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

Folding screen electronic device and antenna device thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2023, with application number 202310389830.7 and application name “Folding screen electronic device and its antenna device”, the entire contents of which are incorporated by reference into this application. 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 equipped with antennas to support communication between the foldable screen electronic device and other electronic devices. Generally, the antenna performance of a foldable screen electronic device is better when it is in the unfolded state, but it is worse when it is in the folded state. The reason is that the antenna is made of metal, and its radiation performance is interfered with by other metal objects. Therefore, a clean space (referred to as the clearance area) is usually left 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 becomes worse.

[0004] Summary of the Invention

[0005] The present application provides a foldable screen electronic device and an antenna device thereof. The antenna device in the foldable screen electronic device can enable the antenna to have better performance when the electronic device is in a folded state.

[0006] In the 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; 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 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.

[0007] In some embodiments, the first device body may be the first device body 100 described in the specification, and the second device body may be the second device body 200 described in the specification. The first antenna branch may be understood as the collective term for all radiating segments on the first device body, and the second antenna branch may be understood as the collective term for all radiating segments on the second device body. The radiating segments herein may be understood as the radiators described in the specification. The open ends may be the open ends described in the specification. For example, the first open end may be understood as the open end 103a described in the specification, the second open end may be the open end 103c described in the specification, the third open end may be the open end 203b described in the specification, and the fourth open end may be the open end 203d described in the specification. The first ground terminal may be the ground terminal 102a described in the specification, the second ground terminal may be the ground terminal 102c described in the specification, the third ground terminal may be the ground terminal 202b described in the specification, and the fourth ground terminal may be the ground terminal 202d described in the specification. The first feeding point may be understood as the feeding point 104a described 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.

[0008] In the antenna device involved in the above embodiment, two adjacent and close ground terminals are set in one antenna branch, and one antenna branch can be used as two radiating segments. In the first antenna branch and the second antenna branch, the radiating segment that does not include the feeding point can be used as a coupled radiating segment (parasitic radiating segment) of the radiating 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 radiating segments, creating conditions for setting different operating frequencies based on different radiating 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 have a positive parasitic radiation effect on the radiator A. In this way, the performance of the antenna can be improved when the antenna is working.

[0009] 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.

[0010] In some embodiments, when the electronic device is in the folded state, there is no overlap between radiator B and radiator C. This can reduce mutual interference between radiator C and radiator B. This can further improve the performance of the antenna when it is in operation.

[0011] 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.

[0012] In the above embodiment, the L-shaped frame may be the frame at the corner mentioned in the description. There are radiators arranged in a broken line.

[0013] 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.

[0014] In the above embodiment, when the antenna branches are distributed along the L-shaped frame, the first radiating 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 the 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 segment, they can play a positive parasitic radiation role on the first radiating segment.

[0015] 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.

[0016] In the above embodiment, the antenna branches are distributed along the linear frame, and the radiation segments in different device bodies are arranged in parallel.

[0017] 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.

[0018] In the above embodiment, the first radiating segment is the primary radiating segment, and its operating frequency band may be the Wi-Fi 2.4 GHz band. The other radiating segments are parasitic radiating segments of the first radiating segment. When the antenna branches are distributed along a linear frame, if the currents flowing through the other radiating segments and the first radiating segment are in the same direction as the current flowing through the first radiating segment, they can provide positive parasitic radiation to the first radiating segment, thereby improving antenna performance.

[0019] 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 end is provided on the fifth radiating segment; there is a gap between the sixth radiating segment and the fourth radiating segment; and a grounding end is provided on the sixth radiating segment.

[0020] In some embodiments, the fifth radiation segment can be understood as the radiator E in the description, and the sixth radiation segment can be understood as the radiator F in the description.

[0021] In the above-described embodiment, the antenna branches are coupled via slots, resulting in more radiating ends. This allows the main radiating segment to have more parasitic radiating segments that function as forward radiators, further enhancing antenna performance. Furthermore, having more radiating segments allows for different operating frequencies to be set based on the different radiating segments.

[0022] 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.

[0023] In the above embodiment, the fifth radiating segment overlaps with the sixth radiating segment, thereby enhancing the coupling effect between the fifth and sixth radiating segments. For example, when the electronic device is in a folded state and one of the fifth and sixth radiating segments functions as a main radiating segment and the other as a parasitic radiating segment, the radiator in the parasitic radiating segment can provide enhanced parasitic radiation to the main radiating segment.

[0024] 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.

[0025] In the above embodiment, the fifth and sixth radiating segments are both parasitic radiating segments of the first radiating segment. When the current in the fifth and sixth radiating segments is in the same direction as the current in the first radiating segment, they can provide positive parasitic radiation to the first radiating segment, thereby improving antenna performance. The operating frequency of the first radiating segment (operating frequency A) can be in the WiFi 2.4G band.

[0026] 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.

[0027] 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.

[0028] In combination with the first aspect, in some embodiments, the second radiating segment is connected to a fifth tuning circuit.

[0029] 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.

[0030] 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.

[0031] In some embodiments, the first frequency may be the WiFi 2.4G frequency band mentioned in the description, and the second frequency band may be the GPS frequency band mentioned in the description.

[0032] In the above embodiment, the fifth tuning circuit can be used to make the second radiation segment have two specific frequencies, and the resonance at one of the frequencies can make the current distributed in the second radiation segment be 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 be 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).

[0033] In combination with the first aspect, in some embodiments, a second feeding point is further provided on the fifth radiating segment.

[0034] In some embodiments, the second feeding point may be the feeding point 104e in the specification. In the above embodiment, when a feeding point is provided on the fifth radiation segment, the antenna can have more operating frequency bands, thereby providing more communication modes for the electronic device.

[0035] 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.

[0036] In the above embodiment, although a second feeding point is set on the fifth radiation segment, the excitation source connected to the second feeding point does not emit an excitation signal. It can be understood that the electronic device does not use (does not turn on) the communication mode corresponding to the working frequency band of the fifth radiation segment.

[0037] 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.

[0038] In some embodiments, when the fifth radiating segment and the first radiating segment are located at a corner frame, and a feed point is provided in each of the first and fifth radiating segments, the first and fifth radiating segments can both serve as main radiating segments. The operating frequency of the first radiating segment (operating frequency A) can be in the Wi-Fi 2.4 GHz band. The operating frequency of the fifth radiating segment (operating frequency C) can be in the B41 band.

[0039] In the above embodiment, the electronic device can rationally allocate parasitic radiators within the first and fifth radiation segments, ensuring that each primary radiation segment has a specific parasitic radiation segment. This allows the electronic device to better utilize the communication mode corresponding to the operating frequency band of the first radiation segment and the communication mode corresponding to the fifth radiation segment. For example, by allocating radiation segments closest to the primary radiation segment as their primary parasitic radiation segments, the primary parasitic radiators of the first radiation segment may include the second and fourth radiation segments. The primary parasitic radiators of the fifth radiation segment may include the sixth radiation segment.

[0040] 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.

[0041] In the above embodiment, the third radiating segment is placed between the two main radiating segments (the first and fifth radiating segments). If the currents flowing in the first and fifth radiating segments are in different directions, a stronger current in the third radiating segment could adversely affect one of the main radiating segments. Therefore, a weaker current flowing in the third radiating segment can prevent interference with radiator A or radiator E.

[0042] In combination with the first aspect, in some embodiments, no current is distributed on the third radiation segment.

[0043] In the above embodiment, the third radiating segment is placed between the two main radiating segments (the first and fifth radiating segments). If the currents distributed in the first and fifth radiating segments are in different directions, a stronger current in the third radiating segment could adversely affect one of the main radiating segments. Therefore, the absence of current distribution in the third radiating segment can prevent interference with radiator A or radiator E.

[0044] In combination with the first aspect, in some embodiments, when the fifth radiation segment and the first radiation segment are specifically arranged on the horizontal border, the second current is distributed on the first radiation segment, and the second radiation segment, the fourth radiation segment and the sixth radiation segment are all distributed with currents in the same direction as the second current; and, the third current is distributed on the fifth radiation segment, and the third radiation segment is distributed with a current in the same direction as the third current.

[0045] In some embodiments, when the fifth radiating segment and the first radiating segment are arranged in a straight line, and a feed point is provided in each of the first and fifth radiating segments, the first and fifth radiating segments can both serve as main radiating segments. The operating frequency of the first radiating segment (operating frequency A) can be in the Wi-Fi 2.4 GHz band. The operating frequency of the fifth radiating segment (operating frequency C) can be in the B41 band.

[0046] 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 utilize 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, 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 segment, 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.

[0047] In combination with the first aspect, in some embodiments, a third feeding point is further provided on the third radiating segment.

[0048] 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.

[0049] 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 provided on the vertical frame, and the first radiating segment is specifically provided 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.

[0050] In some embodiments, when the third radiating segment and the first radiating segment are located at a corner frame, and a feed point is provided in each of the first and third radiating segments, the first and third radiating segments can both serve as main radiating segments. The operating frequency of the first radiating segment (operating frequency A) can be in the Wi-Fi 2.4 GHz band. The operating frequency of the third radiating segment (operating frequency C) can be in the B41 band.

[0051] In the above embodiment, the electronic device can rationally allocate parasitic radiators within the first and fifth radiation segments, ensuring that each primary radiation segment has a specific parasitic radiation segment. This allows the electronic device to better utilize the communication mode corresponding to the operating frequency band of the first radiation segment and the communication mode corresponding to the third radiation segment. For example, by allocating radiation segments closest to the primary radiation segment as their primary parasitic radiation segments, the primary parasitic radiators of the first radiation segment may include the second and fourth radiation segments. The primary parasitic radiators of the third radiation segment may include the fifth and sixth radiation segments.

[0052] 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.

[0053] In the above embodiment, feeding points are provided on both the fifth radiating segment and the first radiating segment, and the excitation sources connected to both feeding points emit excitation signals. This can be understood as the electronic device using (activating) the communication mode corresponding to the operating frequency band of the fifth radiating segment and the communication mode corresponding to the operating frequency band of the first radiating segment. Furthermore, in this case, the electronic device has good communication performance under both communication modes.

[0054] 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.

[0055] In the above embodiment, feeding points are provided on both the third radiating segment and the first radiating segment, and the excitation sources connected to both feeding points emit excitation signals. This can be understood as the electronic device using (activating) the communication mode corresponding to the operating frequency band of the fifth radiating segment and the communication mode corresponding to the operating frequency band of the first radiating segment. Furthermore, in this case, the electronic device has good communication performance under both communication modes.

[0056] 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 end is provided on the seventh radiating segment; there is a gap between the eighth radiating segment and the second radiating segment; and a grounding end is provided on the eighth radiating segment.

[0057] In some embodiments, the seventh radiation segment can be understood as the radiator G in the description, and the eighth radiation segment can be understood as the radiator H in the description.

[0058] In the above-described embodiment, the antenna branches are coupled via slots, resulting in more radiating ends. This allows the main radiating segment to have more parasitic radiating segments that function as forward radiators, further enhancing antenna performance. Furthermore, having more radiating segments allows for different operating frequencies to be set based on the different radiating segments.

[0059] 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.

[0060] In the above embodiment, the seventh radiating segment overlaps with the eighth radiating segment, thereby enhancing the coupling effect between the seventh and eighth radiating segments. For example, when the electronic device is in a folded state and one of the seventh and eighth radiating segments functions as a main radiating segment and the other as a parasitic radiating segment, the radiator in the parasitic radiating segment can provide better parasitic radiation to the main radiating segment.

[0061] In combination with the first aspect, in some embodiments, the current distributed on the seventh radiation segment and the second radiation segment has the same direction.

[0062] In the above embodiment, the seventh radiating segment and the second radiating segment can be regarded as a parasitic radiating segment with the second radiating segment as the main component.

[0063] In combination with the first aspect, in some embodiments, a fourth feeding point is further provided on the eighth radiating segment.

[0064] In some embodiments, the fourth feeding point may be the feeding point 104g in the specification. In the above embodiment, when a feeding point is provided on the seventh radiation segment, the antenna can have more operating frequency bands, thereby providing more communication modes for the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 shows a set of schematic diagrams of an electronic device in a folded state and an unfolded state;

[0066] Figure 2 shows the fixed arrangement in different antenna configurations;

[0067] FIG3 shows an example diagram of a first antenna structure;

[0068] FIG4 shows an exemplary arrangement of radiators in an electronic device in the first antenna structure;

[0069] FIG5A shows a comparison diagram of current directions in a wifi single-state scenario and a low-performance scenario 11;

[0070] FIG5B shows an exemplary current distribution simulation diagram when the electronic device is in a wifi single state;

[0071] FIG6 shows a schematic diagram of a preset frequency modulation rule 21a;

[0072] FIG7 shows a schematic diagram comparing frequency modulation rules involved in a single-state Wi-Fi scenario and a low-performance scenario 11;

[0073] FIG8 shows a schematic diagram of frequency control circuit settings involved in a Wi-Fi single-state scenario and a low-performance scenario 11;

[0074] FIG9 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a Wi-Fi single-state scenario and a low-performance scenario 11 obtained when performing a simulation effect test on an electronic device;

[0075] FIG10 shows a comparison diagram of current directions in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12;

[0076] FIG11 shows 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 scenario where WiFi and B41 coexist;

[0077] FIG12 shows a schematic diagram of a preset frequency modulation rule 21b;

[0078] FIG13 shows a schematic diagram comparing the frequency modulation rules in a Wi-Fi and B41 coexistence scenario and a low-performance scenario 12;

[0079] FIG14 shows a schematic diagram of frequency control circuit settings involved in a Wi-Fi single-state scenario and a low-performance scenario 12;

[0080] FIG15 is a comparison diagram of the efficiency of antenna 2 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12 obtained during the simulation effect test of the electronic device;

[0081] FIG16 is a comparison diagram of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained during the simulation effect test of the electronic device;

[0082] FIG17 shows an example diagram of a second antenna structure;

[0083] FIG18 shows an exemplary arrangement of the first antenna structure in an electronic device;

[0084] FIG19A shows a comparison diagram of current directions in a wifi single-state scenario and a low-performance scenario 21;

[0085] FIG19B shows an exemplary current distribution simulation diagram when the electronic device is in a wifi single state;

[0086] FIG20 shows a schematic diagram of a preset frequency modulation rule 22a;

[0087] FIG21 shows a schematic diagram comparing frequency modulation rules in a wifi single-state scenario and a low-performance scenario 21;

[0088] FIG22 shows a schematic diagram of frequency control circuit settings involved in a Wi-Fi single-state scenario and a low-performance scenario 21;

[0089] FIG23 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a Wi-Fi single-state scenario and a low-performance scenario 21 obtained during a simulation effect test of an electronic device;

[0090] FIG24 shows a schematic diagram of a target current direction 22;

[0091] FIG25 shows 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;

[0092] FIG26 shows a schematic diagram of a preset frequency modulation rule 22b;

[0093] FIG27 shows a schematic diagram comparing frequency modulation rules in a Wi-Fi and B41 coexistence scenario and a low-performance scenario 22;

[0094] FIG28 shows a schematic diagram of the frequency control circuit configuration involved in the coexistence scenario of Wi-Fi and B41 and the low-performance scenario 22;

[0095] FIG29 is a comparison diagram of the efficiency of antenna 2 and antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 22 obtained during a simulation effect test of an electronic device;

[0096] FIG30 is a comparison diagram of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained during the simulation effect test of the electronic device;

[0097] FIG31 shows an example diagram of a third antenna structure;

[0098] FIG32 shows a target current direction 31 involved in a wifi single-state scenario;

[0099] FIG33 shows an exemplary current distribution simulation diagram of each radiator when the electronic device is in a Wi-Fi single-state scenario;

[0100] FIG34 shows a schematic diagram of a preset frequency modulation rule 23a;

[0101] FIG35 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a Wi-Fi single-state scenario obtained during a simulation effect test of an electronic device;

[0102] FIG36 shows a target current direction 32 involved in the scenario where wifi and B41 coexist;

[0103] 37A and 37B show exemplary current distribution simulation diagrams of each radiator when the electronic device is in a scenario where Wi-Fi and B41 coexist;

[0104] FIG38 shows a frequency diagram of the radiator mainly responsible for the B41 frequency band;

[0105] FIG39 is a comparison chart of the efficiency of an electronic device in a Wi-Fi and B41 coexistence scenario and a low-performance scenario 12 obtained during a simulation effect test;

[0106] FIG40 shows an exemplary antenna structure involved in a MHB single-state scenario;

[0107] FIG41 shows an exemplary frequency modulation rule involved in the MHB single-state scenario;

[0108] FIG42 shows a schematic diagram of another added frequency control circuit;

[0109] FIG43 and FIG44 show examples of reasons for improving antenna performance;

[0110] FIG45 shows a schematic diagram of current distribution of radiator A and radiator D when the electronic device is in a wifi single state;

[0111] FIG46 shows a schematic diagram of current distribution of radiator A and radiator D when the electronic device is in a wifi single state;

[0112] FIG47 is a schematic diagram showing the current distribution of radiators A to F when the electronic device is in a wifi and B41 coexistence state;

[0113] Figure 48 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

[0114] The terms used in the following examples of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in the specification and appended claims of the present application, the singular expressions "a," "an," "said," "above," "the," and "this" are intended to include plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the present application refers to and encompasses any or all possible combinations of one or more of the listed items.

[0115] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.

[0116] 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 orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 an indirect connection through an intermediate medium, or it can be a communication between the internal parts of 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.

[0117] 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, etc.

[0118] 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 responsible for providing communication mode A (antenna A) is low, it will cause the folding screen electronic device to have poor communication capabilities when communicating with other electronic devices in communication mode A. To address this problem, 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.

[0119] The antenna set includes at least two antennas, 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 description will be made using the example of the antenna set including antennas 1 to 3.

[0120] It should be understood that the antennas in the antenna set can have different antenna structures. When the antenna structures are different, the foldable screen electronic device can readjust the operating frequency of antenna A and its coupled antennas according to different preset frequency modulation rules 2 to improve the communication capability of the foldable screen electronic device when communicating with other electronic devices using communication mode A.

[0121] The differences between the two antenna structures include, but are not limited to: different arrangements of radiators in the two antenna structures, or different frequency control circuits connected to the radiators in the two antenna structures.

[0122] The arrangement of the radiators in the antenna assembly includes but is not limited to the following two arrangements:

[0123] Arrangement 1: 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.

[0124] Arrangement 2: The radiators are arranged in a zigzag pattern (e.g., L-shaped). For example, the radiators can be placed in the corners of a foldable screen electronic device. That is, some of the radiators in the antenna are placed in the horizontal frame, while others are placed in the vertical frame.

[0125] The coupling between radiators in an antenna includes coupling through gaps.

[0126] In the following text, for the sake of convenience, the foldable screen electronic device will be referred to as the electronic device.

