Electronic device

Abstract

The application provides an electronic device, which comprises a ground plate, a first radiation branch, a second radiation branch and a first feed unit. The ground plate comprises a first side and a second side. The first radiation branch is adjacent to and parallel to the first side, and comprises a first feed point and a grounded first ground point. The second radiation branch comprises a second feed point, and the second radiation branch and the ground plate form an asymmetric dipole antenna. The first feed unit comprises a first feed output end and a second feed output end which are connected to the first feed point and the second feed point respectively, and are used for outputting a first feed signal of a satellite communication frequency band to excite the first radiation branch to generate a first current which propagates along a direction parallel to the first side, and outputting a second feed signal of the satellite communication frequency band to excite the asymmetric dipole antenna to generate a second current which propagates along a direction parallel to the second side; and the phase difference between the first feed signal and the second feed signal of the satellite communication frequency band is 90°. The application realizes the satellite communication function through a simple structure.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more particularly to a communicable electronic device. Background Technology

[0002] Currently, with the widespread adoption of 5G communication technology, people's communication experience is improving significantly. To meet diverse communication needs, some electronic devices are equipped with satellite antennas to establish connections with satellites and achieve satellite communication. However, existing satellite antennas have relatively complex structures and are quite large in size to improve communication quality. This results in electronic devices equipped with satellite antennas being generally large, making them inconvenient to carry. Summary of the Invention

[0003] This application provides an electronic device to solve the above-mentioned problems.

[0004] In a first aspect, an electronic device is provided, including a ground plane, a first radiating stub, a second radiating stub, and a first feed unit. The ground plane includes an adjacent first side and a second side. The first radiating stub is adjacent to and parallel to the first side of the ground plane, and includes a first feed point and a first ground point, the first ground point being connected to the ground plane for grounding. The second radiating stub includes a second feed point, and is disposed adjacent to the connection position of the first and second sides of the ground plane, forming an asymmetric dipole antenna with the ground plane. The first feed unit includes a first feed output terminal and a second feed output terminal. The first feed output terminal is connected to the first feed point and is used to output a first feed signal in the satellite communication frequency band to the first feed point to excite the first radiating stub to generate a first current that conducts in a direction parallel to the first side of the ground plane. The second feed output terminal is connected to the second feed point and is used to output a second feed signal in the satellite communication frequency band to the second feed point to excite the asymmetric dipole antenna to generate a second current that conducts in a direction parallel to the second side of the ground plane. The phase difference between the first feed signal in the satellite communication frequency band and the second feed signal in the satellite communication frequency band is 90°, which makes the phase difference between the first current and the second current 90°, thereby enabling the first radiating stub and the asymmetric dipole antenna to form a circularly polarized antenna, supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band.

[0005] The electronic device of this application outputs a first feed signal and a second feed signal for the satellite communication band to the first radiating stub and the asymmetric dipole antenna respectively through the first feed unit. This excites the first radiating stub and the asymmetric dipole antenna to generate a first current and a second current respectively, which are conducted along the first and second sides of the ground plane. The phase difference between the first feed signal and the second feed signal for the satellite communication band is 90°, resulting in a 90° phase difference between the first current and the second current. This allows the first radiating stub and the asymmetric dipole antenna to form a circularly polarized antenna, supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication band. Furthermore, since the second radiating stub and the ground plane form an asymmetric dipole antenna, and since the asymmetric dipole antenna mainly radiates from the larger stub, the size of the ground plane can primarily meet the size requirements for operation in the satellite communication band, while the second radiating stub can be made very small, thereby effectively reducing space occupation. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0007] Figure 1 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device according to an embodiment of this application.

[0008] Figure 2 This is a schematic diagram of the structure of the first feed unit in one embodiment of this application.

[0009] Figure 3 This is a schematic diagram of the current distribution of electronic devices in some embodiments of this application when they are operating in the satellite communication frequency band.

[0010] Figure 4 This is a schematic diagram of the electric field distribution when the electronic device in some embodiments of this application operates in the satellite communication frequency band.

[0011] Figure 5 This is a simplified structural diagram of an electronic device in some embodiments of this application.

[0012] Figure 6 This is a schematic diagram of the structure of the first matching unit in some embodiments of this application.

[0013] Figure 7 This is another structural schematic diagram of the first matching unit in some embodiments of this application.

[0014] Figure 8This is yet another simplified structural diagram of an electronic device in some embodiments of this application.

[0015] Figure 9 This is a schematic diagram of the structure of the second matching unit in some embodiments of this application.

[0016] Figure 10 This is another structural schematic diagram of the second matching unit in some embodiments of this application.

[0017] Figure 11 This is a simplified structural diagram of a reference electronic device.

[0018] Figure 12 This is the antenna pattern of a reference electronic device.

[0019] Figure 13 This is an antenna pattern of an electronic device in some embodiments of this application.

[0020] Figure 14 This is a further schematic diagram of the structure of an electronic device in some embodiments of this application.

[0021] Figure 15 This is a schematic diagram of the current distribution and current-weak areas of the ground plane of an electronic device in some embodiments of this application.

[0022] Figure 16 This is a further structural schematic diagram of the electronic device in some embodiments of this application.

[0023] Figure 17 This is a schematic diagram of the structure of the third matching unit in some embodiments of this application.

[0024] Figure 18 The following is a schematic diagram illustrating a portion of the structure of an electronic device in some embodiments of this application.

[0025] Figure 19 This is a schematic diagram of the return loss when the electronic device described in some embodiments of this application operates in the first non-satellite communication frequency band.

[0026] Figure 20 This is a schematic diagram illustrating the overall system efficiency of the electronic device in some embodiments of this application when it operates in the first non-satellite communication frequency band.

[0027] Figure 21 This is a schematic diagram of the return loss when the electronic device described in some embodiments of this application operates in the second non-satellite communication frequency band.

[0028] Figure 22 This is a schematic diagram illustrating the overall system efficiency of the electronic device in some embodiments of this application when it operates in the second non-satellite communication frequency band.

[0029] Figure 23 This is a schematic diagram of the back of an electronic device in some embodiments of this application. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of the embodiments of this invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not imply or indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The term "connection" in this application includes physical structural connection, electrical connection, direct connection, or indirect connection, etc., and can be specifically determined according to the required connection situation. In the description of the embodiments of this invention, the terms "first," "second," "third," "fourth," etc., are not specific, but are used to distinguish objects with the same name. Where there is a specification, the objects with the same name referred to by the terms "first," "second," "third," "fourth," etc., can be the same objects.

[0032] Please see Figure 1 This is a simplified structural diagram illustrating a portion of the internal structure of an electronic device 100 according to an embodiment of this application. Figure 1As shown, the electronic device 100 includes a ground plane 1, a first radiating stub 2, a second radiating stub 3, and a first feed unit 4. The ground plane 1 includes an adjacent first side B1 and a second side B2. The first radiating stub 2 is adjacent to and parallel to the first side B1 of the ground plane 1. The first radiating stub 2 includes a first feed point F1 and a first ground point G1, and the first ground point G1 is connected to the ground plane 1 for grounding. The second radiating stub 3 includes a second feed point F2. The second radiating stub 3 is located adjacent to the connection position of the first side B1 and the second side B2 of the ground plane 1, thus forming an asymmetric dipole antenna with the ground plane 1. The first feed unit 4 includes a first feed output terminal 41 and a second feed output terminal 42. The first feed output terminal 41 is connected to the first feed point F1 and is used to output a first feed signal of the satellite communication frequency band to the first feed point F1 to excite the first radiating stub 2 to generate a first current that conducts in a direction parallel to the first side B1 of the ground plane 1. The second feed output terminal 42 is connected to the second feed point F2 and is used to output a second feed signal of the satellite communication frequency band to the second feed point F2 to excite the asymmetric dipole antenna to generate a second current that conducts in a direction parallel to the second side B2 of the ground plane 1. The phase difference between the first feed signal of the satellite communication frequency band and the phase difference between the second feed signal of the satellite communication frequency band is 90°, so that the phase difference between the first current and the second current is 90°, thereby making the first radiating stub 2 and the asymmetric dipole antenna form a circularly polarized antenna, and supporting the reception and / or transmission of electromagnetic wave signals of the satellite communication frequency band.

[0033] Therefore, in this application, the first feed unit 4 outputs the first feed signal and the second feed signal of the satellite communication band to the first radiating stub 2 and the asymmetric dipole antenna, respectively, thereby exciting the first radiating stub 2 and the asymmetric dipole antenna to generate a first current and a second current respectively, which are conducted along the direction of the first side B1 and the second side B2 of the ground plane 1. The phase difference between the first feed signal and the second feed signal of the satellite communication band is 90°, so that the phase difference between the first current and the second current is 90°. This enables the first radiating stub 2 and the asymmetric dipole antenna to form a circularly polarized antenna, thereby supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication band. Furthermore, since the second radiating stub 3 and the ground plane 1 form an asymmetric dipole antenna, and since the asymmetric dipole antenna is mainly radiated by the larger stub, the size requirement for operating in the satellite communication frequency band can be met mainly by the size of the ground plane 1, and the second radiating stub 3 can be made very small, thereby effectively reducing the space occupied.

[0034] In this application, the second radiating branch 3 being positioned adjacent to the connection points of the first side B1 and the second side B2 of the grounding plate 1 means that the second radiating branch 3 and the grounding plate 1 are spaced apart, and the distance between the connection points of the second radiating branch 3 and the first side B1 and the second side B2 of the grounding plate 1 can satisfy any distance required for coupling between the first radiating branch 2 and the grounding plate 1. For example, the distance can be less than 1 cm, etc. In some embodiments, the distance between the connection points of the second radiating branch 3 and the first side B1 and the second side B2 of the grounding plate 1 can be the distance between the portion of the second radiating branch 3 closest to the connection point of the first side B1 and the second side B2 of the grounding plate 1 and the connection point of the first side B1 and the second side B2 of the grounding plate 1.

[0035] In this application, both the first radiating branch 2 and the second radiating branch 3 are strip-shaped, and the first radiating branch 2 is approximately straight. The first radiating branch 2 is adjacent to and parallel to the first side B1 of the grounding plate 1, which means that the extension direction of the first radiating branch 2 is parallel to the first side B1 of the grounding plate 1, and the distance between the first radiating branch 2 and the first side B1 of the grounding plate 1 is less than a preset distance, such as 1 cm, etc.

[0036] Wherein, the extension direction of the first radiating branch 2 is the extension direction of the longest side of the first radiating branch 2.

[0037] Therefore, the first current generated by exciting the first radiating stub 2 is mainly a current conducted along the extension direction of the first radiating stub 2. Since the first radiating stub 2 is adjacent to and parallel to the first side B1 of the ground plane 1, the first current is conducted in a direction parallel to the first side B1 of the ground plane 1. The asymmetric dipole antenna is excited to generate a second current conducted in a direction parallel to the second side B2 of the ground plane 1. Since the adjacent first side B1 and second side B2 of the ground plane 1 are set at an angle, for example, approximately 90°, the first current and the second current will be approximately perpendicular. Since the phase difference between the first current and the second current is 90°, the formation conditions of a circularly polarized antenna are met, so that the first radiating stub 2 and the asymmetric dipole antenna form a circularly polarized antenna, thereby supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication band.

[0038] Please see Figure 2 This is a schematic diagram of the structure of the first feed unit 4 in one embodiment of this application. Figure 2As shown, the first feed unit 4 includes a first feed 401, a power divider unit 402, and a phase shifter 403. The power divider unit 402 includes an input terminal 402a and two output terminals 402b. The input terminal 402a is connected to the first feed 401. The power divider unit 402 is used to divide the satellite communication frequency band feed signal provided by the first feed 401 into a first satellite communication frequency band feed signal and a second satellite communication frequency band feed signal. The phase shifter 403 is connected between one of the first feed output terminal 41 and the second feed output terminal 42 and one of the output terminals 402b of the power divider unit 402. The other output terminal 402b of the power divider unit 402 is connected to the other of the first feed output terminal 41 and the second feed output terminal 42. The phase shifter 403 is used to adjust the phase of the first feed signal or the second feed signal of the satellite communication frequency band output by the power divider unit 402, so that the phase difference between the first feed signal of the satellite communication frequency band output by the first feed output terminal 41 of the first feed unit 4 and the second feed signal of the satellite communication frequency band output by the second feed output terminal 42 is 90°.

