Electronic device

Abstract

The present application relates to the technical field of communications, and discloses an electronic device. The electronic device comprises a first antenna, a second antenna and a third antenna which are located on a main structure; a first spacing is formed between the first antenna and the second antenna, and a second spacing is formed between the second antenna and the third antenna; the end of the first antenna close to the second antenna is connected to a first feed source; a first switch is provided between the first antenna and the first feed source; the end of the second antenna close to the third antenna is connected to a second feed source; the end of the third antenna close to the second antenna is connected to a third feed source; a second switch is provided between the third antenna and the third feed source; and a first tuning circuit and a second tuning circuit are respectively connected to two sides of a return point of the second antenna.

Description

An electronic device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411204783.5, filed in China on August 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, and specifically relates to an electronic device. Background Technology

[0004] As people's demands for mobile communication continue to evolve, the mobile communication technologies integrated into mobile phones are becoming increasingly numerous, advanced, and complex, thus requiring more and more antennas. Meanwhile, the diversity of usage scenarios demands ever-increasing antenna performance and minimizing interference between antennas. Furthermore, the pursuit of portability and ease of use in mobile phones leads to continuous miniaturization, creating a contradiction between the ever-increasing number of antennas, the need for ever-improving antenna performance, and the ever-shrinking antenna space.

[0005] Currently, mobile phones typically employ dual-mode antennas with separate structures, providing relatively independent space for antennas operating at the same or near frequency to reduce mutual interference. However, while dual-mode antennas can address mutual interference between multiple antennas by widening the isolation ground and by decoupling the network to improve isolation, these methods require more space and still cannot completely eliminate mutual interference. Summary of the Invention

[0006] The purpose of this application is to provide an electronic device that can realize more antenna modes in a limited space and improve antenna performance.

[0007] This application provides an electronic device, including:

[0008] The first antenna, the second antenna, and the third antenna are located on the main structure, with a first gap between the first antenna and the second antenna, and a second gap between the second antenna and the third antenna;

[0009] The first antenna is connected to a first feed source at one end near the second antenna, and a first switch is provided between the first antenna and the first feed source; the second antenna is connected to a second feed source at one end near the third antenna; the third antenna is connected to a third feed source at one end near the second antenna, and a second switch is provided between the third antenna and the third feed source; a first tuning circuit and a second tuning circuit are respectively connected to the two sides of the return point of the second antenna.

[0010] Optionally, the first tuning circuit includes a third switch and a first parallel path group;

[0011] The first end of the first parallel path group is grounded, the second end of the first parallel path group is connected to the first end of the third switch, and the second end of the third switch is connected to the second antenna.

[0012] Optionally, the second tuning circuit includes a fourth switch and a second parallel path group;

[0013] The first end of the second parallel path group is grounded, the second end of the second parallel path group is connected to the first end of the fourth switch, and the second end of the fourth switch is connected to the second antenna.

[0014] Optionally, the first end of the first switch is connected to the first feed source;

[0015] The second terminal of the first switch is connected to the first terminal of the third parallel path group, and the second terminal of the third parallel path group is grounded;

[0016] The third terminal of the first switch is connected to the first terminal of the first series path group, and the second terminal of the first series path group is connected to the first antenna.

[0017] Optionally, the first terminal of the second switch is connected to the third antenna;

[0018] The second terminal of the second switch is connected to the first terminal of the fourth parallel path group, and the second terminal of the fourth parallel path group is grounded;

[0019] The third terminal of the second switch is connected to the first terminal of the second series path group, and the second terminal of the second series path group is connected to the third feed source.

[0020] Optionally, the third antenna is also connected to a first capacitor, and the first position on the third antenna is located on the side of the second position away from the second interval;

[0021] Wherein, the first position is the connection position between the third antenna and the first capacitor, and the second position is the connection position between the third antenna and the third feed source.

[0022] Optionally, the electronic device further includes:

[0023] A control circuit, which is connected to the first switch, the second switch, the third switch of the first tuning circuit, and the fourth switch of the second tuning circuit, respectively.

[0024] The control circuit controls the operating states of the first switch, the second switch, the third switch, and the fourth switch respectively through control signals.

[0025] Optionally, the main structure is further provided with a third interval and a fourth interval, wherein the third interval is located on the side of the third antenna away from the second antenna, and the fourth interval is located on the side of the first antenna away from the second antenna;

[0026] The third antenna is connected to a third tuning circuit at one end near the third interval; the first antenna is connected to a fourth tuning circuit at one end near the fourth interval.

[0027] Optionally, the third tuning circuit includes a fifth switch and a fifth parallel path group;

[0028] The first end of the fifth parallel path group is grounded, the second end of the fifth parallel path group is connected to the first end of the fifth switch, and the second end of the fifth switch is connected to the third antenna.

[0029] Optionally, the fourth tuning circuit includes a sixth switch and a sixth parallel path group;

[0030] The first end of the sixth parallel path group is grounded, the second end of the sixth parallel path group is connected to the first end of the sixth switch, and the second end of the sixth switch is connected to the first antenna.

[0031] Optionally, the control circuit is also connected to the fifth switch of the third tuning circuit and the sixth switch of the fourth tuning circuit.

[0032] The control circuit controls the operating states of the fifth switch and the sixth switch respectively through the control signal.

[0033] Optionally, the main structure further includes a fourth antenna and a fifth antenna, wherein a fourth gap is provided between the fourth antenna and the first antenna, and a fifth gap is provided between the fourth antenna and the fifth antenna;

[0034] The first antenna is connected to a fourth feed source and a fifth feed source at the end closest to the fourth antenna; the fourth antenna is connected to a sixth feed source at the end closest to the fifth antenna, and a seventh switch is provided between the fourth antenna and the sixth feed source; the fifth antenna is connected to a seventh feed source at the end closest to the fourth antenna, and an eighth switch is provided between the fifth antenna and the seventh feed source.

[0035] Optionally, the first end of the seventh switch is connected to the sixth feed source;

[0036] The second terminal of the seventh switch is connected to the first terminal of the seventh parallel circuit group, and the second terminal of the seventh parallel circuit group is grounded.

[0037] The third terminal of the seventh switch is connected to the first terminal of the third series path group, and the second terminal of the third series path group is connected to the fourth antenna.

[0038] Optionally, the first end of the eighth switch is connected to the seventh feed source;

[0039] The second terminal of the eighth switch is connected to the first terminal of the eighth parallel path group, and the second terminal of the eighth parallel path group is grounded.