[0127] FIG1 shows a set of schematic diagrams of an electronic device in a folded state and an unfolded state.

[0128] As shown in FIG1 (1), a schematic diagram of an electronic device in a folded state is shown. The electronic device includes a first device body 100, a second device body 200, a hinge 300, a first floor panel (not shown in FIG1), a second floor panel (not shown in FIG1), a first main board (not shown in FIG1), and a second main board (not shown in FIG1).

[0129] The first device body 100 and the second device body 200 are rotatably connected via a hinge 300, allowing the electronic device to switch between an unfolded state and a folded state. A first floor panel is provided in the first device body 100, and a second floor panel is provided in the second device body 200. A first main board and a second main board are respectively provided in the first device body 100 and the second device body 200.

[0130] 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 will 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 scope of protection of this application.

[0131] In the embodiments of this application, the electronic device is illustrated as a foldable mobile phone. Of course, those skilled in the art will understand that in other alternative embodiments, the electronic device may also be a foldable tablet computer or a foldable smartwatch or other foldable screen electronic device, and this does not limit the scope of protection of this application.

[0132] FIG1 (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.

[0133] In combination with the contents shown in (1) and (2) in Figure 1, the radiator can be set along the frame of the electronic device. When the radiator is arranged in a straight line, it can be set in the frame included in area 301. When the radiator is arranged in a broken line (for example, L-shaped), it can be set 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 broken lines, or partly straight lines and partly broken lines. Among them, area 301 can include area 301a and area 301b. Area 302 can include area 302a and area 302b.

[0134] It should be understood that in addition to the aforementioned components, the electronic device may also include other components. Among them, 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.

[0135] Figure 2 shows the fixed arrangement in different antenna configurations.

[0136] The following describes in detail the fixed settings in different antenna structures with reference to FIG. 1 and FIG. 2 .

[0137] At least one antenna includes two antenna branches, one of which (antenna branch 1) is located in the first device body 100, and the other (antenna branch 2) is located in the second device body 200. As shown in FIG2 (1) and FIG2 (2), antenna branch 1 includes radiators A and C, and antenna branch 2 includes radiators B and D. Radiator A is connected to the first ground plane in the first device body 100 via a ground terminal 102a, and radiator C is connected to the first ground plane in the first device body 100 via a ground terminal 102c. Radiator B is connected to the second ground plane in the second device body 200 via a ground terminal 202b, and radiator D is connected to the second ground plane in the second device body 200 via a ground terminal 202d.

[0138] 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 ground ends being connected but not including the radiators.

[0139] When the electronic device is in the folded state, radiators A and 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. Radiators C and 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 radiators A and B, meaning that the projection of radiator A on the second device body 200 overlaps with radiator B. There is a projection overlap between radiators C and D, meaning that the projection of radiator C on the second device body 200 overlaps with radiator D. There is no projection overlap between radiators B and C, meaning that 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 radiators A and D.

[0140] Among them, the open end can be called an open end.

[0141] 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 set on the first main board in the first device body 100.

[0142] Radiators A-D can couple with radiators of other antennas through slots. Here, radiators A-D are placed in Antenna 2 as an example. Antenna 1 includes at least radiators E and F; Antenna 3 includes at least radiators G and H. In some possible scenarios, 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.

[0143] In some possible cases, when the electronic device is in the folded state, there is a projection overlap between radiators E and F, that is, the projection of radiator E on the second device body 200 overlaps with radiator F. There is also a projection overlap between radiators G and H, that is, the projection of radiator G on the second device body 200 overlaps with radiator H.

[0144] It should be understood here that the four radiators shown in (1) of Figure 2 are arranged in a straight line. In other cases, the four radiators can also be arranged in other ways. Referring to (2) of Figure 2, the four radiators can be arranged in a broken line, and the four antennas still meet the fixed settings involved above. Among them, radiator A and radiator C can be placed on different types of frames. For example, radiator A is placed on the horizontal frame, and radiator C is placed on the vertical frame. Radiator B and radiator D can be placed on different types of frames. For example, radiator B is placed on the horizontal frame, and radiator D is placed on the vertical frame.

[0145] It should be understood here that the antenna structure diagram shown in FIG2 is drawn based on a perspective that is convenient for describing the scheme, and the perspective shown in FIG2 does not actually exist. In actual practice, 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 (2) in FIG4 below). The specific overlapping relationship can 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 perspectives. 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 perspective. 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, example figures that also adopt this display method also include: FIG3, FIG5A, FIG5B, etc. Those skilled in the art can determine the actual position relationship of each radiator in the antenna branch in combination with the relevant example figures and text descriptions, which should not constitute a limitation on this application.

[0146] 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 the folded state.

[0147] 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, the electronic device is assumed to be in a folded state and no text is used to emphasize this.

[0148] The first antenna structure is described in detail below.

[0149] FIG3 shows an exemplary diagram of a first antenna structure.

[0150] As shown in (1) of FIG3 , in the first antenna structure, the antenna 2 includes radiators arranged in a zigzag pattern, and the antenna 2 may include radiators A, C, B, and D, and the four radiators meet the fixed arrangement mentioned above. 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. 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. Radiator B is placed on the frame 1 of the second device body 200, and radiator D is placed on the frame 2 of the second device body 200. The ground terminal 202b of radiator B and the ground terminal 202d of radiator D are arranged close to and opposite each other. The frame between the ground terminals 202b and 202d includes the frame at the corner of the second device body 200. Radiators A and D meet the aforementioned fixed configuration requirements. For details on the fixed configuration, please refer to the previous content and will not be repeated here.

[0151] 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.

[0152] In the first antenna structure, antenna 1 may include a radiator E and a radiator F. Radiator E is placed on the frame 2 of the first device body 100 and is connected to a radio frequency source. For example, the feed point 104e of radiator E is connected to the radio frequency source 2 of the electronic device. Radiator F is placed on the frame 2 of the second device body 200. When the electronic device is in a folded state, radiator E and radiator F are parallel to each other, and the open end 103e of radiator E and the open end 203f of radiator F face the same direction. The ground end 102e of radiator E is connected to the first floor in the first device body 100, and the ground end 202f of radiator F is connected to the second floor in the second device body 200. The radio frequency source 2 is different from the radio frequency source 1.

[0153] In the first antenna structure, antenna 3 may include a radiator G and a radiator H. Radiator G is placed on the frame 1 of the first device body 100 and is connected to a radio frequency source. For example, the feed point 104g of radiator G is connected to the radio frequency source 3 of the electronic device. Radiator H is placed on the frame 1 of the second device body 200. When the electronic device is in a folded state, radiator G and radiator H are parallel to each other, and the open end 103g of radiator G and the open end 203h of radiator H face the same direction. The ground end 102g of radiator G is connected to the first floor in the first device body 100, and the ground end 202h of radiator H is connected to the second floor in the second device body 200. RF source 3 is different from RF source 2 and RF source 1.

[0154] Antenna 2 is coupled to antenna 1 and antenna 3. The coupling between antenna 2 and antenna 1 includes: radiator C is coupled to radiator E via slot 105c, with open end 103c of radiator C positioned opposite open end 103e of radiator E. Radiator D is coupled to radiator F via slot 105d, with open end 203d of radiator D positioned opposite open end 203f of radiator F.

[0155] The coupling between antenna 2 and antenna 3 includes: radiator A is coupled to radiator G via slot 105a, with open end 103g of radiator G positioned opposite open end 103a of radiator A. Radiator B is coupled to radiator H via slot 105b, with open end 203b of radiator B positioned opposite open end 203h of radiator H.

[0156] When antenna 2 is coupled with antenna 1 and antenna 3, antenna 2 can share radiators C, D, and F with antenna 1. Antenna 2 can share radiators B and H with antenna 1. That is, antenna 2 can be said to include radiators A through D, as well as radiators H and F. Antenna 1 includes radiators E, F, C, and D. Antenna 3 includes radiators G, H, and B.

[0157] In addition to the structural settings 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 settings.

[0158] Structural setting 11: The length of the radiator G is longer than the length of the radiator H.

[0159] Structural setting 12: The length of the radiator E is longer than the length of the radiator F.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] As shown in (2) of FIG. 3 , 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.

[0164] The connection point 106c of the radiator C is connected to the first floor panel in the first device body 100 via the frequency control circuit 400c. The frequency control circuit 400c includes a switch device 410c and multiple 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 switch unit between closed (ON) and open (OFF). For example, the multiple 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, which is used to control whether the frequency modulation branch 421 is conductive. The frequency modulation branch 422 is connected to the switch unit s2, which is used to control whether the frequency modulation branch 422 is conductive. When the switch device 410c controls the switch unit s1 to be closed (ON) and controls the switch unit s2 to be open (OFF), it indicates that the switch device 410c is connected to the frequency modulation branch 421 and is not connected to the frequency modulation branch 422. Other switching conditions of the switch device 410c can be referred to the above description and will not be repeated here.

[0165] In some possible cases, the connection point 106 c is disposed near the open end 103 c of the radiator C.

[0166] The feed point 104e of the radiator E is connected to the first floor panel in the first device body 100 via the frequency control circuit 400e. The frequency control circuit 400e includes a switch device 410e and multiple 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 can select at least one frequency modulation branch E11 by switching the switch unit between closed (ON) and open (OFF). For example, the multiple frequency modulation branches E11 may include a frequency modulation branch 423 and a frequency modulation branch 424. The frequency modulation branch 423 is connected to the switch unit s3, which is used to control whether the frequency modulation branch 423 is conductive. The frequency modulation branch 424 is connected to the switch unit s4, which is used to control whether the frequency modulation branch 424 is conductive. When the switch device 410e controls the switch unit s3 to be closed (ON) and controls the switch unit s4 to be open (OFF), it indicates that the switch device 410e is connected to the frequency modulation branch 423 and is not connected to the frequency modulation branch 424. Other switching conditions of the switch device 410e can be referred to the above description and will not be repeated here.

[0167] In some possible cases, the feeding point 104e is disposed near the open end 103e of the radiator E.

[0168] The connection point 106d of the radiator D is connected to the second floor panel in the second device body 200 via the frequency control circuit 400d. The frequency control circuit 400d includes a switch device 410d and multiple 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 switch unit between closed (ON) and open (OFF). For example, the multiple frequency modulation branches D1 may include frequency modulation branch 420, frequency modulation branch 425, and frequency modulation branch 426. Frequency modulation branch 425 is connected to switch unit s5, which is used to control whether frequency modulation branch 425 is conductive. Frequency modulation branch 426 is connected to switch unit s6, which is used to control whether frequency modulation branch 426 is conductive. When switch device 410d controls switch unit s5 to be closed (ON) and switches switch unit s6 to be open (OFF), it indicates that switch device 410d is connected to frequency modulation branch 425 and is not connected to frequency modulation branch 426. When switch unit s5 and switch unit s6 are both open (OFF), it indicates that switch device 410d is connected to frequency modulation branch 420. Other switching conditions of switch device 410d can be referred to the above description and will not be repeated here.

[0169] In some possible cases, the connection point 106d is located near the open end 203d of the radiator D.

[0170] The connection point 106f of the radiator F is connected to the second floor panel in the second device body 200 via the frequency control circuit 400f. The frequency control circuit 400f includes a switch device 410f and multiple 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 can select at least one frequency modulation branch F by switching the switch unit between closed (ON) and open (OFF). For example, the multiple frequency modulation branches F may include frequency modulation branch 429, frequency modulation branch 427, and frequency modulation branch 428. Frequency modulation branch 427 is connected to switch unit s7, which is used to control whether frequency modulation branch 427 is conductive. Frequency modulation branch 428 is connected to switch unit s8, which is used to control whether frequency modulation branch 428 is conductive. When switch device 410f controls switch unit s7 to be closed (ON) and switches switch unit s8 to be open (OFF), it indicates that switch device 410f is connected to frequency modulation branch 427 and is not connected to frequency modulation branch 428. When switch unit s7 and switch unit s8 are both open (OFF), it indicates that switch device 410f is connected to frequency modulation branch 429. Other switching conditions of switch device 410f can be referred to the above description and will not be repeated here.

[0171] In some possible cases, the connection point 106f is located near the open end 203f of the radiator F.

[0172] 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. Lumped elements may differ in different matching branches, including differences in type, parameter values, or quantity of the lumped elements.

[0173] FIG4 shows an exemplary arrangement of radiators in an electronic device in the first antenna structure.

[0174] For ease of observation, the relevant content involved in (1) in Figure 4 is shown using the electronic device in the unfolded state as an example, and (2) in Figure 4 is an exemplary arrangement of each radiator when the electronic device is in the folded state.

[0175] As shown in Figure 4, radiators G, A, C, and E are placed on the first device body 100 of the electronic device. Radiators A and G are placed on the horizontal frame, while radiators C and E are placed on the vertical frame, that is, radiators A and C are placed on the frame at the corners of the first device body 100.

[0176] 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, while radiators D and F are placed in the vertical frame. That is, radiators D and B are placed in the frame at the corners of the second device body 200. The first device body 100 and the second device body 200 are connected by a hinge 300.

[0177] 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.

[0178] When the antenna structure is the first antenna structure, the operating 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. 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 operating frequency band of the 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 operating frequency band of the 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.

[0179] The medium-high frequency (MHB) band is typically 1.700 GHz to 2.700 GHz. The N78 band is typically 3.400 GHz to 3.600 GHz. The GPS band is typically 1.2280 GHz to 1.6750 GHz. The 2.4G Wi-Fi band is typically 2.400 GHz to 2.4835 GHz. The 5G Wi-Fi band is typically 2.484 GHz to 4.915 GHz. 2G / 3G / 4G / 5G communications can be collectively referred to as cellular network communications.

[0180] It should be understood that the operating frequency bands of the antennas and the communication modes provided are examples. Different operating frequency bands and communication modes may be provided in different situations, and the embodiments of the present application do not limit this.

[0181] 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 operating frequency of antenna 2 is the WiFi 2.4G frequency band. 5G WiFi communication indicates that the operating frequency of antenna 2 is the WiFi 5G frequency band.

[0182] By adjusting the operating frequencies of antennas 1 to 3 according to the preset frequency modulation rule 11, each antenna can be made to resonate at at least one target operating frequency to provide various communication modes for electronic devices, including one or more of 2G / 3G / 4G / 5G communication, GPS communication, 2.4G wifi communication, and 5G wifi communication. Among them, at least one target operating frequency corresponding to an antenna belongs to the operating frequency band of the antenna. Among them, the preset frequency modulation rule 11 may include the following frequency modulation rule 11a and frequency modulation rule 11b. 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 relevant content in Figure 7. The preset frequency modulation rule 11b can refer to the following description of the relevant content in Figure 13.

[0183] However, when the operating frequencies of antennas 1 to 3 are adjusted according to the preset frequency modulation rule 11, the following low-performance scenario may occur: when the performance of the antenna (antenna A) responsible for providing communication mode A is low, the folding screen electronic device may 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 these low-performance scenarios.

[0184] Low performance scenario 11:

[0185] When the operating frequencies of antennas 1 and 3 are adjusted according to preset frequency modulation rule 11a, and the electronic device has 2.4 GHz Wi-Fi communication enabled and cellular network communication disabled, antenna 2 has low performance when operating in the 2.4 GHz Wi-Fi frequency band, resulting in poor communication capabilities when the electronic device communicates with other electronic devices in Wi-Fi-only mode. Wi-Fi-only mode refers to when 2.4 GHz Wi-Fi communication is enabled and cellular network communication is disabled.

[0186] It should be understood that when an electronic device is in Wi-Fi-only mode, it can maintain communication with other electronic devices via 2.4G Wi-Fi communication, thus not using cellular network communication. However, the electronic device still has the ability to use cellular network communication. In other words, at this time, the cellular network communication mode can be enabled, and the electronic device can use services such as making calls via the cellular network communication mode.

[0187] Among them, the reason why antenna 2 has low performance when operating in the WiFi 2.4G frequency band in low-performance scenario 11 can be referred to the following description of FIG. 7 and will not be repeated here.

[0188] The following describes the improvement method and related content for low performance scenario 11.

[0189] For low-performance scenario 11, based on the first antenna structure in this application, the electronic device can readjust the operating frequency of antenna 2 and the 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). The target current direction 11 is the current direction that satisfies the wifi single state when the first antenna structure is adopted. The 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, the antenna 1 is the 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 operating frequency of the antenna 1 can be adjusted to use the antenna 1 to assist antenna 2 in improving performance.

[0190] When the electronic device is in the wifi single mode, the scenario in which the operating frequencies of the antenna 2 and the antenna 1 coupled thereto are readjusted according to the preset frequency modulation rule 21a can be called a wifi single mode scenario.

[0191] 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 antennas can also be adjusted to use the other antennas 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.

[0192] It should also be understood that it is also possible not to use antennas other than antenna 2 (e.g., antenna 1) to assist antenna 2 in improving performance. The performance of antenna 2 can be improved by some or all of the radiators in antenna 2 cooperating with each other.

[0193] First, the reason for generating the target current direction is described.

[0194] It should be understood that the reasons for generating the target current direction may include: when the parasitic radiators in Antenna 1 and Antenna 2 that meet condition 1 generate current in the same direction as the main radiator, and when the parasitic radiators that meet condition 2 generate current in the opposite direction to the main radiator, the performance of Antenna 2 can be improved. The more parasitic radiators that meet condition 1 and generate current in the same direction as the main radiator, or the more parasitic radiators that meet condition 2 and generate current in the opposite direction to the main radiator, the greater the performance improvement of Antenna 2. The current generated by the radiator that meets condition 3 should be weak (close to no current) to avoid adverse effects on the main radiator.

[0195] For a description of the phenomenon that the more parasitic radiators that meet condition 1 and the current generated on the main radiator are in the same direction, the more the performance of antenna 2 (including the main radiator) is improved, please refer to the description of Figure 43 and its related contents below, which will not be repeated here. For a description of the phenomenon that the more parasitic radiators that meet condition 2 and the current generated on the main radiator are in opposite directions, the more the performance of antenna 2 is improved, please refer to the description of Figure 44 and its related contents below, which will not be repeated here.

[0196] It should be understood here that a primary radiator includes a radiator whose operating frequency falls within the frequency band corresponding to the communication mode enabled by the electronic device. Parasitic radiators include radiators other than the primary radiator. For example, a radiator without a feed point, or a radiator with a feed point but the RF source connected to the feed point does not emit an RF signal. For example, when the electronic device is in WiFi-only mode, the primary radiator may be radiator A, whose operating frequency falls within the WiFi 2.4 GHz band. All radiators in antenna 1 can serve as parasitic radiators to enhance the performance of radiator A, including radiator E, which has a feed point. When the electronic device is in WiFi and B41 coexistence mode, radiator A in antenna 2 serves as the primary radiator, whose operating frequency falls within the WiFi 2.4 GHz band. Radiator E in antenna 1 serves as the primary radiator, whose operating frequency falls within the B41 band. Other radiators can serve as parasitic radiators of either radiator A or radiator E. Some radiators can also serve as parasitic radiators of both radiator A and radiator E. For specific details, please refer to the relevant description below and will not be repeated here.

