Antenna module and electronic device

Abstract

This application relates to an antenna module and electronic device. The antenna module includes a first antenna and a second antenna. The first antenna includes a first feed and a first radiating stub, and the second antenna includes a second feed and a second radiating stub. When the first antenna needs to operate, the first feed point is connected to the first feed, so that the first feed excites the first radiating stub to operate in the satellite communication frequency band; the second feed point is connected to ground, so that the second antenna is not operational. When the first antenna does not need to operate, the first feed point is connected to ground, and the second feed point is simultaneously connected to the second feed, so that the second feed excites the second radiating stub to operate in the first frequency band. Therefore, the first antenna and the second antenna are designed independently, resulting in low system withstand voltage risk. While maintaining high overall efficiency, it improves the isolation between the satellite antenna and other antennas, reducing interference.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to an antenna module and electronic device. Background Technology

[0002] With the development of satellite technology, satellite communication has become a major focus for mobile terminals. Adding a satellite antenna to a mobile terminal usually involves reusing it with antennas on other frequency bands, which may reduce overall efficiency; or designing a separate satellite antenna may result in coupling with other antennas on the same or similar frequencies, leading to interference and reduced isolation. Summary of the Invention

[0003] This application provides an antenna module and electronic device that can improve the isolation between the satellite antenna and other antennas and reduce interference while maintaining high overall efficiency.

[0004] The first aspect of this application provides an antenna module, comprising:

[0005] The first antenna includes a first feed and a first radiating stub, the first radiating stub having a first free end, a first ground end, and a first feed point located between the first free end and the first ground end;

[0006] The second antenna includes a second feed and a second radiating stub. The second radiating stub has a second free end, a second ground end, and a second feed point located between the second free end and the second ground end. A gap is formed between the second free end and the first free end.

[0007] Specifically, when the first feed point is connected to the first feed source and the second feed point is connected to the ground, the first feed source excites the first radiating stub to operate in a first resonant mode to support the satellite communication frequency band; when the second feed point is connected to the second feed source and the first feed point is connected to the ground, the second feed source excites the second radiating stub to operate in a second resonant mode to support the first frequency band; the first frequency band and the satellite communication frequency band are within a preset frequency range.

[0008] A second aspect of this application provides an electronic device, comprising:

[0009] The middle frame includes a middle plate and a top frame, a first side frame, a bottom frame and a second side frame connected sequentially from end to end around the side of the middle plate. The middle plate is used to provide a ground end.

[0010] As described above, in the antenna module, the first antenna and the second antenna are disposed on the top frame.

[0011] The aforementioned antenna module and electronic equipment include a first antenna and a second antenna. The first antenna includes a first feed and a first radiating stub, while the second antenna includes a second feed and a second radiating stub. When the first antenna needs to operate, the first feed point is connected to the first feed, causing the first feed to excite the first radiating stub to operate in the satellite communication frequency band; the second feed point is connected to ground, causing the second antenna to be inactive. When the first antenna does not need to operate, the first feed point is connected to ground, and simultaneously the second feed point is connected to the second feed, causing the second feed to excite the second radiating stub to operate in the first frequency band. Therefore, the first and second antennas are designed independently, resulting in low system withstand voltage risk. While maintaining high overall efficiency, this design improves the isolation between the satellite antenna and other antennas, reducing interference. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural block diagram of an electronic device based on related technologies;

[0014] Figure 2 This is one of the structural block diagrams of an antenna module according to an embodiment;

[0015] Figure 3 This is a second structural block diagram of an antenna module according to one embodiment;

[0016] Figure 4 This is the third structural block diagram of an antenna module according to one embodiment;

[0017] Figure 5 This is the fourth structural block diagram of an antenna module according to one embodiment;

[0018] Figure 6 This is the fifth structural block diagram of an antenna module according to one embodiment;

[0019] Figure 7 This is the sixth structural block diagram of an antenna module according to one embodiment;

[0020] Figure 8 This is the seventh structural block diagram of an antenna module according to one embodiment;

[0021] Figure 9 This is the eighth structural block diagram of an antenna module according to one embodiment;

[0022] Figure 10 This is the ninth structural block diagram of an antenna module according to one embodiment;

[0023] Figure 11 This is the tenth structural block diagram of an antenna module according to one embodiment;

[0024] Figure 12 This is an eleventh structural block diagram of an antenna module according to one embodiment;

[0025] Figure 13 This is the twelfth structural block diagram of an antenna module according to one embodiment;

[0026] Figure 14 This is the thirteenth structural block diagram of an antenna module according to one embodiment;

[0027] Figure 15 This is the fourteenth structural block diagram of an antenna module according to one embodiment;

[0028] Figure 16 This is a structural block diagram of an antenna module according to one embodiment;

[0029] Figure 17 This is the sixteenth structural block diagram of an antenna module according to one embodiment;

[0030] Figure 18 This is one of the structural block diagrams of an electronic device according to an embodiment;

[0031] Figure 19 This is a second structural block diagram of an electronic device according to an embodiment;

[0032] Figure 20 This is the third structural block diagram of an electronic device according to an embodiment;

[0033] Figure 21 The fourth structural block diagram of an electronic device according to an embodiment;

[0034] Figure 22 The fifth structural block diagram of an electronic device according to an embodiment;

[0035] Figure 23 This is one of the circuit diagrams of an antenna module according to an embodiment;

[0036] Figure 24 This is a second circuit diagram of an antenna module according to one embodiment;

[0037] Figure 25 Here is an S11 curve diagram of the first antenna in one embodiment;

[0038] Figure 26 This is a system efficiency curve of the first antenna in one embodiment;

[0039] Figure 27 This is an S11 curve diagram of the second antenna in one embodiment;

[0040] Figure 28 This is a system efficiency curve of the second antenna in one embodiment;

[0041] Figure 29 This is one of the 3D radiation patterns of a Tiantong satellite antenna according to an embodiment;

[0042] Figure 30 This is the second 3D radiation pattern of a Tiantong satellite antenna according to one embodiment;

[0043] Figure 31 One embodiment of the Tiantong satellite antenna 2D radiation pattern and gain;

[0044] Figure 32 One embodiment of the Tiantong satellite antenna 2D radiation pattern and gain;

[0045] Figure 33 This is an isolation curve diagram of two N78 antennas in one embodiment;

[0046] Figure 34 This is the third circuit diagram of an antenna module according to one embodiment;

[0047] Figure 35 This is the sixth structural block diagram of an electronic device according to an embodiment. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0049] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intervening element present.

[0050] With the development of satellite technology, satellite communication has become a major focus for mobile terminals. For example, in the mobile phone industry, support for satellite communication (BeiDou or TianTong) has become a selling point for high-end flagship phones. Compared with conventional mobile phone antennas, satellite antennas have additional requirements for radiation pattern and polarization. Since satellites are in the sky, the main lobe of a mobile phone satellite antenna's radiation pattern faces upwards. Furthermore, TianTong satellites use left-hand circular polarization for both transmission and reception, while BeiDou satellites use left-hand circular polarization for transmission and right-hand circular polarization for reception. This requires mobile phone satellite antennas to have corresponding circular or linear polarization.