[0039] The power divider unit 402 is a device that can divide one input signal into two equal output signals.

[0040] Therefore, in some embodiments, the first feed unit 4 includes a first feed 401, a power divider 402, and a phase shifter 403. The power divider 402 divides the satellite communication frequency band feed signal provided by the first feed 401 into a first satellite communication frequency band feed signal and a second satellite communication frequency band feed signal. Then, the phase shifter 403 performs phase shifting processing on either the first or second satellite communication frequency band feed signal, causing one of the signals to shift by 90° while the other remains unchanged. This ensures that the phase difference between the first satellite communication frequency band feed signal output from the first feed output terminal 41 and the second satellite communication frequency band feed signal output from the second feed output terminal 42 of the first feed unit 4 is 90°.

[0041] In some embodiments, the phase shifter 403 performing phase shift processing on the first feed signal or the second feed signal of the satellite communication band may include: the phase shifter 403 shifting the phase of the first feed signal or the second feed signal of the satellite communication band by 180°. n+90°, where n=0 or is a positive integer.

[0042] in, Figure 2 Specifically, the illustration shows an example where the phase shifter 403 is connected between the first power supply output terminal 41 and one of the output terminals 402b of the power divider unit 402, and the other output terminal 402b of the power divider unit 402 is directly connected to the second power supply output terminal 42. In some embodiments, the phase shifter 403 may also be connected between the second power supply output terminal 42 and one of the output terminals 402b of the power divider unit 402, while the other output terminal 402b of the power divider unit 402 is directly connected to the first power supply output terminal 41.

[0043] In some embodiments, the power divider 402 divides the satellite communication frequency band feed signal provided by the first feed source 401 into the same first feed signal and second feed signal of the satellite communication frequency band. This means that the power divider 402 divides the satellite communication frequency band feed signal provided by the first feed source 401 into the first feed signal and second feed signal of the satellite communication frequency band with the same phase, the same frequency and the same amplitude.

[0044] In some embodiments, the power dividing unit 402 may be a power divider, a device capable of splitting one input signal into two or more identical output signals. In some embodiments, the power dividing unit 402 may also be a directional coupler, which can selectively split one input signal into two or more identical output signals.

[0045] In some embodiments, the first feed unit 4 may include two identical feeds and the phase shifter 403. The two identical feeds are used to output the same first feed signal and second feed signal for the satellite communication frequency band, respectively. The phase shifter 403 is connected between one of the first feed output terminal 41 and the second feed output terminal 42 and one of the feeds, and the other feed is connected to the other of the first feed output terminal 41 and the second feed output terminal 42. Thus, in some embodiments, by setting two feeds, the power divider unit 402 can be omitted, and the phase difference between the first feed signal for the satellite communication frequency band output by the first feed output terminal 41 and the second feed signal for the satellite communication frequency band output by the second feed output terminal 42 can still be 90°.

[0046] In some embodiments, the first feed unit 4 may include the first feed 401 and the power divider unit 402. The two output terminals 402b of the power divider unit 402 may be connected to the first power output terminal 41 and the second power output terminal 42 of the first feed unit 4 via two feed lines, respectively, and the length difference between the two feed lines may be n. λ1 / 2+λ / 4, where λ1 can be the wavelength corresponding to the satellite communication frequency band. Thus, in some embodiments, the phase difference between the first satellite communication frequency band first feed signal output by the first feed output terminal 41 of the first feed source unit 4 and the second satellite communication frequency band second feed signal output by the second feed output terminal 42 can be 90° through the length difference of the two feed lines. In this case, the phase shifter 403 can also be omitted.

[0047] Obviously, in some embodiments, the first feed unit 4 may also include other structures, which will not be listed here.

[0048] In some embodiments, the first radiating stub 2 and the asymmetric dipole antenna both operate / resonate in the satellite communication frequency band. As mentioned above, the phase difference between the first current and the second current is 90°, and the directions of the first current and the second current are approximately perpendicular. Therefore, the first radiating stub 2 and the asymmetric dipole antenna form a circularly polarized antenna, thereby supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band.

[0049] In some embodiments, the second radiating stub 3, under the excitation of the second feed signal in the satellite communication band, couples and excites the ground plane 1 to operate in the high-order mode resonant mode of the satellite communication band, thereby causing the ground plane 1 to generate a second current conducted along the second side B2 and resonate in the satellite communication band.

[0050] That is, in some embodiments, the second feed output terminal 42 is connected to the second feed point F2, and outputs a second feed signal of the satellite communication frequency band to the second feed point F2 to excite the asymmetric dipole antenna to generate a second current that is conducted in a direction parallel to the second side B2 of the ground plane 1. Specifically, the second radiating stub 3, under the excitation of the second feed signal of the satellite communication frequency band, couples and excites the ground plane 1 to operate in the high-order mode resonant mode of the satellite communication frequency band, so that the ground plane 1 generates a second current that is conducted along the second side B2.

[0051] Furthermore, for the asymmetric dipole antenna, the second radiating stub 3 mainly serves as a feed excitation device, essentially acting as a radiation drive. The second radiating stub 3 forms a capacitive coupling with the ground plane 1. The first feed unit 4 can excite the ground plane 1 via the second radiating stub 3 using a capacitive coupling element (CCE). Therefore, the second feed signal in the satellite communication frequency band output from the second feed output terminal 42 of the first feed unit 4 can couple and excite the ground plane 1 through the second radiating stub 3, causing the ground plane 1 to operate in a higher-order mode resonant mode within the satellite communication frequency band, i.e., resonating within the satellite communication frequency band.

[0052] In some embodiments, the ground plane 1 is generally rectangular, with the first side B1 being the short side of the ground plane 1 and the second side B2 being the long side of the ground plane 1. Since the second radiating stub 3 is located near the connection position of the first side B1 and the second side B2 of the ground plane 1, when the second feed output terminal 42 of the first feed unit 4 outputs the second feed signal of the satellite communication frequency band and excites the ground plane 1 through the second radiating stub 3, it will excite the ground plane 1 to generate a second current that is conducted along the long side, that is, along the second side B2.

[0053] Therefore, in some embodiments, the asymmetric dipole antenna generates a second current in a direction parallel to the second side B2 of the ground plane 1 under the excitation of the second feed signal in the satellite communication band. This second current is mainly generated by the ground plane 1 operating in the high-order mode resonant mode in the satellite communication band under the coupling excitation of the second radiating stub 3, and is conducted along the second side B2. Further, the second current generated by the asymmetric dipole antenna in a direction parallel to the second side B2 of the ground plane 1 under the excitation of the second feed signal in the satellite communication band is mainly the second current conducted along the second side B2 on the ground plane 1. Wherein, for the asymmetric dipole antenna, the resonance of the asymmetric dipole antenna in the satellite communication band mainly refers to the resonance of the ground plane 1 in the satellite communication band.

[0054] Since the second radiating branch 3 does not participate in radiation, as mentioned above, the second radiating branch 3 mainly serves as a power feeding and excitation device, which is equivalent to a radiation driving device. Therefore, the size of the second radiating branch 3 can be made very small, for example, much smaller than 1 / 4 of the wavelength corresponding to the satellite communication frequency band, for example, only 1 / 16 to 1 / 8 of the wavelength corresponding to the satellite communication frequency band, which can effectively reduce the space occupied by the electronic device 100.

[0055] In some embodiments, since the ground plane 1 is typically a component such as the mid-frame of the electronic device 100, and is relatively large, it is significantly larger than one-quarter or one-half the wavelength of the satellite communication frequency band. Therefore, the ground plane 1 is a high-order mode resonant mode operating in the satellite communication frequency band, such as a three-quarter wavelength resonant mode, and is able to operate in the satellite communication frequency band.

[0056] In this application, the size of the second radiating stub 3 is smaller than the size of the ground plane 1, forming an asymmetric dipole antenna with the ground plane 1. That is, the asymmetric dipole antenna is actually formed by the smaller second radiating stub 3 and the larger ground plane 1. The smaller size of the second radiating stub 3 compared to the ground plane 1 can mean that the length of the second radiating stub 3 is smaller than the size of the second side B2 of the ground plane 1. As mentioned above, the second radiating stub 3 is strip-shaped, and its length is the dimension along the extension direction of its longest side. Specifically, when the second radiating stub 3 is straight, its longest side is the longest straight side, and its length is the dimension of that longest straight side. When the second radiating stub 3 is bent, its longest side is the longest bent side, and its length is the dimension of that longest bent side. That is, regardless of whether the second radial branch 3 is straight or curved, the length of the second radial branch 3 is the longest extension length of the entire first radial branch 2.

[0057] Please see Figure 3 This is a schematic diagram of the current distribution of an electronic device 100 in some embodiments of this application when it operates in the satellite communication frequency band.

[0058] like Figure 3 As shown, the first feed output terminal 41 of the first feed unit 4 outputs a first feed signal of the satellite communication frequency band to the first feed point F1 of the first radiating stub 2 to excite the first radiating stub 2 to generate a first current i1 that is conducted in a direction parallel to the first side B1 of the ground plane 1. The second feed output terminal 42 outputs a second feed signal of the satellite communication frequency band to the second feed point F2 of the second radiating stub 3 to excite the asymmetric dipole antenna formed by the second radiating stub 3 and the ground plane 1 to generate a second current i2 that is conducted in a direction parallel to the second side B2 of the ground plane 1.

[0059] Among them, as mentioned above, and also as Figure 3As shown, the second current i2 is mainly distributed on the ground plane 1 and is conducted along the second side B2 of the ground plane 1, while the first current i1 is mostly distributed on the first radiating branch 2 itself.

[0060] Among them, such as Figure 1 and Figure 3 As shown, the first radiating stub 2 may include two opposing first ends 21 and second ends 22. The first grounding point G1 is located close to the first end 21, and the second end 22 is an open circuit. The first feed point F1 is located between the first grounding point G1 and the second end 22. The first radiating stub 2 roughly forms an inverted F antenna (IFA). The first radiating stub 2 resonates under the excitation of the first feed signal in the satellite communication frequency band. Therefore, a large portion of the first current i1 is distributed on the first radiating stub 2 itself.

[0061] As mentioned above, and also as Figure 3 As shown, the first current i1 generated by exciting the first radiating stub 2 is mainly a current conducted along the extension direction of the first radiating stub 2. Since the first radiating stub 2 is adjacent to and parallel to the first side B1 of the ground plane 1, the first current i1 is conducted in a direction parallel to the first side B1 of the ground plane 1. The asymmetric dipole antenna is excited to generate a second current i2 conducted in a direction parallel to the second side B2 of the ground plane 1, that is, mainly distributed on the ground plane 1 and conducted along the second side B2 of the ground plane 1. Since the adjacent first side B1 and second side B2 of the ground plane 1 are set at an angle, for example, approximately 90°, the first current and the second current will be approximately perpendicular. Since the phase difference between the first current and the second current is 90°, the formation conditions of a circularly polarized antenna are met, so that the first radiating stub 2 and the asymmetric dipole antenna form a circularly polarized antenna, supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication band.

[0062] Among them, such as Figure 3 As shown, the ground plane 1 operates in a high-order mode resonant mode, such as a three-quarter wavelength resonant mode, in the satellite communication frequency band. Therefore, the second current i2 conducted along the second side B2 on the ground plane 1 will have a small portion reversed, which is consistent with the current distribution of the high-order resonant mode.

[0063] In some embodiments, such as Figure 3As shown, the first grounding point G1 of the first radiating branch 2 is connected to the first side B1 of the grounding plate 1, which also excites the grounding plate 1 to generate a first current i1 conducted along the first side B1. This also increases the radiated energy through the grounding plate 1, thereby improving the radiation performance in the satellite communication frequency band. For example, Figure 3 As shown, the second radiating stub 3 will also generate a portion of the second current i2. However, as mentioned earlier, the second radiating stub 3 is smaller in size, so the current will be smaller. The second current of the asymmetric dipole antenna is mainly the second current i2 conducted along the second side B2 on the ground plane 1.