[0197] It should be understood here that in some possible cases, the same radiator can serve as a parasitic radiator and also as a main radiator, depending on the relationship between the distributed current in the radiator and other radiators.

[0198] Among them, parasitic radiators that meet condition 1 include parasitic radiators on the same side as the main radiator, or parasitic radiators that are parallel to the main radiator. Parasitic radiators that meet condition 2 include parasitic radiators on the opposite side of the main radiator, not parallel to the main radiator, and relatively close to (e.g., closest to) the main radiator. Parasitic radiators that meet condition 3 include parasitic radiators on the opposite side of the main radiator, not parallel to the main radiator, and relatively far from (not closest to) the main radiator. Among them, two radiators on the same side means that both radiators are placed on the first device body 100 or both radiators are placed on the second device body 200. Two radiators on opposite sides means that one radiator is placed on the first device body 100 and the other is placed on the second device body 200. Two radiators being parallel to each other means that both radiators are on the horizontal frame or on the vertical frame. Two radiators not being parallel to each other means that one radiator is on the horizontal frame and the other radiator is on the vertical frame. In combination with the above-mentioned related content and with reference to FIG3 , when the main radiator is radiator A, the parasitic radiators that meet condition 1 may include: radiator C, radiator B, radiator H, and radiator E. The parasitic radiator that meets condition 2 may include radiator D. The parasitic radiator that meets condition 3 may include radiator F.

[0199] In the following, 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.

[0200] After generating current, a primary radiator can stimulate a parasitic radiator coupled to it to generate current. When a parasitic radiator is simultaneously excited by two or more primary radiators, it can generate (distribute) current in two directions. The primary current direction generated by the parasitic radiator can be determined primarily by the parasitic radiator and the primary radiator with which it is most highly coupled. In some possible scenarios, the closer a parasitic radiator is to a primary radiator, the higher the degree of coupling. If the parasitic radiator is close to the ground terminal of the primary radiator, the distance can be zero.

[0201] In the antenna structure provided herein, the direction of the current generated by each radiator exhibits the following characteristics: the direction of the current generated by a parasitic radiator can be primarily determined by the parasitic radiator and the primary radiator with which it is most highly coupled. For example, the direction of the current generated by the parasitic radiator can be determined by its positional relationship with the primary radiator and its frequency relationship with the primary radiator.

[0202] As shown in Table 1, if the main radiator and the parasitic radiator are on the same side and their grounded ends are close, if the main radiator's frequency is lower than that of the parasitic radiator, the currents in the two radiators are in opposite directions; if the main radiator's frequency is higher than that of the parasitic radiator, the currents in the two radiators are in the same direction. If the main radiator and the parasitic radiator are on the same side and their non-grounded ends are close (for example, with their open ends facing each other), if the main radiator's frequency is lower than that of the parasitic radiator, the currents in the two radiators are in the same direction; if the main radiator's frequency is higher than that of the parasitic radiator, the currents in the two radiators are in opposite directions. If the main radiator and the parasitic radiator are on opposite sides, the parasitic radiator is referred to as the opposite-side parasitic radiator of the main radiator. In this case, if the main radiator's frequency is lower than that of the parasitic radiator, the currents in the two radiators are in the same direction; if the main radiator's frequency is higher than that of the parasitic radiator, the currents in the two radiators are in opposite directions.

[0203] Table 1

[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 ground 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-ground 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 above Table 1 and Table 2 here, and will not be repeated here.

[0205] Table 2

[0206] It should be understood that for two parasitic radiators located 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 a preset length value 1, and the electrical length of the other parasitic radiator (parasitic radiator 2) is greater than the preset length value 1, then parasitic radiator 2 and parasitic radiator 1 can be considered a single parasitic radiator with parasitic radiator 2 as the primary radiator. In this case, the current direction of parasitic radiator 1 is not determined by the primary radiator with the highest degree of coupling to it, but is the same as the current direction of parasitic radiator 2. The current direction of parasitic radiator 2 is determined by the primary radiator with the highest degree of coupling to it.

[0207] It should also be understood that, when one of the two radiators is located in a horizontal frame and the other is located in a vertical frame, the currents generated by the two radiators being in the same direction includes: after the radiators arranged in a zigzag pattern are equivalent to being arranged in a straight line, the currents generated by the two radiators being in the same direction. The currents generated by the two radiators being in opposite directions includes: after the radiators arranged in a zigzag pattern are equivalent to being arranged in a straight line, the currents generated by the two radiators being in opposite directions.

[0208] FIG5A shows a comparison diagram of current directions in a Wi-Fi single-state scenario and a low-performance scenario 11. ...

[0209] FIG5B shows an exemplary current distribution simulation diagram when the electronic device is in the wifi single mode.

[0210] Based on the aforementioned reasons for generating the target current direction, the target current direction 11 proposed for the Wi-Fi single-state scenario will be described in detail below with reference to FIG. 5A and FIG. 5B .

[0211] FIG5A (1) shows a schematic diagram of a target current direction 11. FIG5A (1) shows a target current direction 11.

[0212] 5A ( 1 ), it shows the desired current direction (target current direction 11 ) of each radiator in antenna 1 and antenna 2 when the operating frequency of antenna 2 and antenna 1 coupled thereto are readjusted according to the preset frequency modulation rule 21 a .

[0213] When the electronic device is in Wi-Fi single mode, antenna 2 provides 2.4G Wi-Fi communication for the electronic device. Radiator A is the primary radiator. Radiators H, B, D, F, C, and E are parasitic radiators. Based on the foregoing, radiators H, B, C, and E are Class I radiators, generating the same desired current direction as radiator A. Radiator D is a Class II radiator, generating the opposite desired current direction to radiator A. Radiator F is a Class III radiator, generating a weaker desired current to avoid interfering with radiator A.

[0214] In some possible cases, the current of the radiator F is weaker, including that the current of the radiator F is weaker than that of the radiator A.

[0215] It should be understood that the current direction of radiator A (main radiator) is the direction shown in (1) in Figure 5A as an example for explanation. In actual situations, the current direction of radiator A can also be opposite to the direction shown in (1) in Figure 5A. This application does not limit this.

[0216] FIG5A (2) shows the current direction in the low performance scenario 11.

[0217] The following describes in detail the reasons why the performance of the antenna 2 is improved when the electronic device is in the WiFi single mode after using the frequency modulation rules involved in this application, in combination with (2) in Figure 5A and (1) in the aforementioned Figure 5A.

[0218] Referring to (2) in FIG. 5A , 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.

[0219] Reason 11-1 for poor performance: Radiator D is a Class II radiator, but the current of radiator D flows in the same direction as the current of radiator A. The resonance generated by the current flowing in the same direction as radiator A adversely affects radiator A.

[0220] Combining (1) and (2) in FIG5A , we can see that for 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 low performance reason 11-1 is reflected in the white circle ① in FIG5A .

[0221] It should be understood that the reason for changing the current of radiator D from flowing in the same direction as the current of radiator A to flowing in the opposite direction is that, although radiator D is a parasitic radiator of radiator A, it is located on the opposite side of radiator A, is not parallel to radiator A, and is relatively close to radiator A. Therefore, when the currents of radiator D and radiator A flow in opposite directions, the resonance generated by the resonance has a positive parasitic radiation effect on radiator A, thereby improving the performance of antenna 2.

[0222] Reason 11-2 for low performance: Radiator F is a third-category radiator, but its current is relatively strong, which adversely affects radiator A.

[0223] Combining (1) and (2) in FIG5A , it can be seen that for low performance reason 11-2, there is a second change: the current of radiator F is changed from strong to weak to reduce the adverse effect on antenna 2, thereby improving the performance of antenna 2. The first change for low performance reason 11-2 is reflected in the white circle ② in FIG5A .

[0224] 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 of radiator A, which will cause the performance of antenna 2 to deteriorate.

[0225] Combining (1) and (2) in FIG5A , we can see that there is a third change to address the low performance reason 11-3: the current generated by radiators C and E changes from being in the opposite direction to that of radiator A (the main radiator) to being in the same direction, which can improve the performance of antenna 2. The third change to address the low performance reason 11-3 is reflected in the white circle ③ in FIG5A .

[0226] Figure 5B shows an exemplary current distribution simulation diagram when the electronic device is in the Wi-Fi single mode, which corresponds to the target current direction 11 shown in (1) of Figure 5A. Among radiators B through 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. Furthermore, the current of radiator F is relatively weak.

[0227] Next, the preset frequency modulation rule 21 a involved in adjusting the target current direction 11 will be described.

[0228] 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.

[0229] The preset frequency modulation rule 21a may include: for the first antenna structure, when the electronic device is in the Wi-Fi single mode, adjusting the operating frequency (denoted as operating frequency A) of radiator A (the main radiator) to belong to the Wi-Fi 2.4G frequency band, for example, operating frequency A may be 2.4 GHz. Adjusting the operating frequency of radiator C to be less than or close to operating frequency A. Adjusting the operating frequency of radiator D to be less than or close to operating frequency A. Setting the electrical length of radiator B to be greater than a preset length value of 1, and the electrical length of radiator H to be less than a preset length value of 1, so that radiators B and H can be considered a parasitic radiator with radiator B as the main radiator and radiators H and B having the same frequency, and adjusting the operating frequency of radiator B to be greater than or close to operating frequency A. Adjusting the operating frequency of radiator E to be greater than or close to operating frequency A. Adjusting the operating frequency of radiator F to be greater than operating frequency A, wherein the operating frequency of radiator F is significantly different from operating frequency A (for example, the largest among the frequency bands corresponding to the radiators), so that the desired current generated by radiator F is weaker to avoid interference with radiator A.

[0230] In some possible cases, the operating frequency of the radiator closer to radiator A (the 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 Wi-Fi 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.

[0231] 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 considered 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 aforementioned 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 aforementioned reasons for generating the target current direction, thereby improving the performance of antenna 2.

[0232] It should also be understood that the aforementioned description uses radiators C, D, B, H, E, and F as parasitic radiators of radiator A (the main radiator). By adjusting the operating frequency of each parasitic radiator, appropriate parasitic resonances are generated after the main radiator resonates to improve the performance of antenna 2. In actual practice, more or fewer parasitic radiators than described above may be used to generate parasitic resonances to improve the performance of antenna 2. For example, in other possible scenarios, only radiators C, D, and B may be used as parasitic radiators of radiator A (the main radiator), generating appropriate parasitic resonances after the main radiator resonates to improve the performance of antenna 2. In this case, the preset frequency modulation rule 21a may include: for the first antenna structure, when the electronic device is in the WiFi single mode, adjusting the operating frequency of radiator A (the main radiator) (denoted as operating frequency A) to belong to the WiFi 2.4G frequency band, for example, operating frequency A may be 2.4 GHz. Adjusting the operating frequency of radiator C to be less than and close to operating frequency A. The operating frequency of radiator D is adjusted to be less than and close to the operating frequency A. The operating frequency of radiator B is greater than and close to the operating frequency A. In some possible cases, when the operating frequencies of radiator C, radiator D, radiator B, and radiator A (main radiator) are from low to high, the radiators involved may be, in order: radiator C, radiator D, radiator A (main radiator), and radiator B. In this case, the currents distributed in radiators B and radiator C are in the same direction as that of radiator A, and the current distributed in radiator D is in the opposite direction to that of radiator A.

[0233] FIG6 shows a schematic diagram of a preset frequency modulation rule 21a.

[0234] Figure 6 shows the S-parameter effect curves of antenna 1 and antenna 2 in a Wi-Fi single-state scenario, obtained during a simulation test of an electronic device. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0235] Figure 6 includes two curves: the "Antenna 2 - Wi-Fi Single Mode" curve, referred to as curve Q61, and the "Antenna 1 - Wi-Fi Single Mode" curve, referred to as curve Q62. Curve Q61 shows the frequency relationship between the radiators in Antenna 2 and their corresponding frequencies in the Wi-Fi Single Mode scenario. Curve Q62 shows the frequency relationship between the radiators in Antenna 1 and their corresponding frequencies in the Wi-Fi Single Mode scenario.

[0236] The letters AF in FIG6 represent radiators A to F, respectively. As can be seen from FIG6 , the radiators involved in the wifi single-state scenario from low to high frequency can be: radiator C (about 2.0 GHz), radiator D (about 2.2 GHz), radiator A (about 2.4 GHz), radiator B and radiator H (about 2.6 GHz), radiator E (about 2.8 GHz), and radiator F (about 3 GHz). This is consistent with the aforementioned description of the preset frequency modulation rule 21a. The frequency relationship of each radiator shown in FIG6 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 aforementioned description of (1) in FIG5A, which will not be repeated here.

[0237] It should be understood that, as shown in FIG6 , the frequency of radiation D is adjusted closer to radiator A (the main radiator) than to radiator C because radiator D is farther away from radiator A than radiator C. If radiator D is to provide a more positive parasitic radiation effect 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.

[0238] As shown in FIG6 , the frequency of radiator B is adjusted closer to that of radiator A (the main radiator) than that of radiator E and radiator F. This is because, in the example of FIG6 , radiator B primarily contributes to parasitic radiation on radiator A because radiator B and radiator A are both located on the first side (e.g., the horizontal side) of the electronic device and are relatively close to each other.

[0239] It should also be understood that in a single-mode Wi-Fi scenario, antennas 1 and 2 can share radiators D, F, and C. Figure 6 illustrates an example where radiators D and F are assigned to antenna 1. In practice, radiators D and F can also be assigned to antenna 2, but this is not a limitation in this embodiment of the present application.

[0240] FIG. 7 shows a schematic diagram comparing frequency modulation rules involved in a WiFi single-state scenario and a low-performance scenario 11 .

[0241] Figure 7 shows a comparison of the S-parameters of antennas 1 and 2 in the Wi-Fi single-mode scenario and low-performance scenario 11, obtained during simulation testing of an electronic device. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0242] Figure 7 includes four 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 high and low relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 11. Curve Q64 shows the frequency high and low relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 11. The relevant description of curve Q61 and curve Q62 is the same as that of curve Q61 and curve Q62 and their related content in Figure 6 above, and will not be repeated here.

[0243] It should be understood that curves Q63 and Q64 shown in FIG7 are one example of low-performance scenario 11. In this case, in low-performance scenario 11, when antenna 1 operates in the medium-high frequency B3 band (MHBB3), antenna 2 performs best compared to antenna 1 operating in other frequency bands.

[0244] The letters A to F in Figure 7 represent radiators A to F, respectively. As shown in Figure 7 , the radiators involved in low-performance scenario 11, from low to high frequency, are, in order: radiator E (approximately 1.8 GHz), radiator A (approximately 2.4 GHz), radiator F (approximately 2.5 GHz), radiators B and H (approximately 2.6 GHz), radiator D (approximately 3.4 GHz), and radiator C (approximately 4.3 GHz). This can be understood as an example of the aforementioned frequency modulation rule 11a.

[0245] The frequency relationship of each radiator shown in curves Q63 and 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 made to be the current direction in the low-performance scenario 11 mentioned above. Regarding the current direction in the low-performance scenario 11, please refer to the aforementioned description of (2) in Figure 5A, which will not be repeated here.

[0246] Compared with the operating frequencies of each radiator determined by the preset frequency modulation rule 21a, it can be seen that the operating frequency of at least one radiator in the Wi-Fi single-state scenario has changed compared with the low-performance scenario 11. For example, the changes include but are not limited to the following.

[0247] Radiator frequency change 71: Radiator D's operating frequency changes from 3.4 GHz, higher than radiator A (the main radiator), to 2.2 GHz, lower than radiator A. This change is indicated by the white circle ① in Figure 7 . This radiator frequency change 71 changes the direction of the current flowing through radiator D from being in the same direction as radiator A to being in the opposite direction. For details on the change in current direction through radiator D, refer to the description of the white circle ① in Figure 5A and are not repeated here.

[0248] Radiator frequency change 72: Radiator F's operating frequency changes from 2.5 GHz to 3 GHz, which is further from radiator A's operating frequency. This change is indicated by the white circle ② in Figure 7 . This radiator frequency change 72 causes the current in radiator F to change from a high current to a low current. For details on the change in current strength in radiator F, refer to the description of the white circle ② in Figure 5A and are not repeated here.

[0249] Radiator frequency change 73: The operating frequency of radiator E changes from 1.8 GHz, which is lower than that of radiator A (the main radiator), to 2.8 GHz, which is higher than that of radiator A. This change is reflected in the white circle ③ in Figure 7.

[0250] Radiator frequency change 74: The operating frequency of radiator C changes from 4.3 GHz, which is higher than that of radiator A (the main radiator), to 2.2 GHz, which is lower than that of radiator A. This change is reflected in the white circle ④ in Figure 7.

[0251] The radiator frequency change 73 can change the current direction of radiator F from opposite to that of radiator A to the same direction as radiator A. The radiator frequency change 74 can change the current direction of radiator C from opposite to that of radiator A to the same direction as radiator A. For the description of the changes in the current direction of radiators F and C, please refer to the description of the white circle ③ in Figure 5A above and will not be repeated here.

[0252] It should be understood that the operating frequency values ​​of the radiators shown in Figures 6 and 7 are for illustration only and may be other values ​​in actual situations. For example, the operating frequency of the same radiator may be 1 GHz higher or lower than the operating frequency. This should not be construed as limiting the embodiments of the present application.

[0253] The following describes how, in a Wi-Fi single-state scenario, at least one frequency control circuit adjusts the frequency of each radiator, combining preset frequency modulation rule 21a, to ensure that the desired current direction generated by each radiator matches the target current direction 11. This adjustment process is also compared to a low-performance scenario.

[0254] FIG8 shows a schematic diagram of frequency control circuit settings involved in a WiFi single-state scenario and a low-performance scenario 11.

[0255] The following describes how to adjust the frequencies of the radiators shown in FIG. 7 based on FIG. 8 .

[0256] In the second antenna structure, radiators B and H are not connected to the frequency control circuit. Radiator H can be considered a parasitic radiator with radiator B as the primary radiator. The operating frequencies of radiators B and H can be equal and fixed within a frequency band of approximately 2.55 GHz to 2.65 GHz. For example, the operating frequency of radiators B and H can be 2.6 GHz, etc. This is not limited in this embodiment of the present application.

[0257] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit mentioned here also describes the frequency adjustment of radiators C, E, D and F.

