Antenna assembly and electronic device

Abstract

This application provides an antenna assembly including a first radiating element, a second radiating element, and a feed source. The first radiating element includes a first radiating stub, which includes a first end, a second end, and a feed point, with the first end being an open-circuit end. The second radiating element includes a second radiating stub, which includes a third end and a fourth end, with the third end connected to the second end of the first radiating stub and the fourth end being an open-circuit end. The feed source is connected to the feed point of the first radiating stub for feeding a first feed signal through the feed point. The electrical length of both the first and second radiating elements is λ1 / 4, where λ1 is the wavelength corresponding to a first frequency band supported by the antenna assembly under the excitation of the first feed signal. This application also provides an electronic device. This application enables the antenna radiation pattern to be in the desired direction, thereby effectively improving the overall radiation performance of the antenna.

Description

Technical Field

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

[0002] Currently, with the widespread adoption of 5G antennas, electronic devices are including an increasing number of antennas. However, due to the increasing prevalence of full-screen and curved screens, the available space for antennas is shrinking. Current antenna structures generally include a grounding point. For example, the PIFA antenna structure includes a grounding point and a feed point to support the transmission and reception of intermediate frequency (IF) electromagnetic signals within a relatively small size. For some antennas, such as GPS antennas, the metallic ground contributes significantly to radiation, often affecting the antenna pattern and causing it to deviate from the desired direction, thus impacting the overall radiation performance of the antenna. Summary of the Invention

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

[0004] In a first aspect, an antenna assembly is provided, comprising a first radiating element, a second radiating element, and a feed source. The first radiating element includes a first radiating stub, which includes a first end, a second end, and a feed point, wherein the first end is an open-circuit end. The second radiating element includes a second radiating stub, which includes a third end and a fourth end, wherein the third end is connected to the second end of the first radiating stub, and the fourth end is an open-circuit end. The feed source is connected to the feed point of the first radiating stub and is used to feed a first feed signal through the feed point. The electrical length of both the first and second radiating elements is λ1 / 4, where λ1 is the wavelength corresponding to a first frequency band supported by the antenna assembly under the excitation of the first feed signal.

[0005] Secondly, an electronic device is also provided, comprising an antenna assembly. The antenna assembly includes a first radiating element, a second radiating element, and a feed source. The first radiating element includes a first radiating stub, which includes a first end, a second end, and a feed point, wherein the first end is an open-circuit end. The second radiating element includes a second radiating stub, which includes a third end and a fourth end, wherein the third end is connected to the second end of the first radiating stub, and the fourth end is an open-circuit end. The feed source is connected to the feed point of the first radiating stub and is used to feed a first feed signal through the feed point. The electrical length of both the first and second radiating elements is λ1 / 4, where λ1 is the wavelength corresponding to a first frequency band supported by the antenna assembly under the excitation of the first feed signal.

[0006] The antenna assembly and electronic device of this application, by designing two radiating elements with an electrical length of λ1 / 4, can effectively excite the balanced mode through the two radiating elements with an electrical length of λ1 / 4, so that the radiation does not need to be carried out through the metal ground. Thus, it avoids the problem that the antenna pattern deviates significantly from the desired direction when the radiation is carried out through the metal ground in the existing method, and can effectively improve the overall radiation performance of the antenna. Attached Figure Description

[0007] 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.

[0008] Figure 1 This is a schematic diagram of the structure of an antenna assembly in one example of some embodiments of this application.

[0009] Figure 2 This is a schematic diagram of the current distribution of the equivalent balanced mode of the antenna assembly in some embodiments of this application.

[0010] Figure 3 This is another structural schematic diagram of an antenna assembly in one example of some embodiments of this application.

[0011] Figure 4 This is yet another structural schematic diagram of an antenna assembly in one example of some embodiments of this application.

[0012] Figure 5 This is a schematic diagram of the antenna assembly in some embodiments of this application in another example.

[0013] Figure 6 This is a schematic diagram of the structure of the antenna assembly in some embodiments of this application in yet another example.

[0014] Figure 7 This is a schematic diagram of the structure of the antenna assembly in some embodiments of this application in yet another example.

[0015] Figure 8 This is a structural block diagram of an electronic device in some embodiments of this application.

[0016] Figure 9 This is a plan view of an electronic device in some embodiments of this application.

[0017] Figure 10 This is a schematic diagram of the return loss and overall system efficiency of the antenna assembly of an electronic device in some embodiments of this application.

[0018] Figure 11This document presents a three-dimensional radiation pattern, a cross-sectional view of the antenna assembly, and a schematic diagram showing the proportion of the upper hemisphere for an electronic device in some embodiments of this application.

