator A. For the description of the change of the current direction of radiators E, D and F, please refer to the above Fig.19A The relevant description of the white circle ① in the figure will not be repeated here.

[0397] What should be understood here is that Fig. 20 as well as Fig.21 The operating frequency values ​​of the radiators shown in the figure are for illustration only, and other values ​​may be used in actual situations. For example, the operating frequency of the same radiator may be 1 GHz greater or less than the operating frequency. This shall not constitute a limitation on the embodiments of the present application.

[0398] The following describes the process of adjusting the frequency of each radiator by at least one frequency control circuit in the wifi single-state scenario in combination with the preset frequency modulation rule 22a so that the desired current direction generated by each radiator conforms to the target current direction 21. At the same time, the difference between the adjustment process and the low-performance scenario is compared.

[0399] Fig. 22 A schematic diagram of the frequency control circuit settings involved in a wifi single-state scenario and a low-performance scenario 21 is shown.

[0400] The following is based on Fig. 22 Describe how to adjust Fig.21 The frequencies of the various radiators are shown in FIG.

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

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

[0403] like Fig. 22 As shown in (1), it is the frequency control circuit setting in the wifi single-state scenario. For 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 modulation 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 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 modulation 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 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 modulation 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 turns on the switch unit w8 in the frequency control circuit 500f and turns off w7, so that the frequency modulation branch 528 is turned on. In this way, the radiator F is equivalently connected to an inductor of about 0.6n, and the frequency is adjusted to about 3.4Ghz.

[0404] like Fig. 22As shown in (2), it is the frequency control circuit setting in the low performance scenario 12. For the radiator C, the control method of the frequency control circuit 500c connected thereto is the same as that described above. Fig. 22 The same as (1). At this time, the frequency of radiator C is adjusted to about 2.2Ghz. For radiator E, the electronic device turns on (OFF) both the switch unit w4 and the switch unit w3 in the frequency control circuit 500e, so that the frequency modulation branch 524 and the frequency modulation branch 525 are not turned on. In this way, radiator E is equivalent to connecting a 0 ohm resistor to ground, and the frequency is adjusted to about 1.7Ghz. For radiator D, the electronic device turns on (ON) the switch unit w6 in the frequency control circuit 500d and turns on (OFF) w5, so that the frequency modulation branch 526 is turned on. In this way, radiator D is equivalent to connecting an inductor of about 0.6n, and the frequency is adjusted to about 2.1Ghz. For radiator F, the electronic device turns on (ON) the switch unit w7 in the frequency control circuit 500f and turns on (OFF) w8, so that the frequency modulation branch 527 is turned on. In this way, radiator F is equivalent to connecting an inductor of about 5n, and the frequency is adjusted to about 2.1Ghz.

[0405] The following describes the beneficial effects of the wifi single-state scenario compared to the low-performance scenario 21.

[0406] Fig.23 This is a comparison chart of the radiation efficiency and system efficiency of antenna 2 in the WiFi single-state scenario and the low-performance scenario 21 obtained when the electronic device is performing a simulation effect test.

[0407] like Fig.23 As shown, the horizontal axis represents frequency, the unit is GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency), the unit is dB.

[0408] Fig.23 In the figure, the curve "Radiation Efficiency - Wi-Fi Single Mode" and the curve "Radiation Efficiency - Scenario 21" respectively represent the radiation efficiency of antenna 2 when working in the Wi-Fi single mode scenario and the low performance scenario. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the Wi-Fi single mode scenario, the radiation efficiency of antenna 2 is about -4.6 dB, and in the low performance scenario 21, the radiation efficiency of antenna 2 is about -5.6 dB. Compared with the low performance scenario 21, in the Wi-Fi single mode, the radiation efficiency of antenna 2 is improved by about 1 dB.

[0409] Fig.23In the figure, the curve "System Efficiency - Wi-Fi Single Mode" and the curve "System Efficiency - Scenario 21" respectively represent the system efficiency of antenna 2 in the Wi-Fi single mode scenario and the low performance scenario. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the Wi-Fi single mode scenario, the system efficiency of antenna 2 is about -4.4 dB, and in the low performance scenario 21, the system efficiency of antenna 2 is about -5.4 dB. Compared with the low performance scenario 21, in the Wi-Fi single mode, the system efficiency of antenna 2 is also improved by 1 dB.

[0410] Low performance scenario 22:

[0411] When the working frequencies of antenna 1-antenna 3 are adjusted according to the preset frequency modulation rule 12b, when the electronic device is in the coexistence state of wifi and B41, antenna 1 is responsible for providing cellular network communication (in the B41 frequency band), and antenna 2 is responsible for providing 2.4G wifi communication. Although the performance of antenna 1 is better at this time, the performance of antenna 2 is low when working in the wifi 2.4G frequency band, resulting in poor communication capability of the electronic device when communicating with other electronic devices based on the 2.4G wifi communication method in the coexistence state of wifi and B41. Among them, the relevant explanation about the coexistence state of wifi and B41 can be referred to the above content, which will not be repeated here.

[0412] The reason why antenna 2 has low performance when operating in the wifi 2.4G band in low performance scenario 22 can be found in the following Fig. 27 The description is not repeated here.

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

[0414] For low-performance scenario 22, based on the second antenna structure in the present application, when the electronic device is in a coexistence state of wifi and B41, the operating frequency of each radiator in antenna 2 and antenna 1 coupled thereto can be readjusted according to the preset frequency modulation rule 22b, so that the current direction of each radiator in antenna 1 and antenna 2 is adjusted to the target current direction (recorded as target current direction 22), and the target current direction 22 is the current direction that satisfies the coexistence state of wifi and B41 when the second antenna structure is adopted. The electronic device can change the operating frequency of some radiators responsible for providing cellular network communication (in the B41 frequency band) so that the resonance generated is used to provide 2.4Gwifi communication mode, or the electronic device can change the operating frequency of some radiators responsible for providing cellular network communication (in the B41 frequency band) so that the resonance generated does not have an adverse effect on the 2.4Gwifi communication mode. The reason for generating the target current direction 22 here can refer to the aforementioned description of generating the target current direction, which will not be repeated here.

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

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

[0417] refer to Fig.24 (1) shows the desired current direction (target current direction 22) of each radiator in antenna 1 and antenna 2 when the operating frequencies of antenna 2 and antenna 1 are readjusted according to the preset frequency modulation rule 22b.

[0418] Among them, antenna 1 is mainly responsible for providing cellular network communication (in the B41 frequency band) for electronic devices. At this time, radiator E is the main radiator. The parasitic radiator of radiator E mainly includes radiator C. Radiator C is a first-class radiator, and the desired current direction generated by it is the same as that of radiator E.

[0419] Antenna 2 is mainly responsible for providing 2.4G wifi communication for electronic devices. At this time, radiator A is the main radiator. The parasitic radiators of radiator A mainly include radiator B, radiator H, radiator D, and radiator F. Radiators B, radiator H, radiator D, and radiator F are first-class radiators, and the expected current direction generated by them is the same as that of radiator A.

[0420] In some possible cases, the desired current directions of the radiator E (main radiator) and the radiator A (main radiator) are opposite.

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

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

[0423] It should also be understood that the current directions of radiator A (main radiator) and radiator E (main radiator) are taken as the Fig.24 In actual situations, the current directions of the radiator A and the radiator E can also be different from Fig.24 The direction shown in (1) is opposite to that shown in (1). The present application does not limit this.

[0424] Fig.24 (2) shows the current direction in the low performance scenario 22.

[0425] Combine the following Fig.24 (2) and the above Fig.24 (1) describes in detail the reason why the performance of antenna 2 is improved when the electronic device is in a wifi and B41 coexistence state after using the frequency modulation rules involved in this application.

[0426] refer to Fig.24 In (2), in the low performance scenario 22, the reasons leading to the low performance of antenna 2 include but are not limited to the following reasons.

[0427] Reason 22-1 for low performance: Radiator D and radiator H are parasitic radiators of radiator A (main radiator) and are first-class radiators, but the currents of radiator D and radiator H are in the same direction as the current of radiator A. The resonance generated when the currents of radiator D and radiator H are in the same direction as the current of radiator A has an adverse effect on radiator A, resulting in low performance of antenna 2.