[0258] As shown in (1) in Figure 8, this 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, 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, 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, radiator D is equivalent to connecting a lumped element after a capacitor (about 1p) in series with an inductor (about 0.6n), and the frequency is adjusted to about 2.2Ghz. For radiator F, the electronic device turns switch s7 (OFF) and s8 (ON) in frequency control circuit 400f, turning on frequency modulation branch 428. This effectively connects radiator F to a lumped element consisting of a capacitor (approximately 2.4p) in parallel with an inductor (approximately 1n), adjusting the frequency to approximately 3 GHz.

[0259] As shown in (2) in Figure 8, this is the frequency control circuit setting in 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 conductive. In this way, the radiator C is equivalent to a lumped element connected after a capacitor (about 1.5p) and an inductor (about 1n), and the frequency is adjusted to a higher frequency band of about 4.3Ghz. For radiator E, the electronic device opens (OFF) 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 conductive. 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 opens (OFF) the switch unit s6, so that the frequency modulation branch 425 is conductive. This effectively connects radiator D to an inductor of approximately 0.6n, adjusting the frequency to approximately 3.4GHz. For radiator F, the electronic device turns on switch s7 and turns off switch s8 in frequency control circuit 400f, turning on frequency modulation branch 427. This effectively connects radiator F to a capacitor of 0.7p, adjusting the frequency to approximately 2.5GHz.

[0260] The following describes the beneficial effects of the Wi-Fi single-state scenario compared with the low-performance scenario 11.

[0261] FIG9 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a Wi-Fi single-state scenario and a low-performance scenario 11 obtained when performing a simulation effect test on an electronic device.

[0262] As shown in Figure 9, 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 antenna's radiation efficiency and system efficiency, respectively. This indicates better antenna performance.

[0263] In Figure 9, the "Radiation Efficiency - Wi-Fi Only" and "Radiation Efficiency - Scenario 11" curves represent the radiation efficiency of Antenna 2 in the Wi-Fi Only scenario and Low-Performance Scenario 11, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi Only scenario, the radiation efficiency of Antenna 2 is approximately -1.8 dB, and in Low-Performance Scenario 11, the radiation efficiency is approximately -2.8 dB. Compared to Low-Performance Scenario 11, the radiation efficiency of Antenna 2 in the Wi-Fi Only scenario is approximately 1 dB higher.

[0264] In Figure 9, the "System Efficiency - Wi-Fi Only" and "System Efficiency - Scenario 11" curves represent the system efficiency of Antenna 2 in the Wi-Fi Only scenario and Low-Performance Scenario 11, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi Only scenario, the system efficiency of Antenna 2 is approximately -2.3 dB, while in Low-Performance Scenario 11, the system efficiency is approximately -3.3 dB. Compared to Low-Performance Scenario 11, the system efficiency of Antenna 2 in Wi-Fi Only also improves by 1 dB.

[0265] Low performance scenario 12:

[0266] When the operating frequencies of antennas 1-3 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. At this time, although the performance of antenna 1 is better, the performance of antenna 2 is low when operating 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 communication in which 2.4G wifi communication is enabled and the cellular network communication is in the B41 frequency band.

[0267] Among them, the reason why antenna 2 has low performance when operating in the WiFi 2.4G frequency band in low-performance scenario 12 can be referred to the following description of Figure 13 and will not be repeated here.

[0268] The following describes the improvement method and related content for the low performance scenario 12.

[0269] For low-performance scenario 12, the electronic device can change some of the radiators responsible for providing cellular network communication (in the B41 frequency band) to be 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).

[0270] Based on the first antenna structure in this application, the electronic device can readjust the operating frequency of antenna 2 and its coupled antenna 1 according to the preset frequency modulation rule 21b, 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 12). 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 by them is used to provide 2.4G WiFi communication. Alternatively, 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 by them does not adversely affect the 2.4G WiFi communication. In this way, while antenna 1 continues to provide cellular network communication (in the B41 frequency band), antenna 2 can better provide 2.4G WiFi communication. This can achieve the goal of improving the performance of antenna 2 while balancing the performance of antenna 1. The reason for generating the target current direction here can refer to the relevant description of generating the target current direction above and will not be repeated here.

[0271] When the electronic device is in the coexistence state of wifi and B41, the scenario in which the operating frequencies of antenna 2 and antenna 1 are readjusted according to the preset frequency modulation rule 21b can be called the coexistence scenario of wifi and B41.

[0272] FIG10 shows a comparison diagram of current directions in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12.

[0273] First, based on the aforementioned reasons for generating the target current direction, the target current direction 12 proposed for the coexistence scenario of WiFi and B41 is described in detail in conjunction with FIG10 .

[0274] FIG10 ( 1 ) shows a schematic diagram of a target current direction 12 .

[0275] Referring to (1) in FIG10 , it 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.

[0276] When the electronic device is in the coexistence state of WiFi and B41, antenna 2 is mainly responsible for providing 2.4G WiFi communication for the electronic device. Antenna 1 is mainly responsible for providing cellular network communication (in the B41 frequency band) for the electronic device.

[0277] The radiators mainly responsible for the B41 frequency band include radiator E and radiator F. In this case, radiator E is the main radiator, and radiator F is a first-class radiator, and the desired current direction generated by it is the same as that of radiator E.

[0278] It should be understood here that the parasitic radiators of radiator E may include radiators B, D, and other parasitic radiators in addition to radiator F. However, in the coexistence scenario of WiFi and B41, radiators other than radiator F have little impact on radiator E and a greater impact on radiator A. This is not described here and will be described below when discussing radiator A.

[0279] The radiators primarily responsible for the Wi-Fi 2.4 GHz band include radiators A, B, and D, and may also include radiator H. In this case, radiator A is the primary radiator. Radiators H and B are Class I radiators, generating the desired current in the same direction as radiator A. Radiator D is a Class II radiator, generating the desired current in the opposite direction of radiator A. Radiator C is a Class III radiator, generating a weaker desired current to avoid interfering with radiators A or E.

[0280] Here, the current of the radiator C is weaker, that is, the current of the radiator C is weaker than the current of the radiator A and the current of the radiator E.

[0281] In some possible cases, in the second antenna structure, when the electronic device is in a scenario where WiFi and B41 coexist, no current may be distributed on the radiator C.

[0282] It should be understood here that in the coexistence scenario of WiFi and B41, the parasitic radiators of radiator A may include parasitic radiators such as radiator F in addition to radiators B, radiator D and radiator H, but the impact on radiator A is small and will not be described here.

[0283] It should be understood that the current direction of radiator A (main radiator) and radiator E (main radiator) is the direction shown in (1) of Figure 10 as an example for explanation. In actual situations, the current direction of radiator A and radiator E can also be opposite to the direction shown in (1) of Figure 10. This application does not limit this.

[0284] FIG10 ( 2 ) shows the current direction in the low performance scenario 12 .

[0285] The following describes in detail the reasons why the performance of antenna 2 is improved when the electronic device is in the coexistence state of wifi and B41 after using the frequency modulation rules involved in this application, in combination with (2) in Figure 10 and (1) in the aforementioned Figure 10.

[0286] Referring to (2) in FIG10 , 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.

[0287] Reason 12-1 for poor performance: Radiator D is a parasitic radiator of radiator A (the main radiator) and a secondary radiator. However, the current of radiator D flows in the same direction as the current of radiator A. The resonance generated by this current flow in the same direction as radiator A adversely affects radiator A.

[0288] Combining (1) and (2) in Figure 10 , we can see that for 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 low performance reason 12-1 is reflected in the white circle ① in (2) in Figure 10 .

[0289] It should be understood that the reason for changing the current flow of radiator D from being in the same direction as the current of radiator A to being in the opposite direction is that, although radiator D is a parasitic radiator of radiator A, it is located on the opposite side of radiator A, is not parallel to radiator A, and is relatively close to radiator A. The resonance generated when the current flows in the opposite direction of radiator A has a positive parasitic radiation effect on radiator A, thereby improving the performance of antenna 2.

[0290] Reason 12-2 for low performance: In the coexistence scenario of Wi-Fi and B41, radiator C is highly coupled with radiator A (primary radiator) and radiator E (primary radiator). When the current of radiator C is strong, if it produces a favorable parasitic radiation effect on one primary radiator, it may have an adverse effect on the other primary radiator.

[0291] Combining (1) and (2) in Figure 10 , we can see that for low performance reason 12-2, there is a second change: the current of radiator C is changed from strong to weak to reduce the adverse effects on antenna 2 or antenna 1. The second change for low performance reason 12-2 is reflected in the white circle ② in (2) in Figure 10 .

[0292] FIG11 shows 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.

[0293] As shown in (1) in Figure 11, this is a simulation diagram of the current distribution of each radiator mainly responsible for the WiFi 2.4G frequency band in an electronic device in the coexistence state of WiFi and B41. Among them, the current direction of each radiator corresponds to the current direction of each radiator in the target current direction 12 shown in (1) in Figure 10. 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. Moreover, based on (1) in Figure 11, it can be seen that the current of radiator C is weaker than that of other radiators.

[0294] As shown in (2) in Figure 11, this is a simulation diagram of the current distribution of each radiator responsible for the WiFi 2.4G band in a low-performance electronic device 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 degrade.

[0295] It should be understood here that for this 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 besides the WiFi single state and the WiFi and B41 coexistence state. This embodiment of the present application will not be further described.

[0296] Next, the preset frequency modulation rule 21 b involved in adjusting the target current direction 12 will be described.

[0297] In some possible cases, the preset frequency modulation rule 21b is used to adjust the frequency relationship between radiator A (main radiator) and its main parasitic radiators (including radiators B, H, and D) when the electronic device is in the coexistence state of WiFi and B41. It is also used to adjust the frequency relationship between radiator E (main radiator) and its main parasitic radiators (including radiator F) so that the current distributed in each radiator meets the target current direction 12.

[0298] Among them, the operating frequency of radiator A (main radiator) (denoted 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 coexistence scenario of wifi and B41, the radiators involved in the frequencies of the radiators mainly responsible for providing 2.4Gwifi communication mode from low to high can be: radiator D, radiator A, radiator B and radiator H.

[0299] The operating frequency of radiator E (main radiator) (denoted as operating frequency E) belongs to the B41 frequency band. For example, the operating frequency E can be 2.55 GHz. 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. In addition, the operating frequency of radiator F involved in the coexistence scenario of wifi and B41 is lower than the operating frequency of radiator F involved in the aforementioned wifi single state. Therefore, in the coexistence scenario of wifi and B41, the radiators mainly responsible for providing cellular network (in the B41 frequency band) communication mode can be, from low to high, radiators E, radiator F.

[0300] In a scenario where Wi-Fi and B41 coexist, the operating frequency of radiator C (denoted as operating frequency C1) can be adjusted to a frequency significantly different from operating frequency A and operating frequency E based on preset frequency modulation rule 21b. In some possible scenarios, the operating frequency of radiator C can be adjusted to a very high frequency (greater than 4 GHz), such as 5 GHz. This can weaken the current of radiator C and reduce adverse effects on antenna 2 or antenna 1.

[0301] In combination with the above content, in some possible cases, the radiators involved in the coexistence scenario of WiFi and B41 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.

[0302] FIG12 shows a schematic diagram of a preset frequency modulation rule 21b.

[0303] Figure 12 shows the S-parameter performance curves of Antenna 1 and Antenna 2 in a Wi-Fi and B41 coexistence scenario, obtained during a simulation test of an electronic device. As shown in Figure 12 , the abscissa represents frequency in GHz, and the ordinate represents the S11 amplitude in dB.

[0304] Figure 12 includes two curves: the "Antenna 2 - Coexistence State" curve, referred to as curve Q21, and the "Antenna 1 - Coexistence State" curve, referred to as curve Q22. Curve Q21 shows the frequency relationship between the radiators on Antenna 2 and the corresponding frequencies for each radiator in the Wi-Fi and B41 coexistence scenario. Curve Q22 shows the frequency relationship between the radiators on Antenna 1 and the corresponding frequencies for the Wi-Fi and B41 coexistence scenario.

[0305] The letters AF in Figure 12 represent radiators A to F respectively. As can be seen from Figure 12, 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).

[0306] The frequencies of the radiators mainly responsible for the WiFi 2.4G frequency band can be, from low to high, radiator E (about 2.55Ghz) and radiator F (about 2.8Ghz).

[0307] The operating frequency (not shown) of the radiator C is adjusted to a very high position (greater than 4 GHz), such as 5 GHz, 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 .

[0308] The frequency relationship of each radiator shown in FIG12 conforms to the aforementioned description of the preset frequency modulation rule 21b. This allows the desired current direction of each radiator in antenna 1 and antenna 2 to be the target current direction 12. The description of the target current direction 12 can be referred to the aforementioned description of (1) in FIG10 and will not be repeated here.

[0309] It should also be understood that in a single-mode Wi-Fi scenario, antennas 1 and 2 can share a common radiator D. Figure 12 illustrates an example where radiation D is attributed to antenna 1. In practice, radiation D can also be attributed to antenna 2, but this is not a limitation in this embodiment of the present application.

[0310] FIG13 shows a schematic diagram comparing frequency modulation rules in a Wi-Fi and B41 coexistence scenario and a low-performance scenario 12. FIG.

[0311] Figure 13 shows a comparison of the S-parameters of Antenna 1 and Antenna 2, obtained during simulation testing of an electronic device in the Wi-Fi and D41 coexistence scenario and low-performance scenario 12. As shown in Figure 13 , the abscissa represents frequency in GHz, and the ordinate represents the S11 amplitude in dB.

[0312] Figure 13 includes four curves: the curve "Antenna 2 - Coexistence State" is abbreviated as curve Q21, the curve "Antenna 1 - Coexistence State" is abbreviated as curve Q22, the curve "Antenna 2 - Scenario 12" is abbreviated as curve Q23, and the curve "Antenna 1 - Scenario 12" is abbreviated as curve Q24. Among them, 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 that of curves Q21 and Q22 and their related content in Figure 12 above, and will not be repeated here.

[0313] It should be understood that curves Q23 and Q24 shown in Figure 13 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-high frequency B41 band (abbreviated as MHBB41).

[0314] The letters A to F in Figure 13 represent radiators A to F, respectively. As shown in Figure 13, in low-performance scenario 12, the radiators primarily responsible for the Wi-Fi 2.4 GHz band include radiator A (the main radiator) and its primary parasitic radiators, which include radiators B and H. The radiators primarily responsible for the B41 band include radiator E (the main radiator) and its primary parasitic radiators, which include radiators F and C.

[0315] In the 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.

[0316] The frequency relationship of each radiator shown in curves Q23 and 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. Regarding the current direction in the low-performance scenario 12, please refer to the description of (2) in Figure 10 above, which will not be repeated here.

[0317] Compared with the operating frequencies of each radiator determined by the preset frequency modulation rule 21b, it can be seen that the operating frequency of at least one radiator in the Wi-Fi and B41 coexistence scenario has changed compared with the low-performance scenario 12. For example, the following changes may be included but are not limited to.

[0318] Radiator frequency change 31: Radiator D's operating frequency changes from 4.6 GHz, which is higher than radiator A (the main radiator), to 2.0 GHz, which is lower than radiator A. This change is indicated by the white circle ① in Figure 13. This radiator frequency change 31 changes the direction of the current flowing through radiator D from being in the same direction as radiator A to being in the opposite direction. For details on the change in the current direction through radiator D, refer to the description of the white circle ① in Figure 10 and are not repeated here.

[0319] Radiator frequency change 32: Radiator C's operating frequency changes from 3.5 GHz to 5.0 GHz, which is further away from radiator A's operating frequency. This change is indicated by the white circle ② in Figure 13 . This radiator frequency change 32 causes the current in radiator C to change from a high current to a low current. For details on the change in current strength in radiator C, refer to the description of the white circle ② in Figure 10 , and will not be repeated here.

[0320] It should be understood that the operating frequency values ​​of the radiators shown in Figures 12 and 13 are for illustration purposes only and may be other values ​​in actual situations. For example, the operating frequency of the same radiator may be 1 GHz higher or lower than the operating frequency. This should not be construed as limiting the embodiments of the present application.

[0321] The following describes how, in a Wi-Fi and B41 coexistence scenario, at least one frequency control circuit adjusts the frequency of each radiator to ensure that the desired current direction generated by each radiator matches the target current direction 12, in accordance with preset frequency modulation rule 21b. The following also compares this adjustment process with that in a low-performance scenario.

[0322] FIG14 shows a schematic diagram of frequency control circuit settings involved in a WiFi single-state scenario and a low-performance scenario 12 .

[0323] How to adjust the frequency of each radiator shown in FIG. 13 will be described below based on FIG. 14 .

[0324] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit mentioned here also describes the frequency adjustment of radiators C, E, D and F.

[0325] As shown in (1) in Figure 14, this 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, 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, 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, radiator D is equivalent to connecting a lumped element consisting of an inductor (approximately 0.6n) in series with a capacitor (approximately 1.5p), and the frequency is adjusted to approximately 2.0 GHz. The approximately 1.5p capacitor is the sum of the approximately 1p capacitor and the approximately 0.4p capacitor in frequency modulation branch 426, plus the 0.1p capacitor (the open switch S5 can be considered as a 0.1p capacitor). For radiator F, the electronic device closes (ON) both switch units s7 and s8 in frequency control circuit 400f, turning on both frequency modulation branches 427 and 428. In this way, radiator F is equivalent to connecting a lumped element consisting of a capacitor (approximately 2.4p) in parallel with an inductor (approximately 1n) and another capacitor (approximately 0.7p), and the frequency is adjusted to approximately 2.8 GHz.

[0326] As shown in (2) in Figure 14, this is the frequency control circuit setting in low-performance scenario 12. For radiator C, the electronic device closes (ON) both the switch unit s2 and the switch unit s1 in the frequency control circuit 400c, so that the frequency modulation branch 421 and the frequency modulation branch 422 are both turned on. In this way, the radiator C is equivalent to connecting a lumped element with a capacitor (about 1.5p) in parallel with an inductor (about 1n), 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 connecting 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, radiator D is equivalent to an inductor of approximately 0.6n, and the frequency is adjusted to approximately 4.6 GHz. For radiator F, the electronic device turns off both switch units s7 and s8 in frequency control circuit 400f, turning on frequency modulation branch 429. This effectively connects radiator F to a lumped element consisting of a capacitor (approximately 2.7p) in parallel with an inductor (approximately 1n), and then another inductor (approximately 5n) in series, adjusting the frequency to approximately 3 GHz.

[0327] The following describes the beneficial effects of the Wi-Fi and B41 coexistence scenario compared to the low-performance scenario 12.

[0328] FIG15 is a comparison diagram of the efficiency of antenna 2 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12 obtained during the simulation effect test of the electronic device.

[0329] As shown in FIG15 , the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB.