[0051] The BeiDou and TianTong satellites also operate in the MHB band. A typical smartphone usually has four MHB (Mid-High Band) antennas, arranged in a crisscross pattern, located at the top, bottom, upper left, and upper right of the phone, such as... Figure 1 As shown in the diagram. This layout ensures that at least one or two antennas are not obstructed by the hand in any grip position, guaranteeing phone communication capabilities. Furthermore, the four MHB antennas are spaced far apart, eliminating isolation issues. For satellite phones, an additional satellite antenna needs to be designed in addition to the four MHB antennas. Considering the scenario where users hold the phone with one hand (left or right) when using satellite communication, the satellite antenna is best placed at the top of the phone.

[0052] However, the upper bezel of the phone has limited space, and there are already three MHB antennas distributed in the upper bezel. Adding another satellite antenna would typically involve reusing it with antennas of other frequency bands, which could reduce overall efficiency and potentially lead to higher system withstand voltage risks. Alternatively, a separate satellite antenna could be designed, which might couple with other antennas of the same or similar frequencies, causing interference and reducing isolation.

[0053] Based on this, embodiments of this application provide an antenna module and electronic device that can improve the coupling problem between satellite antennas and other antennas of the same frequency or close frequency bands while ensuring overall efficiency, thereby increasing isolation.

[0054] The antenna module described in this application can be applied to electronic devices with wireless communication capabilities. These electronic devices can be handheld devices, in-vehicle devices, smart cars, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc. For ease of description, the devices mentioned above are collectively referred to as electronic devices.

[0055] Figure 2 Here is a structural block diagram of an antenna module according to one embodiment, with reference to Figure 2 In this embodiment, the antenna module includes: a first antenna ANT1 and a second antenna ANT2.

[0056] The first antenna ANT1 includes a first feed S1, a first radiating stub 110, the first radiating stub 110 having a first free end (Z1 in the figure), a first ground end (D1 in the figure), and a first feed point located between the first free end and the first ground end; the second antenna ANT2 includes a second feed S2 and a second radiating stub 210, the second radiating stub 210 having a second free end (Z2 in the figure), a second ground end (D1 in the figure), and a second feed point located between the second free end and the second ground end, and a gap is formed between the second free end and the first free end. When the first feed point is connected to the first feed source S1 and the second feed point is connected to the ground, the first feed source S1 excites the first radiating stub 110 to operate in the first resonant mode to support the satellite communication frequency band; when the second feed point is connected to the second feed source S2 and the first feed point is connected to the ground, the second feed source S2 excites the second radiating stub 210 to operate in the second resonant mode to support the first frequency band; the first frequency band and the satellite communication frequency band are within a preset frequency range.

[0057] The first feed stub S1 and the first radiating stub 110 can be combined to form the first antenna ANT1, and the second feed stub S2 and the second radiating stub 210 can be combined to form the second antenna ANT2. A gap is formed between the first antenna ANT1 and the second antenna ANT2. The first feed point of the first radiating stub 110 can be connected to the first feed stub S1. Under the excitation of the feed signal provided by the first feed stub S1, a current is generated on the surface of the first radiating stub 110, and the first radiating stub 110 operates in a first resonant mode to support the transmission of satellite communication frequency band signals. The second feed point of the second radiating stub 210 can be connected to the second feed stub S2. Under the excitation of the feed signal provided by the second feed stub S2, a current is generated on the surface of the second radiating stub 210, and the second radiating stub 210 operates in a second resonant mode to support the transmission of first frequency band signals. The first feed stub S1 and the second feed stub S2 can be devices such as radio frequency chips that provide feed signals.

[0058] The fact that the first frequency band and the satellite communication frequency band are within a preset frequency range can be understood as the first frequency band and the satellite communication frequency band being in adjacent frequency ranges. Adjacent frequency ranges can include at least one of two frequency bands that are spaced apart within the preset frequency range or two frequency bands that at least partially overlap. Furthermore, two frequency bands that are close to completely overlap or completely overlap can be understood as being on the same frequency.

[0059] For example, the satellite communication frequency band may include at least one of the BeiDou frequency band and the TianTong frequency band. The BeiDou frequency band may include at least one of the BeiDou L1 frequency band, the BeiDou L2 frequency band and the BeiDou S frequency band. The TianTong frequency band may include at least one of the transmit (Tx) frequency band and the receive (Rx) frequency band.

[0060] For example, the satellite communication frequency band includes the Tiantong frequency band, and the first frequency band may include the MHB frequency band; for example, when the frequency range of the Tx frequency band is 1.98GHz-2.01GHz, the frequency range of the Rx frequency band is 2.17GHz-2.2GHz, and the Tiantong frequency band and the first frequency band partially overlap, the first frequency band may be the B1 (1.92GHz-2.17GHz) band of MHB.

[0061] Because the first antenna ANT1 and the second antenna ANT2 are extremely close together and lack physical isolation, strong coupling interference is inevitable. Furthermore, due to their overlapping operating frequencies, band-stop and band-pass devices cannot be used on the matching path. Therefore, in related technologies, there is a problem of low isolation between the first antenna ANT1 and the second antenna ANT2.

[0062] In this embodiment, the first antenna ANT1 and the second antenna ANT2 do not operate simultaneously: When the first antenna ANT1 needs to operate, the first feed point is connected to the first feed source S1, so that the first feed source S1 excites the first radiating stub 110 to operate in the first resonant mode, supporting the satellite communication frequency band; the second feed point is connected to the ground, so that the second antenna ANT2 does not operate. When the first antenna ANT1 does not need to operate, the first feed point is connected to the ground, and at the same time, the second feed point is connected to the second feed source S2, so that the second feed source S2 excites the second radiating stub 210 to operate in the second resonant mode, supporting the first frequency band. Thus, the first antenna ANT1 and the second antenna ANT2 are designed independently, resulting in low system withstand voltage risk and no isolation issues. For example, the first feed point can be directly short-circuited to ground, or the first feed point can be connected to ground through a large capacitor, making the first feed point connected to the ground; the second feed point can be directly short-circuited to ground, or the second feed point can be connected to ground through a large capacitor, making the second feed point connected to the ground.

[0063] The antenna module provided in this embodiment includes a first antenna ANT1 and a second antenna ANT2. The first antenna ANT1 includes a first feed stub S1 and a first radiating stub 110. The second antenna ANT2 includes a second feed stub S2 and a second radiating stub 210. When the first antenna ANT1 needs to operate, the first feed point is connected to the first feed stub S1, so that the first feed stub S1 excites the first radiating stub 110 to operate in the satellite communication frequency band; the second feed point is connected to ground, so that the second antenna ANT2 does not operate. When the first antenna ANT1 does not need to operate, the first feed point is connected to ground, and the second feed point is connected to the second feed stub S2, so that the second feed stub S2 excites the second radiating stub 210 to operate in the first frequency band. Therefore, the first antenna ANT1 and the second antenna ANT2 are designed independently, resulting in low system withstand voltage risk and no isolation issues.