[0040] The third terminal of the eighth switch is connected to the first terminal of the fourth series path group, and the second terminal of the fourth series path group is connected to the fifth antenna.

[0041] Optionally, the control circuit is also connected to the seventh switch and the eighth switch;

[0042] The control circuit controls the operating states of the seventh switch and the eighth switch respectively through the control signal.

[0043] Optionally, the control signal is determined based on the operating status of each antenna in the electronic device.

[0044] In this embodiment, the first feed source F1 can be used as the feed source of a cellular antenna, the first antenna A1 as the radiating body of the cellular antenna, and the first tuning circuit M1 as the parasitic loading position of the cellular MHB antenna; the second feed source F2 can be used as the feed source of a wireless network antenna; the third feed source F3 can be used as the feed source of a GPS + wireless network antenna, the third antenna A3 as the radiating body of the GPS + wireless network antenna, and the second tuning circuit M2 as the loading position of the two antennas on the left side of the return point G0; the second antenna A2 is the T-stub part shared by the antennas on the left and right sides of the return point G0. In this way, more antenna modes can be realized in a limited space, thereby improving antenna performance. Attached Figure Description

[0045] Figure 1 is a schematic diagram of an electronic device according to an embodiment of this application;

[0046] Figure 2 is a circuit diagram of an electronic device according to an embodiment of this application;

[0047] Figure 3 is a second schematic diagram of an electronic device according to an embodiment of this application;

[0048] Figure 4 is a third schematic diagram of an electronic device according to an embodiment of this application;

[0049] Figure 5 is a fourth schematic diagram of an electronic device according to an embodiment of this application;

[0050] Figure 6 is a fifth schematic diagram of an electronic device according to an embodiment of this application;

[0051] Figure 7 is a schematic diagram of an electronic device according to an embodiment of this application;

[0052] Figure 8 is a schematic diagram of the switch control of the control circuit;

[0053] Figure 9 is one of the flowcharts for the switching control of an IC;

[0054] Figure 10 is one of the schematic diagrams comparing efficiency curves;

[0055] Figure 11 is one of the schematic diagrams comparing reflection loss;

[0056] Figure 12 is the second schematic diagram comparing efficiency curves;

[0057] Figure 13 is the second schematic diagram comparing reflection loss;

[0058] Figure 14 is the third schematic diagram comparing efficiency curves;

[0059] Figure 15 is the third schematic diagram comparing reflection loss;

[0060] Figure 16 is the fourth diagram showing the comparison of efficiency curves;

[0061] Figure 17 is the fourth schematic diagram comparing reflection loss;

[0062] Figure 18 is one of the circuit mode diagrams;

[0063] Figure 19 is a schematic diagram of the second circuit mode;

[0064] Figure 20 is the third schematic diagram of the circuit mode;

[0065] Figure 21 is the fourth schematic diagram of the circuit mode;

[0066] Figure 22 is the fifth schematic diagram of the circuit mode;

[0067] Figure 23 is the sixth schematic diagram of the circuit mode;

[0068] Figure 24 is the seventh schematic diagram of the circuit mode;

[0069] Figure 25 is the eighth schematic diagram of the circuit mode;

[0070] Figure 26 is a schematic diagram of an electronic device according to an embodiment of this application;

[0071] Figure 27 is a schematic diagram of an electronic device according to an embodiment of this application;

[0072] Figure 28 is a second circuit diagram of an electronic device according to an embodiment of this application;

[0073] Figure 29 is a schematic diagram of an electronic device according to an embodiment of this application;

[0074] Figure 30 is a schematic diagram of an electronic device according to an embodiment of this application;

[0075] Figure 31 is a third circuit diagram of an electronic device according to an embodiment of this application;

[0076] Figure 32 shows the LC filter network;

[0077] Figure 33 is the second flowchart of the IC switching control. Detailed Implementation

[0078] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0079] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0080] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0081] A common top-mounted cellular antenna design employs a dual-slot antenna operating in two modes. The isolation ground near the center of the top bezel, separating it from the left-side antenna, needs to be relatively wide, typically at least 5mm. To ensure isolation from the antenna below, the antenna return point width must also be at least 5mm. However, even with isolation ground and antenna return points exceeding 5mm, it's difficult to completely eliminate interference with other antennas, leading to a degradation in the performance of multiple antennas. Furthermore, this design only allows operation in two modes, significantly limiting antenna performance improvements.

[0082] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0083] As shown in Figure 1, an electronic device according to an embodiment of this application includes:

[0084] A first antenna A1, a second antenna A2, and a third antenna A3 are located on the main structure 100, and a first interval SL1 is provided between the first antenna A1 and the second antenna A2, and a second interval SL2 is provided between the second antenna A2 and the third antenna A3.

[0085] The first antenna A1 is connected to a first feed source F1 at the end near the second antenna A2, and a first switch SW4 is provided between the first antenna A1 and the first feed source F1; the second antenna A2 is connected to a second feed source F2 at the end near the third antenna A3; the third antenna A3 is connected to a third feed source F3 at the end near the second antenna A2, and a second switch SW1 is provided between the third antenna A3 and the third feed source F3; a first tuning circuit M1 and a second tuning circuit M2 are respectively connected to the two sides of the return point G0 of the second antenna A2.

[0086] In this way, the first feed source F1 can be used as a feed source for a cellular antenna (such as a cellular middle high band (MHB) antenna), with the first antenna A1 serving as the radiating body of the cellular antenna and the first tuning circuit M1 serving as the parasitic loading position of the cellular MHB antenna; the second feed source F2 can be used as a feed source for a wireless network antenna (such as a WIFI 5G+N78 antenna); the third feed source F3 can be used as a feed source for a Global Positioning System (GPS) + wireless network antenna (such as a GPS L1 + WIFI 2.4G antenna), with the third antenna A3 serving as the radiating body of the GPS + wireless network antenna and the second tuning circuit M2 serving as the loading position of the two antennas on the left side of the return point G0; the second antenna A2 is the T-stub part shared by the antennas on both sides of the return point G0. In this way, more antenna modes can be realized in a limited space, improving antenna performance.

[0087] Optionally, the width of the return point G0 is 0.5 to 2 mm.

[0088] Of course, the return point G1 of the first antenna A1 is set at the end of the first antenna A1 that is far away from the second antenna A2, and the return point G2 of the third antenna A3 is set at the end of the third antenna A3 that is far away from the second antenna A2.