[0428] Combination Fig.24 (1) and Fig.24 As can be seen from (2), for the low performance reason 22-1, there is a first change: changing the current of radiator D and radiator H from being opposite to the current of radiator A to being in the same direction can improve the performance of antenna 2. The first change for the low performance reason 22-1 is reflected in Fig.24 In the white circle①.

[0429] Fig.25 An exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi 2.4G frequency band when the electronic device is in a wifi and B41 coexistence scenario is shown.

[0430] like Fig.25 As shown in (1), it is a simulation diagram of the current distribution of each radiator mainly responsible for the wifi2.4G frequency band when the electronic device is in the coexistence state of wifi and B41. Fig.24The current direction of each radiator corresponds to the target current direction 22 shown in (1). At this time, radiator A is the main radiator, and the parasitic radiators may include radiators D, radiator F, radiator B and radiator H. The current direction of each parasitic radiator is the same as the current direction of radiator A.

[0431] like Fig.25 As shown in (2), it is a current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G band in the electronic device in the low performance scenario 22. At this time, the current direction of radiator D and radiator F is the same as the current direction of radiator A, which will cause the performance of antenna 2 (including radiator A) to be reduced.

[0432] Next, the preset frequency modulation rule 22 b involved in adjusting the target current direction 22 is described.

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

[0434] The preset frequency modulation rule 22b may include: for the second antenna structure, when the electronic device is in the coexistence state of wifi and B41, the operating frequency (recorded as operating frequency A) of radiator A (main radiator) is adjusted to belong to the wifi2.4G frequency band (recorded as frequency band A), for example, the operating frequency A may be 2.4Ghz. The operating frequency of radiator D is greater than and close to the operating frequency A. The electrical length of radiator B is set to be greater than the preset length value 1, and the electrical length of radiator H is set to be greater than the preset length value 1 so that radiator B and radiator H can be regarded as a parasitic radiator with radiator B as the main body, and the frequency of radiator H can be regarded as the same as the frequency of radiator B. The operating frequency of radiator B is adjusted to be greater than and close to the operating frequency A.

[0435] In some possible cases, the operating frequency of the parasitic radiator (main) that is closer to radiator A (main radiator) can be set closer to the operating frequency A. Since the distances from the radiators from near to far can be radiator D, radiator B, radiator E, and radiator F, the radiators involved in the 2.4G wifi communication mode in the wifi and B41 coexistence scenario can be: radiator A, radiator D, radiator B, radiator H, and radiator F in order from low to high.

[0436] The operating frequency (referred to as operating frequency E) of radiator E (main radiator) is adjusted to belong to the B41 frequency band. For example, the operating frequency E may be 2.55 GHz. The operating frequency of radiator C is greater than the operating frequency E and is close to the operating frequency E, so that the desired current generated by radiator C is in the same direction as that of radiator E. In the scenario where wifi and B41 coexist, the radiators responsible for providing the cellular network (in the B41 frequency band) communication mode may be: radiator E, radiator C, in order from low to high.

[0437] In some possible cases, radiator C has a high coupling with radiator A (main radiator) but the desired current direction it generates is opposite to that of radiator A, and its corresponding operating frequency can be adjusted to be higher to avoid adverse effects on radiator A. For example, the operating frequency of radiator D is set to be higher than the operating frequencies of other radiators except radiator F. Radiator F has a high coupling with radiator E (main radiator) but the desired current direction it generates is opposite to that of radiator A, and radiator F is far away from radiator A, so the operating frequency of radiator F can be set to the highest to reduce the impact on the two radiators.

[0438] In combination with the above content, in some possible cases, the radiators involved in the wifi and B41 coexistence scenario when the working frequency is from low to high can be: radiator A, radiator E, radiator D, radiator B and radiator H, radiator C, radiator F.

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

[0440] Fig.26 This is an effect curve diagram of the S parameters of antenna 1 and antenna 2 in the wifi and B41 coexistence scenario obtained when the electronic device is performing a simulation effect test.

[0441] Fig.26 There are two curves in it: the curve "antenna 2-coexistence state" is referred to as curve Q41, and the curve "antenna 1-coexistence state" is referred to as curve Q42. Among them, curve Q41 shows the frequency high and low relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in the scenario of wifi and B41 coexistence state. Curve Q42 shows the frequency high and low relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in the scenario of wifi and B41 coexistence state.

[0442] Fig.26 The letters AF in the figure represent radiator A to radiator F respectively. Fig.26It can be seen that in some possible cases, in the scenario where wifi and B41 coexist, the frequencies of the radiators mainly responsible for the wifi 2.4G band can be, from low to high, radiator A (about 2.4Ghz), radiator D (about 2.7Ghz), radiator B and radiator H (about 2.8Ghz), and radiator F. Among them, Fig.26 The frequency of the radiator F is not shown in FIG. 1 , and it can be understood that the frequency of the radiator F is higher in Fig.26 Not shown in the figure, the radiator F and the radiator D can be regarded as a radiator with the radiator D as the main radiator, and the current direction of the radiator F is the same as that of the radiator D.

[0443] The frequencies of the radiators mainly responsible for the wifi 2.4G frequency band may be, from low to high, radiator E (approximately 2.55Ghz) and radiator C (approximately 3.8Ghz).

[0444] The operating 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] Fig.26 The frequency relationship of each radiator shown in FIG. 2 is consistent with the aforementioned description of the preset frequency modulation rule 22b. The desired current direction of each radiator in antenna 1 and antenna 2 can be made the target current direction 22. For the description of the target current direction 22, please refer to the aforementioned description of the preset frequency modulation rule 22b. Fig.24 The description of (1) will not be repeated here.

[0446] It should be understood here that in a wifi single-state scenario, antenna 1 and antenna 2 can share the radiator D. Fig.26 The radiation D is attributed to antenna 1 for example. In actual situations, the radiation D may also be attributed to antenna 2 for example, which is not limited in the embodiments of the present application.

[0447] Fig. 27 A schematic diagram comparing frequency modulation rules in a wifi and B41 coexistence scenario and a low-performance scenario 22 is shown.

[0448] Fig. 27 This is a comparison curve of the S parameters of antenna 1 and antenna 2 in the Wi-Fi and D41 coexistence scenario and the low-performance scenario 22 obtained when the electronic device is undergoing simulation effect testing.

[0449] Fig. 27The graph includes four curves: the curve "antenna 2-coexistence state" is referred to as curve Q41, the curve "antenna 1-coexistence state" is referred to as curve Q42, the curve "antenna 2-scenario 22" is referred to as curve Q43, and the curve "antenna 1-scenario 22" is referred to as curve Q44. Curve Q43 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 22. Curve Q44 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 11. The relevant descriptions of curves Q41 and Q42 are the same as those mentioned above. Fig.26 The curve Q41 and the curve Q42 and their related contents are the same and will not be repeated here.

[0450] What should be understood here is that Fig. 27 The curve Q43 and the curve Q44 shown in FIG. 2 are one case in the low performance scenario 22. In this case, in the low performance scenario 22, the operating frequency of the antenna 1 is the medium-high frequency B41 band (abbreviated as MHBB41).

[0451] Fig. 27 The letters AF in the figure represent radiator A to radiator F respectively. Fig. 27 It can be seen that in low-performance scenario 22, the radiators mainly responsible for the wifi2.4G frequency band include radiator A (main radiator) and the main parasitic radiators of radiator A, including radiator B and radiator H. The radiators mainly responsible for the B41 frequency band include radiator E (main radiator) and the main parasitic radiators of radiator E, including radiator F, radiator C, and radiator D.

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

[0453] The frequencies of the radiators mainly responsible for the wifi 2.4G band can be, from low to high, radiator E (about 2.6Ghz), radiator F (about 3.1Ghz), radiator C (about 3.8Ghz), and radiator D. Among them, Fig. 27 The frequency of the radiator D is not shown in FIG. 1 , and it can be understood that the frequency of the radiator D is higher in Fig. 27 Not shown in the figure, the radiator D and the radiator F can be regarded as a radiator with the radiator F as the main radiator, and the current direction of the radiator D is the same as that of the radiator F.

[0454] The frequency relationship of each radiator shown in curve Q43 and curve Q44 conforms to the aforementioned 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 antenna 1 and antenna 2 is the current direction in the low performance scenario 22 mentioned above. For the current direction in the low performance scenario 22, please refer to the aforementioned description of the preset frequency modulation rule 12b. Fig.24 The description of (2) will not be repeated here.