[0064] In one embodiment, such as Figure 3 As shown, the first antenna ANT1 also includes a first switching circuit 120, and the second antenna ANT2 also includes a second switching circuit 220.

[0065] The first switching circuit 120 is connected to the first feed point, the first feed source S1, and the ground terminal respectively, and is used to switch the connection between the first feed point and the ground terminal; the second switching circuit 220 is connected to the second feed point, the second feed source S2, and the ground terminal respectively, and is used to switch the connection between the second feed point and the ground terminal.

[0066] Specifically, the first switching circuit 120 disconnects the connection between the first feed point and the ground terminal, and the second switching circuit 220 connects the connection between the second feed point and the ground terminal, so that the first feed point is connected to the first feed source S1 and the second feed point is connected to the ground terminal; the first switching circuit 120 connects the connection between the first feed point and the ground terminal, and the second switching circuit 220 disconnects the connection between the second feed point and the ground terminal, so that the first feed point is connected to the ground terminal and the second feed point is connected to the second feed source S2.

[0067] It is understood that the first switching circuit 120 connecting the first feed point to the ground can include directly connecting the first feed point to the ground, which is equivalent to short-circuiting the first feed point to the ground; or it can include indirectly connecting the first feed point to the ground. For example, if the satellite communication frequency band is the Tiantong frequency band, the first feed point can be connected to the ground through a large capacitor, which can also prevent the first feed source S1 from exciting the first radiating branch 110 to work.

[0068] The second switching circuit 220 connects the second feed point to ground. This can include directly connecting the second feed point to ground, which is equivalent to short-circuiting the second feed point to ground; or indirectly connecting the second feed point to ground. For example, if the first frequency band is a mid-to-high frequency band, the second feed point can be connected to ground through a large capacitor, which can also prevent the second feed source S2 from exciting the second radiating branch 210. The choice between short-circuiting or using a large capacitor to ground depends on the actual situation. For example, if DC blocking is required, a large capacitor to ground can be selected.

[0069] For example, the first switching circuit 120 and the second switching circuit 220 may each include a switching unit, which directly switches the connection state between the power supply point and the ground terminal; for example, the switching unit may be a single-pole single-throw switch (SPST).

[0070] For example, the first switching circuit 120 and the second switching circuit 220 may each include a matching unit, which may be, for example, a large capacitor. The matching unit is connected to the switching unit so as to switch the connection state with the corresponding feed point and ground terminal by switching the switching unit.

[0071] For example, the first switching circuit 120 includes a first switching switch SPST1 and a matching unit 1, and the second switching circuit 220 includes a second switching switch SPST2 and a matching unit 2. The matching unit 1 and the matching unit 220 may each include a large capacitor. Thus, the connection state between each feed point and the ground terminal is switched by the first switching switch SPST1 and the matching unit 1, and the second switching switch SPST2 and the matching unit 2.

[0072] This embodiment uses the first switching circuit 120 and the second switching circuit 220 to switch the working states of the first antenna ANT1 and the second antenna ANT2, so that the antenna module can improve the isolation between the first antenna ANT1 and the second antenna ANT2 while supporting satellite communication frequency bands and the first frequency band.

[0073] In one embodiment, such as Figure 4 As shown, the satellite communication frequency band includes a transmission frequency band and a reception frequency band; the first antenna ANT1 also includes: a first matching circuit 130.

[0074] The first matching circuit 130 is connected to the first feed point, the first switching circuit 120, and the first feed source S1, respectively. It is used to adjust the resonant frequency of the first resonant mode when the first switching circuit 120 disconnects the connection between the first feed point and the ground, so that the first antenna ANT1 supports the satellite communication frequency band of the target.

[0075] The target's satellite communication frequency band includes either the transmitting frequency band or the receiving frequency band. The transmitting frequency band and the receiving frequency band correspond to different resonant frequencies. By adjusting the resonant frequency of the first resonant mode through the first matching circuit 130, the first resonant mode can be adjusted to support the target's satellite communication frequency band.

[0076] For example, the first matching circuit 130 may include a switching circuit and multiple matching units with different matching parameters. The matching units with different matching parameters can adjust the first resonant mode to different resonant frequencies. Specifically, when the first switching circuit 120 disconnects the connection between the first feed point and ground, the switching unit in the first matching circuit 130 can switch the target matching unit to conduct to the first feed point, thereby adjusting the first resonant mode to the target resonant frequency. For example, the different matching units may be capacitors, inductors, or other devices or combinations of devices with different parameter values.

[0077] For example, the first matching circuit 130 and the first switching circuit 120 can be combined to form a first matching switching circuit. The first matching switching circuit may include a single-pole multi-throw switch, the first end of which can be connected to the first feed point, and the multiple second ends of which can be respectively connected to multiple matching units; or, the first matching switching circuit may include multiple switches, one end of which is connected to the first feed point, and the other end of which can be respectively connected to multiple matching units. Through the first matching switching circuit, the connection between the first feed point and the ground can be switched (for example, one of the matching units is a large capacitor; when the large capacitor is conducting and connected to the first feed point and the ground, it is equivalent to the first feed point being conducting and connected to the ground), and different resonant frequencies can be switched when the connection between the first feed point and the ground is disconnected, thereby realizing the switching between the transmitting frequency band and the receiving frequency band.

[0078] In one embodiment, such as Figure 4 As shown, the first frequency band includes multiple sub-frequency bands; the second antenna ANT2 also includes: a second matching circuit 230.

[0079] The second matching circuit 230 is connected to the second feed point, the second switching circuit 220, and the second feed source S2, respectively. It is used to adjust the resonant frequency of the second resonant mode when the second switching circuit 220 disconnects the connection between the second feed point and the ground terminal, so that the second antenna ANT2 supports the target sub-band.

[0080] The first frequency band includes multiple first sub-frequency bands, each located within a different sub-frequency range. For example, if the first frequency band is an MHB band, it may include multiple first sub-frequency bands such as B1 / N1, B3 / N3, B39 / N39, B40 / N40, and B41 / N41. The resonant frequency of the second resonant mode can be adjusted via the second matching circuit 230, thereby adjusting the sub-frequency band supported by the second resonant mode.

[0081] For example, the second matching circuit 230 may include a switching circuit and multiple matching units with different matching parameters. These matching units with different parameters can adjust the second resonant mode to different resonant frequencies. Specifically, when the second switching circuit 220 disconnects the connection between the second feed point and ground, the switching unit in the second matching circuit 230 can switch the target matching unit to conduct at the second feed point, thereby adjusting the second resonant mode to the target resonant frequency. For example, the different matching units may be capacitors, inductors, or other devices or combinations of devices with different parameter values.