[0089] In this embodiment, "close to" can be understood as "adjacent," meaning the distance interval is less than a specific threshold. For example, if the first antenna A1 is connected to a first feed source F1 near the end of the second antenna A2, it can be understood that the distance from the connection point of F1 and A1 to SL1 is less than a first value. In this case, the connection point of F1 and A1 is closer to A2 than the connection point of G1. If the second antenna A2 is connected to a second feed source F2 near the end of the third antenna A3, it can be understood that the distance from the connection point of F2 and A2 to SL2 is less than a second value. In this case, the connection point of F2 and A2 is closer to A3 than the connection point of M2 and A2. If the third antenna A3 is connected to a third feed source F3 near the end of the second antenna A2, it can be understood that the distance from the connection point of F3 and A3 to SL2 is less than a third value. In this case, the connection point of F3 and A3 is closer to SL2 than the connection point of G2.

[0090] Optionally, in this embodiment, the third antenna A3 is also connected to a first capacitor C0, and the first position on the third antenna A3 is located on the side of the second position away from the second interval SL2;

[0091] Wherein, the first position is the connection position between the third antenna A3 and the first capacitor C0, and the second position is the connection position between the third antenna A3 and the third feed source F3.

[0092] Here, return point G3 is the return point of the N78 band of the WIFI 5G+N78 antenna.

[0093] Optionally, as shown in FIG2, the first tuning circuit M1 includes a third switch SW3 and a first parallel path group SH4.

[0094] The first terminal of the first parallel path group SH4 is grounded, the second terminal of the first parallel path group SH4 is connected to the first terminal of the third switch SW3, and the second terminal of the third switch SW3 is connected to the second antenna A2.

[0095] Here, the third switch SW3 can adjust the resonant length.

[0096] Optionally, the second tuning circuit M2 includes a fourth switch SW2 and a second parallel path group SH3;

[0097] The first terminal of the second parallel path group SH3 is grounded, the second terminal of the second parallel path group SH3 is connected to the first terminal of the fourth switch SW2, and the second terminal of the fourth switch SW2 is connected to the second antenna A2.

[0098] Here, the fourth switch SW2 can adjust the resonant length.

[0099] Optionally, a third matching network P3 is provided between the second feed source F2 and the second antenna A2.

[0100] Optionally, the first terminal of the first switch SW4 is connected to the first feed source F1;

[0101] The second terminal of the first switch SW4 is connected to the first terminal of the third parallel path group SH2, and the second terminal of the third parallel path group SH2 is grounded;

[0102] The third terminal of the first switch SW4 is connected to the first terminal of the first series path group SE2, and the second terminal of the first series path group SE2 is connected to the first antenna A1.

[0103] The second end of the first series path group SE2 is also connected to the first end of the second matching network P2, and the second end of the second matching network P2 is connected to the first feed source F1.

[0104] Here, the first switch SW4 can be used for impedance matching.

[0105] Optionally, the first terminal of the second switch SW1 is connected to the third antenna A3;

[0106] The second terminal of the second switch SW1 is connected to the first terminal of the fourth parallel path group SH1, and the second terminal of the fourth parallel path group SH1 is grounded;

[0107] The third terminal of the second switch SW1 is connected to the first terminal of the second series path group SE1, and the second terminal of the second series path group SE1 is connected to the third feed source F3.

[0108] Among them, a first matching network P1 is also provided between the second switch SW1 and the third antenna A3. The first end of the second switch SW1 is also connected to the first end of the seventh matching network P7, and the second end of the seventh matching network P7 is connected to the third feed source F3.

[0109] Here, the second switch SW1 can be used for impedance matching.

[0110] Optionally, the first matching network P1 is connected to the third antenna A3 and the first terminal of the second capacitor C01, and the second terminal of the second capacitor C01 is grounded.

[0111] Optionally, the capacitance value of the first capacitor C0 is greater than that of the second capacitor C01.

[0112] As an optional implementation, Figures 3 and 4 illustrate the operating modes of a cellular MHB antenna. The right-side structure of G0 effectively excites the common-mode current I11 and differential-mode current I12 of the slot antenna. Using the first gap SL1 to couple energy to the top T stub (second antenna A2), the common-mode current I14 and differential-mode current I13 of the T antenna can be effectively excited. This means that four operating modes can be generated for the same frequency band, significantly improving the antenna's radiation aperture and efficiency. Switches are placed at the first feed F1 and the first tuning circuit M1, allowing for four-mode operation across different frequency bands. Here, it is necessary to ensure that the differential-mode current I12 of the slot antenna is at a slightly higher frequency within the operating band, the common-mode current I14 of the T antenna is at a slightly lower frequency, and the common-mode current I11 of the slot antenna and the differential-mode current I13 of the T antenna are completely within the operating band. This maximizes the aperture of the superimposed currents in the same direction, thereby maximizing radiation efficiency.

[0113] As an optional implementation, Figures 5, 6, and 7 illustrate the operating modes of GPS L1 + WIFI 2.4G antenna and WIFI 5G + N78 antenna. In this configuration, current IG1 represents the IFA mode of the GPS L1's main body, a quarter wavelength. Through coupling via the second spacing SL2, it effectively excites the common-mode current IG3 and differential-mode current IG2 of the top T antenna, ensuring at least three modes operate within the GPS L1 frequency band. By adjusting the second tuning circuit M2, the common-mode current IG3 of the T antenna is positioned slightly below the operating frequency band, ensuring the differential-mode current IG2 of the T antenna and the inverted-F antenna (IFA) mode are within the operating frequency band. This maximizes the aperture of the superimposed currents in the same direction, thereby maximizing radiation efficiency. In Figure 7, current IGW1 is the common-mode current of the slot antenna coupled from the left antenna body of WIFI 2.4G to the parasitic return current at M2, and IGW2 is the differential-mode current of the slot antenna. Placing IGW2 at a frequency slightly higher than the WIFI 2.4G frequency band allows WIFI 2.4G to obtain a better unidirectional current aperture to improve radiation efficiency. It should be noted that in order to excite the slot antenna mode of WIFI 2.4G, a low-impedance load needs to be used at the M2 position. Combined with the return point G0, a fairly wide isolation ground is created from M2 to G0 for WIFI 2.4G, making it impossible to effectively excite the T antenna mode. For the WIFI 5G+N78 antenna, a small parallel capacitor (such as a second capacitor C01) needs to be used near the first matching point of the antenna at the third feed F3, so that WIFI 5G returns to ground at this point, exciting the slot common-mode current IW5 from the second feed F2 to this small return capacitor. By adjusting the first capacitor C0, it forms a ground loop to N78, exciting the slot common-mode current IW8 operating in the N78 frequency band from the second feed source F2 to the first capacitor C0. Simultaneously, the first capacitor C0 also plays a role in aperture tuning for GPS L1 and WIFI 2.4G.