[0019] Figure 12 This is another planar schematic diagram of an electronic device in some embodiments of this application.

[0020] Figure 13 This is a schematic diagram illustrating another return loss and overall system efficiency of the antenna assembly of an electronic device in some embodiments of this application.

[0021] Figure 14 The images show a three-dimensional radiation pattern and a cross-sectional view of the antenna assembly of an electronic device in some embodiments of this application at 1.57 GHz.

[0022] Figure 15 This is a three-dimensional radiation pattern and a cross-sectional view of the antenna assembly of an electronic device in some embodiments of this application at 1.575 GHz.

[0023] Figure 16 This is a schematic diagram showing the upper hemisphere proportion of the antenna assembly of an electronic device in some embodiments of this application at 1.58 GHz.

[0024] Figure 17 This is a schematic diagram showing the proportion of the upper hemisphere of the antenna assembly of an electronic device in some embodiments of this application.

[0025] Figure 18 This is yet another plan view of an electronic device in some embodiments of this application.

[0026] Figure 19 This is another schematic diagram of the return loss and overall system efficiency of the antenna assembly of the electronic device in some embodiments of this application.

[0027] Figure 20 This is yet another three-dimensional radiation pattern, antenna directional cross-sectional view, and upper hemisphere proportion diagram of the antenna assembly of the electronic device in some embodiments of this application.

[0028] Figure 21 This is another plan view of an electronic device in some embodiments of this application.

[0029] Figure 22 This is a schematic diagram illustrating the return loss and overall system efficiency of the antenna assembly of an electronic device in some embodiments of this application.

[0030] Figure 23 This is another three-dimensional radiation pattern, antenna directional cross-sectional view and upper hemisphere proportion diagram of the antenna assembly of the electronic device in some embodiments of this application.

[0031] Figure 24This is a schematic diagram showing other return losses and overall system efficiency of the antenna assembly of an electronic device in some embodiments of this application.

[0032] Figure 25 Other three-dimensional radiation patterns, antenna directional cross-sectional views, and upper hemisphere proportion diagrams of the antenna components of electronic devices in some embodiments of this application are shown.

[0033] Figure 26 This is a schematic diagram illustrating another return loss and overall system efficiency of the antenna assembly of an electronic device in some embodiments of this application.

[0034] Figure 27 This is another three-dimensional radiation pattern, antenna directional cross-sectional view, and upper hemisphere proportion diagram of the antenna assembly of the electronic device in some embodiments of this application. Detailed Implementation

[0035] 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.

[0036] 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," 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," etc., can be the same objects.

[0037] Please see Figure 1 This is a schematic diagram of the structure of antenna assembly 1 in one example of some embodiments of this application. Figure 1As shown, the antenna assembly 1 includes a first radiating element 11, a second radiating element 12, and a feed source 13. The first radiating element 11 includes a first radiating stub 111, which has a first terminal D1, a second terminal D2, and a feed point F1. The first terminal D1 is an open-circuit terminal. The second radiating element 12 includes a second radiating stub 121, which has a third terminal D3 and a fourth terminal D4. The third terminal D3 is connected to the second terminal D2 of the first radiating stub 111, and the fourth terminal D4 is an open-circuit terminal. The feed source 13 is connected to the feed point F1 of the first radiating stub 111 and is used to feed a first feed signal through the feed point F1. The electrical lengths of both the first radiating element 11 and the second radiating element 12 are λ1 / 4, where λ1 is the wavelength corresponding to the first frequency band supported by the antenna assembly 1 under the excitation of the first feed signal.

[0038] Therefore, the antenna assembly 1 in this application is designed with two radiating elements, each with an electrical length of λ1 / 4. This allows for the effective excitation of the balanced mode through these two radiating elements without the need for a metal ground to participate in the radiation. This avoids the problem in the prior art where the antenna pattern deviates significantly from the desired direction when a metal ground is used for radiation, thus effectively improving the overall radiation performance of the antenna.