[0082] For example, the second matching circuit 230 and the second switching circuit 220 can be combined to form a second matching switching circuit. The second matching switching circuit may include a single-pole multi-throw switch, the first end of which can be connected to the second feed point, and the multiple second ends of which can be respectively connected to multiple matching units; or, the second matching switching circuit may include multiple switches, one end of which is connected to the second feed point, and the other end of which can be respectively connected to multiple matching units. Through the second matching switching circuit, the connection between the second feed point and the ground can be switched (for example, one of the matching units is a large capacitor; when the large capacitor is conducting and connected to the first feed point and the ground, it is equivalent to the second feed point being conducting and connected to the ground), and different resonant frequencies can be switched when the connection between the second feed point and the ground is disconnected, thereby realizing the switching of different sub-frequency bands.

[0083] It is understood that in the first frequency band, different sub-frequency bands correspond to second resonant modes with different current distributions. In one embodiment, taking the first frequency band as an example, which includes a first sub-frequency band and a second sub-frequency band, the first sub-frequency band is smaller than the second sub-frequency band.

[0084] When the second resonant mode supports the first sub-frequency band, the current of the second resonant mode is distributed between the second grounding terminal and the first grounding terminal; when the second resonant mode supports the second sub-frequency band, the current of the second resonant mode is distributed between the second grounding terminal and the first feed point, and returns to ground through the first feed point.

[0085] The effective length of the current distribution corresponding to the first sub-frequency band is greater than the effective length of the current distribution corresponding to the second sub-frequency band. Therefore, the resonant frequency corresponding to the first sub-frequency band is less than the resonant frequency corresponding to the second sub-frequency band, ensuring that the first sub-frequency band is less than the second sub-frequency band.

[0086] For example, such as Figure 5 As shown, the second resonant mode, in which the current is distributed between the second ground terminal and the first ground terminal, may include: a quarter-wavelength mode from the second ground terminal to the second free terminal, and a quarter-wavelength mode from the first free terminal to the first ground terminal. For example, as... Figure 6 As shown, the second resonant mode in which the current is distributed between the second grounding terminal and the first feed point and returns to ground through the first feed point may include: a quarter-wavelength mode from the second grounding terminal to the second free terminal, and a quarter-wavelength mode from the first free terminal to the first feed point and returns to ground through the first switching circuit 120.

[0087] For example, the first frequency band is the MHB band, the first sub-frequency band can be the adjacent B3 and B1 bands, and the second frequency band can be the B41 band. Thus, by exciting the second radiating stub 210 to generate different current distributions, a second resonant mode supporting different frequency bands can be generated accordingly.

[0088] In one embodiment, such as Figure 7 As shown, the antenna module also includes a third antenna, ANT3.

[0089] The third antenna ANT3 includes a third radiating stub 310, which has a third free end (Z3 in the figure) and a third ground end (D3 in the figure). The third ground end is close to the first radiating stub 110, and the third free end is far away from the first radiating stub 110. The first resonant mode includes a radiating mode and a balanced mode. The current in the radiating mode is distributed between the first ground end and the second ground end, and the current in the balanced mode is distributed between the third free end and the first free end.

[0090] When the first antenna ANT1 operates in the first resonant mode, there are two modes: radiation mode and balanced mode, which are combined.

[0091] The radiation pattern corresponds to the satellite communication frequency band, for example, the frequency corresponding to Tx / Rx, with a deep standing wave depth and current distribution between the first and second grounding terminals. For example, as shown... Figure 8 As shown, the radiation modes include a quarter-wavelength mode from the first ground terminal to the first free terminal and a quarter-wavelength mode from the second free terminal to the second ground terminal.

[0092] The balanced mode is the mode of radiation radiated by the auxiliary radiation mode, corresponding to a very shallow standing wave, with the current distribution between the third free end and the first free end. For example, as... Figure 9 As shown, the balanced mode includes half-wavelength modes of the first radiative stub 110 and the third radiative stub 310.

[0093] The radiation mode and the balanced mode are very close together, influencing and merging with each other. Ultimately, the actual current distribution of the first antenna ANT1 includes both the radiation mode current and the balanced mode current. The balanced mode has little impact on antenna efficiency, but a significant impact on the directivity and gain of the satellite antenna, making the energy radiated by the first antenna ANT1 more concentrated.

[0094] In one embodiment, such as Figure 10 As shown ( Figure 10 (The actual current distribution of the first antenna ANT1 is shown). The third ground terminal and the first ground terminal are reused as the same ground terminal. Thus, the third radiating stub 310 and the first radiating stub 110 reuse the same ground terminal. Compared with the third radiating stub 310 and the first radiating stub 110 each having their own independent ground terminals, the current intensity generated by the coupling of the two radiating stubs in the balanced mode is greater when the ground terminal is reused, and the energy radiated by the first antenna ANT1 is more concentrated.

[0095] In one embodiment, such as Figure 11 As shown, the third radiating stub 310 also has a matching point located between the third free end and the first ground end. The antenna module also includes a third matching circuit 320 connected to the matching point, used to adjust the frequency of the balanced mode so that the frequency of the balanced mode is less than the frequency of the radiating mode.

[0096] The frequency of the balanced mode can be adjusted by the third matching circuit 320. When the frequency of the balanced mode is lower than that of the radiation mode, it can be ensured that the balanced mode can be moved before the radiation mode in both the transmitting and receiving frequency bands, thereby ensuring that the main lobe of the satellite antenna pattern faces upward and achieving higher gain.

[0097] In one embodiment, such as Figure 11 As shown, the third radiating stub 310 also has a third feed point, which is located between the third free end and the matching point. The third antenna ANT3 also includes a third feed source S3 connected to the third feed point. The third matching circuit 320 is further used to connect the third feed point to ground when the first antenna ANT1 is not operating in the satellite communication frequency band, so that the third feed source S3 excites the third radiating stub 310 to operate in the third resonant mode to support the second frequency band.

[0098] The third feed source S3 and the third radiating stub 310 combine to form the third antenna ANT3. The third feed point of the third radiating stub 310 can be connected to the third feed source S3. Under the excitation of the feed signal provided by the third feed source S3, a current is generated on the surface of the third radiating stub 310, and the third radiating stub 310 operates in the third resonant mode to support the transmission of the second frequency band signal. The third feed source S3 can be any device such as an RF chip that provides a feed signal.

[0099] When the first antenna ANT1 is operating in the satellite communication frequency band, the third radiating stub 310 does not need to assist in supporting the balanced mode of the first antenna ANT1. The third antenna ANT3 can operate in the second frequency band through the excitation of the third feed S3. Thus, the antenna module can support the satellite communication frequency band, the first frequency band, and the second frequency band, matching more communication frequency band requirements.

[0100] In one embodiment, the second feed S2 is also used to excite the second radiating stub 210 to operate in a fourth resonant mode to support the second frequency band.

[0101] In this embodiment, the second antenna ANT2 supports the second resonant mode and the fourth resonant mode in a common-feed manner. When the second feed source S2 provides the excitation signal corresponding to the first frequency band, it can excite the second radiating stub 210 to work in the second resonant mode to support the first frequency band. When the second feed source S2 provides the excitation signal corresponding to the second frequency band, it can excite the second radiating stub 210 to work in the fourth resonant mode to support the second frequency band.