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

[0456] Radiator frequency changes 51: The operating frequency of radiator D changes from a higher frequency to a frequency of 2.7, and the frequency of radiator F changes from 3.1Ghz to a higher frequency. This change is reflected in Fig. 27 The white circle ① in the middle. The radiator frequency change 51 can change the radiator D and radiator F from being dominated by radiator F to being dominated by radiator D. When radiator F is dominant, the current generated by radiator F and radiator D is in the same direction as radiator E (main radiator), and therefore in the opposite direction to radiator A. When radiator D is dominant, the current generated by radiator D and radiator F is in the same direction as radiator A (main radiator). For the relevant description of the change in the current direction of radiator D and radiator F, please refer to the aforementioned Fig.24 The relevant description of the white circle ① in the figure will not be repeated here.

[0457] What should be understood here is that Fig.26 as well as Fig. 27 The operating frequency values ​​of the radiators shown in the figure are for illustration only, and other values ​​may be used in actual situations. For example, the operating frequency of the same radiator may be 1 GHz greater or less than the operating frequency. This shall not constitute a limitation on the embodiments of the present application.

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

[0459] Fig.28 A schematic diagram of the frequency control circuit settings involved in the wifi and B41 coexistence scenario and the low performance scenario 22 is shown.

[0460] The following is based on Fig.28 Describe how to adjust Fig. 27 The frequencies of the various radiators are shown in FIG.

[0461] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit involved here also describes the frequency adjustment of radiators C, E, D and F.

[0462] like Fig.28 As shown in (1), it is the frequency control circuit setting in the scenario where wifi and B41 coexist. For radiator C, the electronic device closes (ON) the switch unit w2 in the frequency control circuit 500c and opens (OFF) w1, so that the frequency modulation branch 521 is turned on. In this way, the radiator C is equivalent to connecting an inductor of about 5n, and the frequency is adjusted to about 3.8Ghz. For 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 modulation 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 2.55Ghz. For 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 modulation 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 2.7Ghz. For the radiator F, the electronic device turns on the switch unit w8 in the frequency control circuit 500f and turns off w7, so that the frequency modulation branch 528 is turned on. In this way, the radiator F is equivalently connected to an inductor of about 0.6n, and the frequency is adjusted to a higher frequency.

[0463] like Fig.28 As shown in (2), it is the frequency control circuit setting in the low performance scenario 22. Among them, the frequencies of radiators D and radiators F are not changed compared with the wifi and B41 coexistence scenario, and the control method of the frequency control circuit 500c connected to them is the same as the above Fig.28 (1) is the same and will not be repeated here. For radiator D, the electronic device closes (ON) the switch unit w6 in the frequency control circuit 500d and opens (OFF) w5, so that the frequency modulation branch 526 is turned on. In this way, the radiator D is equivalent to connecting 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 in the frequency control circuit 500f and opens (OFF) w8, so that the frequency modulation branch 527 is turned on. In this way, the radiator F is equivalent to connecting an inductor of about 5n, and the frequency is adjusted to about 3.1Ghz.

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

[0465] Fig.29The efficiency comparison diagram of antenna 2 and the efficiency comparison diagram of antenna 1 in the wifi and B41 coexistence scenario and the low performance scenario 22 obtained when the electronic device was performing a simulation effect test.

[0466] like Fig.29 As shown, the horizontal axis represents frequency, the unit is GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency), the unit is dB.

[0467] Fig.29 In the figure, the curve "Radiation Efficiency - Coexistence State" and the curve "Radiation Efficiency - Scenario 22" respectively represent the radiation efficiency of antenna 2 in the coexistence state scenario and the low-performance scenario. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the coexistence state scenario, the radiation efficiency of antenna 2 is about -6.6 dB, and in the low-performance scenario 22, the radiation efficiency of antenna 2 is about -7.6 dB. Compared with the low-performance scenario 22, in the coexistence state, the radiation efficiency of antenna 2 is improved by about 1 dB.

[0468] Fig.29 In the figure, the curve "System Efficiency - Coexistence" and the curve "System Efficiency - Scenario 22" respectively represent the system efficiency of antenna 2 in the coexistence scenario and the low-performance scenario. At this time, the operating frequency of antenna 2 is 2.4 GHz. In the coexistence scenario, the system efficiency of antenna 2 is about -7.9 dB, and in the low-performance scenario 22, the system efficiency of antenna 2 is about -6.9 dB. Compared with the low-performance scenario 22, in the coexistence state, the system efficiency of antenna 2 is also improved by 1 dB.

[0469] Fig.30 This is a comparison chart of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained when the electronic device is undergoing simulation effect testing.

[0470] like Fig.30 As shown in (1), the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 22" respectively represent the radiation efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 22. The curve "system efficiency-coexistence state" and the curve "system efficiency-scenario 22" respectively represent the system efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario. At this time, the operating frequency of antenna 1 is 2.55Ghz. The radiation efficiency of antenna 1 is reduced from -3.6dB in the low-performance scenario to -5.4dB in the coexistence state of wifi and B41, and the system efficiency of antenna 1 is reduced from -3.9dB in the low-performance scenario to -5.8dB in the coexistence state of wifi and B41. Compared with the low-performance scenario 22, the radiation efficiency of antenna 1 is reduced by about 1.6dB in the coexistence state of wifi and B41.

[0471] like Fig.30 As shown in (2), the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (transmission efficiency) in dB. Fig.30 As shown 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 it is working in the coexistence state scenario and the low-performance scenario 22. The transmission efficiency indicated by point K21 is smaller than the transmission efficiency indicated by K22, so the transmission efficiency of the antenna 1 in the coexistence state is slightly worse than that in the low-performance scenario 22.

[0472] Combination Fig.29 as well as Fig.30 It can be seen that although the performance of antenna 1 has declined, the radiation efficiency and system efficiency of antenna 1 are above -6dB, and the transmission efficiency is below -6dB, which means that although the performance of antenna 1 has declined, it is still good. And the performance of antenna 2 has been improved. It can be understood that while the performance of antenna 2 is improved, the performance of antenna 1 is also balanced.

[0473] It should be understood here that for the second antenna structure, when the electronic device is in other states, the operating frequencies of antenna 1 and antenna 2 can be adjusted according to the preset frequency modulation 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. This embodiment of the application will not be repeated.

[0474] It should be understood that for the second antenna structure, when the electronic device is in other states, the operating frequencies of antenna 1 and antenna 2 can be adjusted according to the preset frequency modulation 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. This embodiment of the application will not be repeated.

[0475] It should also be understood that, in the aforementioned 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 also another example of the aforementioned communication mode A. Antenna 2 (responsible for the wifi 2.4G frequency band) is an example of antenna A. In actual situations, the antenna A can also be other antennas responsible for other frequency bands, which is not limited in the embodiments of the present application.

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

[0477] Based on the third antenna structure, when the electronic device is in the wifi single state, the radiator in antenna 1 and antenna 2 that is mainly responsible for the wifi2.4G frequency band can be frequency modulated according to the preset frequency modulation rule 23a, and the antenna 1 can be used to assist the antenna 2 in improving performance, so that the electronic device has better ability to communicate with other electronic devices through the wifi2.4G communication method. At the same time, when the electronic device is in the wifi single state, the radiator in antenna 2 that is mainly responsible for the GPS frequency band is frequency modulated according to the preset frequency modulation rule 23a. Compared with the aforementioned first antenna structure, in the third antenna structure, more radiators can be used to be responsible for the GPS frequency band, so that the electronic device has better ability to communicate with other electronic devices through the GPS communication method. Among them, the description of the frequency modulation rule 23a and its related contents can refer to the following content. Figure 32-Figure 33 The description of the related contents will not be elaborated here.

[0478] Based on the third antenna structure, the electronic device can, when in a coexistence state of wifi and B41, perform frequency modulation on the radiators in antenna 1 and antenna 2 that are mainly responsible for the wifi2.4G frequency band and the radiators that are mainly responsible for the B41 frequency band according to the preset frequency modulation rule 23b. The frequency of the radiator D responsible for the B41 frequency band in the low-performance scenario 12 can be adjusted to be responsible for the wifi2.4G frequency band. In this way, although the performance of antenna 1 (responsible for the B41 frequency band) has declined, the radiation efficiency and system efficiency of antenna 1 are still good at this time, and the performance of antenna 2 (responsible for the wifi2.4G frequency band) can be improved. That is, while improving the performance of antenna 2, the performance of antenna 1 is also balanced. For the relevant content of the low-performance scenario 12, please refer to the aforementioned related description, which will not be repeated here.