[0064] In some embodiments, the ground plane 1 operating in the higher-order mode resonant mode of the satellite communication frequency band may refer to the equivalent electrical length of the ground plane 1 itself satisfying the higher-order mode operation in the satellite communication frequency band. In some embodiments, the ground plane 1 operating in the higher-order mode resonant mode of the satellite communication frequency band may also be a higher-order mode resonant mode operating in the satellite communication frequency band with the cooperation of a matching unit.

[0065] Please see Figure 4 This is a schematic diagram of the electric field distribution when the electronic device 100 in some embodiments of this application operates in the satellite communication frequency band.

[0066] When the first radiating branch 2 generates a first current in a direction parallel to the first side B1 of the ground plane 1 under the excitation of the first feed signal of the satellite communication band, it also generates a first electric field E1 with the direction of electric field pointing from the first side B1 of the ground plane 1 to the first radiating branch 2.

[0067] like Figure 1 as well as Figures 3-4 As shown, in some embodiments, the second radiating stub 3 is positioned near the connection point of the first side B1 and the second side B2 of the ground plane 1, and the second radiating stub 3 includes a portion adjacent to and parallel to the first side B1 of the ground plane 1, and a portion adjacent to and parallel to the second side B2 of the ground plane 1. When the asymmetric dipole antenna generates a second current i2 conducted in a direction parallel to the second side B2 of the ground plane 1 under the excitation of the second feed signal of the satellite communication band (i.e., primarily the second current i2 conducted along the second side B2 on the ground plane 1 as described above), it also generates a second electric field E2 with the electric field direction pointing from the second side B2 of the ground plane 1 to the portion of the second radiating stub 3 parallel to the second side B2.

[0068] The electric field direction of the first electric field E1 is from the first side B1 of the ground plane 1 to the first radiating stub 2, that is, approximately perpendicular to the first side B1. The electric field direction of the second electric field E2 is from the second side B2 of the ground plane 1 to the portion of the second radiating stub 3 parallel to the second side B2, also approximately perpendicular to the second side B2. Since the adjacent first sides B1 and B2 of the ground plane 1 are set at an angle, for example, approximately 90°, the electric field directions of the first electric field E1 and the second electric field E2 are also perpendicular to each other. Therefore, from the perspective of electric field distribution, the first radiating stub 2 and the asymmetric dipole antenna exhibit vertical polarization. At this time, the first radiating stub 2 and the asymmetric dipole antenna can have circularly polarized radiation characteristics, thus forming a circularly polarized antenna.

[0069] Among them, such as Figure 1 , Figure 3 and Figure 4 As shown, the second radial branch 3 includes a first radial sub-branch 31 and a second radial sub-branch 32. The first radial sub-branch 31 and the second radial sub-branch 32 are connected at an angle. The portion of the second radial branch 3 that is adjacent to and parallel to the first side B1 of the grounding plate 1 is the first radial sub-branch 31, and the portion of the second radial branch 3 that is adjacent to and parallel to the second side B2 of the grounding plate 1 is the second radial sub-branch 32.

[0070] Please see Figure 5 This is a simplified structural diagram of the electronic device 100 in some embodiments of this application. Figure 5 As shown, the electronic device 100 further includes a first matching unit M1, which is connected between the second power supply output terminal 42 and the second power supply point F2 to achieve impedance matching of the satellite communication frequency band, so that the ground plane 1 operates in the high-order mode resonant mode of the satellite communication frequency band with the cooperation of the first matching unit M1.

[0071] That is, in some embodiments, the first matching unit M1 can specifically be used to achieve impedance matching adjustment, thereby achieving the impedance matching required for the satellite communication frequency band. When impedance matching is achieved, the radiation efficiency is the highest. Therefore, the ground plane 1 can work in the high-order mode resonance mode of the satellite communication frequency band with the cooperation of the first matching unit M1, and resonate better in the satellite communication frequency band.

[0072] The first matching unit M1 may include a capacitor and / or an inductor to achieve corresponding impedance matching.

[0073] Please see Figure 6 This is a schematic diagram of the structure of the first matching unit M1 in some embodiments of this application. For example... Figure 6 As shown, the first matching unit M1 includes a first inductor L1 and a first capacitor C1. The first capacitor C1 is connected between the second power supply output terminal 42 and the second power supply point F2. The first inductor L1 is connected between the end of the first capacitor C1 connected to the second power supply output terminal 42 and ground, that is, between the second power supply output terminal 42 and ground.

[0074] The values ​​of the first inductor L1 and the first capacitor C1 can be obtained in advance through simulation tests, etc., to enable the ground plane 1 to work in the satellite communication frequency band and achieve impedance matching.

[0075] in, Figure 6 This is just one example. The first matching unit M1 may also include other structures, such as inductors and capacitors connected in parallel, or inductors and capacitors connected in series, or inductors and capacitors connected in parallel and then connected in series with an inductor or capacitor, or a series branch of capacitors and inductors connected in series and then connected in parallel with a capacitor or / or inductor, and so on.

[0076] In some embodiments, the first matching unit M1 is an adjustable matching unit used to achieve impedance matching of different satellite communication frequency bands, so that the ground plane 1 works in the higher-order mode resonant mode of different satellite communication frequency bands with the cooperation of the first matching unit M1, and resonates in different satellite communication frequency bands.

[0077] That is, in some embodiments, since the ground plane 1 and the second radiating stub 3 form an asymmetric dipole antenna, when the first matching unit M1 is an adjustable matching unit, the impedance matching required for different satellite communication frequency bands can be achieved by changing its own matching parameter value. The frequency intervals of the various satellite communication frequency bands are not large; in fact, the equivalent electrical length of the ground plane 1 can roughly meet the requirements of high-order mode resonant modes operating in multiple satellite communication frequency bands, such as three-quarter wavelength resonant modes. When the first matching unit M1 is an adjustable matching unit, changing its own matching parameter value to achieve the impedance matching required for different satellite communication frequency bands allows for better resonance in different satellite communication frequency bands. That is, the peak radiation efficiency is located at the resonant frequency point of different satellite communication frequency bands, which is equivalent to achieving switching between different satellite communication frequency bands.

[0078] Please see Figure 7 This is another structural schematic diagram of the first matching unit M1 in some embodiments of this application. In some embodiments, when the first matching unit M1 is an adjustable matching unit, such as... Figure 7 As shown, the first matching unit M1 includes the first inductor L1 and a plurality of first capacitors C1, and also includes a single-pole multi-throw switch S1.

[0079] like Figure 7 As shown, the plurality of first capacitors C1 are connected in parallel between the second feed point F2 and the single-pole multi-throw switch S1. That is, the plurality of first capacitors C1 are connected in parallel, and the plurality of first capacitors C1 are connected as a whole between the second feed point F2 and the single-pole multi-throw switch S1. The single-pole multi-throw switch S1 is also connected to the second feed output terminal 42 of the first feed unit 4.

[0080] The multiple first capacitors C1 have different capacitance values. The single-pole multi-throw switch S1 can selectively establish connections between different first capacitors C1 and the second power output terminal 42 of the first feed unit 4, resulting in different overall matching parameter values ​​for the first matching unit M1, thus achieving different impedance matching. Therefore, the first matching unit M1 can achieve the impedance matching required for different satellite communication frequency bands by changing its own matching parameter values.

[0081] Specifically, such as Figure 7 As shown, the single-pole multi-throw switch S1 includes a fixed terminal P1 and multiple free terminals P2. Each first capacitor is connected between the second feed point F2 and a corresponding free terminal P2. The fixed terminal P1 is connected to the second feed output terminal 42 and the far-ground terminal of the first inductor L1. The single-pole multi-throw switch S1 can selectively establish a connection between the fixed terminal P1 and different free terminals P2, and establish a connection between different first capacitors C1 and the second feed output terminal 42 of the first feed unit 4.

[0082] in, Figure 7 The example provided uses four first capacitors C1 and the single-pole multi-throw switch S1 as an example of a single-pole four-throw switch. Obviously, the multiple first capacitors C1 can be any other number, and the single-pole multi-throw switch S1 can be a single-pole multi-throw switch with a corresponding number of free terminals P2.

[0083] In some embodiments, the equivalent electrical length of the first radiating stub 2 is λ1 / 4, where λ1 is the wavelength corresponding to the satellite communication frequency band. The first radiating stub 2 operates in the 1 / 4 wavelength resonant mode of the satellite communication frequency band under the excitation of the first feed signal of the satellite communication frequency band, and resonates in the satellite communication frequency band.

[0084] That is, in some embodiments, as described above, the first radiating stub 2 generally forms an inverted F antenna, and the equivalent electrical length of the first radiating stub 2 is λ1 / 4, where λ1 is the wavelength corresponding to the satellite communication frequency band. Therefore, the first radiating stub 2 can operate in the 1 / 4 wavelength resonant mode of the satellite communication frequency band under the excitation of the first feed signal of the satellite communication frequency band, and resonate in the satellite communication frequency band.

[0085] Therefore, as mentioned above, both the first radiating stub 2 and the asymmetric dipole antenna resonate / operate in the satellite communication frequency band. Since the phase difference between the first current and the second current is 90° and the directions of the first current and the second current are approximately perpendicular, the first radiating stub 2 and the asymmetric dipole antenna form a circularly polarized antenna, thereby supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band.

[0086] In some embodiments, the equivalent electrical length of the first radiating branch 2 can be the equivalent electrical length of the first radiating branch 2 itself, for example, it can be approximately equal to the length of the first radiating branch 2. For example, Figure 1 , Figure 3 As shown in the figure, the first radiating branch 2 is strip-shaped, and its equivalent electrical length can be the equivalent electrical length of the first radiating branch 2 itself, and is equal to the length of the first radiating branch 2. In some embodiments, when the first radiating branch 2 is also connected to a matching unit for implementing matching adjustment, the equivalent electrical length of the first radiating branch 2 can also be the equivalent electrical length under the cooperation of the connected matching unit.

[0087] Please see Figure 8 This is a further simplified structural diagram of the electronic device 100 in some embodiments of this application. Figure 8 As shown, the electronic device further includes a second matching unit M2, which is connected between the first power supply output terminal 41 and the first power supply point F1. The equivalent electrical length of the first radiating branch 2 under the cooperation of the second matching unit M2 is λ1 / 4.

[0088] That is, in some embodiments, the equivalent electrical length of the first radiating branch 2 under the cooperation of the second matching unit M2 can be λ1 / 4, so that the size of the first radiating branch 2 can be designed more flexibly, without needing its own equivalent electrical length to be fixed to the required equivalent electrical length, but the equivalent electrical length under the cooperation of the second matching unit M2 can meet the requirements.

[0089] The second matching unit M2 may also include a capacitor and / or an inductor to achieve corresponding matching adjustment.

[0090] Please see Figure 9 This is a schematic diagram of the structure of the second matching unit M2 in some embodiments of this application. For example... Figure 9 As shown, the second matching unit M2 includes a second inductor L2 and a second capacitor C2, wherein the second capacitor C2 is connected between the first power supply output terminal 41 and the first power supply point F1, and the second inductor L2 is connected between the end of the second capacitor C2 connected to the first power supply output terminal 41 and ground.

[0091] The values ​​of the second inductor L2 and the second capacitor C2 can be obtained in advance through simulation tests, etc., so that the equivalent electrical length of the first radiating branch 2 in cooperation with the second matching unit M2 is λ1 / 4.

[0092] in, Figure 9 This is just one example. The second matching unit M2 may also include other structures, such as inductors and capacitors in parallel, or inductors and capacitors in series, or inductors and capacitors in parallel and then in series with an inductor or capacitor, or a series branch of capacitors and inductors in series and then in parallel with a capacitor or / or inductor, and so on.

[0093] In some embodiments, the second matching unit M2 is an adjustable matching unit, and the equivalent electrical length of the first radiating stub 2 can be changed with the cooperation of the second matching unit M2, so that the first radiating stub 2 can resonate / operate in different satellite communication frequency bands.