[0039] In some embodiments, the electrical length of both the first radiating unit 11 and the second radiating unit 12 is λ1 / 4, thus the overall electrical length of the first radiating unit 11 and the second radiating unit 12 is λ1 / 2. The connection point of the first radiating branch 111 and the second radiating branch 121 is at the midpoint of the overall electrical length. In some embodiments, the first radiating branch 111 and the second radiating branch 121 may be an integrally formed structure, and the first radiating branch 111 and the second radiating branch 121 are two radiating branches divided at the midpoint of the overall electrical length of the first radiating unit 11 and the second radiating unit 12. In some embodiments, the first radiating unit 11 and the second radiating unit 12 may each consist only of the first radiating unit 11 and the second radiating unit 12, or the first radiating unit 11 or the second radiating unit 12 may further include a matching unit. Therefore, the electrical length of the first radiating unit 11 or the second radiating unit 12 can be the electrical length of the first radiating branch 111 and the second radiating branch 121, or further plus the equivalent electrical length of the matching unit. More specific details will be provided later. However, regardless of the case, the connection point of the first radiating branch 111 and the second radiating branch 121 is at the midpoint of the overall electrical length. Both the first radiating branch 111 and the second radiating branch 121 can be two radiating branches connected at the midpoint of the overall electrical length of the first radiating unit 11 and the second radiating unit 12. This allows the electrical length of the first radiating branch 111 to be λ1 / 4, or the sum of the equivalent electrical lengths of the first radiating branch 111 and the corresponding matching unit to be λ1 / 4, and the electrical length of the second radiating branch 121 to be λ1 / 4, or the sum of the equivalent electrical lengths of the second radiating branch 121 and the corresponding matching unit to be λ1 / 4.

[0040] Please see Figure 2 This is a schematic diagram of the current distribution of the antenna assembly 1 in some embodiments of this application, representing the equivalent balanced mode. Figure 2 As shown, after the feed source 13 feeds in the first feed signal through the feed point F1, it will excite a current I1 from the first terminal D1 of the first radiating stub 111 to the fourth terminal D4 of the second radiating stub 121. Wherein, Figure 2 In the diagram, the first radiating branch 111 and the second radiating branch 121 are separated by dashed lines.

[0041] The current I1 is at its maximum at the connection point P0 between the first radiating branch 111 and the second radiating branch 121, that is, at the second end D2 of the first radiating branch 111 or the third end D3 of the second radiating branch 121, while the current I1 is at its minimum, approximately zero, at the first end D1 of the first radiating branch 111 and the fourth end D4 of the second radiating branch 121. Thus, the equilibrium mode is effectively excited.

[0042] By stimulating the balanced mode, the current flowing through the connection point of the first radiating stub 111 and the second radiating stub 121 will not flow to the metal ground, but will almost entirely flow into the second radiating stub 121. This avoids the problem in the present invention where the excitation current flows into the metal ground and participates in radiation through the metal ground, causing the antenna pattern to deviate significantly from the desired direction. This effectively improves the overall radiation performance of the antenna.

[0043] In some embodiments, the first radiating stub 111 connected to the feed 13 plays a major radiating role. Therefore, the side where the first radiating stub 111 is located can be the side facing the desired antenna pattern. That is, with the antenna assembly 1 of this application, when the desired antenna pattern is a certain target direction, the first radiating stub 111 and the second radiating stub 121 can be arranged sequentially along the target direction. Thus, it can be effectively ensured that the antenna pattern is in the desired direction.

[0044] In some embodiments, the antenna assembly 1 supporting the first frequency band under the excitation of the first feed signal may mean that, under the excitation of the first feed signal, the first radiating stub 111 and the second radiating stub 121 cooperate to support the first frequency band, with only the first radiating stub 111 connected to the feed source 13 playing a major radiating role. For example, the transmission and reception of electromagnetic wave signals in the first frequency band are mainly supported by the first radiating stub 111 resonating at the center frequency corresponding to the first frequency band.

[0045] In some embodiments, the first radiating branch 111 and the second radiating branch 121 are integrally formed into a bent structure, for example, an "L" shaped structure; and one of the first radiating branch 111 and the second radiating branch 121 is straight and the other is bent, for example, an "L" shaped structure, or the first radiating branch 111 and the second radiating branch 121 are both straight, and are connected to form a bent structure.

[0046] For example, such as Figure 1 As shown, the first radial branch 111 is bendable, that is... Figure 1The "L" shape shown has a straight strip-shaped second radial branch 121. For example, Figure 1 As shown, the first radial branch 111 includes a first sub-radial branch 111a and a second sub-radial branch 111b, which are straight strips and are formed by being connected approximately vertically. Figure 1 The first radial branch 111 is shown in an "L" shape. The end of the first sub-radial branch 111a furthest from the second sub-radial branch 111b is the first end D1 of the first radial branch 111, and the end of the second sub-radial branch 111b furthest from the first sub-radial branch 111a is the second end D2 of the first radial branch 111. The second sub-radial branch 111b connects the first sub-radial branch 111a and the second radial branch 121, and the length direction of the second sub-radial branch 111b is parallel to the length direction of the second radial branch 121.

[0047] In this application, the length direction of each radiating branch or sub-radiating branch refers to the extension direction of the long side of the radiating branch or sub-radiating branch.