[0330] In Figure 15, the "Radiation Efficiency - Coexistence" and "Radiation Efficiency - Scenario 12" curves represent the radiation efficiency of Antenna 2 in the Wi-Fi and B41 coexistence scenarios and in Low-Performance Scenario 12, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi and B41 coexistence scenario, the radiation efficiency of Antenna 2 is approximately -2.7 dB, while in Low-Performance Scenario 12, the radiation efficiency is approximately -3.5 dB. Compared to Low-Performance Scenario 12, Antenna 2's radiation efficiency in the coexistence state improves by approximately 0.8 dB.

[0331] In Figure 15, the "System Efficiency - Coexistence" and "System Efficiency - Scenario 12" curves represent the system efficiency of Antenna 2 in the Wi-Fi and B41 coexistence scenarios and in Low-Performance Scenario 12, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi and B41 coexistence scenario, the system efficiency of Antenna 2 is approximately -2.8 dB, while in Low-Performance Scenario 12, the system efficiency is approximately -3.6 dB. Compared to Low-Performance Scenario 12, Antenna 2's system efficiency in the coexistence state also improves by approximately 0.8 dB.

[0332] FIG16 is a comparison diagram of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained during the simulation effect test of the electronic device.

[0333] As shown in (1) of Figure 16, 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" represent the radiation efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 12, respectively. The curve "System Efficiency - Coexistence State" and the curve "System Efficiency - Scenario 12" represent the system efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario, respectively. At this time, the operating frequency of antenna 1 is 2.55 GHz. In the coexistence state scenario, the radiation efficiency and system efficiency of antenna 1 are both approximately -2.9 dB, and in the low-performance scenario 12, the radiation efficiency and system efficiency of antenna 1 are both approximately -2.2 dB. 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 0.7 dB.

[0334] As shown in (2) of Figure 16, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (transmission efficiency) in dB. The smaller the transmission efficiency (the further away from 0dB), the better the transmission efficiency of the antenna and the better the performance of the antenna. When the transmission efficiency value is less than -6dB, it means that the antenna has good transmission efficiency, and when it is greater than -6dB, it means that the antenna has poor transmission efficiency. As shown in (2) of Figure 16, the curve "Transmission Efficiency-Coexistence State" and the curve "Transmission Efficiency-Scenario 12" respectively represent the transmission efficiency of antenna 1 when it is working in the coexistence 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 antenna 1 in the coexistence state is slightly worse than that in the low-performance scenario 12.

[0335] Combining Figures 15 and 16, we can see that although Antenna 1's performance has declined, its radiation efficiency and system efficiency are still at -2.9dB, and its transmission efficiency is below -6dB. This indicates that Antenna 1's performance, while somewhat degraded, remains good. Furthermore, Antenna 2's performance has improved. This means that while Antenna 2's performance has been improved, Antenna 1's performance has also been balanced.

[0336] The second antenna structure is described in detail below.

[0337] FIG17 shows an example diagram of a second antenna structure.

[0338] As shown in (1) of FIG17 , in the second antenna structure, the radiators are arranged in a linear arrangement, and each radiator is placed on the frame 1 of the electronic device, which can be a horizontal frame or a vertical frame. Radiators E, C, A, and G are all disposed on the frame 1 of the first device body 100. Radiators F, D, B, and H are all disposed on the frame 1 of the second device body 200.

[0339] In the second antenna structure, Radiators A through D meet the aforementioned fixed configuration requirements. For a description of the fixed configuration, refer to the previous section and are not repeated here. Radiators E, F, G, and H, except for their arrangement, are identical or similar to those corresponding to the first antenna structure. For details, refer to the description of Radiators E through H in the first antenna structure and are not repeated here.

[0340] Antenna 2 is coupled to Antenna 1 and Antenna 3, respectively. The coupling between Antenna 2 and Antenna 1 includes: Radiator C is coupled to radiator E via slot 105e, with open end 103c of radiator C positioned opposite open end 103e of radiator E. Radiator D is coupled to radiator F via slot 105f, with open end 203d of radiator D positioned opposite open end 203f of radiator F. The lengths of slot 105e and slot 105c mentioned above are independent of each other. Slots 105e and 105c can be of equal length, or one can be longer than the other. Slot 105d and slot 105f mentioned above are independent of each other. Slot 105d and slot 105f can be of equal length, or one can be longer than the other.

[0341] The coupling between Antenna 2 and Antenna 3 includes: Radiator A is coupled to radiator G via slot 105g, with open end 103g of radiator G positioned opposite open end 103a of radiator A. Radiator B is coupled to radiator H via slot 105h, with open end 203b of radiator B positioned opposite open end 203h of radiator H. The lengths of slot 105h and slot 105b mentioned above are independent of each other. Slots 105h and 105b can be of equal length, or one can be longer than the other. Slot 105g is independent of the length of slot 105a mentioned above. Slot 105g and slot 105a can be of equal length, or one can be longer than the other.

[0342] When antenna 2 is coupled with antenna 1 and antenna 3, antenna 2 can share radiators C, D, and F with antenna 1. Antenna 2 can share radiators B and H with antenna 1. That is, antenna 2 can be said to include radiators A through D, as well as radiators H and F. Antenna 1 includes radiators E, F, C, and D. Antenna 3 includes radiators G, H, and B.

[0343] As shown in (2) of FIG. 17 , 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.

[0344] The connection point 106c of the radiator C is connected to the first floor panel in the first device body 100 via the frequency control circuit 500c. The frequency control circuit 500c includes a switch device 510c and multiple 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 can select at least one frequency modulation branch C2 by switching the switch unit between closed (ON) and open (OFF). For example, the multiple 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, which is used to control whether the frequency modulation branch 521 is conductive. The frequency modulation branch 522 is connected to the switch unit w2, which is used to control whether the frequency modulation branch 522 is conductive. When the switch device 510c controls the switch unit w1 to be closed (ON) and controls the switch unit w2 to be open (OFF), it indicates that the switch device 510c is connected to the FM branch 521 and is not connected to the FM branch 522. Other switching conditions of the switch device 510c can be referred to the above description and will not be repeated here.

[0345] In some possible cases, the connection point 106 c is disposed near the open end 103 e of the radiator E.

[0346] The feed point 104e of the radiator E is connected to the first floor panel in the first device body 100 via the frequency control circuit 500e. The frequency control circuit 500e includes a switch device 510e and multiple 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 can select at least one frequency modulation branch E2 by switching the switch unit between closed (ON) and open (OFF). For example, the multiple frequency modulation branches E2 may include a frequency modulation branch 523 and a frequency modulation branch 524. The frequency modulation branch 523 is connected to the switch unit w3, which is used to control whether the frequency modulation branch 523 is conductive. The frequency modulation branch 524 is connected to the switch unit w4, which is used to control whether the frequency modulation branch 524 is conductive. The gating condition of the switch device 510e can refer to the above description and will not be repeated here.

[0347] In some possible cases, the feeding point 104e is disposed near the open end 103e of the radiator E.

[0348] The connection point 106d of the radiator D is connected to the second floor panel in the second device body 200 via the frequency control circuit 500d. The frequency control circuit 500d includes a switch device 510d and multiple 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 switch unit between closed (ON) and open (OFF). For example, the multiple 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, which is used to control whether the frequency modulation branch 525 is conductive. The frequency modulation branch 526 is connected to the switch unit w6, which is used to control whether the frequency modulation branch 526 is conductive. The gating condition of the switch device 510d can refer to the above description and will not be repeated here.

[0349] In some possible cases, the connection point 106d is located near the open end 203d of the radiator E.

[0350] The connection point 106f of the radiator F is connected to the second floor panel in the second device body 200 via the frequency control circuit 500f. The frequency control circuit 500f includes a switch device 510f and multiple 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 can select at least one frequency modulation branch C2 by switching the switch unit between closed (ON) and open (OFF). For example, the multiple frequency modulation branches C2 may include a frequency modulation branch 527 and a frequency modulation branch 528. The frequency modulation branch 527 is connected to the switch unit w7, which is used to control whether the frequency modulation branch 527 is conductive. The frequency modulation branch 528 is connected to the switch unit w8, which is used to control whether the frequency modulation branch 528 is conductive. The gating condition of the switch device 510f can be referred to the above description and will not be repeated here.

[0351] In some possible cases, the connection point 106f is located near the open end 203f of the radiator E.

[0352] 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. Lumped elements may differ in different matching branches, including differences in type, parameter values, or quantity of the lumped elements.

[0353] FIG. 18 shows an exemplary configuration of the first antenna structure in an electronic device.

[0354] As shown in FIG18 , radiators G, A, C, and E are placed on a horizontal frame of the first device body 100 of the electronic device.

[0355] Radiators H, B, D, and F are placed on a horizontal frame of the second device body 200 of the electronic device.

[0356] 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.

[0357] In the case of the second antenna structure, the operating frequency band (frequency range) of antennas 1 to 3 and the communication method provided by each antenna for the electronic device can be the same as those of the first antenna structure. For details, please refer to the description of the relevant content above and will not be repeated here.

[0358] However, when the operating frequency of antenna 1-antenna 3 is adjusted according to the preset frequency modulation rule 12, the following low-performance scenario will 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 in this 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 following frequency modulation rules 12a and frequency modulation rules 12b. For the relevant description of the 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 description of the relevant content in Figure 21. The preset frequency modulation rule 12b may refer to the following description of the relevant content in Figure 27.

[0359] Low performance scenario 21:

[0360] When the operating frequencies of antennas 1 and 3 are adjusted according to preset frequency modulation rule 12a, and the electronic device is in Wi-Fi single mode, antenna 2 has low performance when operating in the Wi-Fi 2.4 GHz band. This results in poor communication capabilities when the electronic device communicates with other electronic devices in Wi-Fi single mode. For a description of Wi-Fi single mode, please refer to the previous section and will not be repeated here.

[0361] Among them, the reason why antenna 2 has low performance when operating in the wifi 2.4G frequency band in low-performance scenario 21 can be referred to the following description of Figure 21 and will not be repeated here.

[0362] The following describes the improvement method and related content for the low performance scenario 21.

[0363] For low-performance scenario 21, based on the second antenna structure in this application, when the electronic device is in the wifi single state, the operating 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). 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 2.4G wifi communication mode, so that the performance of the antenna 2 is improved and 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 the 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 operating 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.

[0364] FIG19A shows a comparison diagram of current directions in a wifi single-state scenario and a low-performance scenario 21. FIG.

[0365] FIG19B shows an exemplary current distribution simulation diagram when the electronic device is in the wifi single mode.

[0366] First, based on the aforementioned reasons for generating the target current direction, the target current direction 21 proposed for the Wi-Fi single-state scenario is described in detail with reference to FIG. 19A and FIG. 19B .

[0367] FIG19A ( 1 ) shows a schematic diagram of a target current direction 21 .

[0368] Referring to (1) in FIG19A , it shows the desired current direction (target current direction 21) of each radiator in antenna 1 and antenna 2 when the operating frequency of antenna 2 and antenna 1 coupled thereto is readjusted according to the preset frequency modulation rule 22a. When the electronic device is in the 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 desired current direction generated by them is the same direction as radiator A.

[0369] It should be understood that the current direction of radiator A (main radiator) is the direction shown in (1) in Figure 5A as an example for explanation. In actual situations, the current direction of radiator A can also be opposite to the direction shown in (1) in Figure 5A. This application does not limit this.

[0370] (2) in FIG. 19A shows the current direction in the low-performance scenario 21 .

[0371] The following describes in detail the reasons why the performance of antenna 2 is improved when the electronic device is in the wifi single state after using the frequency modulation rules involved in this application, in combination with (2) in Figure 19A and (1) in the aforementioned Figure 19A.

[0372] Referring to (2) in FIG. 19A , in the low-performance scenario 21 , the reasons leading to the low performance of the antenna 2 include but are not limited to the following reasons.

[0373] Reason for low performance 21-1: 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 adversely affect radiator A, resulting in reduced performance of antenna 2.

[0374] Combining (1) and (2) in FIG19A , it can be seen that, for 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 that of radiator A (the main radiator) to being in the same direction, which can improve the performance of antenna 2. The first change for low performance reason 21-1 is reflected in the white circle ① in FIG19A .

[0375] As shown in Figure 19B, it is an exemplary current distribution simulation diagram when the electronic device is in the wifi single mode, which corresponds to the target current direction 21 shown in (1) in Figure 19A. The current direction of radiators B-E is the same as that of radiator A.

[0376] Next, the preset frequency modulation rule 22 a involved in adjusting the target current direction 21 is described.

[0377] In some possible cases, the preset frequency modulation rule 22a is used to adjust the frequency relationship between the radiator A (main radiator) and the parasitic radiators of the radiator A.

[0378] The preset frequency modulation rule 22a may include: for the second antenna structure, when the electronic device is in the WiFi single mode, adjusting the operating frequency (denoted as operating frequency A) of radiator A (main radiator) to belong to the WiFi 2.4G frequency band (denoted as frequency band A), for example, the operating frequency A may be 2.4 GHz. Adjusting the operating frequency of radiator C to be less than and close to operating frequency A. Setting the electrical length of radiator B to be greater than a preset length value of 1, and the electrical length of radiator H to be greater than a preset length value of 1, so that radiators B and radiator H can be regarded as a parasitic radiator with radiator B as the main radiator, and the frequency of radiator H can be regarded as the same as the frequency of radiator B. And adjusting the operating frequency of radiator B to be greater than and close to operating frequency A. Adjusting the operating frequency of radiator D to be greater than and close to operating frequency A. Adjusting the operating frequency of radiator E to be greater than and close to operating frequency A. Adjusting the operating frequency of radiator F to be greater than and close to operating frequency A.

[0379] In some possible cases, the operating frequency of a parasitic radiator that is closer to radiator A (the 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 Wi-Fi single-state scenario from low to high frequency can be: radiator C, radiator A, radiator D, radiator B, radiator H, radiator E, and radiator F, respectively.

[0380] 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 considered 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 aforementioned 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 aforementioned reasons for generating the target current direction, thereby improving the performance of antenna 2.

[0381] It should be understood that the foregoing description uses radiators C, D, B, H, E, and F as parasitic radiators of radiator A (the main radiator). By adjusting the operating frequency of each parasitic radiator, appropriate parasitic resonances are generated after the main radiator resonates to improve the performance of antenna 2. In actual practice, more or fewer parasitic radiators than described above may be used to generate parasitic resonances to improve the performance of antenna 2. For example, in other possible scenarios, only radiators C, D, and B may be used as parasitic radiators of radiator A (the main radiator), generating appropriate parasitic resonances after the main radiator resonates to improve the performance of antenna 2. In this case, the preset frequency modulation rule 21a may include: the operating frequency of radiator A (the main radiator) (denoted as operating frequency A) belongs to the WiFi 2.4G frequency band (denoted as frequency band A), for example, operating frequency A may be 2.4 GHz. The operating frequency of radiator C is less than and close to operating frequency A. Based on the above content, at this time, the radiators involved in the working frequencies of radiator C, radiator D, radiator B and radiator A (main radiator) from low to high can be: radiator C, radiator A (main radiator), radiator D, radiator B.

[0382] FIG20 shows a schematic diagram of a preset frequency modulation rule 22a.

[0383] Figure 20 is a graph showing the S-parameters of antennas 1 and 2 in a Wi-Fi single-mode scenario, obtained during a simulation test of an electronic device. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0384] Figure 20 includes two curves: Curve Q11 for "Antenna 2 - Wi-Fi Single Mode" and Curve Q12 for "Antenna 1 - Wi-Fi Single Mode." Curve Q11 shows the frequency relationships of the radiators in Antenna 2 and their corresponding frequencies in the Wi-Fi Single Mode scenario. Curve Q12 shows the frequency relationships of the radiators in Antenna 1 and their corresponding frequencies in the Wi-Fi Single Mode scenario.

[0385] The letters AF in FIG20 represent radiators A to radiators F, respectively. As can be seen from FIG20, the radiators involved in the wifi single-state scenario from low to high frequency can be: radiator C (about 2.1 GHz), radiator A (about 2.4 GHz), radiator D (about 2.6 GHz), radiator B and radiator H (about 2.8 GHz), radiator E (about 2.9 GHz), radiator F (about 3.4 GHz). This is consistent with the aforementioned description of the preset frequency modulation rule 22a. The frequency relationship of each radiator shown in FIG20 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 description of (1) in FIG19A, which will not be repeated here.

[0386] It should be understood that, as shown in FIG20 , the frequency of radiators D and B is adjusted closer to radiator A (the main radiator) than radiators E and F. This is to better achieve positive parasitic radiation on radiator A through the radiators that meet the fixed setting. Radiators B and D are closer to radiator A than radiators E and F, making them more likely to have a positive parasitic radiation effect on radiator A.

[0387] It should also be understood that in a single-mode Wi-Fi scenario, antennas 1 and 2 can share radiators D, F, and C. Figure 20 illustrates an example where radiators D and F are assigned to antenna 1. In practice, radiators D and F can also be assigned to antenna 2, but this is not a limitation in this embodiment of the present application.

[0388] FIG21 shows a schematic diagram comparing frequency modulation rules in a WiFi single-state scenario and a low-performance scenario 21 .

[0389] Figure 21 shows a comparison of the S-parameters of antennas 1 and 2 in the Wi-Fi single-mode scenario and low-performance scenario 11, obtained during simulation testing of an electronic device. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0390] Figure 21 includes four 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 high and low relationship of each radiator in antenna 2 and the corresponding frequency of each radiator in low-performance scenario 21. Curve Q14 shows the frequency high and low relationship of each radiator in antenna 1 and the corresponding frequency of each radiator in low-performance scenario 21. The description of curve Q11 and curve Q12 is the same as that of curve Q11 and curve Q12 and their related content in Figure 6 above, and will not be repeated here.

[0391] It should be understood that curves Q13 and Q14 shown in FIG21 are one example of low-performance scenario 21. In this case, in low-performance scenario 21, when antenna 1 operates in the medium-high frequency B3 band (MHBB3), antenna 2 performs best compared to antenna 1 operating in other frequency bands.

[0392] The letters AF in FIG21 represent radiators A to radiators F, respectively. As can be seen from FIG21, the radiators involved in the low-performance scenario 21 from low to high frequency can be: radiator E (about 1.7 GHz), radiator D and radiator F (about 2.1 GHz), radiator C (about 2.2 GHz), radiator A (about 2.4 GHz), radiator B and radiator H (about 2.8 GHz). This is consistent with the aforementioned description of the preset frequency modulation rule 12a and can be understood as an example of the aforementioned frequency modulation rule 12a. The frequency high and low relationship of the radiators shown in curves Q13 and Q14 of FIG20 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 aforementioned description of (2) in FIG19A, which will not be repeated here.

[0393] Compared with the operating frequencies of each radiator determined by the preset frequency modulation rule 21a, it can be seen that the operating frequency of at least one radiator in the Wi-Fi single-state scenario has changed compared with the low-performance scenario 21. For example, the changes include but are not limited to the following.