[0094] That is, as mentioned above, the equivalent electrical length of the first radiating stub 2 in cooperation with the second matching unit M2 is λ1 / 4, where λ1 is the wavelength corresponding to a satellite communication frequency band, and n is 0 or a positive integer, thus it can operate in the satellite communication frequency band. When the equivalent electrical length of the first radiating stub 2 in cooperation with the second matching unit M2 is λ1 / 4, where λ1 corresponds to the wavelength of another satellite communication frequency band, it operates in that other satellite communication frequency band.

[0095] Please see Figure 10This is another structural schematic diagram of the second matching unit M2 in some embodiments of this application. In some embodiments, when the second matching unit M2 is an adjustable matching unit, the second matching unit M2 includes a second inductor L2 and a second capacitor C2, and also includes a plurality of matching branches M21 connected in parallel between the first feed point F1 and ground. The second capacitor C2 is connected between the first feed output terminal 41 and the first feed point F1, and the second inductor L2 is connected between the end of the second capacitor C2 connected to the first feed output terminal 41 and ground. Each matching branch M21 includes a matching element M22 and a matching switch SW1 connected in series.

[0096] Therefore, the matching parameter values ​​of the matching element M22 of each matching branch M21 are different, or further, the combined matching parameter values ​​of the matching elements M22 of different combinations of matching branches M21 are different. Thus, by turning on different matching switches SW1, or by turning on different combinations of matching switches SW1, the overall matching parameter values ​​of the second matching unit M2 can be different, thereby achieving different matching adjustments, and making the equivalent electrical length of the first radiating branch 2 change with the cooperation of the second matching unit M2.

[0097] The combined matching parameter value of the matching element M22 of each matching branch M21 refers to the parallel value of the matching parameter values ​​of the matching elements M22 included in any two or more matching branches M21.

[0098] in, Figure 10 The example shown uses four matching branches M21 connected in parallel between the first power supply point F1 and ground. Obviously, in other embodiments, there may be other numbers of matching branches M21 connected in parallel between the first power supply output terminal 41 and ground. For example, there may be three matching branches M21 connected in parallel between the first power supply output terminal 41 and ground, five matching branches M21 connected in parallel between the first power supply output terminal 41 and ground, etc.

[0099] In some embodiments, the plurality of matching branches M21 connected in parallel between the first feed point F1 and ground can also be replaced by a plurality of matching elements M22 and a single-pole multi-throw switch. That is, the plurality of matching elements M22 can be connected in parallel between the first feed point F1 and the single-pole multi-throw switch. The single-pole multi-throw switch is also connected to ground. The single-pole multi-throw switch can selectively establish different connections between the matching elements M22 and ground, thereby making the overall matching parameter values ​​of the second matching unit M2 different.

[0100] In some embodiments, such as Figure 10As stated above, all matching elements M22 are inductors, and the matching parameter value of each matching element M22 can specifically be an inductance value. Obviously, in some embodiments, all of the multiple matching elements M22 can also be capacitors, or a combination of capacitors and inductors.

[0101] Therefore, the electronic device 100 of this application, through the above structure, enables the asymmetric dipole antenna formed by the second radiating stub 3 and the ground plane 1 and the first radiating stub 2 to form a circularly polarized antenna, thereby supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band.

[0102] Please see Figure 11 This is a simplified structural diagram of a reference electronic device 100'. Wherein, as... Figure 11 As shown, the reference electronic device 100' includes a ground plane 1', a radiating branch 2', and a feed source 3', wherein the radiating branch 2' includes a grounding point G1' and a power supply point F1', and the feed source 3' is connected to the power supply point F1'.

[0103] Among them, such as Figure 11 As shown, the ground plane 1' includes an adjacent first side B1' and a second side B2', and the radiating stub 2' is adjacent to and parallel to the first side B1' of the ground plane 1'. The radiating stub 2' may include two opposing first ends 21' and second ends 22'. The grounding point G1' is located near the first end 21' and connected to the first side B1' of the ground plane 1' for grounding. The second end 22' is an open circuit end. The feed point F1' is located between the grounding point G1' and the second end 22'. The radiating stub 2' generally forms an inverted F antenna (IFA).

[0104] The feed source 3' is connected to the feed point F1' and is used to output satellite frequency band feed signals to the feed point F1', thereby exciting the radiating branch 2' to operate in the satellite communication frequency band.

[0105] The equivalent electrical length of the radiating stub 2' can be λ1 / 4, where λ1 is the wavelength corresponding to the satellite communication frequency band. Therefore, the radiating stub 2' can operate in the 1 / 4 wavelength resonant mode of the satellite communication frequency band under the excitation of the first feed signal of the satellite communication frequency band, and resonate in the satellite communication frequency band.

[0106] That is, the reference electronic device 100' may only include the first radiating branch 2 and the corresponding feed source in the electronic device 100 of this application.

[0107] Please see Figure 12 , is the antenna pattern of a reference electronic device 100'. Figure 12Can be Figure 11 The antenna pattern shown is obtained from a simulation test when the reference electronic device 100' is operating in the satellite communication frequency band.

[0108] in, Figure 12 The darkest part of the antenna pattern shown is the main radiation direction R1, which has the highest radiant energy, also known as the beam direction.

[0109] in, Figure 11 as well as Figure 12 All are schematic diagrams viewed from the rear side of the reference electronic device 100', that is, schematic diagrams viewed from the side of the reference electronic device 100' opposite to the display screen. Figure 12 It can be seen that the main radiation direction R1 of the satellite communication frequency band is towards the back side of the reference electronic device 100', and is biased towards the side of the radiating branch 2'. In some embodiments, the radiating branch 2' is disposed at the top of the reference electronic device 100', and the top is the end opposite to the bottom end where the USB interface is disposed.

[0110] Among them, Figure 12 The upper right corner also shows a gain scale, with the arrow pointing to the scale value, which is the circular polarization system gain of the reference electronic device 100' when operating in the satellite communication frequency band. For example... Figure 12 As shown, the circular polarization system gain of the reference electronic device 100' when operating in the satellite communication frequency band is -1.68 dBi.

[0111] Therefore, when the reference electronic device 100' only includes the radiating stub 2', even if the radiating stub 2' can operate in the 1 / 4 wavelength resonant mode of the satellite communication frequency band under the excitation of the first feed signal of the satellite communication frequency band, and resonates in the satellite communication frequency band, the circular polarization system gain is low, making it difficult to meet the circular polarization system gain required for satellite communication. This results in the antenna performance of the satellite communication frequency band being difficult to meet the requirements, leading to poor satellite communication performance.

[0112] Please see Figure 13 This is an antenna pattern of an electronic device 100 in some embodiments of this application. Figure 13 The antenna pattern can be obtained by simulation testing when the electronic device 100 in any of the foregoing embodiments is operating in the satellite communication frequency band.

[0113] in, Figure 13 The darkest part of the antenna pattern shown is the main radiation direction R1, which has the highest radiant energy, also known as the beam direction.

[0114] Among them, the aforementioned Figure 1 , Figures 3-5 , Figure 8 And other diagrams Figure 13 All of these are schematic diagrams viewed from the rear side of the electronic device 100, that is, schematic diagrams viewed from the side of the electronic device 100 away from the display screen. Figure 13 It can be seen that the main radiation direction R1 of the satellite communication frequency band is towards the back side of the electronic device 100, and is biased towards the first radiating branch 2. In some embodiments, the first radiating branch 2 is disposed at the top of the electronic device 100, and the top is the end opposite to the bottom end where the USB interface is disposed.

[0115] Therefore, when a user holds the electronic device 100 normally for satellite communication, for example, when the front of the electronic device 100, that is, the side of the display screen, is close to the ear for satellite communication, the main radiation direction R1 of the satellite communication frequency band generally points upward, thus ensuring satellite communication performance.

[0116] Among them, such as Figure 13 As shown, the circular polarization system gain of the electronic device 100 when operating in the satellite communication frequency band is 2.15 dBi, which is 3.7 dBi higher than the scheme in which the reference electronic device 100 only includes the first radiating branch 2.

[0117] Therefore, the electronic device 100 of this application, through the above structure, enables the asymmetric dipole antenna formed by the second radiating stub 3 and the ground plane 1 and the first radiating stub 2 to form a circularly polarized antenna. The gain of the circularly polarized system is significantly improved, which effectively enhances the antenna performance of the satellite communication band and can effectively support the reception and / or transmission of electromagnetic wave signals in the satellite communication band.

[0118] Please see Figure 14 This is a further structural schematic diagram of the electronic device 100 in some embodiments of this application. In some embodiments, such as Figure 14 As shown, the electronic device 100 also includes a power supply switch K1, which is connected between the second power supply output terminal 42 and the second power supply point F2. The power supply switch K1 is turned on when the asymmetric dipole antenna is operating in the satellite communication frequency band and turned off when the asymmetric dipole antenna is operating in a non-satellite communication frequency band.

[0119] That is, in some embodiments, the electronic device 100 may further include the feed switch K1, which is turned on when the asymmetric dipole antenna is operating in the satellite communication frequency band, allowing the second feed signal of the satellite communication frequency band output by the second feed output terminal 42 to be fed into the second radiating stub 3, thereby exciting the asymmetric dipole antenna to generate the second current and resonate in the satellite communication frequency band. The feed switch K1 is also turned off when the asymmetric dipole antenna is operating in a non-satellite communication frequency band, allowing the asymmetric dipole antenna to be multiplexed in a non-satellite communication frequency band and to operate in a non-satellite communication frequency band.

[0120] In this application, the power supply switch K1 is turned on when the asymmetric dipole antenna is operating in the satellite communication frequency band and turned off when the asymmetric dipole antenna is operating in a non-satellite communication frequency band. It can also be understood that the power supply switch K1 is turned on when the asymmetric dipole antenna needs to operate in the satellite communication frequency band and turned off when the asymmetric dipole antenna needs to operate in a non-satellite communication frequency band.

[0121] In some embodiments, such as Figure 14 As shown, the electronic device 100 further includes a second feed unit 5, which includes a third feed output terminal 51. The third feed output terminal 51 is connected to the second feed point F2 of the second radiating stub 3. When the feed switch K1 is open, the second feed unit 5 outputs a first non-satellite communication frequency band feed signal to the second radiating stub 3 through the third feed output terminal 51 to excite the asymmetric dipole antenna to support the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

[0122] That is, in some embodiments, when the power supply switch K1 is open, the second power supply signal of the satellite communication band output by the second power supply output terminal 42 cannot be fed into the second radiating stub 3. At this time, the second feed unit 5 can output the first non-satellite communication band power supply signal to the second feed point F2 of the second radiating stub 3 through the third power supply output terminal 51, thereby exciting the asymmetric dipole antenna to work in the first non-satellite communication band and supporting the transmission and reception of electromagnetic wave signals in the first non-satellite communication band.

[0123] In some embodiments, the first non-satellite communication frequency band is lower than the aforementioned satellite communication frequency band. When the asymmetric dipole antenna operates in the first non-satellite communication frequency band, the second radiating stub 3 is coupled with the ground plane 1 to form a 1 / 2 wavelength asymmetric dipole antenna. Under the excitation of the feed signal of the first non-satellite communication frequency band, the second radiating stub 3 couples and excites the ground plane 1 to operate in the 1 / 2 wavelength resonant mode of the first non-satellite communication frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

[0124] in, Figure 14 The diagram also illustrates the first matching unit M1 and the second matching unit M2. When the electronic device 100 further includes the matching unit M1, the power supply switch K1 can be connected between the first matching unit M1 and the second power supply point F2 of the second radiating branch 3.

[0125] In some embodiments, the first non-satellite communication frequency band being lower than the aforementioned satellite communication frequency band may mean that the maximum value of the frequency range corresponding to the first non-satellite communication frequency band is less than the minimum value of the frequency range corresponding to the satellite communication frequency band.