[0102] Therefore, on the one hand, the second antenna ANT2 can support multiple different frequency bands, thereby enabling the antenna module to support satellite communication frequency bands, the first frequency band, and dual second frequency bands, further matching more communication frequency band requirements; on the other hand, since the second antenna ANT2 and the third antenna ANT3 are far apart and have physical grounding, short circuits, or capacitors to ground, there is no isolation problem between the two antennas.

[0103] In one embodiment, such as Figure 12 As shown, the current distribution in the fourth resonant mode is between the second ground terminal and the first ground terminal; as Figure 13 As shown, the current distribution in the third resonant mode is between the matching point and the third free end.

[0104] contrast Figure 12 , Figure 13 The two antennas supporting the second frequency band are relatively far apart. Furthermore, the matching of the first radiating stub 110 and the third radiating stub 310, such as short-circuiting the first feed point of the first radiating stub 110 or grounding a large capacitor (when the first antenna ANT1 is not working), and grounding the matching point capacitor of the third radiating stub 310, also provides some isolation. The second frequency band signal fed from the third radiating stub 310 is difficult to couple to the second radiating stub 210, and the two antennas have virtually no isolation issues in the second frequency band. Since a long "isolation ground" is not required between the second radiating stub 210 and the third radiating stub 310, the amount of metal in the antenna module area is reduced, resulting in a lighter weight.

[0105] For example, the fourth resonant mode is a quarter-wavelength mode from the second ground end to the second free end of the second radiating stub 210, and a three-quarter-wavelength mode from the first free end to the first ground end of the first radiating stub 110.

[0106] For example, the third resonant mode is a 1 / 4 wavelength mode from the matching point of the third radiating stub 310 to the third free end, which can achieve higher efficiency.

[0107] In one embodiment, such as Figure 14 As shown, the antenna module also includes a fourth antenna, ANT4.

[0108] The fourth antenna ANT4 includes a fourth feed S4 and a fourth radiating stub 410. The fourth radiating stub 410 shares a second ground terminal with the second radiating stub 210. The fourth radiating stub 410 has a fourth free end (Z4 in the figure) and a fourth feed point, which is located between the second ground terminal and the fourth free end. The fourth feed S4 is used to excite the fourth radiating stub 410 to support the second frequency band.

[0109] The fourth feed stub S4 and the fourth radiating stub 410 can be combined to form the fourth antenna ANT4. The fourth radiating stub 410 reuses the second ground terminal, which can reduce the area occupied by the antenna module. The fourth feed point of the fourth radiating stub 410 can be connected to the fourth feed stub S4. Under the excitation of the feed signal provided by the fourth feed stub S4, a current is generated on the surface of the fourth radiating stub 410 to support the transmission of the second frequency band signal.

[0110] Compared to the previous embodiment, the fourth antenna ANT4, which supports the second frequency band, and the second antenna ANT2, which supports the first frequency band, are fed separately. Therefore, the third antenna ANT3 and the fourth antenna ANT4, which support the second frequency band, are spaced further apart, eliminating isolation issues. Furthermore, due to the separate feeding design of the first frequency band supported by the second antenna ANT2 and the second frequency band supported by the fourth antenna ANT4, the two frequency bands can be adjusted independently, each achieving higher system efficiency. This design also has minimal impact on the first antenna ANT1.

[0111] In one embodiment, the third feed S3 is also used to excite the third radiating branch 310 to support at least one of the third and fourth frequency bands; wherein the second, third, and fourth frequency bands can be frequency bands of different standards.

[0112] In this embodiment, the third antenna ANT3 adopts a common feed point approach, which can support the second frequency band, and at least one of the third and fourth frequency bands. For example, taking the third antenna ANT3 simultaneously supporting the second, third, and fourth frequency bands as an example, the third feed source S3 can provide different feed signals to excite the third radiating stub 310 to support different frequency bands. For instance, when the third feed source S3 provides an excitation signal corresponding to the second frequency band, the third radiating stub 310 can be excited to operate in the first frequency band; when the third feed source S3 provides an excitation signal corresponding to the third frequency band, the third radiating stub 310 can be excited to operate in the third frequency band; and when the third feed source S3 provides an excitation signal corresponding to the fourth frequency band, the third radiating stub 310 can be excited to operate in the fourth frequency band.

[0113] This allows the third antenna ANT3 to support multiple different frequency bands, enabling the antenna module to support satellite communication frequency bands, the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band, further matching more communication frequency band requirements.

[0114] For example, the first frequency band may include a mid-to-high frequency band, the second frequency band may include an ultra-high frequency band, the third frequency band may include a GPS L5 band, and the fourth frequency band may include a Wi-Fi / BT 5G band. The GPS L5 band and the Wi-Fi / BT 5G band are in different frequency ranges from the satellite communication band and the ultra-high frequency band, respectively, and there is no interference problem.

[0115] In one embodiment, such as Figure 15 As shown, the antenna module also includes: the fifth antenna ANT5.

[0116] The fifth antenna ANT5 includes a fifth feed S5 and a fifth radiating stub 510. The fifth radiating stub 510 has a fifth free end (Z5 in the figure), a fourth ground end (D4 in the figure), and a fifth feed point. The fifth feed point is located between the fifth free end and the fourth ground end, and a gap is formed between the fifth free end and the third free end; Figure 16 As shown, the fifth antenna ANT5 also includes a third switching circuit 520, which is connected to the fifth feed source S5 and the fifth feed point, respectively. When the first feed point is connected to the first feed source S1, the third switching circuit 520 connects the fifth feed point to the ground, and the current in the balanced mode is still distributed between the fifth free end and the fifth feed point; when the third switching circuit 520 disconnects the connection between the fifth feed point and the ground, the fifth feed source S5 excites the fifth radiating stub 510 to support the preset frequency band.

[0117] The fifth feed S5 and the fifth radiating stub 510 can be combined to form the fifth antenna ANT5. The fifth antenna ANT5 can support radiation in a preset frequency band, or, when the first antenna ANT1 is operating, provide a stronger balanced radiation excitation mode.

[0118] When the first feed point is connected to the first feed source S1, i.e., when the first antenna ANT1 is in operation, the third switching circuit 520 can connect the fifth feed point to ground. For example, the fifth feed point can be short-circuited or connected to ground with a large capacitor. At this time, the fifth radiating stub 510 is equivalent to a parasitic stub of the first antenna ANT1. It can be coupled to the third radiating stub 310 when it is coupled to the first radiating stub 110, generating a balanced current distributed between the fifth free end and the fifth feed point (e.g., ...). Figure 17 As shown, Figure 17(The current after the fusion of radiation mode and balanced mode) makes the antenna module excite a stronger balanced mode, which in turn makes the radiation energy of the first resonant mode more concentrated, and can eliminate the influence of the fifth feed S5 on the balanced mode.