[0394] Radiator frequency change 21: The operating frequencies of radiators E, D, and F change from being higher than that of radiator A (main radiator) to being lower than that of radiator A. This change is reflected in the white circle ① in Figure 21.

[0395] The radiator frequency change 21 can change the direction of the current of radiators E, D, and F from being opposite to that of radiator A to being in the same direction as radiator A. For the description of the change in the direction of the current of radiators E, D, and F, please refer to the description of the white circle ① in Figure 19A above, and will not be repeated here.

[0396] It should be understood that the operating frequency values ​​of the radiators shown in Figures 20 and 21 are for illustration purposes only and may be other values ​​in actual situations. For example, the operating frequency of the same radiator may be 1 GHz higher or lower than the operating frequency. This should not be construed as limiting the embodiments of the present application.

[0397] The following describes how, in a Wi-Fi single-state scenario, at least one frequency control circuit adjusts the frequency of each radiator, combining preset frequency modulation rules 22a, to ensure that the desired current direction generated by each radiator matches the target current direction 21. This adjustment process is also compared to a low-performance scenario.

[0398] FIG22 shows a schematic diagram of frequency control circuit settings involved in a wifi single-state scenario and a low-performance scenario 21.

[0399] The following describes how to adjust the frequencies of the radiators shown in FIG. 21 based on FIG. 22 .

[0400] In the first antenna structure, radiators B and H are not connected to the frequency control circuit. Radiator H can be considered a parasitic radiator with radiator B as the primary radiator. The operating frequencies of radiators B and H can be equal and fixed within a frequency band. This frequency band is approximately 2.6 GHz to 2.8 GHz. For example, the operating frequency can be 2.8 GHz, etc. This is not limited in this embodiment of the present application.

[0401] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit mentioned here also describes the frequency adjustment of radiators C, E, D and F.

[0402] As shown in (1) in Figure 22, this 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, 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, 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, radiator D is equivalent to connecting an inductor of about 20n, and the frequency is adjusted to about 2.6Ghz. For radiator F, the electronic device turns on switch w8 and turns off switch w7 in frequency control circuit 500f, turning on frequency modulation branch 528. This effectively connects an inductor of approximately 0.6n to radiator F, adjusting the frequency to approximately 3.4 GHz.

[0403] As shown in (2) in FIG22 , the frequency control circuit setting in low-performance scenario 12 is shown. For radiator C, the control method of the frequency control circuit 500c connected thereto is the same as that of (1) in FIG22 . At this time, the frequency of radiator C is adjusted to approximately 2.2 GHz. 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 conductive. In this way, radiator E is equivalent to being connected to a 0 ohm resistor and then grounded, and the frequency is adjusted to approximately 1.7 GHz. For radiator D, the electronic device turns on (ON) the switch unit w6 in the frequency control circuit 500d and turns off (OFF) w5, so that the frequency modulation branch 526 is conductive. In this way, radiator D is equivalent to being connected to an inductor of approximately 0.6n, and the frequency is adjusted to approximately 2.1 GHz. For radiator F, the electronic device turns on switch w7 and turns off switch w8 in frequency control circuit 500f, turning on frequency modulation branch 527. This effectively connects an inductor of approximately 5n to radiator F, adjusting the frequency to approximately 2.1 GHz.

[0404] The following describes the beneficial effects of the Wi-Fi single-state scenario compared with the low-performance scenario 21.

[0405] FIG23 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in the Wi-Fi single-state scenario and the low-performance scenario 21 obtained when the electronic device is subjected to simulation effect testing.

[0406] As shown in FIG23 , the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB.

[0407] In Figure 23, the "Radiation Efficiency - Wi-Fi Only" and "Radiation Efficiency - Scenario 21" curves represent the radiation efficiency of Antenna 2 in the Wi-Fi Only and Low-Performance scenarios, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi Only scenario, the radiation efficiency of Antenna 2 is approximately -4.6 dB, while in Low-Performance Scenario 21, the radiation efficiency is approximately -5.6 dB. Compared to Low-Performance Scenario 21, the radiation efficiency of Antenna 2 in Wi-Fi Only improves by approximately 1 dB.

[0408] In Figure 23, the "System Efficiency - Wi-Fi Only" and "System Efficiency - Scenario 21" curves represent the system efficiency of Antenna 2 in the Wi-Fi Only and Low-Performance scenarios, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the Wi-Fi Only scenario, the system efficiency of Antenna 2 is approximately -4.4 dB, while in Low-Performance Scenario 21, the system efficiency is approximately -5.4 dB. Compared to Low-Performance Scenario 21, the system efficiency of Antenna 2 in Wi-Fi Only mode also improves by 1 dB.

[0409] Low performance scenario 22:

[0410] When the operating frequencies of antennas 1-3 are adjusted according to preset frequency modulation rule 12b, and the electronic device is in a state of Wi-Fi and B41 coexistence, antenna 1 is responsible for providing cellular network communication (in the B41 frequency band), and antenna 2 is responsible for providing 2.4G Wi-Fi communication. Although antenna 1 performs well at this time, antenna 2 performs poorly when operating in the Wi-Fi 2.4G frequency band. This results in poor communication capabilities when the electronic device communicates with other electronic devices using the 2.4G Wi-Fi communication method in the Wi-Fi and B41 coexistence state. For an explanation of the Wi-Fi and B41 coexistence state, please refer to the previous content and will not be repeated here.

[0411] Among them, the reason why antenna 2 has low performance when operating in the wifi 2.4G frequency band in low-performance scenario 22 can be referred to the following description of Figure 27 and will not be repeated here.

[0412] The following describes the improvement method for the low performance scenario 22 and its related content.

[0413] For low-performance scenario 22, based on the second antenna structure in this 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). 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 2.4G wifi 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 2.4G wifi 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.

[0414] 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.

[0415] FIG24 ( 1 ) shows a schematic diagram of a target current direction 22 .

[0416] Referring to (1) in FIG. 24 , it 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.

[0417] Antenna 1 is primarily responsible for providing cellular network communication (in the B41 frequency band) for the electronic device. Radiator E is the primary radiator. The parasitic radiators of radiator E primarily include radiator C. Radiator C is a first-class radiator, generating the same desired current direction as radiator E.

[0418] Antenna 2 is primarily responsible for providing 2.4G Wi-Fi communication for electronic devices. Radiator A is the primary radiator. Radiator A's parasitic radiators include radiators B, H, D, and F. Radiators B, H, D, and F are Class I radiators, generating the same desired current direction as radiator A.

[0419] In some possible cases, the desired current directions of the radiator E (main radiator) and the radiator A (main radiator) are opposite.

[0420] It should be understood that radiator E's parasitic radiators, in addition to radiator C, may also include radiators B, D, and other parasitic radiators. However, in the Wi-Fi and B41 coexistence scenario, radiators other than radiator C have a smaller impact on radiator E and a larger impact on radiator A. These radiators are not described here and will be discussed later when discussing radiator A. Similarly, in the Wi-Fi and B41 coexistence scenario, radiator A's parasitic radiators, in addition to radiators B, H, D, and F, may also include radiators such as E. However, these radiators have a smaller impact on radiator A and are not described here.

[0421] It should be understood here that in the scenario where WiFi and B41 coexist, the frequency of radiator D is higher than the frequency of radiator E. When the frequency of radiator E belongs to the B41 frequency band, radiator D can also act as a parasitic radiator of radiator E. Radiator D can generate a current in the same direction as radiator E (not shown in Figure 24) to produce a positive parasitic radiator effect on radiator E.

[0422] It should also be understood that the current direction of radiator A (main radiator) and radiator E (main radiator) is described here as an example in the direction shown in (1) of Figure 24. In actual situations, the current direction of radiator A and radiator E can also be opposite to the direction shown in (1) of Figure 24. This application does not limit this.

[0423] (2) in FIG. 24 shows the current direction in the low-performance scenario 22 .

[0424] The following describes in detail the reasons why the performance of antenna 2 is improved when the electronic device is in the coexistence state of wifi and B41 after using the frequency modulation rules involved in this application, in combination with (2) in Figure 24 and (1) in the aforementioned Figure 24.

[0425] Referring to (2) in FIG. 24 , in the low-performance scenario 22 , the reasons leading to the low performance of the antenna 2 include but are not limited to the following reasons.

[0426] Poor Performance Reason 22-1: Radiators D and H are parasitic radiators of radiator A (the main radiator) and are Class I radiators. However, the currents of radiators D and H are directed in the same direction as the current of radiator A. The resulting resonance when these currents are directed in the same direction as the current of radiator A adversely affects radiator A, resulting in poor performance of Antenna 2.

[0427] Combining (1) and (2) in Figure 24 , we can see that for low performance reason 22-1, there is a first change: changing the currents of radiators D and H from being opposite to the current of radiator A to being in the same direction as the current of radiator A can improve the performance of antenna 2. The first change for low performance reason 22-1 is reflected in the white circle ① in Figure 24 .

[0428] FIG25 shows 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.

[0429] As shown in (1) of Figure 25, it is a simulation diagram of the current distribution of each radiator mainly responsible for the WiFi 2.4G frequency band in the electronic device in the coexistence state of WiFi and B41. Among them, the current direction of each radiator corresponds to the current direction of each radiator in the target current direction 22 shown in (1) of Figure 24. At this time, radiator A is the main radiator, and the parasitic radiators can include radiator 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.

[0430] As shown in (2) in Figure 25, this is a simulation diagram of the current distribution of each radiator responsible for the WiFi 2.4G band in the electronic device in low-performance scenario 22. At this time, the current direction of radiators D and F is the same as that of radiator A, which will cause the performance of antenna 2 (including radiator A) to degrade.

[0431] Next, the preset frequency modulation rule 22 b involved in adjusting the target current direction 22 will be described.

[0432] In some possible cases, the preset frequency modulation rule 22b is used to adjust the frequency relationship between radiator A (main radiator) and the main parasitic radiators of radiator A (including radiators B, radiator H, radiator D, and radiator F). It is also used to adjust the frequency relationship between radiator E (main radiator) and the main parasitic radiators of radiator E (including radiator C).

[0433] The preset frequency modulation rule 22b may include: for the second antenna structure, when the electronic device is in a Wi-Fi and B41 coexistence state, adjusting the operating frequency of radiator A (main radiator) (denoted as operating frequency A) to belong to the Wi-Fi 2.4G frequency band (denoted as frequency band A), for example, the operating frequency A may be 2.4 GHz. The operating frequency of radiator D is greater than and close to the operating frequency A. Setting the electrical length of radiator B to be greater than a preset length value of 1, and the electrical length of radiator H to be greater than the preset length value of 1, so that radiators B and radiator H can be regarded as a parasitic radiator with radiator B as the main radiator, and the frequency of radiator H can be regarded as the same as the frequency of radiator B. Adjusting the operating frequency of radiator B to be greater than and close to the operating frequency A.

[0434] In some possible cases, the operating frequency of the parasitic radiator (primary) 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 providing 2.4G WiFi communication in the WiFi and B41 coexistence scenario from low to high frequencies can be: radiator A, radiator D, radiator B, radiator H, and radiator F.

[0435] The operating frequency of radiator E (main radiator) is adjusted to fall within the B41 frequency band (e.g., 2.55 GHz). The operating frequency of radiator C is greater than and 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 a scenario where Wi-Fi and B41 coexist, the radiators responsible for providing cellular network (B41 frequency band) communication, from lowest to highest frequency, are: radiator E, then radiator C.

[0436] In some possible cases, radiator C has a high coupling with radiator A (the main radiator) but the desired current direction it generates is opposite to that of radiator A. Therefore, its corresponding operating frequency can be adjusted higher to avoid adverse effects on radiator A. For example, the operating frequency of radiator D can be set higher than the operating frequencies of all radiators except radiator F. Radiator F has a high coupling with radiator E (the main radiator) but the desired current direction it generates is opposite to that of radiator A. At the same time, radiator F is farther away from radiator A. Therefore, the operating frequency of radiator F can be set to the highest to reduce the impact on both radiators.

[0437] In combination with the above content, in some possible cases, the radiators involved in the coexistence scenario of WiFi and B41 when the operating frequency is from low to high can be: radiator A, radiator E, radiator D, radiator B and radiator H, radiator C, radiator F.

[0438] FIG26 shows a schematic diagram of a preset frequency modulation rule 22b.

[0439] FIG26 is a curve diagram showing the S parameters of antenna 1 and antenna 2 in a Wi-Fi and B41 coexistence scenario obtained when performing a simulation effect test on an electronic device.

[0440] Figure 26 includes two curves: the "Antenna 2 - Coexistence State" curve, referred to as curve Q41, and the "Antenna 1 - Coexistence State" curve, referred to as curve Q42. Curve Q41 shows the frequency relationship between the radiators on Antenna 2 and the corresponding frequencies for each radiator in the Wi-Fi and B41 coexistence scenario. Curve Q42 shows the frequency relationship between the radiators on Antenna 1 and the corresponding frequencies for each radiator in the Wi-Fi and B41 coexistence scenario.

[0441] The letters A to F in Figure 26 represent radiators A to F, respectively. As shown in Figure 26, in some possible scenarios, in the coexistence of Wi-Fi and B41, the frequencies of the radiators primarily responsible for Wi-Fi's 2.4 GHz frequency band, from low to high, may be: radiator A (approximately 2.4 GHz), radiator D (approximately 2.7 GHz), radiators B and H (approximately 2.8 GHz), and radiator F. The frequency of radiator F is not shown in Figure 26, which can be understood as the higher frequency of radiator F. Radiator F and radiator D can be considered as radiators with radiator D as the primary radiator, and the current direction of radiator F is the same as that of radiator D.

[0442] The frequencies of the radiators mainly responsible for the WiFi 2.4G frequency band can be, from low to high, radiator E (about 2.55Ghz) and radiator C (about 3.8Ghz).

[0443] The operating frequency (not shown) of the radiator C is adjusted to a very high position (greater than 4 GHz), such as 5 GHz, 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 .

[0444] The frequency relationship of each radiator shown in FIG26 conforms to the aforementioned description of the preset frequency modulation rule 22b. This allows the desired current direction of each radiator in antenna 1 and antenna 2 to be the target current direction 22. The description of the target current direction 22 can be referred to the aforementioned description of (1) in FIG24 and will not be repeated here.

[0445] It should be understood that in a single-mode Wi-Fi scenario, antennas 1 and 2 can share a common radiator D. Figure 26 illustrates an example where radiation D is attributed to antenna 1. In practice, radiation D can also be attributed to antenna 2, but this is not a limitation in this embodiment of the present application.

[0446] FIG27 shows a schematic diagram comparing frequency modulation rules in a Wi-Fi and B41 coexistence scenario and a low-performance scenario 22. FIG.

[0447] FIG27 is a comparison curve diagram 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 subjected to simulation effect testing.

[0448] Figure 27 includes four curves: the curve "Antenna 2 - Coexistence State" is abbreviated as curve Q41, the curve "Antenna 1 - Coexistence State" is abbreviated as curve Q42, the curve "Antenna 2 - Scenario 22" is abbreviated as curve Q43, and the curve "Antenna 1 - Scenario 22" is abbreviated as curve Q44. Among them, 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 description of curves Q41 and Q42 is the same as that of curves Q41 and Q42 and their related content in Figure 26 above, and will not be repeated here.

[0449] It should be understood that curves Q43 and Q44 shown in Figure 27 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).

[0450] The letters A to F in Figure 27 represent radiators A to F, respectively. As shown in Figure 27, in low-performance scenario 22, the radiators primarily responsible for the Wi-Fi 2.4 GHz band include radiator A (the main radiator) and its primary parasitic radiators, which include radiators B and H. The radiators primarily responsible for the B41 band include radiator E (the main radiator) and its primary parasitic radiators, which include radiators F, C, and D.

[0451] In the low-performance scenario 22, the frequencies of the radiators mainly responsible for the WiFi 2.4G frequency band can be, from low to high, radiator A (approximately 2.4Ghz), radiator B, and radiator H (approximately 2.8Ghz).

[0452] The frequencies of the radiators primarily responsible for the Wi-Fi 2.4 GHz band are, from low to high, radiator E (approximately 2.6 GHz), radiator F (approximately 3.1 GHz), radiator C (approximately 3.8 GHz), and radiator D. The frequency of radiator D is not shown in FIG27 , which can be understood as radiator D having a higher frequency. Radiator D and radiator F can be considered as radiators with radiator F being the primary radiator, and the current direction of radiator D is the same as that of radiator F.

[0453] The frequency relationship of each radiator shown in curves Q43 and Q44 conforms to the aforementioned description of the preset frequency modulation rule 12b. This can be regarded as an example of 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 (2) in Figure 24, which will not be repeated here.

[0454] Compared to the operating frequencies of the radiators determined by the preset frequency modulation rule 21b, it can be seen that the operating frequency of at least one radiator in the Wi-Fi and B41 coexistence scenario has changed compared to the low-performance scenario 22. For example, the following changes may be included but are not limited to.

[0455] Radiator frequency change 51: The higher operating frequency of radiator D is changed to frequency 2.7, and the frequency of radiator F is changed from 3.1 GHz to a higher frequency. This change is reflected in the white circle ① in Figure 27. This radiator frequency change 51 can change 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 radiators F and radiator D is in the same direction as radiator E (the main radiator), and therefore in the opposite direction of radiator A. When radiator D is dominant, the current generated by radiators D and radiator F is in the same direction as radiator A (the main radiator). For the relevant description of the change in the direction of the current of radiator D and radiator F, please refer to the relevant description of the white circle ① in Figure 24 above, and will not be repeated here.

[0456] It should be understood that the operating frequency values ​​of the radiators shown in Figures 26 and 27 are for illustration purposes only and may be other values ​​in actual situations. For example, the operating frequency of the same radiator may be 1 GHz higher or lower than the operating frequency. This should not be construed as limiting the embodiments of the present application.

[0457] The following describes how, in a Wi-Fi and B41 coexistence scenario, at least one frequency control circuit adjusts the frequency of each radiator to ensure that the desired current direction generated by each radiator matches the target current direction 22, in accordance with preset frequency modulation rule 22b. The following also compares this adjustment process with a low-performance scenario.

[0458] FIG28 shows a schematic diagram of the frequency control circuit settings involved in the coexistence scenario of WiFi and B41 and the low-performance scenario 22.

[0459] The following describes how to adjust the frequency of each radiator shown in FIG. 27 based on FIG. 28 .

[0460] The frequency control circuit is connected to radiators C, E, D and F. The setting of the frequency control circuit mentioned here also describes the frequency adjustment of radiators C, E, D and F.

[0461] As shown in (1) in Figure 28, this is the frequency control circuit setting in the coexistence scenario of WiFi and B41. 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, 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, 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, radiator D is equivalent to connecting an inductor of about 20n, and the frequency is adjusted to about 2.7Ghz. For radiator F, the electronic device turns on switch w8 and turns off switch w7 in frequency control circuit 500f, turning on frequency modulation branch 528. This effectively connects an inductor of approximately 0.6n to radiator F, adjusting the frequency to a higher level.