[0114] Optionally, as shown in FIG8, the electronic device further includes:

[0115] The control circuit 200 is connected to the first switch SW4, the second switch SW1, the third switch SW3 of the first tuning circuit M1, and the fourth switch SW2 of the second tuning circuit M2, respectively.

[0116] The control circuit 200 controls the working states of the first switch SW4, the second switch SW1, the third switch SW3, and the fourth switch SW2 respectively through control signals.

[0117] Thus, the electronic device of this application embodiment can control the working states of the first switch SW4, the second switch SW1, the third switch SW3 and the fourth switch SW2 respectively via the control signal of the control circuit 200, thereby realizing different antenna modes.

[0118] Optionally, the control circuit is an integrated circuit (IC).

[0119] Optionally, the control signal is determined based on the operating status of each antenna in the electronic device.

[0120] Here, the operating status of each antenna refers to its current operating status or the operating status determined based on user requirements. For example, the control circuit can respond to a trigger signal, acquire the operating status of each antenna, and generate control signals to control the operating status of the four switches. Specifically, as shown in Figure 9, the IC starts working in response to the trigger signal. First, it acquires the cellular operating status, determines whether the cellular is working, then acquires the GPS L1 operating status, determines whether GPS L1 is working, and then acquires the WIFI 2.4G operating status, determining whether it is working. Ultimately, eight operating scenarios can be formed. Then, the operating status of the first switch SW4, the second switch SW1, the third switch SW3, and the fourth switch SW2 are controlled according to these eight scenarios to obtain the configuration status of each switch, as shown in Table 1 below:

[0121] Table 1

[0122] The following explanation, based on cellular band B3, GPS L1, and WIFI 2.4G, illustrates the different states of the four switches in scenarios 1 / 2 / 3 / 4:

[0123] Scenario 1: GPS L1 is working, WIFI 2.4G and cellular are not working. SW1's state1_1 allows the second series path group SE1 and the fourth parallel path group SH1 to work simultaneously, achieving optimal impedance for GPS L1 through a parallel inductor-series capacitor tuning method. One purpose of the second series path group SE1 is to short-circuit the first matching network P1, preventing it from participating in impedance matching. SW2's state2_1 allows the second parallel path group SH3 (to ground mode group) to pass an inductor, loading the common mode of the T antenna to a position lower than GPS L1. SW3's state3_1, i.e., SW3 is in a high-impedance state, maintaining state B3. SW4 operates through the first series path group SE2, and through tuning, the resonant impedance of the first antenna A1 is made much higher than that of GPS L1. This achieves multi-mode coverage when GPS L1 is working alone, and also significantly increases its impedance bandwidth through multi-mode coverage, making the impedance more convergent, and greatly reducing matching loss and reflection loss.

[0124] Scenario 2: GPS L1 is not working, WIFI 2.4G is working, and cellular is not working. SW1's state1_2 allows the second series path group SE1 to pass through to 0 ohms. In this case, the feeder does not require other matching devices, and the mode resonance can directly meet the low reflection loss requirement, significantly reducing the loss of matching devices. One purpose of the second series path group SE1 is to short-circuit the first matching network P1 in the feeder, preventing it from participating in impedance matching. SW2's state2_2 allows the second parallel path group SH3 to pass through a large capacitor, a small inductor, or 0 ohms (the specific choice depends on the length of the second interval SL2 to G0), ensuring that the WIFI 2.4G slot differential mode resonance is in the operating frequency band. SW3's state3_2, the state of the first parallel path group SH4 (to ground mode) does not require special settings. SW4 operates through the first series path group SE2; tuning is sufficient to ensure that the resonant impedance of the first antenna A1 is lower than that of WIFI 2.4G. This enables slot mode coverage when WIFI 2.4G is working alone. By optimizing the loading of surrounding antennas, the impedance convergence of slot mode is greatly improved, resulting in a significant reduction in both matching loss and reflection loss.

[0125] Scenario 3: GPS L1 and WIFI 2.4G are not working, but the cellular network is. SW1's state 1_3 allows the fourth parallel path group SH1 to reach 0 ohms to ground, eliminating the severe impact of the second antenna A2's resonance on B3. SW2's state 2_3, where SW2 is in a high-impedance state, can be turned off, with either a small capacitor or a large inductor (the specific choice depends on the length of the second interval SL2 to G0), causing the T antenna's common-mode load to be lower than that of B3. SW3's state 3_3, where SW3 is in a high-impedance state, can be turned off, with either a small capacitor or a large inductor (the specific choice depends on the length of the first interval SL1 to G0), causing the slot antenna's differential mode to be slightly higher than the operating frequency band of B3. SW4's state 4_2, through the simultaneous action of the first series path group SE2 and the third parallel path group SH2, adjusts the feed path impedance, ensuring good impedance matching for B3. This achieves four-mode operation: slot common-mode / differential-mode and T parasitic common-mode / differential-mode, when B3 operates alone. In addition to improving radiation efficiency, it also increases impedance bandwidth, making the input impedance more convergent and significantly reducing matching loss and reflection loss. Other cellular frequency bands can be configured with separate switches.

[0126] Scenario 4: GPS L1, WIFI 2.4G, and cellular operate simultaneously. SW1's state 1_4 can be configured to be off, achieving simultaneous impedance matching for GPS L1 and WIFI 2.4G through the first matching network P1 in the feed path. SW2's state 2_4 uses a large capacitor from SH3 to ground to ensure the slot differential mode falls near WIFI 2.4G, guaranteeing its slot operation mode. At this time, GPS L1 operates in its quarter-wavelength mode, while the slot differential mode has a relatively small effect on GPS L1 and cannot achieve T-parasitic operation. SW3's state 3_3, where SW3 is in a high-impedance state, can be off, use a small capacitor, or a large inductor (the specific choice depends on the length of the first interval SL1 to G0), making the slot antenna's differential mode slightly higher than B3's operating frequency band. SW4's state 4_2 adjusts the feed path impedance through the simultaneous action of the first series path group SE2 and the third parallel path group SH2, ensuring good impedance matching for B3. This allows B3 to operate in a mixed-mode configuration of slot common-mode and differential-mode. Compared to the single-mode configuration, the performance of each antenna will decrease.