[0119] When the first antenna ANT1 is in a non-operating state, the third switching circuit 520 can disconnect the connection between the fifth feed point and the ground terminal, and the fifth feed source S5 can excite the fifth radiating branch 510 to support the preset frequency band. The preset frequency band can be, for example, at least one of the GPS L1 band and the WIFI / BT 2.4G band, so that the antenna module can also support the GPS L1 band, WIFI / BT 2.4G band and other frequency bands, matching the communication needs of more frequency bands, and realizing satellite positioning and short-range communication functions on the basis of realizing cellular communication and satellite communication.

[0120] For example, the third switching circuit 520 may include a switching unit that directly switches the connection state between the power supply point and the ground terminal; for example, the switching unit may be a single-pole single-throw switch (SPST).

[0121] For example, the third switching circuit 520 may also include a matching unit, which may be a large capacitor. The matching unit is connected to the switching unit so as to switch the connection state with the corresponding feed point and ground terminal by switching the switching unit.

[0122] This application also provides an electronic device, including: a mid-frame and an antenna module as described in any one or a combination of the above embodiments.

[0123] Among them, such as Figure 18 As shown, the middle frame 60 includes a middle plate 610 and a top frame 621, a first side frame 623, a bottom frame 622 and a second side frame 624 that are connected sequentially from end to end on the side of the middle plate 610. The middle plate 610 is used to provide a ground terminal. The first antenna ANT1 and the second antenna ANT2 are disposed on the top frame 621.

[0124] For example, the middle board 610 can be used to install electronic components such as batteries, motherboards, and camera modules of electronic devices. The motherboard can integrate electronic components such as processors, storage units, power management modules, and baseband chips of electronic devices. The motherboard can be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). In the above embodiment, the ground terminal can be a metal ground plane on the motherboard, thereby providing a ground plane. Partial radio frequency circuits for processing radio frequency signals can be integrated on the circuit board, as well as controllers that can control the operation of electronic devices.

[0125] For example, electronic devices, including antenna modules, can be compatible with, for example, Figure 19 The decorative element shown (710 in the figure) can have its area directly below the camera. The decorative element can also be without a grounding point, thus not generating significant noise for the antenna module. When the decorative element is not grounded, it has no electrical connection to the motherboard or the mid-frame, further reducing hardware costs.

[0126] For example, the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, and the fifth antenna ANT5 in the above embodiments are respectively as follows: Figure 19 The distribution is shown.

[0127] For example, such as Figure 20 As shown, the grounding terminals of each antenna are connected to the ground terminal via steel sheet welding. Steel sheet welding eliminates the need for a long "isolation ground," reducing the overall weight of the electronic device, slowing heat dissipation, and making it less likely for heat from the motherboard and battery to be conducted to the radiating branches. The electronic frame is lighter and less prone to overheating, significantly improving the user's grip experience. In other embodiments, the grounding terminals of each antenna can also be connected to the ground terminal via grounding components, grounding branches, wiring, etc., instead of being limited to steel sheet welding.

[0128] The electronic device provided in this embodiment has two advantages. First, the first antenna ANT1 and the second antenna ANT2 in the antenna module are designed independently, resulting in low system withstand voltage risk. While maintaining high overall efficiency, it improves the isolation between the satellite antenna and other antennas, reducing interference. As a result, the electronic device can support high-efficiency satellite communication and first-band communication. Second, placing the first antenna ANT1 and the second antenna ANT2 on the top frame allows the radiation direction of the first antenna ANT1 to be directed towards the top of the electronic device, facilitating communication between the electronic device and the satellite. It also ensures that the first antenna ANT1 and the second antenna ANT2 are not held by the user in any grip position, guaranteeing the communication capability of the electronic device.

[0129] In one embodiment, such as Figure 21 As shown, the electronic device also includes: a decorative element (710 in the figure) and a sixth feed source (not shown in the figure).

[0130] The decorative element is positioned near and spaced from the top edge. It has a sixth feed point and a ground point near the top edge, with the ground point connected to the ground terminal. A sixth feed source, connected to the sixth feed point, is used to excite the decorative element to support the low-frequency (LB) band.

[0131] The sixth antenna is formed by combining the sixth feed source and the decorative element. The sixth feed point is connected to the sixth feed source. Under the excitation of the sixth feed source, the decorative element can generate current to support the transmission of low-frequency band signals and realize the antenna function.

[0132] The decorative element serves a decorative purpose in the electronic device. It is typically made of metal and is located in a non-framed area, but can be close to the frame, such as the top frame, thus not affecting the area of ​​the frame region. The decorative element itself can occupy a relatively large area. Because the decorative element can be large and has a low self-resonant frequency, it is easy to design an LB antenna. Therefore, when the sixth feed source excites the decorative element to support a low-frequency band, the decorative element can achieve high radiation efficiency. It is understood that in other embodiments, different signals can be fed in to excite the decorative element to support radiation in other non-low-frequency bands; examples are not provided here.

[0133] For example, the PCB board can serve as the "ground" of the decorative element, which provides a larger clearance than the mid-frame antenna and may therefore offer better performance.

[0134] For example, the area directly below the decorative element can be the camera area, and there can be multiple grounding points. This can avoid the problem of the decorative element interfering with the camera when it performs the antenna function, and it can also avoid the problem of the decorative element interfering with other modules and devices around it.

[0135] For example, such as Figure 21 As shown, a sixth feed point (circular mark) is designed at the upper left corner of the decorative piece, and grounding points (triangular marks) are set at other positions to excite the 1 / 2 wavelength mode from the sixth feed point back to ground.

[0136] The following example uses a mobile phone as the electronic device, the Tiantong Tx band and Tiantong Rx band as the satellite communication frequency bands, the MHB band as the first frequency band, and the N78 band as the second frequency band to further explain the above embodiment:

[0137] Related technical embodiment 1

[0138] Mobile phones using Tiantong satellite antennas can reuse GPS L1 / WIFI 2.4 or MHB antennas. For example, the BeiDou satellite Tx band is close to the GPS L1 frequency, and the BeiDou satellite Rx band is close to the WIFI 2.4 frequency. A single antenna could be designed to handle the transmission and reception of BeiDou satellites, GPS L1 band, and WIFI 2.4 band. However, since the VSWR bandwidth corresponding to GPS L1 and WIFI 2.4 is generally very narrow, the overall efficiency may decrease if Tiantong's Tx and Rx bands are also utilized.

[0139] Related technical embodiment 2

[0140] The Tiantong satellite antenna and the MHB antenna share the same antenna, so there is no isolation issue. However, the Tiantong satellite's transmission power is much higher than the MHB's (Tiantong's transmission power is 37 dBm, while MHB's transmission power is typically 23-26 dBm). The shared antenna design for Tiantong and MHB places very high demands on the system's voltage withstand capability.

[0141] Example 1 of this application

[0142] The antenna module is located on the top bezel of the phone, with the decorative element centered and without a grounding point. For example... Figure 22 As shown, the antenna module includes the first antenna ANT1 (supporting the Tiantong satellite band), the second antenna ANT2 (supporting MHB and N78), the third antenna ANT3 (supporting GPS L5, N78, and WIFI 5G), and the fifth antenna ANT5 (supporting GPS L1 and WIFI 2.4G). The grounding terminals of each antenna are connected to the mid-frame via welded steel sheets, serving as the ground return. The thin steel sheets reduce the weight of the phone and minimize heat conduction.