[0462] As shown in (2) in FIG28 , the frequency control circuit setting in the low-performance scenario 22 is shown. Among them, the frequencies of radiators D and radiators F do not change compared to the wifi and B41 coexistence scenario. The control method of the frequency control circuit 500c connected thereto is the same as that in (1) in FIG28 , which 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, 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, radiator F is equivalent to connecting an inductor of about 5n, and the frequency is adjusted to about 3.1Ghz.

[0463] The following describes the beneficial effects of the Wi-Fi and B41 coexistence scenario compared to the low-performance scenario 22.

[0464] FIG29 is a comparison diagram of the efficiency of antenna 2 and antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 22 obtained during the simulation effect test of the electronic device.

[0465] As shown in FIG29 , the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (radiation efficiency or system efficiency) in dB.

[0466] In Figure 29, the "Radiation Efficiency - Coexistence" and "Radiation Efficiency - Scenario 22" curves represent the radiation efficiency of Antenna 2 in the coexistence and low-performance scenarios, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the coexistence scenario, the radiation efficiency of Antenna 2 is approximately -6.6 dB, while in low-performance scenario 22, the radiation efficiency is approximately -7.6 dB. Compared to low-performance scenario 22, the radiation efficiency of Antenna 2 in the coexistence state is improved by approximately 1 dB.

[0467] In Figure 29, the "System Efficiency - Coexistence" and "System Efficiency - Scenario 22" curves represent the system efficiency of Antenna 2 in the coexistence and low-performance scenarios, respectively. Antenna 2 operates at a frequency of 2.4 GHz. In the coexistence scenario, the system efficiency of Antenna 2 is approximately -7.9 dB, while in Low-Performance Scenario 22, the system efficiency is approximately -6.9 dB. Compared to Low-Performance Scenario 22, Antenna 2's system efficiency in the coexistence scenario also improves by 1 dB.

[0468] FIG30 is a comparison diagram of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 11 obtained during the simulation effect test of the electronic device.

[0469] As shown in (1) of Figure 30, 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" represent the radiation efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario 22, respectively. The curve "System Efficiency - Coexistence State" and the curve "System Efficiency - Scenario 22" represent the system efficiency of antenna 1 when it is working in the coexistence state scenario and the low-performance scenario, respectively. At this time, the operating frequency of antenna 1 is 2.55 GHz. The radiation efficiency of antenna 1 decreases from -3.6 dB in the low-performance scenario to -5.4 dB in the coexistence state of wifi and B41, and the system efficiency of antenna 1 decreases from -3.9 dB in the low-performance scenario to -5.8 dB in the coexistence state of wifi and B41. Compared with the low-performance scenario 22, the radiation efficiency of antenna 1 in the coexistence state of wifi and B41 decreases by about 1.6 dB.

[0470] As shown in (2) of Figure 30 , the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency (transmission efficiency) in dB. As shown in (2) of Figure 30 , the curve "Transmission Efficiency - Coexistence State" and the curve "Transmission Efficiency - Scenario 22" respectively represent the transmission efficiency of antenna 1 when operating in the coexistence state scenario and the low-performance scenario 22. The transmission efficiency indicated by point K21 is lower than the transmission efficiency indicated by point K22. Therefore, the transmission efficiency of antenna 1 in the coexistence state is slightly worse than that in the low-performance scenario 22.

[0471] Combining Figures 29 and 30, we can see that although Antenna 1's performance has declined, its radiation efficiency and system efficiency remain above -6dB, and its transmission efficiency is below -6dB. This indicates that Antenna 1's performance, while declining, remains good. Furthermore, Antenna 2's performance has improved. This means that while Antenna 2's performance has been improved, Antenna 1's performance has also been balanced.

[0472] It should be understood here that for this 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 besides the WiFi single state and the WiFi and B41 coexistence state. This embodiment of the present application will not be further described.

[0473] It should be understood that for this second antenna structure, when the electronic device is in another state, 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 besides the WiFi single state and the WiFi and B41 coexistence state. This embodiment of the present application will not be further described.

[0474] 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 practice, antenna A can also be other antennas responsible for other frequency bands, and this embodiment of the application is not limited to this.

[0475] The third antenna structure is described in detail below.

[0476] Based on the third antenna structure, the electronic device can, when in the wifi single state, frequency-modulate the radiators in antenna 1 and antenna 2 that are mainly responsible for the wifi2.4G frequency band according to the preset frequency modulation rule 23a, and use the antenna 1 to assist antenna 2 in improving performance, so that the electronic device has a 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 first antenna structure mentioned above, in the third antenna structure, more radiators can be used to be responsible for the GPS frequency band, so that the electronic device has a 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 description of Figures 32-33 and their related contents in the following content, which will not be repeated here.

[0477] Based on this 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 relevant content about the low-performance scenario 12, please refer to the aforementioned related description, which will not be repeated here.

[0478] FIG31 shows an example diagram of a third antenna structure.

[0479] As shown in Figure 31, the third antenna structure is similar to the first antenna structure mentioned above. Reference may be made to the description of the first antenna structure in Figure 3 and its related contents. For example, the same reference numerals in Figure 31 as in Figure 3 indicate the similarities between the first antenna structure and the third antenna structure. The similarities between the two antenna structures will not be repeated here, but the differences between the two antenna structures will be described. The differences between the third antenna structure and the first antenna structure mentioned above 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.

[0480] In the third antenna structure, the feed point 404c of radiator C is connected to the RF source 4 of the electronic device. This feed point 404c is connected to the first ground plane in the first device body 100 via a frequency control circuit 407c. The switching device included in this frequency control circuit 407c can select at least one frequency modulation branch, thereby adjusting the frequency of radiator C. The connection point 406e of radiator E is connected to the first ground plane in the first device body 100 via the frequency control circuit 407e. The switching device included in this frequency control circuit 407e can select at least one frequency modulation branch, thereby adjusting the frequency of radiator E. The connection point 406e of radiator E is connected to the first ground plane in the first device body 100 via the frequency control circuit 407e. The connection point 406d of radiator D is connected to the second ground plane in the second device body 200 via a frequency control circuit 407d. The switching device included in this frequency control circuit 407d can select at least one frequency modulation branch, thereby adjusting the frequency of radiator D. The connection point 406f of the radiator F is connected to the second ground plane in the second device body 200 via a frequency control circuit 407f. The switching 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 absence of a ground terminal, the length of the radiator H is not limited and can be longer or shorter than the length of the radiator B.

[0481] 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.

[0482] In the third antenna structure, since radiator C has a feed point, it does not belong to antenna 2, but to antenna 1. The subordinate relationships of the other radiators with antennas 1, 2, and 3 can be referred to the subordinate relationships of the radiators with antennas 1, 2, and 3 in the first antenna structure, and will not be repeated here.

[0483] In the third antenna structure, the operating frequency band (frequency range) of antenna 1 can include one or all of the medium-high frequency (MHB) band or the N78 band, and the feed in antenna 1 is generated at radiator C. The operating frequency band of antenna 2 includes the GPS band or the WiFi 2.4G band, and the feed in antenna 2 is generated at radiator A. In this case, antenna 2 can be responsible for providing GPS communication and 2.4G WiFi communication for electronic devices, and the feed in antenna 2 is generated at radiator G. The operating frequency band of antenna 3 includes one or more of the N78 band or the WiFi 5G band.

[0484] Regarding the communication method provided by each antenna for the electronic device based on the operating frequency, please refer to the description of the aforementioned related content, which will not be repeated here.

[0485] The following describes the relevant content involved in the Wi-Fi single-state scenario based on the third antenna structure mentioned above.

[0486] Compared to the first antenna structure, in the third antenna structure, when the electronic device is in the Wi-Fi single mode, the frequency of radiator B, in addition to the aforementioned frequency higher than radiator A (e.g., 2.6 GHz or 2.8 GHz), can also be adjusted to another frequency close to the GPS frequency band by the frequency control circuit connected to radiator B. The aforementioned frequency higher than radiator A can be referred to as frequency 11, and the other frequency close to the GPS frequency band can be referred to as frequency 12.

[0487] Thus, when the electronic device is in the Wi-Fi single mode, radiator B can not only distribute current at frequency 11 (in the same direction as the current of radiator A) to have a positive parasitic radiation effect on radiator A, which operates in the Wi-Fi 2.4G frequency band, but also distribute current at frequency 12 (in the same direction as the current of radiator A) to have a positive parasitic radiation effect on radiator A, which operates in the GPS frequency band.

[0488] Based on the third 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 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). The target current direction 31 is the current direction that satisfies the wifi single state when the third antenna structure is adopted. The radiators in the antenna 1 and 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.

[0489] 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.

[0490] FIG32 shows a target current direction 31 involved in a wifi single-state scenario.

[0491] The target current direction 31 describes the current direction of each radiator primarily responsible for the WiFi 2.4 GHz band when radiator A's operating frequency includes the WiFi 2.4 GHz band. Radiator A is the primary radiator, and the parasitic radiators include radiators B, C, and D. Based on the above, radiators B and C are first-class radiators, generating the same desired current direction as radiator A. Radiator D is a second-class radiator, generating the opposite desired current direction as radiator A.

[0492] In some possible cases, when the operating frequency of radiator A includes the WiFi 2.4G frequency band, the parasitic radiators of radiator A may also include other radiators. For example, radiators E, F, and H. Here, the frequencies of radiators E and F can be adjusted to be higher (higher than the frequency of radiator B) so that the currents generated by radiators E and F are weaker (weaker than the current distributed by radiator A). The parasitic effects of other radiators on radiator A are relatively small and are not further discussed.

[0493] It should be understood that radiator A's operating frequency includes not only the WiFi 2.4G band but also the GPS band. The radiators primarily responsible for the GPS band can include radiator A (primary radiator) and radiator B (parasitic radiator). In this case, the currents of radiator A and radiator B have the same direction.

[0494] FIG33 shows an exemplary current distribution simulation diagram of each radiator when the electronic device is in a wifi single-state scenario.

[0495] As shown in (1) in FIG33 , this 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. The current direction of each radiator corresponds to the current direction of each radiator in the target current direction 31 shown in FIG32 . 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.

[0496] As shown in (2) in Figure 33, this 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 mode. It can be seen that the current direction of radiator B is the same as that of radiator A (the main radiator).

[0497] Next, the preset frequency modulation rule 23 a involved in adjusting the target current direction 31 will be described.

[0498] In some possible cases, the preset frequency modulation rule 23a is used to adjust the frequency relationship between the radiators mainly responsible for the WiFi 2.4G frequency band and the radiators mainly responsible for the GPS frequency band.

[0499] The preset frequency modulation rule 23a may include: for the third antenna structure, when the electronic device is in the Wi-Fi single mode, adjusting the operating frequency of radiator A (main radiator) to include frequency 21 and frequency 22, where frequency 21 belongs to the Wi-Fi 2.4G frequency band and frequency 22 belongs to the GPS frequency band. Adjusting the operating frequency of radiator B to include frequency 11 and frequency 12, where frequency 11 is greater than operating frequency 21. Frequency 12 is greater than operating frequency 22. Adjusting the operating frequency of radiator C to be less than operating frequency 21. Adjusting the operating frequency of radiator D to be greater than operating frequency 21.

[0500] 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 a positive parasitic radiation effect on the main radiator.

[0501] FIG34 shows a schematic diagram of a preset frequency modulation rule 23a.

[0502] Figure 34 is a graph showing the S-parameters of antennas 1 and 2 in a Wi-Fi single-mode scenario, obtained during a simulation test of an electronic device. The horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0503] Figure 34 includes two curves: Curve N11 for "Antenna 2 - Wi-Fi Single Mode" and Curve N12 for "Antenna 1 - Wi-Fi Single Mode." Curve N11 shows the frequency relationships and corresponding frequencies of the radiators in Antenna 2 in the Wi-Fi Single Mode scenario. Curve N12 shows the frequency relationships and corresponding frequencies of the radiators in Antenna 1 in the Wi-Fi Single Mode scenario.

[0504] The letters AD in Figure 34 represent radiators A to D respectively. As can be seen from Figure 34, in the wifi single-state scenario, the radiators mainly responsible for the wifi2.4G frequency band can be, in order from low to high frequency, radiator C (approximately 2.0Ghz), radiator D (approximately 2.3Ghz), radiator A (main radiator, approximately 2.44Ghz), and radiator B (approximately 2.7Ghz). The frequency relationship of the radiators mainly responsible for the wifi2.4G frequency band in Figure 34 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 aforementioned description of Figure 32 and will not be repeated here.

[0505] Figure 34 also shows that in the Wi-Fi single-mode scenario, the radiators primarily responsible for the GPS frequency band are, in ascending order of frequency, radiator A (main radiator, approximately 1.53 GHz) and radiator B (approximately 1.7 GHz). This ensures that when radiator A's operating frequency falls within the GPS band, radiator B can generate current in the same direction as radiator A, helping to improve Antenna 2's performance in the GPS band.

[0506] It should be understood that, as shown in FIG34 , the frequency of radiation D is adjusted closer to radiator A (the main radiator) than to radiator C. This is because radiator D is farther away from radiator A than radiator C. If radiator D is to provide a more positive parasitic radiation effect on radiator A, the frequency of radiation D needs to be adjusted relatively close to radiator A. Otherwise, the current excited by radiator D will be weak, and the positive parasitic radiation effect on radiator A will be small. The following describes how to adjust the frequencies of the radiators shown in FIG34 .

[0507] Radiator A can generate two operating frequencies through 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 frequency selection circuits. Radiator B, by turning off the switch unit of the frequency control circuit 407b or directly connecting to the ground, acts as an equivalent capacitor to the GPS frequency band and as an equivalent large capacitor or small inductor to the wifi2.4G frequency band, thereby generating two different frequencies, including frequency 11 (approximately 2.7 GHz) and frequency 12 (approximately 1.7 GHz). Radiator C adjusts the frequency of radiator C to approximately 2.0 GHz by switching the switch unit of the frequency control circuit 407c. Radiator D adjusts the frequency of radiator D to approximately 2.3 GHz by switching the switch unit of the frequency control circuit 407d. The radiator E and the radiator F are respectively switched to switches connected to small inductors by the frequency control circuits 407e and 407f, so as to adjust the radiator E and the radiator F to a higher frequency.

[0508] In some possible cases, the frequency adjustment method for radiator C is the same as that for radiator E shown in (1) of FIG8 , and the frequency adjustment method for radiator D is the same as that for radiator D shown in (1) of FIG8 . Please refer to the description of the relevant content above and will not be repeated here.

[0509] The following describes the radiation efficiency and system efficiency of antenna 2 in the Wi-Fi single-state scenario.

[0510] FIG35 is a comparison diagram of the radiation efficiency and system efficiency of antenna 2 in a Wi-Fi single-state scenario obtained when performing a simulation effect test on an electronic device.

[0511] As shown in Figure 35, 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 antenna's radiation efficiency and system efficiency, respectively. This also indicates better antenna performance. The "Radiation Efficiency - Wi-Fi Only" curve and the "System Efficiency - Wi-Fi Only" curve represent the radiation efficiency and system efficiency of Antenna 2 in the Wi-Fi Only scenario, respectively.

[0512] In the third antenna structure, when the operating frequency of antenna 2 is 1.53 GHz (GPS band), the radiation efficiency is -2.9 dB and the system efficiency is -3.25 dB. Referring to FIG9 , in the first antenna structure, when the operating frequency of antenna 2 is 1.53 GHz, the radiation efficiency and system efficiency are both below -4 dB. Compared to the case where frequency modulation is performed according to preset frequency modulation rule 21a for the first antenna structure, frequency modulation according to preset frequency modulation rule 23a can improve the performance of antenna 2 in the GPS band in a single Wi-Fi scenario.

[0513] In the third antenna structure, when the operating frequency of antenna 2 is 2.44 GHz (wifi band), the radiation efficiency is -2.17 dB and the system efficiency is -2.67 dB. Referring to FIG9 , in the first antenna structure, when the operating frequency of antenna 2 is 2.44 GHz (which can be approximately equal to 2.4 GHz), the radiation efficiency is -2.8 dB and the system efficiency is -3.3 dB. Compared to the performance of the first antenna structure in the low-performance scenario 11, when frequency modulation is performed according to the preset frequency modulation rule 23a, the performance of antenna 2 in the wifi 2.4 GHz band can still be improved in the wifi single-state scenario.

[0514] The following describes the relevant content involved in the coexistence scenario of WiFi and B41 based on the third antenna structure mentioned above.

[0515] Based on the third antenna structure in the present application, when the electronic device is in the coexistence state of wifi and B41, the electronic device can readjust the operating frequency of antenna 2 and the 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. 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.

[0516] FIG36 shows a target current direction 32 involved in a scenario where WiFi and B41 coexist.

[0517] As shown in Figure 36, compared to 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 when providing cellular network communication (in the B41 frequency band) to the electronic device. In addition to radiator C, the radiators mainly responsible for the B41 frequency band may also include radiators E and radiators F. In this case, the electronic device can adjust the operating frequency of radiator C to the B41 frequency band, for example, to 2.55 GHz. In addition, the frequencies of radiators E and F are adjusted to be higher than those of radiator C, so that radiators E and F, as parasitic radiators, can excite currents in the same direction as radiator A.

[0518] As shown in Figure 36, in the third antenna structure, when the electronic device is in a Wi-Fi and B41 coexistence state, radiator A is the primary radiator providing 2.4G Wi-Fi communication for the electronic device. In addition to radiator A, radiators primarily responsible for the Wi-Fi 2.4G frequency band may also include radiators H, radiator B, and radiator D. In this case, the operating frequency of radiator A can be adjusted to the Wi-Fi 2.4G frequency band, for example, to 2.4 GHz. The operating frequency of radiator D is adjusted to be lower than that of radiator A, so that radiator D, as a parasitic radiator, stimulates a current in the same direction as radiator A. Furthermore, the frequency of radiator B is adjusted to be higher than that of radiator A, so that radiator B, as a parasitic radiator, stimulates a current in the same direction as radiator A. Radiators H and B can be considered a single parasitic radiator with radiator B as the primary radiator. Thus, radiators H and B have the same frequency and stimulate currents in the same direction.

[0519] The frequency of radiator D can be adjusted by frequency control circuit 407d connected to radiator D, acting as a large capacitor for the 2.4G WiFi band and a short circuit for the B41 band, effectively ignoring it. This allows radiator D to assist radiator A in providing 2.4G WiFi communication without affecting radiator C's cellular network communication (in the B41 band).