[0126] As mentioned above, in some embodiments, since the ground plane 1 is typically a component such as the mid-frame of the electronic device 100, and its size is relatively large, significantly larger than one-quarter or one-half of the wavelength of the satellite communication frequency band, the ground plane 1 operates in a higher-order mode resonant mode within the satellite communication frequency band, such as a three-quarter wavelength resonant mode, and is thus able to operate within the satellite communication frequency band. Since the first non-satellite communication frequency band is lower than the aforementioned satellite communication frequency band, the size of the ground plane 1 can approximately satisfy the fundamental mode resonating in the first non-satellite communication frequency band, for example, operating in a half-wavelength resonant mode within the first non-satellite communication frequency band, thus supporting the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

[0127] In some embodiments, the equivalent electrical length of the ground plane 1 is nλ0+λ0 / 2, where λ0 is the wavelength corresponding to the first non-satellite communication frequency band, and n is 0 or a positive integer.

[0128] That is, in some embodiments, as mentioned above, the ground plane 1 is relatively large and is mainly used for radiation. Therefore, when the equivalent electrical length of the ground plane 1 is nλ0+λ0 / 2, where λ0 is the wavelength corresponding to the first non-satellite communication frequency band and n is 0 or a positive integer, the asymmetric dipole antenna can operate in the 1 / 2 wavelength mode of the first non-satellite communication frequency band.

[0129] Thus, in some embodiments, the size of the ground plane 1 can meet the requirements of the fundamental mode operating at a lower frequency in the first non-satellite communication band, while the higher frequency satellite communication band operates in a higher-order mode resonant mode, thereby simultaneously supporting the first non-satellite communication band and the satellite communication band.

[0130] As mentioned above, for the asymmetric dipole antenna, the second radiating stub 3 mainly serves as a feed excitation device, that is, equivalent to a radiation driving device. The second radiating stub 3 forms a capacitive coupling with the first side B1 of the ground plane 1. The first feed unit 4 can excite the ground plane 1 via the second radiating stub 3 using a capacitive coupling element (CCE). Therefore, since the equivalent electrical length of the ground plane 1 is nλ0 + λ0 / 2, where λ0 is the wavelength corresponding to the first non-satellite communication frequency band, the first non-satellite communication frequency band output by the third feed output terminal 51 of the second feed unit 5 can couple and excite the ground plane 1 through the second radiating stub 3, causing the ground plane 1 to operate in half-wavelength mode of the first non-satellite communication frequency band, that is, resonate in the first non-satellite communication frequency band.

[0131] As mentioned above, and also as Figure 1 As shown in the figure, in some embodiments, the ground plane 1 is approximately rectangular, with the first side B1 being the short side and the second side B2 being the long side. Since the second radiating stub 3 is positioned adjacent to the connection point of the first side B1 and the second side B2 of the ground plane 1, when the first non-satellite communication frequency band feed signal output from the third feed output terminal 51 of the second feed unit 5 is coupled through the second radiating stub 3 to excite the ground plane 1, it will excite the ground plane 1 to generate a third current conducted along its long side, i.e., the second side B2. The length of the third current conduction is the equivalent electrical length. Since it is mainly conducted along the second side B2 (which is the long side), the equivalent electrical length of the ground plane 1 is the equivalent electrical length of the second side B2 of the ground plane 1.

[0132] Therefore, in some embodiments, by setting the equivalent electrical length of the second side B2 of the ground plane 1 to approximately equal to nλ0 + λ0 / 2, where λ0 is the wavelength corresponding to the first non-satellite communication frequency band and n is 0 or a positive integer, the ground plane 1 can operate in 1 / 2 wavelength resonant mode under the excitation of the first non-satellite communication frequency band output by the third feed output terminal 51 of the second feed unit 5, thereby supporting the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

[0133] In some embodiments, the equivalent electrical length of the ground plane 1 may be the equivalent electrical length of the ground plane 1 itself, for example, it may be approximately equal to the physical length of the second side B2 of the ground plane 1.

[0134] In some embodiments, the third current generated by the ground plane 1 and conducted along the second side B2 is also the characteristic mode current, specifically the longitudinal characteristic mode current conducted along the second side B2.

[0135] Please see Figure 15 This is a schematic diagram of the current distribution and current weakness areas of the ground plane 1 of the electronic device 100 in some embodiments of this application.

[0136] Among them, such as Figure 1 as well as Figure 15 As shown in the figure, the grounding plate 1 is rectangular, with the first side B1 being the short side and the second side B2 being the long side, wherein, as... Figure 15 As shown, the grounding plate 1 also includes a third side B3 opposite to the first side B1 and a fourth side B4 opposite to the second side B2, wherein the third side B3 is a short side and the fourth side B4 is a long side.

[0137] Wherein, since the second radial branch 3 is located near the connection position of the first side B1 and the second side B2 of the grounding plate 1, and is adjacent to the first side B1 which is the shorter side, therefore, as Figure 15 As shown, when the first non-satellite communication frequency band feed signal output by the third feed output terminal 51 of the second feed unit 5 is coupled to excite the ground plane 1 through the second radiating stub 3, it will couple and excite the ground plane 1 to generate a third current i3 from the first side B1, which is the short side adjacent to the second radiating stub 3, to the third side B3, which is the other short side. That is, it excites the ground plane 1 to generate a third current i3 conducted along the second side B2, which is the long side.

[0138] like Figure 15 As shown, in some embodiments, the orthographic projection of the second feed point F2 on the ground plane 1 is located in the current weakness region Q1 of the characteristic mode current of the ground plane 1, wherein the current weakness region Q1 is located in a region with the intersection of the extensions of the adjacent first side B1 and the second side B2 as the center and 1 / 16 of the wavelength of the first non-satellite communication frequency band as the radius.

[0139] In some embodiments, adjacent first sides B1 and second sides B2 are connected by a circular arc transition; therefore... Figure 15The diagram illustrates the connection between the first side B1 and the second side B2 as an arc. The center O is the intersection of the extension of the first side B1 and the extension of the second side B2, and the center O is located outside the first side B1 and the second side B2. In some embodiments, when adjacent first sides B1 and second sides B2 are directly perpendicularly connected, that is, when the connection between adjacent first sides B1 and second sides B2 is a right angle, the intersection of the extension of the first side B1 and the extension of the second side B2 is the intersection of the first side B1 and the second side B2, that is, the center O will be located on the first side B1 and the second side B2.

[0140] The orthographic projection of the second feed point F2 on the ground plane 1 is located within the current weakness region Q1, specifically within a circular region centered at the intersection point and with a radius of 1 / 16 of the wavelength of the first non-satellite communication frequency band. Therefore, the current weakness region Q1, where the orthographic projection of the second feed point F2 on the ground plane 1 is located, is fan-shaped or similar to a fan.

[0141] When the current-weak region Q1 is selected as a region with the intersection of the extensions of the adjacent first side B1 and the second side B2 as the center O and the radius R as 1 / 16 of the wavelength of the first non-satellite communication frequency band, since the current in the region is relatively weak, by setting the positions of the second radiating stub 3 and the second feed point F2 so that the orthographic projection of the second feed point F2 on the ground plane 1 is set in the current-weak region Q1, the current along the same extension direction of the second side B2 (which is the longer side) can be better excited, so that the asymmetric dipole antenna has a higher radiation efficiency in the first non-satellite communication frequency band.

[0142] Similarly, since the second radiating stub 3 mainly serves as a power supply excitation device, that is, equivalent to a radiating drive device, the size of the second radiating stub 3 can be much smaller than the size required to operate in the first non-satellite communication frequency band, thereby effectively reducing the space occupied by the electronic device 100. For example, it can be smaller than 1 / 10, 1 / 12, etc. of the wavelength corresponding to the first non-satellite communication frequency band.

[0143] Since the first non-satellite communication frequency band is lower than the aforementioned satellite communication frequency band, when the current weakness region Q1 is selected as a region with the intersection of the extensions of the adjacent first side B1 and the second side B2 as the center O and 1 / 16 of the wavelength of the first non-satellite communication frequency band as the radius R, the current weakness region Q1 also includes a region with the intersection of the extensions of the adjacent first side B1 and the second side B2 as the center O and 1 / 16 of the wavelength of the satellite communication frequency band as the radius R. This also allows the asymmetric dipole antenna to better excite the current along the same extension direction of the second side B2 (which is the longer side) when operating in the satellite communication frequency band, so that the asymmetric dipole antenna also has high radiation efficiency in the satellite communication frequency band.

[0144] Please see Figure 16 This is a further structural schematic diagram of the electronic device 100 in some embodiments of this application. In some embodiments, such as Figure 16 As shown, the electronic device also includes a third matching unit M3, which is connected between the third feed output terminal 51 of the second feed unit 5 and the second feed point F2 of the second radiating branch 3 to achieve impedance matching of the first non-satellite communication frequency band. The ground plane 1 operates in the 1 / 2 wavelength resonant mode of the first non-satellite communication frequency band with the cooperation of the third matching unit M3.

[0145] That is, in some embodiments, the third matching unit M3 can specifically be used to achieve impedance matching adjustment, thereby achieving the impedance matching required for the satellite communication frequency band. When impedance matching is achieved, the radiation efficiency is the highest. Therefore, the ground plane 1 can work in the 1 / 2 wavelength resonant mode of the first non-satellite communication frequency band with the cooperation of the third matching unit M3, and resonate better in the first non-satellite communication frequency band.

[0146] The third matching unit M3 may also include a capacitor and / or an inductor to achieve corresponding impedance matching.

[0147] In some embodiments, the first non-satellite communication frequency band is a low-frequency band, the low-frequency band includes multiple sub-frequency bands, and the third matching unit M3 is an adjustable matching unit used to achieve impedance matching of different sub-frequency bands in the low-frequency band, so that the ground plane 1 operates in the 1 / 2 wavelength resonant mode of different sub-frequency bands in the low-frequency band with the cooperation of the third matching unit M3.

[0148] That is, in some embodiments, the first non-satellite communication frequency band is a low-frequency band, which includes multiple sub-frequency bands. Since the third matching unit M3 is an adjustable matching unit, the ground plane 1 can operate in the 1 / 2 wavelength resonant mode of the corresponding sub-frequency band under the cooperation of the third matching unit M3 and the equivalent electrical length, thereby supporting multiple sub-frequency bands in the low-frequency band and thus supporting the low-frequency band.

[0149] As mentioned above, the third matching unit M3 is specifically used to achieve impedance matching adjustment. Since the ground plane 1 and the second radiating stub 3 form an asymmetric dipole antenna, when the third matching unit M3 is an adjustable matching unit, the impedance matching required for different sub-bands in the low-frequency band can be achieved by changing its matching parameter values. The equivalent electrical length of the ground plane 1 is nλ0 + λ0 / 2, where λ0 is the wavelength corresponding to the low-frequency band, and specifically, it can be the wavelength corresponding to any sub-band in the low-frequency band, or the wavelength corresponding to any frequency point in the low-frequency band, for example, the wavelength corresponding to the most central frequency of the entire low-frequency band. Since the resonant frequencies of each sub-band in the low-frequency band are relatively close, the equivalent electrical length of the ground plane 1, nλ0 + λ0 / 2, can still meet the resonance requirements of each sub-band in the low-frequency band. As mentioned above, when the third matching unit M3 is an adjustable matching unit, it can achieve the impedance matching required for different sub-frequency bands under the low frequency band by changing its own matching parameter value, so as to achieve better resonance in different sub-frequency bands, that is, to make the peak of radiation efficiency located at the resonant frequency point of different sub-frequency bands, and thus actually realize the switching of different sub-frequency bands under the low frequency band.

[0150] Please see Figure 17 This is a schematic diagram of the structure of the third matching unit M3 in some embodiments of this application. For example... Figure 17 As shown, the third matching unit M3 includes multiple matching elements M31 and a switching module S2. The multiple matching elements M31 are connected in parallel between the second feed point F2 of the second radiating branch 3 and the switching module S2. The switching module S2 is also connected to the third feed output terminal 51 of the second feed unit 5.

[0151] In this configuration, the matching parameter values ​​of the plurality of matching elements M31 are all different from each other. The switching module S2 can selectively establish connections between different matching elements M31 and the third power output terminal 51 of the second feed unit 5, thereby making the overall matching parameter values ​​of the third matching unit M3 different, thus achieving impedance matching of different sub-frequency bands in the low-frequency band. Therefore, the aforementioned third matching unit M3 achieves the impedance matching required for different sub-frequency bands in the low-frequency band by changing its own matching parameter values.