[0479] Fig.31 An exemplary diagram of a third antenna structure is shown.

[0480] like Fig.31 As shown, the third antenna structure is similar to the first antenna structure mentioned above. Figure 3 and its related contents for the description of the first antenna structure. For example, Fig.31 In the above Figure 3 The same reference numerals in the figure represent the similarities between the first antenna structure and the third antenna structure. The similarities between the two antenna structures are not described here, but the differences between the two antenna structures are described. The differences between the third antenna structure and the first antenna structure include: the radiator H does not include a ground terminal, the radiator E does not include a feeding point but the feeding point (for example, feeding point 404c) is set on the radiator C, and the radiator B is provided with a connection point 406b for connecting to the frequency control circuit.

[0481] In the third antenna structure, the feeding point 404c of the radiator C is connected to the RF source 4 of the electronic device. The feeding point 404c is connected to the first ground plane 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 modulation branch, thereby adjusting the frequency of the radiator C. The connection point 406e of the radiator E is connected to the first ground plane 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 modulation branch, thereby adjusting the frequency of the radiator E. The connection point 406e of the radiator E is connected to the first ground plane 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 ground plane 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 modulation branch, thereby adjusting the frequency of the radiator D. The connection point 406f of the radiator F is connected to the second ground plane 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 modulation branch, thereby adjusting the frequency of the radiator F. In the case where the radiator H is not provided with a ground terminal, the length of the radiator H is not limited, and it can be longer than the length of the radiator B or shorter than the length 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 feed point 404c is the same as the frequency control circuit 400e connected to the feed point 104e in the first antenna structure.

[0483] In the third antenna structure, since the radiator C has a feeding point, the radiator does not belong to antenna 2, but to antenna 1. The subordinate relationships between other radiators and antenna 1, antenna 2, and antenna 3 can refer to the subordinate relationships between each radiator and antenna 1, antenna 2, and antenna 3 in the first antenna structure, which will not be repeated here.

[0484] In the third antenna structure, the working frequency band (frequency range) of the antenna 1 may include one or all of the medium and high frequency (MHB) band or the N78 band, and the feed in the antenna 1 is generated in the radiator C. The working frequency band of the antenna 2 includes the GPS band or the wifi2.4G band, and the feed in the antenna 2 is generated in the radiator A. At this time, the antenna 2 can be responsible for providing GPS communication and 2.4Gwifi communication for the electronic device, and the feed in the antenna 2 is generated in the radiator G. The working frequency band of the antenna 3 includes one or more of the N78 band or the wifi5G band.

[0485] Regarding the communication method provided by each antenna for the electronic device based on the working frequency, please refer to the description of the aforementioned related content, which will not be repeated here.

[0486] The following describes the relevant contents involved in the Wi-Fi single-state scenario based on the third antenna structure mentioned 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 radiator B, in addition to the aforementioned frequency higher than radiator A (e.g., 2.6Ghz or 2.8Ghz), can also be adjusted to another frequency through the frequency control circuit connected to radiator B, and the other frequency is a frequency close to the GPS frequency band. Among them, the aforementioned frequency higher than radiator A can be called frequency 11, and the other frequency close to the GPS frequency band can be called frequency 12.

[0488] In this way, when the electronic device is in the wifi single state, the radiator B can not only distribute the current at frequency 11 (in the same direction as the current of radiator A) to play a positive parasitic radiation role on the radiator A whose working frequency belongs to the wifi2.4G frequency band, but also distribute the current at frequency 12 (in the same direction as the current of radiator A) to play a positive parasitic radiation role on the radiator A whose working frequency belongs to the GPS frequency band.

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

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

[0491] Fig.32 A target current direction 31 involved in a wifi single state scenario is shown.

[0492] The target current direction 31 describes the current direction of each radiator mainly responsible for the wifi2.4G band when the operating frequency of radiator A includes the wifi2.4G band. Among them, radiator A is the main radiator, and the parasitic radiators include radiator B, radiator C and radiator D. Based on the above content, radiators B and radiator C are first-class radiators, and the expected current direction they generate is the same as that of radiator A. Radiator D is a second-class radiator, and the expected current direction it generates is opposite to that of radiator A.

[0493] In some possible cases, when the operating frequency of radiator A includes the wifi2.4G frequency band, the parasitic radiator of radiator A may also include other radiators. For example, radiator E, radiator F, and radiator H. Here, for radiator E and radiator F, the frequency of radiator E and radiator F may be adjusted to be higher (higher than the frequency of radiator B) so that the current generated by radiator E and radiator F is weaker (weaker than the current distributed by radiator A). Here, the parasitic effect of other radiators on radiator A is small and may not be discussed here.

[0494] It should be understood here that the operating frequency of radiator A includes not only the WiFi 2.4G frequency band but also the GPS frequency band, and the radiators mainly responsible for the GPS frequency band may include radiator A (main radiator) and radiator B (parasitic radiator). At this time, the current directions of radiator A and radiator B are the same.

[0495] Fig.33 An exemplary current distribution simulation diagram of each radiator when the electronic device is in a wifi single-state scenario is shown.

[0496] like Fig.33 As shown in (1), it is 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 single state. Fig.32 The current direction of each radiator corresponds to the target current direction 31 shown in FIG. Among them, the current direction of radiator D is opposite to that of radiator A. The current direction of radiator B and radiator C is the same as that of radiator A (main radiator). The current direction of radiator E and radiator F is the same as that of radiator A. And the current of radiator E and radiator F is weaker than that of radiator A.

[0497] like Fig.33 As shown in (2), it is an exemplary current distribution simulation diagram of each radiator mainly responsible for the GPS frequency band when the electronic device is in the wifi single state. It can be seen that the current direction of radiator B is the same as that of radiator A (main radiator).

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

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

[0500] The preset frequency modulation rule 23a may include: for the third antenna structure, when the electronic device is in the wifi single state, the operating frequency of the radiator A (main radiator) is adjusted to include frequency 21 and frequency 22, wherein frequency 21 belongs to the wifi 2.4G frequency band, and frequency 22 belongs to the GPS frequency band. The operating frequency of the radiator B is adjusted to include frequency 11 and frequency 12, wherein frequency 11 is greater than the operating frequency 21. Frequency 12 is greater than the operating frequency 22. The operating frequency of the radiator C is adjusted to be less than the operating frequency 21. The operating frequency of the radiator D is adjusted to be greater than the operating frequency 21.

[0501] Generally speaking, in some possible cases, the frequency of each parasitic radiator can be set close to the frequency of the main radiator to better produce positive parasitic radiation effect on the main radiator.

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

[0503] Fig.34 This is an effect curve diagram of the S parameters of antenna 1 and antenna 2 in a wifi single-state scenario obtained when the electronic device is performing a simulation effect test. The horizontal axis represents the frequency in Ghz, and the vertical axis represents the amplitude value of S11 in dB.

[0504] Fig.34 There are two curves in the figure: the curve "antenna 2-wifi single mode" is referred to as curve N11, and the curve "antenna 1-wifi single mode" is referred to as curve N12. Curve N11 shows the frequency relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in the wifi single mode scenario. Curve N12 shows the frequency relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in the wifi single mode scenario.

[0505] Fig.34 The letters AD in the figure represent radiator A to radiator D respectively. Fig.34 It can be seen that in the wifi single-state scenario, the radiators mainly responsible for the wifi 2.4G frequency band can be, in order from low to high frequency, radiator C (about 2.0Ghz), radiator D (about 2.3Ghz), radiator A (main radiator, about 2.44Ghz), and radiator B (about 2.7Ghz). Fig.34The frequency relationship of each radiator in the wifi2.4G frequency band can make the expected current direction of each radiator in antenna 1 and antenna 2 the target current direction 31. This helps to improve the performance of antenna 2 in the wifi2.4G frequency band. For the description of the target current direction 31, please refer to the above Fig.32 The description is not repeated here.

[0506] Depend on Fig.34 It can also be known that the radiators mainly responsible for the GPS frequency band in the wifi single-state scenario can be, in order from low to high frequency, radiator A (main radiator, about 1.53Ghz), radiator B (about 1.7Ghz). In this way, when the operating frequency of radiator A belongs to the GPS frequency band, radiator B can generate current in the same direction as radiator A. This helps to improve the performance of antenna 2 in the GPS frequency band.