[0520] It should also be understood that in some possible situations, when radiator A resonates in the Wi-Fi 2.4 GHz frequency band, radiator G and radiator A can be considered a parasitic radiator with radiator A as the primary radiator, and radiator G can also excite a current in the same direction as radiator A. In this case, the resonance generated by radiator G has a positive parasitic radiation effect on radiator A, which can improve the performance of antenna 2.

[0521] In some possible cases, in the third antenna structure, when the electronic device is in the 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 aforementioned first antenna structure, and will not be repeated here.

[0522] 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.

[0523] FIG37A and FIG37B show exemplary current distribution simulation diagrams of each radiator when the electronic device is in a wifi and B41 coexistence scenario.

[0524] As shown in (1) in FIG37A , this is an exemplary current distribution simulation diagram of each radiator primarily responsible for the WiFi 2.4G frequency band when the electronic device is in a WiFi and B41 coexistence state. The current direction of each radiator corresponds to the current direction of each radiator in the target current direction 32 shown in FIG36 . 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.

[0525] As shown in (2) in FIG37A , this is a simulation diagram of the current distribution of each radiator responsible for the WiFi 2.4G band in a low-performance electronic device scenario 12. At this time, the current direction of radiators D and F is the same as that of radiator A, which will cause the performance of antenna 2 (including radiator A) to degrade.

[0526] As shown in (1) in FIG37B , this is an exemplary current distribution simulation diagram of each radiator primarily responsible for the B41 frequency band when the electronic device is in a Wi-Fi and B41 coexistence scenario. The current direction of each radiator corresponds to the current direction of each radiator in the target current direction 32 shown in FIG36 . 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.

[0527] As shown in (2) in FIG37B , this is a simulation diagram of the current distribution of each radiator mainly responsible for the B41 frequency band in the electronic device in the low-performance scenario 12. In this case, radiator C (the main radiator) mainly uses radiators E and D as parasitic radiators.

[0528] FIG38 shows a frequency diagram of the radiators mainly responsible for the B41 frequency band.

[0529] Figure 38 shows a curve diagram of the S parameters of antenna 1 in a Wi-Fi and B41 coexistence scenario, obtained during a simulation test of an electronic device. As shown in Figure 38, the horizontal axis represents frequency in GHz, and the vertical axis represents the amplitude of S11 in dB.

[0530] The letters C, E, and F in Figure 38 represent radiators C, E, and F, respectively. Figure 38 shows that in some possible scenarios where Wi-Fi and B41 coexist, radiator C (the main radiator) can be set to 2.55 GHz, which falls within the B41 frequency band. The frequencies of radiators E and F are set to 2.9 GHz and 3.4 GHz, respectively, both higher than the frequency band of radiator C. This ensures that the currents distributed by radiators E and F are in the same direction as radiator C.

[0531] As shown in FIG38 , the frequency of radiator F is adjusted closer to radiator C than that of radiator E. This is because radiator F is farther away from radiator C than radiator E. If radiator F is to provide a more positive parasitic radiation effect for radiator C, the frequency of radiator F needs to be adjusted relatively close to radiator C. Otherwise, the current excited by radiator F will be weak, and the positive parasitic radiation effect on radiator C will be small.

[0532] FIG39 is a comparison chart of the efficiency of the electronic device in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12 obtained during the simulation effect test.

[0533] As shown in (1) in Figure 39, 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 during the simulation 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 2.4 GHz (belonging to the Wi-Fi 2.4 GHz frequency band) in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12. At this time, in the Wi-Fi and B41 coexistence scenario, the radiation efficiency of antenna 2 is approximately -2.7 dB, and in the low-performance scenario 12, the radiation efficiency of antenna 2 is approximately -3.5 dB. Compared with the low-performance scenario 12, in the coexistence state, the radiation efficiency of antenna 2 is improved by approximately 0.8 dB.

[0534] In Figure 39 (1), the curves "System Efficiency - Coexistence" and "System Efficiency - Scenario 12" represent the system efficiency when antenna 2 is operating in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12, respectively. It can be seen that compared with the low-performance scenario 12, the system efficiency in the Wi-Fi and B41 coexistence scenario has improved.

[0535] As shown in (2) in Figure 39, this is a comparison chart of the efficiency of antenna 1 in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12 obtained during the simulation 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 2.55 GHz (belonging to the B41 frequency band) in the Wi-Fi and B41 coexistence scenario and the low-performance scenario 12. At this time, in the Wi-Fi and B41 coexistence scenario, the radiation efficiency of antenna 1 is about -2.9 dB, and in the low-performance scenario 12, the radiation efficiency of antenna 1 is about -2.2 dB. Compared with the low-performance scenario 12, in the coexistence state, the radiation efficiency of antenna 1 is reduced by about 0.7 dB, but is still close to 0 dB, indicating that the radiation efficiency of antenna 2 is still good at this time.

[0536] In Figure 39 (2), the curves "System Efficiency - Coexistence" and "System Efficiency - Scenario 12" represent the system efficiency when antenna 1 is operating in the Wi-Fi and B41 coexistence scenario and low-performance scenario 12, respectively. It can be seen that compared to low-performance scenario 12, the system efficiency in the Wi-Fi and B41 coexistence scenario has decreased, but is still close to 0 dB, indicating that the system efficiency of antenna 1 is still relatively good.

[0537] It should be understood that, in addition to the three antenna structures described above, other antenna structures can be obtained based on the fixed structure of this application. However, the frequency modulation rules involved in the WiFi single state and the WiFi and B41 coexistence state can be similar or identical, and can be directly or deduced based on the above content. The embodiments of this application will not be repeated here. The frequency control circuits shown in each antenna structure are illustrative. In actual applications, the frequency control circuits can also be adjusted and should not constitute a limitation on the embodiments of this application.

[0538] 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 Wi-Fi single state and the Wi-Fi and B41 coexistence state. For example, here the 2.4G Wi-Fi communication mode is not enabled but the cellular network (in the MHB band) communication mode is enabled.

[0539] 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.

[0540] FIG40 shows an exemplary antenna structure involved in the MHB single-state scenario.

[0541] As shown in Figure 40 , the antenna structure involved in the MHB single-mode scenario is similar to the third antenna structure described above, except that the frequency control circuit connected to connection point 406b of radiator B includes multiple frequency modulation branches. Feed point 104a of radiator A is connected to the frequency control circuit and then to ground via a switch unit. Radiator H may or may not include a ground terminal.

[0542] Compared to the frequency control circuit 407b connected to radiator B in FIG31 , the frequency control circuit connected to radiator B in FIG40 includes more frequency modulation branches, which enables radiator B to adjust to more frequency bands. The frequency control circuit connected to radiator A includes multiple frequency modulation branches, which enables radiator A to adjust to multiple different frequency bands.

[0543] FIG41 shows an exemplary frequency modulation rule involved in the MHB single-state scenario.

[0544] Letters AF in FIG41 represent radiator A to radiator F, respectively.

[0545] As shown in Figure 41, 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, radiators E, and radiators 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, which can act as a positive parasitic radiator for the radiator C, thereby enabling the electronic device to communicate with other electronic devices through a cellular network (in the MHB frequency band) communication method. At the same time, radiator A generates a frequency lower than the MHB frequency (belonging to the MHB frequency band) by switching the capacitor. 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.

[0546] 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.

[0547] It should be understood that the frequency control circuits involved in the aforementioned content are all LC series circuits. In actual situations, they can also be other forms of frequency selection circuits, which are not limited in the embodiments of the present application.

[0548] It should also be understood that in the aforementioned context, the frequencies of radiators B and H are controlled to meet the required frequencies by controlling the lengths of the radiators. In practice, as shown in FIG42 , a frequency control circuit can be added between radiators B or H to adjust the frequencies of radiators B and H, respectively.

[0549] According to the frequency modulation rules involved in this application, the performance of antenna A (such as antenna 2) can be improved when the electronic device is in a folded state. This 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 be reduced, and the transmission power of the antenna can be increased, thereby improving 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) refers to the electromagnetic power absorbed by 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 the low-performance scenario 11 (the operating frequency of antenna 1 is the medium-high frequency B3 band). The SAR of the top surface of the electronic device can be reduced from 1.78 to 1.29 compared to the SAR in low-performance scenario 11 (antenna 1 operating in the mid-high frequency B3 band). It should be understood that the above description of SAR is based on a 5mm body with 10g, normalized to -6dB.

[0550] In the aforementioned related content, radiator A can adjust its frequency through matching. In addition to the WiFi 2.4G band, the frequency of radiator A can also include other frequency bands. For example, referring to Figures 6, 12, 20, and 26, radiator A also has a frequency between 1.55 GHz and 1.65 GHz. This frequency belongs to the GPS band and can provide GPS communication for electronic devices.

[0551] The aforementioned radiator G can provide 5G communication and 5G wifi communication for the electronic device. It is not used to participate in improving the performance of the antenna 2. When the electronic device does not enable 5G communication mode and 5G wifi communication mode, the radiator G can also be used to improve the performance of the antenna 2.

[0552] The following describes a phenomenon in which the more parasitic radiators that meet condition 1 and generate current in the same direction as the main radiator, the more the performance of the target antenna (including the main radiator) is improved.

[0553] As shown in (1) of Figure 43, 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 the radiators are arranged in a straight line, the floor eigenmode of the floor is shown in (2) of Figure 43, indicating that the floor eigenmode is well excited.

[0554] The more parasitic radiators that satisfy condition 1 and have current flowing in the same direction as radiator A (the main radiator), the greater the magnetic vector potential of radiator A, which in turn can increase the efficiency (e.g., radiation efficiency) of the target antenna (including radiator A). The relationship between the magnetic vector potential and the current flowing in the same direction can be referred to in the following formulas (1) and (2).

[0555] In formula (1), represents the magnetic vector position of the radiator A, The sum of the currents of the parasitic radiators of radiator A is greater. Formula (2) shows that the more radiators with the same current direction as radiator A (main radiator), Based on formula (1) and formula (2), it can be seen that the more radiators with the same current direction as radiator A (main radiator), the greater the magnetic vector position of radiator A.

[0556] The relationship between the efficiency of the radiator A and the magnetic vector position can be referred to the following formula (3).

[0557] In formula (3), P represents the efficiency of radiator A. Based on formula (3), it can be seen that the larger the magnetic vector position of radiator A is, the higher the efficiency (for example, radiation efficiency) of the target antenna (including radiator A) is.

[0558] Based on formulas (1) to (3), it can be seen that the more parasitic radiators that meet condition 1 and have currents in the same direction as radiator A (main radiator), the higher the efficiency (eg, radiation efficiency) of radiator A.

[0559] The following describes a phenomenon in which the more parasitic radiators that meet condition 2 and generate current in the opposite direction to that generated by the main radiator, the more the performance of the target antenna (including the main radiator) is improved.

[0560] As shown in FIG44 , when the current directions of radiator D and radiator A are opposite, the equivalent current of the target antenna (including radiator A) is and equivalent magnetic current Orthogonal, similar to magneto-electric dipole, the two radiations complement each other, making the radiation efficiency of the target antenna good.

[0561] It should be understood that the aforementioned first antenna branch 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 .

[0562] In some possible cases, the first antenna branch includes at least the aforementioned radiators A and C. The second antenna branch includes at least the aforementioned radiators B and D. When the electronic device is in the folded state, the projection of the first antenna branch on the second device body 200 overlaps with the second antenna branch. For the description of each radiator, refer to the aforementioned description of radiators A through D and will not be repeated here.

[0563] 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.

[0564] FIG45 shows a schematic diagram of current distribution of radiator A-radiator D when the electronic device is in the wifi single state in this case.

[0565] As shown in (1) in FIG45 , this 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. Here, current A is distributed on radiator A, and currents in the same direction as current A are distributed on radiators B and C. Currents in the opposite direction to 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 description of adjusting the frequency of radiator A-radiator D in FIG5A and its related content, which will not be repeated here.

[0566] As shown in (2) of FIG45 , this is a schematic diagram of the current distribution of radiator A-radiator D when the electronic device is in the wifi single mode, 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. Here, current A is distributed on radiator A, and currents in the same direction as current A are distributed on radiators B, C, and D. At this time, the method for adjusting the frequency of radiator A-radiator D can refer to the aforementioned description of adjusting the frequency of radiator A-radiator D in FIG19A and its related content, and will not be repeated here.

[0567] 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.

[0568] For example, in another possible scenario, the first antenna branch may include not only the aforementioned radiators A and C, but also radiator E. The second antenna branch may include not only the aforementioned radiators B and D, but also radiator F. For the description of each radiator, reference may be made to the aforementioned description of radiators A through F, and will not be repeated here.

[0569] 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.

[0570] FIG46 shows a schematic diagram of current distribution of radiator A-radiator D when the electronic device is in the wifi single state in this case.

[0571] As shown in (1) in Figure 46, this 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.

[0572] As shown in (2) in Figure 46, this 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 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.

[0573] As shown in Figure 46 (1) and Figure 46 (2), currents are distributed on radiators E and F in the same direction as radiator A. The current distribution of radiators A and D can be referred to the description of Figure 45 above. Regarding the frequency adjustment of radiators A and F, please refer to the description of the relevant content above and will not be repeated here.

[0574] In some possible cases, one of the feeding points can be set on radiator A, and the other radiator can be set on radiator E. As shown in Figure 47, 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.

[0575] As shown in (1) of FIG47 , this is a schematic diagram of the current distribution of radiator A to radiator F when the electronic device is in a wifi and B41 coexistence 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. In this case, the L-shaped frame specifically includes a horizontal frame and a vertical frame, radiator E is specifically provided on the vertical frame, and radiator A is specifically provided on the horizontal frame. The horizontal frame is perpendicular to the vertical frame.

[0576] Radiators A, B, and D are primarily responsible for the Wi-Fi 2.4G frequency band. Radiators E and F are primarily responsible for the B41 frequency band. Current B flows through radiator A, current flows through radiator B in the same direction as current B, and current flows through radiator D in the opposite direction of current B. Current C flows through radiator E, and current flows through radiator F in the same direction as current C. For information on adjusting the frequency of radiators A and F, refer to the aforementioned description of adjusting the frequency of radiators A and F in Figure 10 and related content, and will not be repeated here.

[0577] 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.

[0578] As shown in (2) in Figure 47, this 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.

[0579] Radiators A, B, D, and F are primarily responsible for the Wi-Fi 2.4G frequency band. Radiators E and C are primarily responsible for the B41 frequency band. Current B flows through radiator A, and currents flowing in the same direction as current B flow through radiators B, C, D, and F. Current C flows through radiator E, and current flowing in the same direction as current C flows through radiator C. For information on adjusting the frequencies of radiators A and F, refer to the aforementioned description of adjusting the frequencies of radiators A and F in Figure 24 and related content, and will not be repeated here.

[0580] 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 rather indicate that the two frames are different.

[0581] 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 the radiator A sends 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 an excitation signal. The embodiments of the present application are not limited to this. For example, the other feeding point can be placed on the radiator E, or it can be placed on other radiators. For example, when placed on the radiator E, the excitation source connected to the feeding point on the radiator E may or may not send an excitation signal.

[0582] In some possible cases, in a scenario where WiFi and B41 coexist, both the excitation source connected to the feeding point in radiator A and the excitation source connected to the feeding point in radiator E can send excitation signals.

[0583] In summary, in the embodiments of the present application, in the Wi-Fi only scenario and the Wi-Fi and B41 coexistence scenario, whether the excitation source connected to each feeding point sends an excitation signal is not emphasized, and this should not constitute a limitation on the embodiments of the present application.

[0584] In some possible cases, one of the feeding points can be set on radiator A, and the other radiator can be set on radiator C. As shown in Figure 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.

[0585] As shown in Figure 48, 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. 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 of 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 radiators E and radiator F. At this time, the method of adjusting the frequency of radiator A-radiator F can refer to the aforementioned description of adjusting the frequency of radiator A-radiator F in Figure 36 and related content, and will not be repeated here.

[0586] As described above, as used 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 phrases “upon determining…” or “if (stated condition or event) is detected” may be interpreted to mean “if determining…” or “in response to determining…” or “upon detecting (stated condition or event)” or “in response to detecting (stated condition or event)”, depending on the context.

[0587] 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, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate 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, 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; 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, 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 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 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.

4. The folding screen electronic device according to claim 3, characterized in that: 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 the opposite direction to the first current is distributed on the fourth radiation segment.

5. The folding screen electronic device according to claim 1 or 2, 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.

6. The folding screen electronic device according to claim 5, characterized in that: 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.

7. The folding screen electronic device according to any one of claims 1 to 6, 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 gap between the fifth radiation section and the third radiation section; a grounding terminal is provided on the fifth radiation section; There is a gap between the sixth radiation section and the fourth radiation section; and a grounding terminal is provided on the sixth radiation section.

8. The folding screen electronic device according to claim 7, 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.

9. The folding screen electronic device according to any one of claims 3 to 8, characterized in that: Currents with the same direction as the first current are distributed on the fifth radiation segment and the sixth radiation segment.

10. The folding screen electronic device according to any one of claims 3 to 9, 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.

11. The folding screen electronic device according to claim 10, characterized in that: The second radiating section is connected to a fifth tuning circuit.

12. The folding screen electronic device according to claim 11, 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.

13. The folding screen electronic device according to claim 7 or 8, characterized in that: The fifth radiating section is also provided with a second feeding point.

14. The folding screen electronic device according to claim 13, 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.

15. The folding screen electronic device according to claim 13, characterized in that: 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.

16. The folding screen electronic device according to claim 15, characterized in that: The current distributed on the third radiation segment is weaker than the second current and the third current.

17. The folding screen electronic device according to claim 15, characterized in that: No current is distributed on the third radiation segment.

18. The folding screen electronic device according to any one of claims 15 to 17, characterized in that: When the fifth radiation segment and the first radiation segment are specifically arranged on the horizontal frame, the second current is distributed on the first radiation segment, and the second radiation segment, the fourth radiation segment and the sixth radiation segment are all distributed with currents in the same direction as the second current; and the third current is distributed on the fifth radiation segment, and the third radiation segment is distributed with a current in the same direction as the third current.

19. The folding screen electronic device according to claim 7 or 8, characterized in that: The third radiating section is also provided with a third feeding point.

20. The folding screen electronic device according to claim 18, characterized in that: 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.

21. The folding screen electronic device according to any one of claims 15 to 17, 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.

22. The folding screen electronic device according to claim 18 or 19, 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.

23. The folding screen electronic device according to any one of claims 7 to 21, 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 gap between the seventh radiation section and the first radiation section; the seventh radiation section is provided with a grounding terminal; There is a gap between the eighth radiation section and the second radiation section; and a grounding terminal is provided on the eighth radiation section.

24. The folding screen electronic device according to claim 22, 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.

25. The folding screen electronic device according to claim 22 or 23, 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.

26. The folding screen electronic device according to any one of claims 22 to 24, characterized in that: A fourth feeding point is also provided on the eighth radiating segment.

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