[0152] In some embodiments, the switch module S2 is also used to disconnect all matching elements M31 from the third feed output terminal 51 when the asymmetric dipole antenna is operating in the satellite communication band, thereby preventing the first non-satellite communication band feed signal output by the third feed output terminal 51 from being transmitted to the second feed point F2 of the second radiating branch 3, thus avoiding interference with the satellite communication band.

[0153] In some embodiments, the low-frequency band includes four sub-bands, namely the B8 band (880MHz~960MHz), the B20 band (791MHz~862MHz), the B28 band (700MHz~800MHz), and the B5 band (824MHz~896MHz).

[0154] In some embodiments, the switch module S2 may be a single-pole multi-throw switch.

[0155] Among them, such as Figure 17 As shown, the plurality of matching elements M31 can be four. In some embodiments, the switch module S2 can be a single-pole four-throw switch (SP4T). The four matching elements M31 can correspond to the four sub-bands of the low-frequency band respectively. When the switch module S2 controls the establishment of a connection between a certain matching element M31 and the third power output terminal 51 of the second feed unit 5, the matching parameter value of the third matching unit M3 can meet the impedance matching requirements of the corresponding sub-band. In some embodiments, when the switch module S2 is a single-pole four-throw switch (SP4T), it includes an initial state in which the single-pole four-throw switch does not establish any connection between the matching element M31 and the third power output terminal 51 of the second feed unit 5. Therefore, when the switch module S2 is a single-pole four-throw switch (SP4T), the aforementioned switch module S2 is used to disconnect all matching elements M31 from the third feed output terminal 51 when the asymmetric dipole antenna is operating in the satellite communication frequency band, so that the single-pole four-throw switch can be in the initial state.

[0156] like Figure 17 As shown, the third matching unit M3 also includes a matching element M32 connected between the third power supply output terminal 51 and ground.

[0157] In some embodiments, the overall matching parameter value of the third matching unit M3 can be the parallel value of the matching element M31 and the matching element M32 currently selected and connected by the switching module S2. Since the matching element M32 is fixedly connected, its matching parameter value remains unchanged. The overall matching parameter value of the third matching unit M3 is determined by the matching element M31 currently selected and connected by the switching module S2. Therefore, by selecting and establishing different connections between the matching element M31 and the third power supply output terminal 51 of the second feed unit 5 through the switching module S2, the overall matching parameter value of the third matching unit M3 is different, thus achieving different impedance matching.

[0158] Among them, such as Figure 17 As shown, the plurality of matching elements M31 and M32 are all inductors, and the matching parameter values ​​of the plurality of matching elements M31 and M32 are all inductance values.

[0159] Obviously, Figure 17 This is merely an example; in other embodiments, the third matching unit M3 may also include other implementation structures. For instance, the switch module S2 may also include multiple single-pole single-throw switches, each single-pole single-throw switch connected in series with a matching element M32 between the third feed output terminal 51 of the second feed unit 5 and the second feed point F2 of the second radiating stub 3. Each matching element M32 and the corresponding single-pole single-throw switch form a matching branch, and multiple matching branches are connected in parallel between the third feed output terminal 51 of the second feed unit 5 and the second feed point F2 of the second radiating stub 3.

[0160] In some embodiments, the first feed output terminal 41 of the first feed unit 4 is further used to output a second non-satellite communication frequency band feed signal to the first feed point F1. As mentioned above, the electronic device 100 may further include a second matching unit, and the second matching unit M2 is an adjustable matching unit. The equivalent electrical length of the first radiating stub 2 under the cooperation of the second matching unit M2 can be changed to λ2 / 4, where λ2 is the wavelength corresponding to the second non-satellite communication frequency band, so that the first radiating stub supports the transmission and reception of electromagnetic wave signals in the second non-satellite communication frequency band under the excitation of the second non-satellite communication frequency band feed signal.

[0161] Therefore, in some embodiments, the second matching unit M2 can not only change the equivalent electrical length of the first radiating branch 2 to the equivalent electrical length corresponding to different satellite communication frequency bands, but also to the equivalent electrical length corresponding to the second non-satellite communication frequency band, so as to be able to work in the satellite communication frequency band or the second non-satellite communication frequency band as needed.

[0162] In some embodiments, the second non-satellite communication frequency band includes multiple frequency bands, and the equivalent electrical length of the first radiating stub 2 in cooperation with the second matching unit M2 can be changed to 1 / 4 of the wavelength corresponding to any frequency band in the second non-satellite communication frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in any frequency band of the second non-satellite communication frequency band.

[0163] The first feed source 401 of the first feed source unit 4 can be a composite feed source, that is, it can simultaneously output the feed signal of the satellite communication frequency band and the feed signal of the second non-satellite communication frequency band. As mentioned above, the first feed source unit 4 may also include a power divider unit 402, wherein the power divider unit 402 can be a power divider or a directional coupler.

[0164] When the power divider unit 402 is a power divider, the power divider unit 402 can split all the feed signals, such as the feed signal of the output satellite communication frequency band and the feed signal of the second non-satellite communication frequency band, from the first feed source 401 into two outputs. Since the second radiating stub 3 does not meet the resonance requirements of the second non-satellite communication frequency band, even if it is output to the second radiating stub 3, it will not have any impact.

[0165] When the power divider unit 402 is a directional coupler, it can selectively split one input signal into two or more identical output signals, while other input signals are not split and are directly output. That is, when the power divider unit 402 is a directional coupler, it can selectively split only the feed signal of the satellite communication band, that is, split the feed signal of the satellite communication band into the aforementioned first feed signal and second feed signal of the satellite communication band, while the feed signal of the second non-satellite communication band is directly output through the first feed output terminal 41, and is not output to the second radiating branch 3 through the second feed output terminal 42, effectively avoiding interference.

[0166] Please return to the reference. Figure 10When the second matching unit M2 is an adjustable matching unit, the second matching unit M2 includes a second inductor L2 and a second capacitor C2, and also includes multiple matching branches M21 connected in parallel between the first power supply output terminal 41 and ground. The second capacitor C2 is connected between the first power supply output terminal 41 and the first power supply point F1, and the second inductor L2 is connected between the end of the second capacitor C2 connected to the first power supply output terminal 41 and ground. Each matching branch M21 includes a matching element M22 and a matching switch SW1 connected in series.

[0167] Therefore, the matching parameter values ​​of the matching element M22 in each matching branch M21 are different, or further, the combined matching parameter values ​​of the matching elements M22 in different combinations of matching branches M21 are different. Thus, by activating different matching switches SW1, or by activating different combinations of matching switches SW1, the overall matching parameter values ​​of the second matching unit M2 can be different, thereby achieving different matching adjustments, and allowing the equivalent electrical length of the first radiating stub 2 to be changed in cooperation with the second matching unit M2. Figure 10 The diagram illustrates four matching branches M21 connected in parallel between the first power supply output terminal 41 and ground. These four matching branches M21 can be configured in various ways, such as each matching branch M21 being individually active, any two matching branches M21 being active, any three matching branches being active, or all four matching branches being active. This allows the second matching unit M2 to present a greater number of matching parameter values, thus satisfying the matching requirements of multiple different satellite communication frequency bands and multiple frequency bands of the second non-satellite communication frequency band.

[0168] In some embodiments, the second non-satellite communication frequency band includes 4G mid-to-high frequency bands and 5G frequency bands. For example, the second non-satellite communication frequency band may include the B1 band, B3 band, B7 band, B40 band, B41 band, and 5G N78 band.

[0169] Please see Figure 18 The diagram illustrates a portion of the structure of the electronic device 100 in some embodiments of this application. Figure 18 The diagram illustrates the structure of the electronic device 100 when it simultaneously includes the first matching unit M1, the second matching unit M2, and the third matching unit M3, and also illustrates the specific structure of the first matching unit M1, the second matching unit M2, and the third matching unit M3.

[0170] For ease of illustration, Figure 18The diagram provides a simplified illustration of the first radiating stub 2 and the second radiating stub 3, and also a simplified illustration of the structures of the first feed unit 4 and the second feed unit 5. Furthermore, Figure 18 The middle connecting floor 1, etc., have been omitted.

[0171] in, Figure 18 The structure of the second matching unit M2 is illustrated with an example of connecting a single-pole four-throw switch (SP4T), while the structure of the first matching unit M1 and the third matching unit M3 is illustrated with the aforementioned structure when they are adjustable matching units.

[0172] In this context, the first matching unit M1, the second matching unit M2, and the third matching unit M3 can all be the structures described above for adjustable matching units. For details, please refer to [link to relevant documentation]. Figure 18 The aforementioned related information will not be repeated here.

[0173] Among them, such as Figure 16 , Figure 18 As shown in the figure, the second feed unit 5 may include a second feed 501, and the third power output terminal 51 of the second feed unit 5 may be the output terminal of the second feed 501.

[0174] Please see Figure 19 This is a schematic diagram illustrating the return loss of the electronic device 100 in some embodiments of this application when operating in the first non-satellite communication frequency band. Figure 19 Specifically, it can be as follows: Figure 18 The diagram shows the return loss of the electronic device 100 when it operates in the first non-satellite communication frequency band, obtained through simulation testing using the electronic device 100 shown as an example.

[0175] In a given frequency band, lower input return loss at the resonant frequency indicates lower loss at that frequency and higher antenna efficiency. Correspondingly, higher overall system efficiency indicates higher antenna efficiency at that resonant frequency.

[0176] As mentioned above, the first non-satellite communication frequency band can be a low-frequency band, and includes four sub-bands: B8 band (880MHz~960MHz), B20 band (791MHz~862MHz), B28 band (700MHz~800MHz), and B5 band (824MHz~896MHz).

[0177] in, Figure 19The diagram illustrates the return loss curves S11-1 for the electronic device 100 operating in the B28 frequency band, S11-2 for the electronic device 100 operating in the B20 frequency band, S11-3 for the electronic device 100 operating in the B5 frequency band, and S11-4 for the electronic device 100 operating in the B8 frequency band.

[0178] Among them, such as Figure 19 As shown, the return loss at approximately 730 MHz resonant frequency in the B28 band is approximately -17.5 dB, the return loss at approximately 830 MHz resonant frequency in the B20 band is approximately -21 dB, the return loss at approximately 880 MHz resonant frequency in the B5 band is approximately -11 dB, and the return loss at approximately 950 MHz resonant frequency in the B8 band is approximately -9 dB.

[0179] Therefore, when the electronic device 100 operates in different frequency bands of the first non-satellite communication frequency band through the third matching unit M3, such as operating in different sub-frequency bands of the low frequency band, the return loss is low, thus ensuring good radiation performance in the low frequency band.

[0180] Please see Figure 20 This is a schematic diagram illustrating the overall system efficiency of the electronic device 100 in some embodiments of this application when it operates in the first non-satellite communication frequency band. Wherein, Figure 20 Specifically, it can be as follows: Figure 18 The diagram shows the overall system efficiency of the electronic device 100 when it operates in the first non-satellite communication frequency band, obtained through simulation testing using the electronic device 100 shown as an example.

[0181] As mentioned above, the first non-satellite communication frequency band can be a low-frequency band, and includes four sub-bands: B8 band (880MHz~960MHz), B20 band (791MHz~862MHz), B28 band (700MHz~800MHz), and B5 band (824MHz~896MHz).

[0182] in, Figure 20 The diagram illustrates the overall system efficiency curves St1, St2, St3, and St4 of the electronic device 100 operating in the B28 frequency band, the B20 frequency band, the B5 frequency band, and the B8 frequency band.

[0183] Among them, such as Figure 20As shown, the overall system efficiency is approximately -5dB at the resonant frequency of approximately 730MHz in the B28 band, approximately -5dB at the resonant frequency of approximately 830MHz in the B20 band, approximately -5dB at the resonant frequency of approximately 880MHz in the B5 band, and approximately -5dB at the resonant frequency of approximately 950MHz in the B8 band.