[0127] Furthermore, as shown in Figure 1, the performance comparison of the electronic device of this application embodiment and the electronic device with a conventional antenna in the B3 band is shown in Figures 10 and 11. In Figure 10, it can be clearly seen that the electronic device of this application embodiment has an improvement of about 1dB in both aperture radiation efficiency and total efficiency. The actual improvement is related to the environment in which the antenna is located. In Figure 11, it can be clearly seen that the electronic device of this application embodiment has more resonant modes and a wider impedance bandwidth. As shown in Figure 1, the performance comparison of the electronic device of this application embodiment in B3 single-state and coexistence state (i.e., the performance comparison of scenarios 3 and 4) is shown in Figures 12 and 13. In Figure 12, it can be clearly seen that the single-state B3 radiation efficiency and total efficiency are about 1dB higher than those in the coexistence state. The actual improvement is related to the environment in which the antenna is located. In Figure 13, it can be clearly seen that the single-state has more resonant modes and a wider impedance bandwidth than the coexistence state. As shown in Figure 1, the performance comparison of the GPS L1 single-state and coexistence states of the electronic device according to this application embodiment (i.e., the performance comparison of scenarios 1 and 4) is illustrated in Figures 14 and 15. In Figure 14, it is clearly shown that the single-state GPS L1 radiation efficiency and overall efficiency are approximately 2dB higher than the coexistence state. The actual improvement depends on factors such as the antenna's environment. In Figure 15, it is clearly shown that the single-state has more resonant modes and a wider impedance bandwidth than the coexistence state. The benefits of GPS L1 are very high, which can greatly improve the user's positioning and navigation experience. As shown in Figure 1, the performance comparison of the GPS L1 WIFI 2.4G single-state and coexistence states of the electronic device according to this application embodiment (i.e., the performance comparison of scenarios 2 and 4) is illustrated in Figures 16 and 17. In Figure 16, it is clearly shown that the single-state WIFI 2.4G overall efficiency is nearly 1dB higher than the coexistence state. The actual improvement depends on factors such as the antenna's environment. In Figure 17, it is clearly shown that the single-state has a wider impedance bandwidth than the coexistence state.

[0128] Furthermore, Figures 18 and 19 show the current modes of the cellular B3 band in coexistence mode (Scenario 4), with the same-direction current being the common-mode of the slot antenna and the reverse current being the differential-mode of the slot antenna. Figures 20 and 21 show the newly added current modes of the cellular B3 band in single-mode mode (Scenario 3), with the same-direction current being the differential-mode of the T antenna and the reverse current being the common-mode of the T antenna. Figure 22 shows the current modes of GPS L1 in coexistence mode (Scenario 4), which is the quarter-resonant mode of the main IFA. Figures 23 and 24 show the newly added current modes of GPS L1 in single-mode mode (Scenario 1), with the same-direction current being the differential-mode of the T antenna and the reverse current being the common-mode of the T antenna. Figure 25 shows the current modes of WIFI 2.4G in single-mode (Scenario 2) and coexistence mode (Scenario 4). It can be seen that the current distributions of B3 and GPS L1 in coexistence mode are located in the right region of G0 and the left region of G0, respectively, with no overlapping areas and minimal mutual influence. When B3 and GPS L1 are in single-state, the currents overlap significantly in the T-stub region and have a large mutual influence. In this case, the control of the aforementioned communication IC is required to achieve their respective optimal current modes in different scenarios.

[0129] Optionally, as shown in Figures 26 and 27, in the electronic device of this application embodiment, the main structure 100 is further provided with a third interval SL3 and a fourth interval SL4. The third interval SL3 is located on the side of the third antenna A3 away from the second antenna A2, and the fourth interval SL4 is located on the side of the first antenna A1 away from the second antenna A2.

[0130] The third antenna A3 is connected to a third tuning circuit M3 at one end near the third interval SL3; the first antenna A1 is connected to a fourth tuning circuit M4 at one end near the fourth interval SL4.

[0131] Thus, through the third interval SL3 and the fourth interval SL4, and the third tuning circuit M3 and the fourth tuning circuit M4, adjusting M3 and M4 can respectively enable the addition of a T-antenna mode for the left GPS L1+WIFI 2.4G antenna and the right cellular MHB antenna. Specifically, IT11 is the differential-mode current of the added T-antenna in the GPS L1+WIFI 2.4G antenna, and IT12 is the common-mode current of the added T-antenna. Adjusting M3 tunes the common-mode current to slightly below the GPS L1 frequency band, further improving the performance of GPS L1. Simultaneously, since the adjustment of M3 introduces a resonant structure near GPS L1 on the side, it can suppress the downward traveling current of GPS L1 to a certain extent, thereby increasing its upper hemisphere radiation ratio. Specifically, IT21 is the differential-mode current of the added T-antenna in the cellular MHB antenna, and IT22 is the common-mode current of the added T-antenna. Adjusting M4 tunes the common-mode current to slightly below the B3 frequency band, further improving the performance of B3.

[0132] Optionally, as shown in FIG28, the third tuning circuit M3 includes a fifth switch SW7 and a fifth parallel path group SH7;

[0133] The first terminal of the fifth parallel path group SH7 is grounded, the second terminal of the fifth parallel path group SH7 is connected to the first terminal of the fifth switch SW7, and the second terminal of the fifth switch SW7 is connected to the third antenna A3.

[0134] Of course, the third tuning circuit M3 can also be implemented using other devices.

[0135] Optionally, as shown in FIG28, the fourth tuning circuit M4 includes a sixth switch SW8 and a sixth parallel path group SH8;

[0136] The first terminal of the sixth parallel path group SH8 is grounded, the second terminal of the sixth parallel path group SH8 is connected to the first terminal of the sixth switch SW8, and the second terminal of the sixth switch SW8 is connected to the first antenna A1.

[0137] That is, a switch can be designed at the M4 position to tune the T-antenna mode of the main body, thereby enabling the addition of T-antenna modes for multiple frequency bands and improving antenna efficiency.

[0138] Optionally, in this embodiment, the control circuit 200 is also connected to the fifth switch SW7 of the third tuning circuit M3 and the sixth switch SW8 of the fourth tuning circuit M4.