[0507] It should be understood that if Fig.34 As shown in FIG. 1 , the reason why the frequency of radiation D is adjusted closer to radiation body A (main radiation body) than radiation body C is that radiation body D is farther away from radiation body A than radiation body C. If radiation body D is expected to provide more positive parasitic radiation for radiation body A, the frequency of radiation D needs to be adjusted relatively close to radiation body A. Otherwise, the current excited by radiation body D will be weak, and the positive parasitic radiation effect on radiation body A will be small. The following describes how to adjust the frequency of radiation D. Fig.34 The frequencies of the various radiators are shown in FIG.

[0508] Radiator A can generate two operating frequencies by matching, namely the aforementioned frequency 21 (belonging to the wifi2.4G frequency band) and frequency 22 (belonging to the GPS frequency band). Radiator B is connected to the frequency control circuit 407b (for example, an LC series circuit) or other forms of frequency selection circuits. Radiator B is equivalent to a capacitor for the GPS frequency band and a large capacitor or a small inductor for the wifi2.4G frequency band by turning off the switch unit of the frequency control circuit 407b, or directly connecting to the floor, thereby generating two different frequencies, including frequency 11 (approximately 2.7Ghz) and frequency 12 (approximately 1.7Ghz). Radiator C adjusts the frequency of radiator C to approximately 2.0Ghz by switching the switch unit of the frequency control circuit 407c. Radiator D adjusts the frequency of radiator D to approximately 2.3Ghz by switching the switch unit of the frequency control circuit 407d. The radiator E and the radiator F are respectively switched to the switches connected to the small inductor by the frequency control circuit 407e and the frequency control circuit 407f, so that the radiator E and the radiator F are adjusted to a higher frequency.

[0509] In some possible cases, for the radiator C and the aforementioned Figure 8The frequency adjustment method of the radiator E is the same as that of the radiator D as described above. Figure 8 The frequency adjustment method of the radiator D shown in (1) is the same. Please refer to the description of the above related contents, which will not be repeated here.

[0510] The radiation efficiency and system efficiency of antenna 2 in the Wi-Fi single-mode scenario are described below.

[0511] Fig.35 This is a comparison chart of the radiation efficiency and system efficiency of antenna 2 in a wifi single-state scenario obtained when the electronic device is performing a simulation effect test.

[0512] like Fig.35 As shown, the horizontal axis represents frequency in Ghz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB. The closer the radiation efficiency and system efficiency are to 0 dB, the better the radiation efficiency and system efficiency of the antenna are. The better the performance of the antenna is. The curve "Radiation Efficiency-Wifi Single Mode" and the curve "System Efficiency-Wifi Single Mode" respectively represent the radiation efficiency and system efficiency of antenna 2 when working in the Wifi Single Mode scenario.

[0513] In the third antenna structure, when the operating frequency of antenna 2 is 1.53 GHz (GPS frequency band), the radiation efficiency is -2.9 dB and the system efficiency is -3.25 dB. Fig. 9 As shown, in the first antenna structure, when the operating frequency of antenna 2 is 1.53Ghz, the radiation efficiency and system efficiency are both below -4dB. Compared with the above-mentioned frequency modulation according to the preset frequency modulation rule 21a for the first antenna structure, the frequency modulation according to the preset frequency modulation rule 23a can improve the performance of antenna 2 in the GPS frequency band in the wifi single-state scenario.

[0514] In the third antenna structure, when the operating frequency of antenna 2 is 2.44Ghz (wifi frequency band), the radiation efficiency is -2.17dB and the system efficiency is -2.67dB. Fig. 9 As shown, in the first antenna structure, when the operating frequency of antenna 2 is 2.44Ghz (which can be approximately equal to 2.4Ghz), the radiation efficiency is -2.8dB and the system efficiency is -3.3dB. Compared with the performance of the first antenna structure in the low-performance scenario 11, the performance of antenna 2 in the wifi2.4G band can still be improved in the wifi single-state scenario when frequency modulation is performed according to the preset frequency modulation rule 23a.

[0515] The following describes the relevant contents involved in the coexistence scenario of WiFi 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 a coexistence state of wifi and B41, the electronic device can readjust the operating frequency of antenna 2 and antenna 1 coupled thereto according to the preset frequency modulation rule 23b, so that the current direction of each radiator in antenna 1 and antenna 2 is adjusted to the target current direction (recorded as target current direction 32). The target current direction 32 is the current direction that satisfies the coexistence state of wifi and B41 when the third antenna structure is adopted, and the radiators in antenna 1 and antenna 2 can be reasonably used to provide 2.4Gwifi communication mode and cellular network communication (in the B41 frequency band) mode.

[0517] Fig.36 A target current direction 32 involved in the coexistence scenario of wifi and B41 is shown.

[0518] like Fig.36 As shown, compared with the first antenna structure, in the third antenna structure, when the electronic device is in a coexistence state of wifi and B41, radiator C is the main radiator for the electronic device to provide cellular network communication (in the B41 frequency band). In addition to radiator C, the radiator mainly responsible for the B41 frequency band may also include radiator E and radiator F. At this time, the electronic device can adjust the operating frequency of radiator C to the B41 frequency band, for example, to 2.55Ghz. In addition, the frequencies of radiators E and radiator F are adjusted to be higher than radiator C, so that radiators E and radiator F, which are parasitic radiators, can excite currents in the same direction as radiator A.

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

[0520] The frequency of radiator D can be adjusted by the frequency control circuit 407d connected to radiator D, and adjusted to be equivalent to a large capacitor for the wifi 2.4G frequency band, equivalent to a short circuit for the B41 frequency band, and not to work on the B41 frequency band. In this way, radiator D can assist radiator A in providing a 2.4G wifi communication mode, but will not affect the cellular network communication (in the B41 frequency band) provided by radiator C.

[0521] It should also be understood that, in some possible cases, when radiator A generates resonance on the wifi2.4G frequency band, radiator G and radiator A can be regarded as a parasitic radiator with radiator A as the main component, and radiator G can also excite a current in the same direction as radiator A. At this time, the resonance generated by radiator G has a positive parasitic radiation effect on radiator A, which can improve the performance of antenna 2.

[0522] In some possible cases, in the third antenna structure, when the electronic device is in a coexistence state of wifi and B41, the frequency adjustment method for each radiator (radiator A, radiator H, radiator B and radiator D) mainly responsible for the wifi2.4G frequency band can be the same as the adjustment method in the first antenna structure mentioned above, and will not be repeated here.

[0523] The following describes in detail the frequency adjustment of each radiator (radiator C, radiator E and radiator F) in the B41 frequency band in the third antenna structure.

[0524] Fig.37A as well as Fig.37B An exemplary current distribution simulation diagram of each radiator when the electronic device is in a wifi and B41 coexistence scenario is shown.

[0525] like Fig.37A As shown in (1), it is an exemplary current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G frequency band when the electronic device is in the wifi and B41 coexistence scenario. Fig.36 The current direction of each radiator corresponds to the target current direction 32 shown in FIG. 1 . At this time, the current direction of radiator D is opposite to that of radiator A. The current direction of radiator B and radiator C is the same as that of radiator A.

[0526] like Fig.37A As shown in (2), it is a current distribution simulation diagram of each radiator mainly responsible for the wifi2.4G frequency band in the electronic device in the low performance scenario 12. At this time, the current direction of radiator D and radiator F is the same as the current direction of radiator A, which will cause the performance of antenna 2 (including radiator A) to be reduced.

[0527] like Fig.37B(1) is an exemplary current distribution simulation diagram of each radiator mainly responsible for the B41 frequency band when the electronic device is in a wifi and B41 coexistence scenario. Fig.36 The current direction of each radiator corresponds to the target current direction 32 shown in FIG. At this time, radiator C (main radiator) mainly uses radiators E and F as parasitic radiators, and the current direction of radiators E and F is the same as that of radiator C.

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

[0529] Fig.38 A frequency diagram of each radiator mainly responsible for the B41 frequency band is shown.

[0530] Fig.38 This is a curve diagram of the S parameters of antenna 1 in the scenario of wifi and B41 coexistence obtained when the electronic device is performing simulation effect testing. Fig.38 As described above, the horizontal axis represents the frequency, the unit is Ghz, and the vertical axis represents the amplitude value of S11, the unit is dB.