[0184] Therefore, when the electronic device 100 operates in different frequency bands of the first non-satellite communication frequency band through the third matching unit M3, such as operating in different sub-frequency bands of the low-frequency band, the overall system efficiency is high, and good radiation performance in the low-frequency band can be ensured.

[0185] Please see Figure 21 This is a schematic diagram illustrating the return loss of the electronic device 100 in some embodiments of this application when operating in the second non-satellite communication frequency band. Figure 21 Specifically, it can also be... Figure 18 The diagram shows the return loss of the electronic device 100 when it operates in the second non-satellite communication frequency band, obtained through simulation testing using the electronic device 100 shown as an example.

[0186] In a given frequency band, lower input return loss at the resonant frequency indicates lower loss at that frequency and higher antenna efficiency. Correspondingly, higher overall system efficiency indicates higher antenna efficiency at that resonant frequency.

[0187] in, Figure 21 The diagram shows a return loss obtained through simulation, primarily based on the second non-satellite communication frequency band, which includes mid-to-high frequency bands, and the electronic device 100 operating in the mid-to-high frequency band. Figure 21 The illustrated mid-to-high frequency bands include a band with a resonant frequency of approximately 1.8 GHz, a band with a resonant frequency of approximately 2.05 GHz, a band with a resonant frequency of approximately 2.35 GHz, and a band with a resonant frequency of approximately 2.65 GHz. These bands can be identified as the B3 band, B1 band, B40 band, and B41 band, respectively.

[0188] in, Figure 21 The diagram illustrates the return loss curves S11-5 for the electronic device 100 operating in the B3 frequency band, S11-6 for the electronic device 100 operating in the B1 frequency band, S11-7 for the electronic device 100 operating in the B40 frequency band, and S11-8 for the electronic device 100 operating in the B41 frequency band.

[0189] Among them, such as Figure 21As shown, the return loss at the resonant frequency of approximately 1.8 GHz in the B3 band is approximately -9 dB, the return loss at the resonant frequency of approximately 2.05 GHz in the B1 band is approximately -9.1 dB, the return loss at the resonant frequency of approximately 2.35 GHz in the B40 band is approximately -8.9 dB, and the return loss at the resonant frequency of approximately 2.65 GHz in the B41 band is approximately -9.3 dB.

[0190] Therefore, when the electronic device 100 operates in different frequency bands of the second non-satellite communication frequency band through the second matching unit M2, such as operating in the mid-to-high frequency band of the second non-satellite communication frequency band, the return loss is low, thus ensuring good radiation performance in the mid-to-high frequency band.

[0191] Please see Figure 22 This is a schematic diagram illustrating the overall system efficiency of the electronic device 100 in some embodiments of this application when it operates in the second non-satellite communication frequency band. Wherein, Figure 22 Specifically, it can also be... Figure 18 The diagram shows the overall system efficiency of the electronic device 100 when it operates in the first non-satellite communication frequency band, obtained through simulation testing using the electronic device 100 shown as an example.

[0192] in, Figure 22 The diagram illustrates the overall system efficiency curves St5, St6, St7, and St8 of the electronic device 100 operating in the B3 frequency band, the B1 frequency band, the B40 frequency band, and the B41 frequency band.

[0193] Among them, such as Figure 22 As shown, the overall system efficiency is approximately -1.5 dB at the resonant frequency of approximately 1.8 GHz in the B3 band, approximately -1.5 dB at the resonant frequency of approximately 2.05 GHz in the B1 band, approximately -1.5 dB at the resonant frequency of approximately 2.35 GHz in the B40 band, and approximately -1.5 dB at the resonant frequency of approximately 2.65 GHz in the B41 band.

[0194] Therefore, when the electronic device 100 operates in different frequency bands of the second non-satellite communication frequency band through the second matching unit M2, such as operating in the mid-to-high frequency band, the overall system efficiency is high, and good radiation performance in the mid-to-high frequency band can be ensured.

[0195] Therefore, it can be seen that the electronic device 100 of this application, through the above structure, can achieve full coverage of low frequency, medium and high frequency and 5G frequency bands, and can also support satellite communication functions. It only requires two radiating branches, and the size of one of the radiating branches is very small. Therefore, it can greatly reduce the space occupied by the electronic device 100.

[0196] Among them, such as Figure 1 , Figure 3 , Figure 5 As shown in the figure, the electronic device 100 includes a top end D11 and a bottom end D12, and also includes two opposite side ends D13. As previously described, the second radiating branch 3 includes a first radiating sub-branch 31 and a second radiating sub-branch 32 connected to each other. The first radiating sub-branch 31 and the second radiating sub-branch 32 are respectively disposed at the top end D11 and one side end D13 of the electronic device 100.

[0197] That is, in some embodiments, the second radiating branch 3 may be a bent structure, with the first radiating sub-branch 31 and the second radiating sub-branch 32 connected at an angle to form the second radiating branch 3. The second radiating branch 3 is located at the apex where the top end D11 and the side end D13 of the electronic device 100 meet, thereby allowing space for other radiating branches. The included angle between the first radiating sub-branch 31 and the second radiating sub-branch 32 may be 0° to 180°, that is, greater than 0° and less than 180°. In some embodiments, such as... Figure 1 , Figure 3 As shown in the figure, the included angle can be approximately 90°.

[0198] Among them, such as Figure 1 , Figure 3 , Figure 5 As shown in the figure, the top end D11 and bottom end D12 of the electronic device 100 can be connected to the adjacent side end D13 by an arc transition. The first radial sub-segment 31 and the second radial sub-segment 32 can also be adapted to be connected by an arc transition. Specifically, when the first radial sub-segment 31 and the second radial sub-segment 32 are connected by an arc transition, the included angle between the first radial sub-segment 31 and the second radial sub-segment 32 can be the included angle between the extension lines of the first radial sub-segment 31 and the second radial sub-segment 32.

[0199] In some embodiments, such as Figure 1 , Figure 3 , Figure 5As shown in the figure, the top end D11 and one of the side ends D13 of the electronic device 100 are parallel to and close to the first side B1 and the second side B2 of the ground plane 1, respectively. Therefore, the second radiating branch 3 is located at the apex where the top end D11 and one of the side ends D13 of the electronic device 100 are connected, and is close to the apex where the first side B1 and the second side B2 of the ground plane 1 are connected. As mentioned above, the orthographic projection of the second feed point F2 on the ground plane 1 is located in the current weakness region Q1 of the characteristic mode current of the ground plane 1, wherein the current weakness region Q1 is located in a region with the intersection of the extension lines of the adjacent first side B1 and the second side B2 as the center O and 1 / 16 of the wavelength of the first frequency band as the radius R. Therefore, in some embodiments, by setting the second radiating branch 3 at the apex where the top end D11 and one of the side ends D13 of the electronic device 100 are connected, it can be ensured as much as possible that the orthographic projection of the second feed point F2 on the ground plane 1 is located in the current weakness region Q1 of the characteristic mode current of the ground plane 1.

[0200] In some embodiments, such as Figure 1 , Figure 3 , Figure 5 As shown in the figure, the second feed point F2 is located at the first radiating sub-stub 31. In some embodiments, the second feed point F2 may also be located at the connection between the first radiating sub-stub 31 and the second radiating sub-stub 32, which further ensures that the orthographic projection of the second feed point F2 on the ground plane 1 is located in the current weakness region Q1 of the characteristic mode current of the ground plane 1. In some embodiments, such as Figure 3 , Figure 5 As shown in the figure, the length of the first radial sub-branch 31 can be less than the length of the second radial sub-branch 32, while the larger second radial sub-branch 32 is adjacent to and parallel to the second side B2 of the grounding plate 1, which is the longer side, which is more conducive to spatial layout.

[0201] Among them, such as Figure 3 and Figure 5 As shown in the figure, the first radiating branch 2 is disposed at the top end D11 of the electronic device 100 and is spaced apart from the first radiating sub-branch 31.

[0202] Therefore, the first radiating branch 2 and the second radiating branch 3 are both generally located at or near the top D11 of the electronic device 100, so that when the electronic device 100 is operating in the satellite communication frequency band, the antenna radiation direction is generally towards the top D11 of the electronic device 100, thereby ensuring or improving satellite communication performance.

[0203] In some embodiments, the second radiating branch 3 may also be a straight strip, located on the side end D13 of the electronic device 100 near the top end D11, and adjacent to and parallel to the second side B2 of the ground plane 1.

[0204] In this application, the use of directional terms such as "top" and "bottom" when describing the electronic device 100 is primarily based on the orientation of the device when held and used by the user. "Top" refers to the position facing the top of the electronic device 100, and "bottom" refers to the position facing the bottom. This does not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the orientation of the electronic device 100 in a real-world application scenario. In some embodiments, the bottom end D12 of the electronic device 100 is the end with a headphone jack and a USB port, and the top end D11 is the opposite end to the end with the headphone jack and USB port, or it may refer to the end with a camera, receiver, etc.

[0205] Among them, such as Figure 1 , Figure 3 , Figure 5 As shown in the figure, the electronic device 100 includes a middle frame 101, and the ground plane 1 is at least a portion of the middle frame 101.

[0206] That is, in some embodiments, the grounding plate 1 may specifically be the middle frame 101, or a portion of the middle frame 101 separated by gaps.

[0207] Generally, the mid-frame 101 of the electronic device 100 is made of metal and serves as the overall ground plane of the electronic device 100. In some embodiments of this application, at least a portion of the mid-frame 101 is reused as a ground plane 1 to cooperate with the radiating stub 2 to form an asymmetric dipole antenna, eliminating the need for additional antenna structures and saving cost and space.

[0208] Please see Figure 23 This is a schematic diagram of the rear side of an electronic device 100 in some embodiments of this application. For example... Figure 23 As shown, in some embodiments, the electronic device 100 includes a metal back cover 102, and the ground plane 1 is at least a portion of the metal back cover 102.

[0209] That is, in some embodiments, the grounding plate 1 may specifically be the metal back cover 102, or a portion of the metal back cover 102 isolated by gaps. The metal back cover 102 may be connected to the middle frame 101 for grounding.

[0210] Therefore, in some embodiments of this application, by reusing at least a portion of the metal back cover 102 as a ground plane 1 to cooperate with the radiating stub 2 to form an asymmetric dipole antenna, no additional antenna structure is required, saving cost and space.

[0211] Obviously, in some embodiments, when the ground plane 1 is at least a portion of the middle frame 101, the back cover of the electronic device 100 may not be a metal back cover, but may be a back cover made of other materials, such as a plastic back cover, a ceramic back cover, etc.

[0212] Since both the middle frame 101 and the metal back cover 102 are relatively large, they meet the size requirements for low-frequency radiation. Because the wavelengths corresponding to low-frequency bands are relatively long, the equivalent electrical length of the middle frame 101 or the metal back cover 102, for example, the length of its long side, can generally match half the wavelength of the low-frequency band. As mentioned earlier, the ground plane 1 can also be a portion of the middle frame 101 isolated by a gap, or the ground plane 1 can also be a portion of the metal back cover 102 isolated by a gap. Therefore, a region of the corresponding size can be isolated relatively accurately based on half the wavelength of the low-frequency band. Alternatively, as mentioned earlier, the ground plane 1 can also satisfy an equivalent electrical length of nλ² + λ² / 2 under the matching adjustment of the matching unit M1.

[0213] When the grounding plate 1 is a portion of the middle frame 101 isolated by a gap, this portion serving as the grounding plate 1 is electrically isolated from other areas and filled with insulating material between it and other areas to maintain the overall structural stability of the middle frame 101. Similarly, when the grounding plate 1 is a portion of the metal back cover 102 isolated by a gap, this portion serving as the grounding plate 1 is electrically isolated from other areas and filled with insulating material between it and other areas to maintain the overall structural stability of the metal back cover 102.

[0214] Among them, such as Figure 23 As shown, a camera hole 102a can be opened on the metal back cover 102 to allow the rear camera (not shown in the figure) of the electronic device 100 to receive light for taking pictures.