[0139] The control circuit 200 controls the working states of the fifth switch SW7 and the sixth switch SW8 respectively through the control signal.

[0140] Thus, the electronic device in this application embodiment can also control the working state of the fifth switch SW7 and the sixth switch SW8 via the control signal of the control circuit, thereby realizing different antenna modes.

[0141] Optionally, as shown in Figures 29 and 30, the main structure 100 further includes a fourth antenna A4 and a fifth antenna A5, with a fourth interval SL4 between the fourth antenna A4 and the first antenna A1, and a fifth interval SL5 between the fourth antenna A4 and the fifth antenna A5.

[0142] Specifically, the first antenna A1 is connected to a fourth feed source F4 and a fifth feed source F5 at one end near the fourth antenna A4; the fourth antenna A4 is connected to a sixth feed source F6 at one end near the fifth antenna A5, and a seventh switch SW5 is provided between the fourth antenna A4 and the sixth feed source F6; the fifth antenna A5 is connected to a seventh feed source F7 at one end near the fourth antenna A4, and an eighth switch SW6 is provided between the fifth antenna A5 and the seventh feed source F7.

[0143] Thus, the fourth interval SL4 and the fifth interval SL5, the fourth antenna A4 and the fifth antenna A5, and the sixth antenna A6 (from G1 to SL4) are the newly added antenna radiators. The fourth feed source F4 feeds the GPS L5 antenna, the fifth feed source F5 feeds the N78+N79 antenna, the sixth feed source F6 feeds the MHB+N78+N79 antenna, and the seventh feed source F7 feeds the LB antenna.

[0144] Optionally, as shown in FIG31, the first end of the seventh switch SW5 is connected to the sixth feed source F6;

[0145] The second terminal of the seventh switch SW5 is connected to the first terminal of the seventh parallel path group SH5, and the second terminal of the seventh parallel path group SH5 is grounded.

[0146] The third terminal of the seventh switch SW5 is connected to the first terminal of the third series path group SE5, and the second terminal of the third series path group SE5 is connected to the fourth antenna A4.

[0147] Optionally, the first end of the eighth switch SW6 is connected to the seventh feed source F7;

[0148] The second terminal of the eighth switch SW6 is connected to the first terminal of the eighth parallel path group SH6, and the second terminal of the eighth parallel path group SH6 is grounded.

[0149] The third terminal of the eighth switch SW6 is connected to the first terminal of the fourth series path group SE6, and the second terminal of the fourth series path group SE6 is connected to the fifth antenna A5.

[0150] Optionally, as shown in Figure 31, the length of the sixth antenna A6 is shorter than one-quarter of the resonant length of GPS L5. This allows its initial impedance to be positioned in the first quadrant of the Smith chart, enabling a matching configuration of a third capacitor C101 in parallel and a first inductor L101 in series. C101 also serves as the return-to-ground capacitor for N78 and N79 fed from F5, preventing excessively long return-to-ground paths from N78 and N79 via G1, which could introduce higher-order modes and reduce their radiation efficiency. L101, being a relatively large inductor (typically greater than 1nH), effectively ensures good isolation between the F4 and F5 ports in the high-frequency range.

[0151] Besides the essential C101 and L101, other matching devices can be added to the F4 path as needed. GPSL5 operates at a quarter-wavelength resonance from G1 to SL4. For the F5 path matching, an LC filter circuit should be connected in series near the A6 radiator. This circuit consists of a fourth capacitor C102 connected in parallel with a second inductor L102. Its resonance is near GPS L5, effectively blocking the energy of GPS L5 and ensuring isolation between the F4 and F5 ports near GPS L5. Furthermore, a fifth capacitor C103 and a third inductor L103 should be connected in parallel between the LC and the RF front-end on the F5 feed line for impedance matching of N78 and N79. Other matching devices can also be added to the F5 path as needed. A sixth ground-loaded capacitor C104 is placed near SL4 on radiator A4. This capacitor acts as a parasitic return-to-ground capacitor for the N78 and N79 frequency bands fed by F5, enabling differential mode in high-frequency slots. Adjusting the sixth capacitor C104 to tune this differential mode to a frequency slightly higher than N79 can effectively improve the aperture radiation efficiency of N78 and N79. Here, N78 operates in slot common mode from C101 to C104, and N79 operates in slot common mode from the F5 feed to C104. A seventh switch SW5 is designed on feed F6, where the third series path group SE5 is the series tuning module of the seventh switch SW5, the seventh parallel path group SH5 is the parallel tuning module of the seventh switch SW5, and the fifth matching network P5 contains other matching device modules on this path. The F7 feed line features an eighth switch SW6, where the fourth series path group SE6 is the series tuning module of this switch, the eighth parallel path group SH6 is the parallel tuning module of this switch, and the sixth matching network P6 contains other matching device modules on this path. For N78 and N79 fed into F6, the parallel-to-ground module of SW6 needs to be adjusted so that the electrical length from SL5 to SH6 for N78 and N79 is near one-quarter of the wavelength of N78 and N79. This effectively couples energy to the A5 radiator, exciting the slot common-mode and differential-mode from F6 to SH6, and the loop mode from F7 to G4. Because of this design, more energy from N78 and N79 is drawn to the A5 radiator, resulting in very little energy flowing to C104. Therefore, it does not share a ground connection with the N78 and N79 fed into F5 at C104, ensuring excellent isolation between the N78 and N79 of these two antennas. The MHB frequency band fed in at F6 can achieve three-mode operation by adjusting the SH6 module. The first is the common mode IHU1 slot from F6 to the SH6 module, the second is the differential mode slot from F6 to SH6 (current reversed, frequency set slightly higher than the operating frequency band by adjusting SH6), and the third is the loaded monopole mode from F6 to SL4 (this mode is not present in conventional designs). C104 plays the role of aperture loading for this monopole mode.The introduction of G1, C101, C102, and C103 ensures good isolation between the MHB bands of F1 and F6. Furthermore, depending on the situation, a single C104 may not be sufficient to properly adjust the modes required for multiple bands (N78 and N79 fed from F5 require large capacitors for grounding and mode adjustment, while MHB fed from F6 requires smaller capacitors or larger inductors). In such cases, C104 can be replaced with an LC filter network consisting of a capacitor and an inductor in parallel, as shown in Figure 32. By adjusting the capacitor and inductor values, it can be equivalent to a smaller capacitor or a larger inductor at lower frequencies (only serving as a load for the MHB band fed from F6), and equivalent to a larger capacitor at higher frequencies (achieving better grounding for N78 and N79 fed from F5). Additionally, a direct grounding or capacitor / inductor grounding point can be added near the middle of the A4 stub to excite the T-antenna mode of the MHB, increasing its operating mode to achieve better radiation efficiency and impedance bandwidth.