[0143] The first switching circuit and the first matching circuit in the first antenna ANT1 are respectively as follows: Figure 23 As shown (the first switching circuit includes SPST1 and a connected matching unit; the first matching circuit includes SPST2 and a connected matching unit), when the antenna is working, SPST1 is disconnected, short-circuited, or connected to ground via a large capacitor. SPST2 enables the switching between the antenna's Tx and Rx states: SPST2OFF is the Rx state, and SPST2ON is the Tx state. The switching from Rx to Tx is achieved through SPST2 and its parallel capacitor.

[0144] The second switching circuit and the second matching circuit of the second antenna ANT2 are as follows: Figure 23 As shown (the two circuits are combined, corresponding to SP4T and multiple matching units connected to SP4T), when the first antenna ANT1 is working, RF1 in SP4T is turned on; when the first antenna ANT1 is not working, RF1 in SP4T is turned off, and the remaining three switches RF2, RF3, and RF4 switch the MHB frequency band.

[0145] The third matching circuit of the third antenna ANT3 is as follows: Figure 24As shown, the system includes an SPDT and a connected matching unit to switch the connection state between the third feed point and the ground. The SPDT RF1 is connected to a capacitor, ensuring that the balanced mode is shifted before the radiating mode regardless of whether it's Rx or Tx, thus ensuring the main lobe of the satellite antenna pattern faces upwards and achieving higher gain. When the first antenna ANT1 is not working, the SPDT RF1 is turned on, serving as the N78 return point. In this embodiment, the initial frequency of the balanced mode is higher than the Tx frequency and lower than the Rx frequency. Therefore, when both ends of the SPDT are disconnected at Rx, it corresponds to the Rx frequency; when the SPDT RF2 is turned on (RF2 is connected to a capacitor), it corresponds to the Tx frequency, shifting the balanced mode frequency to a lower frequency before the Tx frequency.

[0146] The third switching circuit of the fifth antenna ANT5 is shown in the figure. It includes SPST3 and a matching unit connected to it. When the first antenna ANT1 is working, SPST3 connects the fifth feed point to the ground, strengthens the excitation of the balanced mode, and eliminates the influence of the fifth feed source S5 on the balanced mode. When the first antenna ANT1 is not working, SPST3 disconnects the connection between the fifth feed point and the ground. The GPS L1 and WIFI 2.4 performance supported by the fifth antenna ANT5 is not affected.

[0147] Figure 25 , Figure 26 The S11 curve and system efficiency curve for the first antenna ANT1; Figure 27 , Figure 28 The S11 curve and system efficiency curve of the second antenna ANT2 show that the S11 curves of the first antenna ANT1 and the second antenna ANT2 are smooth, and the efficiency curves have no large dips, indicating that the ungrounded decorative component does not generate significant clutter. This embodiment is compatible with large decorative designs.

[0148] For the first antenna ANT1:

[0149] As can be seen from the S11 curve, regardless of whether it is Tx or Rx, there is a very shallow resonance before the main resonant mode (radiation mode), which is the balanced mode. The system efficiency of Tiantong Rx is about -3.25dB, and the system efficiency of Tiantong Tx is about -4.3dB. The antenna is initially in the Tiantong Rx state, and is switched to the Tx state through SPST 2 and capacitor, thus achieving a higher Rx efficiency.

[0150] The 3D of the first antenna ANT1 is as follows: Figure 29 , Figure 30 As shown, the 2D radiation patterns (left-handed components) are respectively as follows: Figure 31 , 32As shown. The z-axis is vertically upward, with the long side of the phone parallel to the z-axis; the y-axis is perpendicular to the phone screen and outward; the x-axis is parallel to the short side of the phone. Theta is the angle with the positive z-axis, and Phi is the angle with the positive x-axis. The main lobes of the Tx and Rx patterns point upward, towards the direction of the satellite. The Rx directivity coefficient is 4.1 dBi, linear polarization gain is 0.85 dBi, and left-handed gain is -1.95 dBi; the Tx directivity coefficient is 3.71 dBi, linear polarization gain is -0.3 dBi, and left-handed gain is -3.11 dBi. The efficiency, directivity, and gain of the first antenna ANT1 meet the requirements of Tiantong satellite communication.

[0151] For the second line ANT2:

[0152] The average efficiencies for each frequency band are as follows: 1.71-1.88GHz (B3): -5.01dB; 1.88-1.92GHz (B39): -5.11dB; 1.92-2.17GHz (B1): -4.8dB; 2.3-2.4GHz (B40): -6.0dB; 2.496-2.690GHz (B41): -4.86dB. All MHB bands exhibit relatively high efficiency.

[0153] Because RF1 of the SP4T is reserved for satellite use, it cannot independently tune the five frequency bands B1, B3, B39, B40, and B41. Therefore, the B40 VSWR in this embodiment is relatively shallow, resulting in lower efficiency. When the second antenna ANT2 switches between the aforementioned five frequency bands, the average efficiency for N78 (3.4-3.6GHz) is -6.5dB, -7.7dB, -6.34dB, -6.9dB, and -6.8dB respectively, with an efficiency fluctuation of approximately 1dB, which is relatively small.

[0154] For the third antenna ANT3:

[0155] The isolation between the third antenna ANT3 and the second antenna ANT2 is as follows: Figure 33 As shown, the isolation reaches -20dB at 3.5GHz. Isolation remains below -20dB between 3.3 and 3.8GHz. When the third antenna ANT3 and the second antenna ANT2 operate in the N78 band, the isolation between the two antennas meets the requirements.

[0156] Therefore, compared to related technical embodiments 1 and 2, the antenna module and electronic equipment of this embodiment have the following advantages: First, there is no isolation issue between the first antenna ANT1 and the second antenna ANT2, and high isolation can be achieved between the two top N78 antennas. The first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 can all achieve good system efficiency. Furthermore, by adjusting the position of the balanced mode, the directivity and gain of the satellite antenna are improved, keeping the main lobe of the radiation pattern pointing upwards. Second, it is compatible with large decorative parts, which helps to improve the performance of mobile phone photography and create a novel appearance. Moreover, the decorative parts are not designed with grounding points, reducing hardware costs.

[0157] Example 2 of this application

[0158] The second switching circuit 220 and the second matching circuit 230 in the second antenna ANT2 combine to form a matching switching circuit, as in the previous embodiment, such as Figure 34 As shown, the SP4T switch in the matching switching circuit can be replaced with the SPST4 switch, further reducing hardware costs. When the first antenna ANT1 is working, SPST1 is open, SPST2 is responsible for Tx / Rx switching, and SPST4 is short-circuited or connected to ground via a large capacitor. When MHB is working, SPST1 is short-circuited or connected to ground via a large capacitor, and SPST4 is open. ANT3 and ANT4 can still achieve good isolation. At this time, ANT4 provides dual-wavelength coverage for MHB.