[0215] Therefore, in this application, the electronic device 100 includes a middle frame 101, and the ground plane 1 is at least a portion of the middle frame 101; or, the electronic device 100 includes a metal back cover 102, and the ground plane 1 is at least a portion of the metal back cover 102.

[0216] Please return to the reference. Figure 3 and Figure 5 Etc., such as Figure 3 and Figure 5As shown in the figure, the electronic device 100 also includes a frame 110, and the first radiating branch 2 and the second radiating branch 3 are metal segments disposed on the frame 110 of the electronic device 100.

[0217] In some embodiments, the frame 110 of the electronic device 100 is a metal frame, and the first radiating branch 2 and the second radiating branch 3 are metal frame segments formed by opening the gap X1 in the metal frame of the electronic device 100.

[0218] In some other embodiments, the frame 110 of the electronic device 100 is a non-metallic frame, and the first radiating branch 2 and the second radiating branch 3 are metal segments disposed in the frame of the electronic device 100.

[0219] That is, in some other embodiments, the frame 110 of the electronic device 100 may also be a non-metallic frame with low conductivity, such as plastic, ceramic, etc. The first radiating branch 2 and the second radiating branch 3 are metal segments disposed in the frame 110 of the electronic device 100.

[0220] The first radiating branch 2 and the second radiating branch 3 may be embedded in the frame of the electronic device 100 or disposed on the inner side of the frame of the electronic device 100.

[0221] In some embodiments, such as Figure 1 and Figure 5 As shown in the figure, the electronic device 100 also includes a motherboard 103, wherein the aforementioned first feed source 401, second feed source 501, etc., may be disposed on the motherboard 103. When the electronic device 100 further includes the first matching unit M1, the second matching unit M2, and the third matching unit M3, the first matching unit M1, the second matching unit M2, and the third matching unit M3 may also be disposed on the motherboard 103.

[0222] In some embodiments, the first radiating branch 2 and the second radiating branch 3, etc., may also be disposed on the antenna bracket and disposed in the electronic device 100 through the antenna bracket, for example disposed on the motherboard 103 through the antenna bracket, and may be close to the frame 110.

[0223] The first radiating segment 2 and the second radiating segment 3 can be LDS (laser-formed) antennas formed on the antenna bracket of the motherboard 103 using laser engraving technology. That is, an antenna bracket is set on the motherboard 103, and then an LDS antenna is formed on it. An LDS antenna refers to a metal antenna pattern directly plated onto the antenna bracket using laser engraving technology. Alternatively, the radiating segments 2 and others can be FPC (flexible printed circuit) antennas set on the motherboard 103 or other locations using laser engraving technology. An FPC antenna refers to a metal antenna pattern formed on an FPC, and the FPC antenna can be fixed to the motherboard 103 by bonding, embedding, soldering, or other methods, etc.

[0224] The electronic device 100 can be any device including an antenna, such as a mobile phone, tablet computer, smartwatch, or laptop computer.

[0225] The electronic device 100 of this application outputs a first feed signal and a second feed signal to the first radiating stub 2 and the asymmetric dipole antenna respectively through the first feed unit 4. This excites the first radiating stub 2 and the asymmetric dipole antenna to generate a first current and a second current respectively, which are conducted along the first side B1 and the second side B2 of the ground plane 1. The phase difference between the first feed signal and the second feed signal is 90°, resulting in a 90° phase difference between the first current and the second current. This allows the first radiating stub 2 and the asymmetric dipole antenna to form a circularly polarized antenna, supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band. Furthermore, since the second radiating stub 3 and the ground plane 1 form an asymmetric dipole antenna, and since the asymmetric dipole antenna mainly radiates from a larger branch, the size of the ground plane 1 can primarily meet the size requirements for operation in the satellite communication frequency band. The second radiating stub 3 can be made very small, thereby effectively reducing space occupation.

[0226] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0227] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device, characterized in that, include: The grounding plate includes the adjacent first and second sides; The first radiating branch is adjacent to and parallel to the first side of the ground plane. The first radiating branch includes a first feed point and a first ground point. The first ground point is connected to the ground plane and grounded. The second radiating stub includes a second feed point. The second radiating stub is located near the connection position of the first side and the second side of the ground plane, and forms an asymmetric dipole antenna with the ground plane. The first feed unit includes a first feed output terminal and a second feed output terminal. The first feed output terminal is connected to the first feed point and is used to output a first feed signal in the satellite communication frequency band to the first feed point to excite the first radiating stub to generate a first current conducted in a direction parallel to the first side of the ground plane. The second feed output terminal is connected to the second feed point and is used to output a second feed signal in the satellite communication frequency band to the second feed point to excite the asymmetric dipole antenna to generate a second current conducted in a direction parallel to the second side of the ground plane. The phase difference between the first feed signal in the satellite communication frequency band and the second feed signal in the satellite communication frequency band is 90°, resulting in a 90° phase difference between the first current and the second current. This allows the first radiating stub and the asymmetric dipole antenna to form a circularly polarized antenna, supporting the reception and / or transmission of electromagnetic wave signals in the satellite communication frequency band. Wherein, the second radiating stub, under the excitation of the second feed signal of the satellite communication frequency band, couples and excites the ground plane to operate in the high-order mode resonant mode of the satellite communication frequency band, thereby causing the ground plane to generate a second current conducted along the second side.

2. The electronic device according to claim 1, characterized in that, The first feed unit includes a first feed, a power divider, and a phase shifter. The power divider includes an input terminal and two output terminals. The input terminal is connected to the first feed. The power divider is used to divide the satellite communication frequency band feed signal provided by the first feed into a first satellite communication frequency band feed signal and a second satellite communication frequency band feed signal. The phase shifter is connected between one of the first and second feed output terminals and one of the output terminals of the power divider. The other output terminal of the power divider is connected to the other of the first and second feed output terminals. The phase shifter is used to adjust the phase of the first or second satellite communication frequency band feed signal output by the power divider, so that the phase difference between the first and second satellite communication frequency band feed signals output by the first and second feed output terminals of the first feed unit is 90°.

3. The electronic device according to claim 1, characterized in that, The electronic device further includes a first matching unit, which is connected between the second power supply output terminal and the second power supply point to achieve impedance matching of the satellite communication frequency band, so that the ground plane operates in the high-order mode resonant mode of the satellite communication frequency band with the cooperation of the first matching unit.

4. The electronic device according to claim 3, characterized in that, The first matching unit is an adjustable matching unit, used to achieve impedance matching for different satellite communication frequency bands, so that the ground plane works in the higher-order mode resonant mode of different satellite communication frequency bands with the cooperation of the first matching unit, and thus works in different satellite communication frequency bands.

5. The electronic device according to claim 1, characterized in that, The equivalent electrical length of the first radiating stub is λ1 / 4, where λ1 is the wavelength corresponding to the satellite communication frequency band. The first radiating stub operates in the 1 / 4 wavelength resonant mode of the satellite communication frequency band under the excitation of the first feed signal of the satellite communication frequency band, and operates in the satellite communication frequency band.

6. The electronic device according to claim 5, characterized in that, The electronic device further includes a second matching unit, which is connected between the first power supply output terminal and the first power supply point. The equivalent electrical length of the first radiating branch under the cooperation of the second matching unit is λ1 / 4.

7. The electronic device according to claim 6, characterized in that, The second matching unit is an adjustable matching unit. The equivalent electrical length of the first radiating stub can be changed with the cooperation of the second matching unit, so that the first radiating stub can operate in different satellite communication frequency bands.

8. The electronic device according to claim 1, characterized in that, The electronic device further includes a power supply switch, which is connected between the second power supply output terminal and the second power supply point. The power supply switch is turned on when the asymmetric dipole antenna is operating in the satellite communication frequency band and turned off when the asymmetric dipole antenna is operating in a non-satellite communication frequency band.

9. The electronic device according to claim 8, characterized in that, The electronic device further includes a second feed unit, which includes a third feed output terminal. The third feed output terminal is connected to the second feed point of the second radiating stub. When the feed switch is off, the second feed unit outputs a first non-satellite communication frequency band feed signal to the second radiating stub through the third feed output terminal to excite the asymmetric dipole antenna to support the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

10. The electronic device according to claim 9, characterized in that, The first non-satellite communication frequency band is lower than the satellite communication frequency band. The second radiating stub is coupled with the ground plane to form a 1 / 2 wavelength asymmetric dipole antenna. Under the excitation of the feed signal of the first non-satellite communication frequency band, the second radiating stub couples and excites the ground plane to operate in the 1 / 2 wavelength resonant mode of the first non-satellite communication frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in the first non-satellite communication frequency band.

11. The electronic device according to claim 10, characterized in that, The orthographic projection of the second feed point on the ground plane is located in the current weakness region of the characteristic mode current of the ground plane, wherein the current weakness region is located in a region with the intersection of the extensions of the adjacent first side and the second side as the center and 1 / 16 of the wavelength of the first non-satellite communication frequency band as the radius.

12. The electronic device according to claim 10, characterized in that, The electronic device further includes a third matching unit, which is connected between the third power output terminal of the second feed unit and the second power point to achieve impedance matching of the first non-satellite communication frequency band. The ground plane operates in the 1 / 2 wavelength resonant mode of the first non-satellite communication frequency band with the cooperation of the third matching unit.

13. The electronic device according to claim 12, characterized in that, The first non-satellite communication frequency band is a low-frequency band, which includes multiple sub-frequency bands. The third matching unit is an adjustable matching unit used to achieve impedance matching of different sub-frequency bands in the low-frequency band, so that the ground plane works in the 1 / 2 wavelength resonant mode of different sub-frequency bands in the low-frequency band with the cooperation of the third matching unit.

14. The electronic device according to claim 13, characterized in that, The third matching unit includes multiple matching elements and a switching module. The multiple matching elements are connected in parallel between the second feed point and the switching module. The switching module is also connected to the third feed output terminal of the second feed unit. The switching module is used to select and establish connections between different matching elements and the third feed output terminal to achieve impedance matching of different sub-bands in the low-frequency band. The switching module is also used to disconnect all matching elements from the third feed output terminal when the asymmetric dipole antenna is operating in the satellite communication band.

15. The electronic device according to claim 7, characterized in that, The first feed output terminal of the first feed unit is also used to output the second non-satellite communication frequency band feed signal to the first feed point. The second matching unit is an adjustable matching unit. The equivalent electrical length of the first radiating stub can be changed to λ2 / 4 under the cooperation of the second matching unit, where λ2 is the wavelength corresponding to the second non-satellite communication frequency band, so that the first radiating stub supports the transmission and reception of electromagnetic wave signals in the second non-satellite communication frequency band under the excitation of the feed signal in the second non-satellite communication frequency band.

16. The electronic device according to claim 15, characterized in that, The second non-satellite communication frequency band includes multiple frequency bands. The equivalent electrical length of the first radiating stub, with the cooperation of the second matching unit, can be changed to 1 / 4 of the wavelength corresponding to any frequency band in the second non-satellite communication frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in any frequency band of the second non-satellite communication frequency band.

17. The electronic device according to claim 16, characterized in that, The second non-satellite communication frequency band includes the 4G mid-to-high frequency band and the 5G frequency band.

18. The electronic device according to claim 1, characterized in that, The electronic device includes a top end and a side end. The first side and the second side of the ground plane are adjacent to the top end and the side end of the electronic device, respectively. The second radiating branch includes a first radiating sub-branch and a second radiating sub-branch connected to each other. The first radiating sub-branch and the second radiating sub-branch are respectively disposed at the top end and the side end of the electronic device. The first radiating branch is disposed at the top end of the electronic device and is spaced apart from the first radiating sub-branch.

19. The electronic device according to claim 1, characterized in that, The electronic device includes a mid-frame, and the ground plane is at least a portion of the mid-frame; or, the electronic device includes a metal back cover, and the ground plane is at least a portion of the metal back cover.

20. The electronic device according to claim 1, characterized in that, The electronic device includes a frame, and the first radiating branch and the second radiating branch are metal segments disposed on the frame. Alternatively, the electronic device also includes an antenna bracket made of insulating material, and the first radiating branch and the second radiating branch are fixed to the antenna bracket and fixed in the electronic device through the antenna bracket.

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