[0531] Fig.38 The letters C, E, and F in the figure represent radiators C, E, and F, respectively. Fig.38 It can be seen that in some possible cases, in the scenario where wifi and B41 coexist, among the radiators mainly responsible for the B41 frequency band, the frequency of radiator C (main radiator) can be set to 2.55Ghz, which belongs to the B41 frequency band. The frequency of radiator E is 2.9Ghz, and the frequency of radiator E is 3.4Ghz, both higher than the frequency band of radiator C. This makes the current distributed by radiator E and radiator F have the same direction as radiator C.

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

[0533] Fig.39 This is a comparison chart of the efficiency of the electronic device in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained during the simulation effect test.

[0534] like Fig.39 As shown in (1), it is a comparison diagram of the efficiency of antenna 2 in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained during the simulation effect test. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 12" respectively represent the radiation efficiency of antenna 2 when the operating frequency of antenna 2 is 2.4Ghz (belonging to the wifi2.4G frequency band) in the wifi and B41 coexistence scenario and the low performance scenario 12. At this time, in the wifi and B41 coexistence scenario, the radiation efficiency of antenna 2 is about -2.7dB, and in the low performance scenario 12, the radiation efficiency of antenna 2 is about -3.5dB. Compared with the low performance scenario 12, in the coexistence state, the radiation efficiency of antenna 2 is improved by about 0.8dB.

[0535] Fig.39 In (1), the curve "system efficiency - coexistence state" and the curve "system efficiency - scenario 12" respectively represent the system efficiency when antenna 2 is 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] like Fig.39 As shown in (2), it is a comparison diagram of the efficiency of antenna 1 in the wifi and B41 coexistence scenario and the low performance scenario 12 obtained during the simulation effect test. The curve "radiation efficiency-coexistence state" and the curve "radiation efficiency-scenario 12" respectively represent the radiation efficiency of antenna 1 when the operating frequency of antenna 1 is 2.55Ghz (belonging to the B41 frequency band) in the wifi and B41 coexistence scenario and the low performance scenario 12. At this time, in the wifi and B41 coexistence scenario, the radiation efficiency of antenna 1 is about -2.9dB, and in the low performance scenario 12, the radiation efficiency of antenna 1 is about -2.2dB. Compared with the low performance scenario 12, in the coexistence state, the radiation efficiency of antenna 1 is reduced by about 0.7dB, but it is still close to 0dB, indicating that the radiation efficiency of antenna 2 is still good at this time.

[0537] Fig.39 In (2), the curve "System Efficiency - Coexistence" and the curve "System Efficiency - Scenario 12" respectively represent the system efficiency when antenna 1 is working in the wifi and B41 coexistence 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 scenario has decreased, but is still close to 0dB, indicating that the system efficiency of antenna 1 is still good at this time.

[0538] It should be understood here that in addition to the three antenna structures mentioned above, other antenna structures can be obtained based on the fixed structure involved in this application. However, the frequency modulation rules involved in the wifi single state and the wifi and B41 coexistence state can be similar or the same, and can be directly or deduced based on the above content. The embodiments of this application will not be repeated here. The frequency control circuit shown in each antenna structure is an exemplary description. In actual applications, the frequency control circuit can also be adjusted, which should not constitute a limitation on the embodiments of this application.

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

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

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

[0542] like Fig.40 As shown, the antenna structure involved in the MHB single-state scenario is similar to the third antenna structure described above, except that the frequency control circuit connected to the connection point 406b of the radiator B includes multiple frequency modulation branches. The feeding point 104a of the radiator A is connected to the frequency control circuit and then grounded through the switch unit. The radiator H may include a ground terminal or may not include the ground terminal.

[0543] Among them, compared with Fig.31 The frequency control circuit 407b connected to the radiation B, Fig.40 The frequency control circuit connected to the radiator B includes more frequency modulation branches, so that the radiator B can adjust more frequency bands. The frequency control circuit connected to the radiator A includes multiple frequency modulation branches, so that the radiator A can adjust multiple different frequency bands.

[0544] Fig.41 An exemplary frequency modulation rule involved in the MHB single-state scenario is shown.

[0545] Fig.41 The letters AF in the figure represent radiator A to radiator F respectively.

[0546] like Fig.41As shown, in the MHB single-state scenario, the radiators mainly 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 of radiator C (radiators D, radiator E and radiator F) are all higher than radiator C, so that the current excited by each parasitic radiation is in the same direction as the radiator C, and the radiator C can play a positive parasitic radiator role, thereby enabling the electronic device to communicate with other electronic devices through a cellular network (in the MHB frequency band) communication method. Better. At the same time, radiator A generates a frequency lower than the MHB frequency (belonging to the MHB frequency band) by switching the capacitor through a switch. Radiator B switches the capacitor to generate a frequency lower than the MHB frequency and higher than the radiator A frequency, which together improves the performance of antenna 3 in the MHB single-state scenario.

[0547] It should be understood that the frequencies of the various radiators involved in the embodiments of the present application can also be understood as resonant frequencies, and the frequencies of the parasitic radiators can also be understood as parasitic resonant frequencies.

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

[0549] It should also be understood that in the above-mentioned related contents, the radiator B and the radiator H control the frequency to meet the requirements by controlling the length of the radiator. Fig.42 As shown, a frequency control circuit may be added between the radiator B or the radiator H to adjust the frequency of the radiator B and the radiator H respectively.

[0550] According to the frequency modulation rules involved in this application, the performance of antenna A (for example, antenna 2) can be improved when the electronic device is in a folded state. The performance includes the radiation efficiency of the antenna and the system efficiency, as well as other contents. For example, the body SAR value of the antenna can also be reduced, and the transmission power of the antenna can be increased, so as to improve the antenna performance of the electronic device in a free space scenario or a handheld scenario when the electronic device is in a folded state. Among them, SAR (specific absorption rate, the full name of English is "specific absorption rate") refers to the electromagnetic power absorbed by a unit mass of human tissue, and the unit is W / kg. SAR values ​​are generally used internationally to measure the thermal effect of radiation from folding screen electronic devices. 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 antenna as the second antenna structure mentioned above as an example, when the electronic device is in a wifi single-state scenario, the SAR of the front face of the electronic device can be reduced from 1.4 to 0.78 compared to the SAR of a low-performance scenario 11 (the operating frequency of antenna 1 is the medium-high frequency B3 band). The SAR of the top side of the electronic device can be reduced from 1.78 to 1.29 compared to the SAR of the low performance scenario 11 (the operating frequency of the antenna 1 is the medium and high frequency B3 band). It should be understood that the above description of SAR is based on the example of body 5mm 10g, normalized to -6dB.

[0551] In the above-mentioned related contents, the radiator A can adjust the frequency by matching. The frequency of the radiator A includes not only the wifi2.4G frequency band, but also other frequency bands. For example, referring to the above Figure 6 , Fig.12 , Fig. 20 , Fig.26 As shown, the radiator A has another frequency between 1.55 GHz and 1.65 GHz. This frequency belongs to the GPS frequency band and can provide GPS communication for electronic devices.

[0552] The aforementioned radiator G can provide 5G communication and 5G wifi communication for the electronic device. It is not used here to participate in improving the performance of the antenna 2. When the electronic device does not enable the 5G communication mode and the 5G wifi communication mode, the radiator G can also be used to improve the performance of the antenna 2.

[0553] The following describes a phenomenon in which the more parasitic radiators satisfying condition 1 generate current in the same direction as the main radiator, the more the performance of the target antenna (including the main radiator) is improved.

[0554] like Fig.43As shown in (1), radiator A is the main radiator, and radiators C-D are parasitic radiators. When the current excited by each parasitic radiator is in the same direction as radiator A, and when each radiator is arranged in a straight line, the floor eigenmode of the floor is as follows: Fig.43 As shown in (2), it means that the floor eigenmode excitation is good.

[0555] The more parasitic radiators that meet condition 1 and have current in the same direction as radiator A (main radiator), the greater the magnetic vector position of radiator A, which can make the efficiency (for example, radiation efficiency) of the target antenna (including radiator A) higher.

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

[0557]

[0558] In formula (1), represents the magnetic vector position of the radiator A, Represents the sum of the currents of the parasitic radiators of radiator A. The larger the sum of the currents, the Formula (2) indicates that the more radiators have the same current direction as radiator A (main radiator), Based on formula (1) and formula (2), it can be known that the more radiators with the same current direction as radiator A (main radiator), the greater the magnetic vector position of radiator A.