[0152] Optionally, as shown in FIG8, the control circuit 200 is also connected to the seventh switch SW5 and the eighth switch SW6;

[0153] The control circuit 200 controls the working states of the seventh switch SW5 and the eighth switch SW6 respectively through the control signal.

[0154] Thus, the electronic device in this application embodiment can also control the working states of the seventh switch SW5 and the eighth switch SW6 respectively via the control signal of the control circuit, thereby realizing different antenna modes.

[0155] It should be noted that, as shown in Figure 30, in the electronic device of this embodiment, the GPS L5 is positioned at the top corner of the side, which causes a strong downlink current to be generated on the side, resulting in the GPS L5 radiating downwards. To change this downward radiation and increase its upper hemisphere radiation ratio, a communication IC can be used to control SW5 and SW6, configuring different switching states in different scenarios. When GPS L5 is prioritized, adjusting the parallel module SH5 of SW5 to connect a parallel capacitor to ground causes the A4 stub to resonate near L5, effectively suppressing the downlink current of L5. Alternatively, adjusting the parallel module SH6 of SW6 to connect a long parallel inductor to ground causes the A5 stub to resonate near L5, effectively suppressing the downlink current of L5 in a secondary manner. This significantly improves the upper hemisphere radiation ratio of L5.

[0156] Specifically, as shown in Figure 33, the IC controls the side antenna switch by determining the current working scenario. Switch configuration states 1-8 represent different switch configuration states for different scenarios and may differ from those in Figure 9. When a trigger signal is input to the communication IC, it begins operation. First, it acquires the cellular operating status to determine if the cellular is operating at a low frequency. Then, it continues to acquire the cellular operating status to determine if the cellular is operating at a mid-to-high frequency. Finally, it acquires the GPS L5 operating status to determine if GPS L5 is working. This results in eight scenarios. For each of these eight scenarios, the operating status of the seventh switch SW5 and the eighth switch SW6 can be configured, resulting in the switch configuration states shown in Table 2 below.

[0157] Table 2

[0158] The following explains the different states of the two switches based on cellular low-frequency band, GPS L5, and cellular mid-to-high frequency band, combined with scenarios 1 / 2 / 3 / 4:

[0159] Scenario 1: GPS L5 is active, while cellular low-frequency and mid-to-high-frequency frequencies are inactive. SW 5's state 1_1 suppresses L5 downlink waves by connecting SH5 to ground capacitance and applying the resonance of A4 downwards to the vicinity of GPS L5. SW 6's state 2_1 suppresses L5 downlink waves by connecting SH6 to ground inductance and applying the resonance of A5 upwards to the vicinity of GPS L5. In this scenario, L5 downlink waves can be effectively suppressed twice, significantly increasing its upper hemisphere radiation ratio.

[0160] Scenario 2: GPS L5 is active, cellular low-frequency is active, and cellular mid-to-high-frequency is inactive. SW 5's state 1_1 suppresses L5 downlink waves by setting the SH5-to-ground capacitance to apply the A4 resonance downwards near GPS L5. SW 6's state 2_2 adjusts SE6 and SH6 to ensure A5 resonance is at a low frequency. In this scenario, the suppression of L5 downlink waves is a unipolar suppression of the A4 stub, which can increase the upper hemisphere radiation ratio of L5.

[0161] Scenario 3: GPS L5 is operating, the low-frequency cellular component is operating, and the mid-to-high frequency cellular component is operating. SW5's state 1_2 adjusts SE5 and SH5 to ensure A4 resonance is in the mid-to-high frequency range. SW6's state 2_1 sets SH6 to ground inductor, applying the A5 resonance upwards to the vicinity of GPS L5 to suppress L5 downlink waves. In this scenario, the suppression of L5 downlink waves is a unipolar suppression of the A5 stub, which can increase the upper hemisphere radiation ratio of L5.

[0162] Scenario 4: GPS L5 is operating, with cellular low-frequency and mid-to-high-frequency operation. SW5's state1_3 adjusts each path to ensure A4 operates in various mid-to-high frequency bands. SW6's state2_3 adjusts each path to ensure A5 operates in various low-frequency bands. In this scenario, the upper hemisphere radiation ratio of GPS L5 will be slightly lower. Alternatively, the two switches can be tuned in this scenario to reduce the cellular band performance of A4 and A5 to some extent, while simultaneously generating resonance near GPS L5 to suppress downlink traveling waves and improve its upper hemisphere radiation ratio.

[0163] It should be noted that Figures 1, 3-7, 26-27, and 29-30 are rear views of electronic devices, and the black border is made of metal, die-cast aluminum alloy, LDS, FPC, or other metal materials. The manufacturing process for this black border can include various methods such as Computer Numerical Control (CNC), metal die casting, Flexible Printed Circuit (FPC), and Laser-Direct-Structuring (LDS).

[0164] It should be noted that, in the embodiments of this application, the series path group can be composed of multiple parallel branches, such as the first series path group SE2 in Figure 2. Not all parallel branches are shown in the figure; they are represented by ellipses. Each series path group, as a whole, forms a series path with the corresponding connected device. For example, the first series path group SE2 can be connected in series with SW4, A1, and F1 to form a series path. The parallel path group can also be composed of multiple parallel branches, such as the third parallel path group SH2 in Figure 2. Not all parallel branches are shown in the figure; they are represented by ellipses. Since the parallel branches of each parallel path group are grounded, each parallel path group can form a parallel path through multiple parallel branches.

[0165] In summary, the electronic device of this application embodiment has the following advantages:

[0166] 1. Both cellular antennas and GPS / WIFI antennas can effectively utilize the common-mode / differential-mode of slot antennas and the common-mode / differential-mode of T antennas to achieve four-mode coverage antennas, resulting in a significant improvement in antenna performance.

[0167] 2. Antenna switches SW1-SW8 enable integrated hardware and software operation, controlling the antenna in conjunction with the communication IC. This allows for optimal operation or coexistence of cellular, GPS, and Wi-Fi antennas in different scenarios by adjusting the switch states, effectively resolving the issue of mutual interference between antennas. This segmented and optimized user experience caters to diverse needs across various scenarios.