[0159] Example 3 of this application

[0160] like Figure 35 As shown, the antenna module is located on the top bezel of the phone, with the decorative element centered and without a grounding point. The antenna module includes the first antenna ANT1 (supporting the Tiantong satellite band), the second antenna ANT2 (supporting MHB), the third antenna ANT3 (supporting GPS L5, N78, and WIFI 5G), the fourth antenna ANT4 (N78), and the fifth antenna ANT5 (supporting GPS L1 and WIFI 2.4G).

[0161] Specifically, the MHB and N78 antennas are redesigned as separate feeders, corresponding to the second antenna ANT2 and the fourth antenna ANT4, respectively, with the fourth antenna ANT4 positioned on the upper right side when viewed from the rear. The two N78 antennas at the top are further apart, eliminating isolation issues. The MHB and N78 antennas can be adjusted independently, each achieving higher system efficiency. Furthermore, this modification has minimal impact on the first antenna ANT1.

[0162] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0163] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An antenna module, characterized in that, include: The first antenna includes a first feed and a first radiating stub, the first radiating stub having a first free end, a first ground end, and a first feed point located between the first free end and the first ground end; The second antenna includes a second feed and a second radiating stub. The second radiating stub has a second free end, a second ground end, and a second feed point located between the second free end and the second ground end. A gap is formed between the second free end and the first free end. Specifically, when the first feed point is connected to the first feed source and the second feed point is connected to the ground, the first feed source excites the first radiating stub to operate in a first resonant mode to support the satellite communication frequency band; when the second feed point is connected to the second feed source and the first feed point is connected to the ground, the second feed source excites the second radiating stub to operate in a second resonant mode to support the first frequency band; the first frequency band and the satellite communication frequency band are within a preset frequency range.

2. The antenna module according to claim 1, characterized in that, The antenna module also includes: The first switching circuit is connected to the first feed point, the first feed source, and the ground terminal respectively, and is used to switch the connection between the first feed point and the ground terminal; The second switching circuit is connected to the second feed point, the second feed source, and the ground terminal respectively, and is used to switch the connection between the second feed point and the ground terminal; Wherein, the first switching circuit disconnects the connection between the first feed point and the ground terminal, and the second switching circuit connects the connection between the second feed point and the ground terminal, so that the first feed point is connected to the first feed source, and the second feed point is connected to the ground terminal; The first switching circuit connects the first feed point to the ground terminal, and the second switching circuit disconnects the second feed point from the ground terminal, so that the first feed point is connected to the ground terminal and the second feed point is connected to the second feed source.

3. The antenna module according to claim 2, characterized in that, The satellite communication frequency band includes a transmission frequency band and a reception frequency band; The first antenna also includes: The first matching circuit is connected to the first feed point, the first switching circuit, and the first feed source, respectively. It is used to adjust the resonant frequency of the first resonant mode when the first switching circuit disconnects the connection between the first feed point and the ground terminal, so that the first antenna supports the satellite communication frequency band of the target.

4. The antenna module according to claim 2, characterized in that, The first frequency band includes multiple sub-frequency bands; the second antenna further includes: The second matching circuit is connected to the second feed point, the second switching circuit, and the second feed source, respectively. It is used to adjust the resonant frequency of the second resonant mode when the second switching circuit disconnects the connection between the second feed point and the ground terminal, so that the second antenna supports the first sub-band of the target.

5. The antenna module according to claim 4, characterized in that, The first frequency band includes a first sub-frequency band and a second sub-frequency band, wherein the first sub-frequency band is smaller than the second sub-frequency band; When the second resonant mode supports the first sub-frequency band, the current of the second resonant mode is distributed between the second grounding terminal and the first grounding terminal; when the second resonant mode supports the second sub-frequency band, the current of the second resonant mode is distributed between the second grounding terminal and the first feed point, and returns to ground through the first feed point.

6. The antenna module according to claim 1, characterized in that, The antenna module also includes: The third antenna includes a third radiating stub, the third radiating stub having a third free end and a third ground end, the third ground end being close to the first radiating stub and the third free end being far from the first radiating stub; The first resonant mode includes a radiation mode and a balanced mode. The current in the radiation mode is distributed between the first ground terminal and the second ground terminal, and the current in the balanced mode is distributed between the third free terminal and the first free terminal.

7. The antenna module according to claim 6, characterized in that, The third radiating stub also has a matching point located between the third free end and the first ground end. The antenna module further includes: A third matching circuit, connected to the matching point, is used to adjust the frequency of the balanced mode so that the frequency of the balanced mode is less than the frequency of the radiation mode.

8. The antenna module according to claim 7, characterized in that, The third radiating stub also has a third feed point, which is located between the third free end and the matching point. The third antenna further includes: The third feed source is connected to the third feed point; The third matching circuit is further configured to connect the third feed point to the ground when the first antenna is not operating in the satellite communication frequency band, so that the third feed source excites the third radiating stub to operate in the third resonant mode to support the second frequency band.

9. The antenna module according to claim 8, characterized in that, The second feed source is also used to excite the second radiating stub to operate in the fourth resonant mode to support the second frequency band.

10. The antenna module according to claim 8, characterized in that, The antenna module also includes: The fourth antenna includes a fourth feed and a fourth radiating stub, wherein the fourth radiating stub shares the second ground terminal with the second radiating stub, and the fourth radiating stub has a fourth free end and a fourth feed point, wherein the fourth feed point is located between the second ground terminal and the fourth free end; The fourth feed source is used to excite the fourth radiating stub to support the second frequency band.

11. The antenna module according to claim 8, characterized in that, The antenna module also includes: The fifth antenna includes a fifth feed and a fifth radiating stub. The fifth radiating stub has a fifth free end, a fourth ground end, and a fifth feed point. The fifth feed point is located between the fifth free end and the fourth ground end, and a gap is formed between the fifth free end and the third free end. The third switching circuit is connected to the fifth feed source and the fifth feed point respectively; When the first feed point is connected to the first feed source, the third switching circuit connects the fifth feed point to the ground, and the current in the balanced mode is also distributed between the fifth free end and the fifth feed point; when the third switching circuit disconnects the connection between the fifth feed point and the ground, the fifth feed source excites the fifth radiating stub to support the preset frequency band.

12. The antenna module according to claim 8, characterized in that, The first frequency band includes the mid-to-high frequency band, and the second frequency band includes the ultra-high frequency band.

13. An electronic device, characterized in that, include: The middle frame includes a middle plate and a top frame, a first side frame, a bottom frame and a second side frame connected sequentially from end to end around the side of the middle plate. The middle plate is used to provide a ground end. The antenna module as described in any one of claims 1-12, wherein the first antenna and the second antenna are disposed on the top frame.

14. The electronic device according to claim 13, characterized in that, The electronic device also includes: The decorative element is disposed near the top frame and spaced apart from the top frame. The decorative element has a sixth power supply point and a ground point near the top frame, and the ground point is connected to the ground terminal. The sixth feed source, connected to the sixth feed point, is used to excite the decorative element to support the low-frequency band.

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