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

[0560]

[0561] In formula (3), P represents the efficiency of radiator A. Based on formula (3), it can be known that the larger the magnetic vector position of radiator A is, the higher the efficiency (eg, radiation efficiency) of the target antenna (including radiator A) is.

[0562] Based on formula (1) to formula (3), it can be seen that the more parasitic radiators that meet condition 1 have the same current direction as radiator A (main radiator), the higher the efficiency (eg radiation efficiency) of radiator A.

[0563] The following describes a phenomenon in which the more parasitic radiators satisfying condition 2 are generated in the opposite direction to the current generated on the main radiator, the more the performance of the target antenna (including the main radiator) is improved.

[0564] like Fig.44 As shown, when the current directions of radiator D and radiator A are opposite, the equivalent current of the target antenna (including radiator A) is Equivalent magnetic current Orthogonal, similar to magnetic electric dipole, the two radiations are complementary, making the radiation efficiency of the target antenna good.

[0565] It should be understood that the first antenna branch mentioned above includes all radiators disposed in the first device body 100 , and the second antenna branch includes all radiators disposed in the second device body 200 .

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

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

[0568] Fig.45 The figure shows a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in the wifi single state in this case.

[0569] like Fig.45 As shown in (1), it is a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in the wifi single state, when 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, current A is distributed on radiator A, and currents in the same direction as current A are distributed on radiators B and radiator C. Currents in the opposite direction of current A are distributed on radiator D. At this time, the method for adjusting the frequency of radiator A-radiator D can refer to the aforementioned Figure 5A The description of adjusting the frequency of radiator A-radiator D in the related content will not be repeated here.

[0570] like Fig.45 As shown in (2), it is a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in the wifi single state when the first antenna branch is specifically distributed along the linear frame of the first device body 100 and the second antenna branch is specifically distributed along the linear frame of the second device body 200. Among them, current A is distributed on radiator A, and currents in the same direction as current A are distributed on radiators B, radiators C and radiators D. At this time, the method for adjusting the frequency of radiator A-radiator D can refer to the above Fig.19AThe description of adjusting the frequency of radiator A-radiator D in the related content will not be repeated here.

[0571] It should be understood that other radiators may be added to the first antenna branch and the second antenna branch to further improve the performance of the antenna.

[0572] For example, in another possible case, the first antenna branch may include not only the aforementioned radiator A and radiator C, but also a radiator E. The second antenna branch may include not only the aforementioned radiator B and radiator D, but also a radiator F. For the description of each radiator, reference may be made to the aforementioned description of radiators A to F, which will not be repeated here.

[0573] In this case, when the electronic device is in the wifi single state, the frequency of radiator A-radiator D can still be adjusted based on the frequency modulation rule so that the current direction of radiator A and radiator D is the desired current direction to improve the performance of the antenna.

[0574] Fig.46 The figure shows a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in the wifi single state in this case.

[0575] like Fig.46 As shown in (1), it is a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in wifi single mode, when 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.

[0576] like Fig.46 As shown in (2), it is a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in wifi single mode, when the first antenna branch is specifically distributed along the straight frame of the first device body 100, and the second antenna branch is specifically distributed along the straight frame of the second device body 200.

[0577] like Fig.46 (1) and Fig.46 As shown in (2), the currents on radiator E and radiator F are distributed in the same direction as that on radiator A. The current distribution of radiator A-radiator D can refer to the above Fig.45 Regarding the frequency adjustment of radiator A-radiator F, please refer to the description of the above-mentioned related contents, which will not be repeated here.

[0578] In some possible cases, one of the feed points can be set on radiator A, and the other radiator can be set on radiator E. Fig.47As shown, it is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in the coexistence state of wifi and B41 in this case.

[0579] like Fig.47 As shown in (1), it is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in the coexistence state of wifi and B41, when 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. At this time, the L-shaped frame specifically includes a horizontal frame and a vertical frame, the radiator E is specifically arranged on the vertical frame, and the radiator A is specifically arranged on the horizontal frame. Among them, the horizontal frame is perpendicular to the vertical frame.

[0580] Among them, radiators A, B and D are mainly responsible for the wifi2.4G frequency band. Radiators E and F are mainly responsible for the B41 frequency band. Radiator A is distributed with current B, radiator B is distributed with current in the same direction as current B, and radiator D is distributed with current in the opposite direction of current B. Radiator E is distributed with current C, and radiator F is distributed with current in the same direction as current C. At this time, the method for adjusting the frequency of radiators A-radiator F can refer to the above description. Fig.10 The description of adjusting the frequency of radiator A-radiator F in its related content will not be repeated here.

[0581] In some possible implementations, the current of radiator C is relatively weak, for example, the current distributed on radiator C is weaker than the current distributed on radiator A and radiator E. This avoids negative impact on radiator A or radiator E.

[0582] like Fig.47 As shown in (2), it is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in a wifi and B41 coexistence state, when 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.

[0583] Among them, radiators A, B, D and F are mainly responsible for the wifi2.4G frequency band. Radiators E and C are mainly responsible for the B41 frequency band. Radiator A is distributed with current B, and radiators B, C, D and F are all distributed with currents in the same direction as current B. Radiator E is distributed with current C, and radiator C is distributed with currents in the same direction as current C. At this time, the method for adjusting the frequency of radiators A-F can refer to the above description. Fig.24 The description of adjusting the frequency of radiator A-radiator F in its related content will not be repeated here.

[0584] It should be understood here that the aforementioned horizontal frame can be understood as the aforementioned frame 1, and the vertical frame can be understood as the aforementioned frame 2. Horizontal and vertical do not describe the positional relationship with the horizontal plane, but indicate that the two frames are different.

[0585] It should be understood here that, in some possible cases, in a wifi single-state scenario, the excitation source connected to the feeding point in radiator A sends out an excitation signal. Other radiators (such as radiator E) may not include a feeding point, or may include a feeding point. The excitation source connected to the feeding point of the other radiator may or may not send out an excitation signal. The embodiments of the present application are not limited to this. For example, the other feeding point may be placed on radiator E, or may be placed on other radiators. For example, when placed on radiator E, the excitation source connected to the feeding point on the radiator E may or may not send out an excitation signal.

[0586] In some possible cases, in the scenario where wifi and B41 coexist, the excitation source connected to the feeding point in radiator A and the excitation source connected to the feeding point in radiator E can both send excitation signals.

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

[0588] In some possible cases, one of the feed points can be set on radiator A, and the other radiator can be set on radiator C. Fig.48 As shown, it is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in the coexistence state of wifi and B41 in this case.

[0589] like Fig.48 As shown, it is a schematic diagram of the current distribution of radiator A-radiator F when the electronic device is in a coexistence state of wifi and B41, when 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, radiator A, radiator B and radiator D are radiators mainly responsible for the wifi 2.4G frequency band. Radiator E, radiator C and radiator F are radiators mainly responsible for the B41 frequency band. Current D is distributed on radiator A, current in the same direction as current D is distributed on radiator B, and current in the opposite direction to current D is distributed on radiator D. Current E is distributed on radiator C, and current in the same direction as current E is distributed on radiator E and radiator F. At this time, the method of adjusting the frequency of radiator A-radiator F can refer to the aforementioned Fig.36 The description of adjusting the frequency of radiator A-radiator F in its related content will not be repeated here.

[0590] As described above, in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrase "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0591] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A folding screen electronic device, characterized in that: 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 via a rotating shaft, a first antenna branch is provided along the frame of the first device body, and a second antenna branch is provided along the frame of the second device body, wherein: The first antenna branch has two open ends, and a first grounding end and a second grounding end are provided on the first antenna branch, 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 placed between the first grounding end and the first open end; The second antenna branch has two open ends, and a third grounding end and a fourth grounding end are provided on the second antenna branch, 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; The projection of the first radiation segment on the second device body overlaps with the second radiation segment; 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 ground end and the first open end on the first antenna branch, the third radiation segment refers to the radiation segment between the second ground end and the second open end on the first antenna branch, the second radiation segment refers to the antenna branch from the third ground end to the third open end, and the fourth radiation segment refers to the radiation segment between the fourth ground end and the fourth open end.

2. The folding screen electronic device according to claim 1, characterized in that: A projection of the second radiation segment on the second device body does not overlap with the third radiation segment.

3. The folding screen electronic device according to claim 1 or 2, characterized in that: The first ground terminal and the second ground terminal are connected but no radiator is included between them; the third ground terminal and the fourth ground terminal are connected but no radiator is included between them.