[0168] 3. By controlling the antenna through the communication IC and adjusting the switching of the cellular antenna, multi-level suppression of downlink traveling waves of the GPS L5 antenna can be achieved, which can effectively improve the upper hemisphere radiation ratio of GPS L5 and enhance the user experience.

[0169] 4. Based on the first point, the antenna body mode is further optimized. A second T antenna mode is introduced on the basis of the body slot mode, so that the antenna can achieve mode coverage from five modes to six modes.

[0170] In the embodiments of this application, the electronic device can be a terminal, or it can be any other device besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. The embodiments of this application do not specifically limit the scope.

[0171] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0172] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation, and therefore should not be construed as a limitation of this application.

[0173] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0174] The above embodiments are described with reference to the accompanying drawings. Other different forms and embodiments are also feasible without departing from the principles of this application. Therefore, this application should not be construed as limiting the embodiments set forth herein. Rather, these embodiments are provided to make this application complete and perfect, and to convey the scope of this application to those skilled in the art. In the drawings, component dimensions and relative dimensions may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms “comprising” and / or “including”, when used in this specification, indicate the presence of said features, integers, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, elements, components, and / or groups thereof. Unless otherwise shown, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.

[0175] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, comprising: The first antenna, the second antenna, and the third antenna are located on the main structure, with a first gap between the first antenna and the second antenna, and a second gap between the second antenna and the third antenna; The first antenna is connected to a first feed source at one end near the second antenna, and a first switch is provided between the first antenna and the first feed source; the second antenna is connected to a second feed source at one end near the third antenna; the third antenna is connected to a third feed source at one end near the second antenna, and a second switch is provided between the third antenna and the third feed source; a first tuning circuit and a second tuning circuit are respectively connected to the two sides of the return point of the second antenna.

2. The electronic device according to claim 1, wherein, The first tuning circuit includes a third switch and a first parallel path group; The first end of the first parallel path group is grounded, the second end of the first parallel path group is connected to the first end of the third switch, and the second end of the third switch is connected to the second antenna.

3. The electronic device according to claim 1, wherein, The second tuning circuit includes a fourth switch and a second parallel path group; The first end of the second parallel path group is grounded, the second end of the second parallel path group is connected to the first end of the fourth switch, and the second end of the fourth switch is connected to the second antenna.

4. The electronic device according to claim 1, wherein, The first terminal of the first switch is connected to the first feed source; The second terminal of the first switch is connected to the first terminal of the third parallel path group, and the second terminal of the third parallel path group is grounded; The third terminal of the first switch is connected to the first terminal of the first series path group, and the second terminal of the first series path group is connected to the first antenna.

5. The electronic device according to claim 1, wherein, The first terminal of the second switch is connected to the third antenna; The second terminal of the second switch is connected to the first terminal of the fourth parallel path group, and the second terminal of the fourth parallel path group is grounded; The third terminal of the second switch is connected to the first terminal of the second series path group, and the second terminal of the second series path group is connected to the third feed source.

6. The electronic device according to claim 1, wherein, The third antenna is also connected to the first capacitor, and the first position on the third antenna is located on the side of the second position away from the second interval; Wherein, the first position is the connection position between the third antenna and the first capacitor, and the second position is the connection position between the third antenna and the third feed source.

7. The electronic device according to claim 1, further comprising: A control circuit, which is connected to the first switch, the second switch, the third switch of the first tuning circuit, and the fourth switch of the second tuning circuit, respectively. The control circuit controls the operating states of the first switch, the second switch, the third switch, and the fourth switch respectively through control signals.

8. The electronic device according to claim 7, wherein, The main structure is also provided with a third interval and a fourth interval. The third interval is located on the side of the third antenna away from the second antenna, and the fourth interval is located on the side of the first antenna away from the second antenna. The third antenna is connected to a third tuning circuit at one end near the third interval; the first antenna is connected to a fourth tuning circuit at one end near the fourth interval.

9. The electronic device according to claim 8, wherein, The third tuning circuit includes a fifth switch and a fifth parallel path group; The first end of the fifth parallel path group is grounded, the second end of the fifth parallel path group is connected to the first end of the fifth switch, and the second end of the fifth switch is connected to the third antenna.

10. The electronic device according to claim 8, wherein, The fourth tuning circuit includes a sixth switch and a sixth parallel path group; The first end of the sixth parallel path group is grounded, the second end of the sixth parallel path group is connected to the first end of the sixth switch, and the second end of the sixth switch is connected to the first antenna.

11. The electronic device according to claim 8, wherein, The control circuit is also connected to the fifth switch of the third tuning circuit and the sixth switch of the fourth tuning circuit. The control circuit controls the operating states of the fifth switch and the sixth switch respectively through the control signal.

12. The electronic device according to claim 11, wherein, The main structure also includes a fourth antenna and a fifth antenna, with a fourth gap between the fourth antenna and the first antenna, and a fifth gap between the fourth antenna and the fifth antenna; The first antenna is connected to a fourth feed source and a fifth feed source at the end closest to the fourth antenna; the fourth antenna is connected to a sixth feed source at the end closest to the fifth antenna, and a seventh switch is provided between the fourth antenna and the sixth feed source; the fifth antenna is connected to a seventh feed source at the end closest to the fourth antenna, and an eighth switch is provided between the fifth antenna and the seventh feed source.

13. The electronic device according to claim 12, wherein, The first end of the seventh switch is connected to the sixth feed source; The second terminal of the seventh switch is connected to the first terminal of the seventh parallel circuit group, and the second terminal of the seventh parallel circuit group is grounded. The third terminal of the seventh switch is connected to the first terminal of the third series path group, and the second terminal of the third series path group is connected to the fourth antenna.

14. The electronic device according to claim 12, wherein, The first end of the eighth switch is connected to the seventh feed source; The second terminal of the eighth switch is connected to the first terminal of the eighth parallel path group, and the second terminal of the eighth parallel path group is grounded. The third terminal of the eighth switch is connected to the first terminal of the fourth series path group, and the second terminal of the fourth series path group is connected to the fifth antenna.

15. The electronic device according to claim 12, wherein, The control circuit is also connected to the seventh switch and the eighth switch; The control circuit controls the operating states of the seventh switch and the eighth switch respectively through the control signal.

16. The electronic device according to claim 7, 11, or 15, wherein, The control signal is determined based on the operating status of each antenna in the electronic device.

Images