4. The folding screen electronic device according to claim 3, characterized in that: The first antenna branches are specifically distributed along the L-shaped frame of the first device body, and the second antenna branches are specifically distributed along the L-shaped frame of the second device body.

5. The folding screen electronic device according to claim 4, characterized in that: The L-shaped frame of the first device body specifically includes a horizontal frame and a vertical frame intersecting with the horizontal frame at a first position, the L-shaped frame of the second device body specifically includes a horizontal frame and a vertical frame intersecting with the horizontal frame at a second position, the first position is included between the first grounding terminal and the second grounding terminal, and the second position is included between the third grounding terminal and the fourth grounding terminal.

6. The folding screen electronic device according to claim 4 or 5, characterized in that: When a first current is distributed on the first radiation segment, a current with the same direction as the first current is distributed on the second radiation segment; a current with the same direction as the first current is distributed on the third radiation segment, and a current with a reverse direction to the first current is distributed on the fourth radiation segment.

7. The folding screen electronic device according to claim 3, characterized in that: The first antenna branches are specifically distributed along the straight line frame of the first device body, and the second antenna branches are specifically distributed along the straight line frame of the second device body.

8. The folding screen electronic device according to claim 7, characterized in that: When a first current is distributed on the first radiation segment, currents having the same direction as the first current are distributed on the second radiation segment, the third radiation segment, and the fourth radiation segment.

9. The folding screen electronic device according to any one of claims 1 to 8, characterized in that: The first antenna branch also includes a fifth radiating segment, and the second antenna branch also includes a sixth radiating segment; There is a first gap between the fifth radiation section and the third radiation section; a grounding terminal is provided on the fifth radiation section; A second gap is provided between the sixth radiation section and the fourth radiation section; and a grounding terminal is provided on the sixth radiation section.

10. The folding screen electronic device according to claim 9, characterized in that: The first gap has the same length as the second gap.

11. The folding screen electronic device according to claim 9, characterized in that: When the folding screen electronic device is in a folded state, the projection of the fifth radiation segment on the second device body overlaps with the sixth radiation segment.

12. The folding screen electronic device according to any one of claims 9 to 11, characterized in that: Currents with the same direction as the first current are distributed on the fifth radiation segment and the sixth radiation segment.

13. The folding screen electronic device according to claim 12, characterized in that: When the first current is distributed on the first radiation segment, the current distributed on the second radiation segment to the sixth radiation segment is obtained through the resonance generated by the first radiation segment.

14. The folding screen electronic device according to any one of claims 9 to 13, characterized in that: The third radiation section is connected to the first tuning circuit; the fourth radiation section is connected to the second tuning circuit; the fifth radiation section is connected to the third tuning circuit; The sixth radiation segment is connected to the fourth tuning circuit.

15. The folding screen electronic device according to claim 14, characterized in that: The second radiating section is connected to a fifth tuning circuit.

16. The folding screen electronic device according to claim 15, characterized in that: The current distributed on the second radiation segment includes a current of a first frequency and a current of a second frequency; the first frequency and the second frequency are operating frequencies of the first radiation segment.

17. The folding screen electronic device according to claim 16, characterized in that: The current of the first frequency is obtained through the resonance generated by the first radiation section at the first frequency, and the current of the second frequency is obtained through the resonance generated by the first radiation section at the second frequency.

18. The folding screen electronic device according to any one of claims 9 to 11, characterized in that: The fifth radiating section is also provided with a second feeding point.

19. The folding screen electronic device according to claim 18, characterized in that: The excitation source connected to the first feeding point sends out an excitation signal, and the excitation source connected to the second feeding point does not send out 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.

20. The folding screen electronic device according to claim 18, characterized in that: When the first antenna branch and the second antenna branch are distributed along an L-shaped frame, when the fifth radiating segment is specifically arranged on the vertical frame of the L-shaped frame, and the first radiating segment is specifically arranged on the horizontal frame of the L-shaped frame, when a second current is distributed on the first radiating segment, a current in the same direction as the second current is distributed on the second radiating segment, and a current in the opposite direction to the second current is distributed on the fourth radiating segment; and a third current is distributed on the fifth radiating segment, and a current in the same direction as the third current is distributed on the sixth radiating segment.

21. The folding screen electronic device according to claim 20, wherein when the first antenna branch and the second antenna branch are distributed along an L-shaped frame, it is characterized in that: When the second current is distributed on the first radiation segment, the current distributed on the second radiation segment and the fourth radiation segment is obtained through the resonance generated by the first radiation segment; the current distributed on the sixth radiation segment is obtained through the resonance of the fifth radiation segment.

22. The folding screen electronic device according to claim 20 or 21, characterized in that: The current distributed on the third radiation segment is weaker than the second current and the third current.

23. The folding screen electronic device according to claim 20 or 21, characterized in that: No current is distributed on the third radiation segment.

24. The folding screen electronic device according to any one of claims 19 to 23, characterized in that: When the first antenna branch and the second antenna branch are distributed along a straight frame, when the fifth radiating segment and the first radiating segment are specifically arranged on the horizontal frame, when the second current is distributed on the first radiating segment, the second radiating segment, the fourth radiating segment and the sixth radiating segment are all distributed with currents in the same direction as the second current; and, the third current is distributed on the fifth radiating segment, and a current in the same direction as the third current is distributed on the third radiating segment.

25. The folding screen electronic device according to claim 24, wherein when the first antenna branch and the second antenna branch are distributed along a linear frame, it is characterized in that: When the second current is distributed on the first radiation segment, the current distributed on the second radiation segment, the fourth radiation segment and the sixth radiation segment is obtained through the resonance generated by the first radiation segment; the current distributed on the third radiation segment is obtained through the resonance of the fifth radiation segment.

26. The folding screen electronic device according to any one of claims 9 to 11, characterized in that: The third radiating section is also provided with a third feeding point.

27. The folding screen electronic device according to claim 24, characterized in that: When the first antenna branch and the second antenna branch are distributed along an L-shaped frame, when the third radiating segment is specifically arranged on the vertical frame of the L-shaped frame, and the first radiating segment is specifically arranged on the horizontal frame of the L-shaped frame, when a fourth current is distributed on the first radiating segment, a current in the same direction as the fourth current is distributed on the second radiating segment, and a current in the opposite direction to the fourth current is distributed on the fourth radiating segment; and a fifth current is distributed on the third radiating segment, and a current in the same direction as the fifth current is distributed on the fifth radiating segment and the sixth radiating segment.

28. The folding screen electronic device according to claim 27, characterized in that: When the fourth current is distributed on the first radiation segment, the current distributed on the second radiation segment and the fourth radiation segment is obtained through the resonance generated by the first radiation segment; the current distributed on the fifth radiation segment and the sixth radiation segment is obtained through the resonance of the third radiation segment.

29. The folding screen electronic device according to any one of claims 20 to 23, characterized in that: The excitation source connected to the first feeding point and the excitation source connected to the second feeding point both emit radio frequency signals; wherein the excitation source connected to the first feeding point is different from the excitation source connected to the second feeding point.

30. The folding screen electronic device according to any one of claims 24 to 26, characterized in that: The excitation source connected to the first feeding point and the excitation source connected to the third feeding point both emit radio frequency signals; wherein the excitation source connected to the first feeding point is different from the excitation source connected to the third feeding point.

31. The folding screen electronic device according to any one of claims 9 to 29, characterized in that: The first antenna branch also includes a seventh radiation segment, and the second antenna branch also includes an eighth radiation segment; There is a third gap between the seventh radiation section and the first radiation section; a grounding terminal is provided on the seventh radiation section; A fourth gap is provided between the eighth radiation section and the second radiation section; and a grounding terminal is provided on the eighth radiation section.

32. The folding screen electronic device according to claim 31, characterized in that: The third gap has the same length as the fourth gap.

33. The folding screen electronic device according to claim 30, characterized in that: When the folding screen electronic device is in a folded state, the projection of the seventh radiation segment on the second device body overlaps with the eighth radiation segment.

34. The folding screen electronic device according to claim 30 or 31, characterized in that: The current distributed in the seventh radiation segment is in the same direction as the current distributed in the second radiation segment.

35. The folding screen electronic device according to any one of claims 30 to 33, characterized in that: A fourth feeding point is also provided on the eighth radiating segment.

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