[0048] In some embodiments, the first radiating branch 111 and the second radiating branch 121 may be integrally formed, with the bent structure formed only at the connection point between the first sub-radiating branch 111a and the second sub-radiating branch 111b. In some embodiments, the second end D2 of the "L"-shaped first radiating branch 111 and the third end D3 of the straight second radiating branch 121 may be fixedly connected by welding or other means.

[0049] Please see Figure 3 This is another structural schematic diagram of antenna assembly 1 in one example of some embodiments of this application. For example... Figure 3 As shown, in some embodiments, the first radial branch 111 is straight, and the second radial branch 121 is bent, that is... Figure 3 The "L" shape shown. Among them, as... Figure 3 As shown, the second radial branch 121 includes a third sub-radial branch 121a and a fourth sub-radial branch 121b, which are straight strips and are formed by being connected approximately vertically. Figure 3The second radial branch 121 is shown in an "L" shape. The end of the third sub-radial branch 121a furthest from the fourth sub-radial branch 121b is the fourth end D4 of the second radial branch 121, and the end of the fourth sub-radial branch 121b furthest from the third sub-radial branch 121a is the third end D3 of the second radial branch 121. That is, as shown... Figure 3 As shown, the fourth sub-radial branch 121b is connected between the third sub-radial branch 121a and the first radial branch 111, and the length direction of the fourth sub-radial branch 121b is parallel to the length direction of the first radial branch 111.

[0050] Similarly, the first radiating branch 111 and the second radiating branch 121 can be integrally formed, with the bent structure formed only at the connection point of the third sub-radiating branch 121a and the fourth sub-radiating branch 121b. In some embodiments, the third end D3 of the "L"-shaped second radiating branch 121 can be fixedly connected to the second end D2 of the straight first radiating branch 111 by welding or other means.

[0051] Please see Figure 4 This is yet another structural schematic diagram of the antenna assembly 1 in one example of some embodiments of this application. For example... Figure 4 As shown, in some embodiments, the first radial branch 111 and the second radial branch 121 are both straight strips and are formed by being connected approximately perpendicularly. Figure 4 The "L"-shaped structure shown.

[0052] Similarly, in some embodiments, the first radiating branch 111 and the second radiating branch 121 may be integrally formed, with the bent structure formed only at the connection point between the first radiating branch 111 and the second radiating branch 121. In some embodiments, the second end D2 of the first radiating branch 111 and the third end D3 of the second radiating branch 121 may also be fixedly connected by welding or other means.

[0053] in, Figure 3 and Figure 4 For the purpose of further illustrating that when the first radial branch 111 and the second radial branch 121 form a bent structure, one of the first radial branch 111 and the second radial branch 121 may be straight and the other may be bent, or both the first radial branch 111 and the second radial branch 121 may be straight. The shape and structure of the first radial branch 111 and the second radial branch 121 are also applicable to any of the following embodiments.

[0054] In other embodiments, both the first radial branch 111 and the second radial branch 121 may be straight strips, and the first radial branch 111 and the second radial branch 121 are arranged along their length directions to form a straight structure, with the third end D3 of the second radial branch 121 connected to the second end D2 of the first radial branch 111. The length direction of the first radial branch 111 and the second radial branch 121 is the extension direction of their longest sides.

[0055] In some embodiments, such as Figure 1 As shown in the figure, the first radiating element 11 includes only the first radiating branch 111, and the second radiating element 12 includes only the second radiating branch 121. The electrical length of both the first radiating branch 111 and the second radiating branch 121 is λ1 / 4.

[0056] That is, in some embodiments, the first radiating unit 11 includes only the first radiating branch 111, and the second radiating unit 12 includes only the second radiating branch 121. The electrical length of the first radiating unit 11 is the same as the electrical length of the first radiating branch 111, and the electrical length of the second radiating unit 12 is the same as the electrical length of the second radiating branch 121, and both are λ1 / 4. The total electrical length of the first radiating branch 111 and the second radiating branch 121, i.e., the overall electrical length, is λ1 / 2.

[0057] In some embodiments, the electrical lengths of the first radiating branch 111 and the second radiating branch 121 are approximately equal to their lengths. Therefore, in some embodiments, the lengths of the first radiating branch 111 and the second radiating branch 121 are approximately equal, and the connection position of the first radiating branch 111 and the second radiating branch 121 may also be the midpoint of the overall length of the first radiating branch 111 and the second radiating branch 121, that is, the position equidistant from the first end D1 or the fourth end D4.

[0058] Please see Figure 5 This is a schematic diagram of the structure of antenna assembly 1 in some embodiments of this application in another example. Figure 5As shown, in some embodiments, the antenna assembly 1 further includes a grounding member 14, which is connected between the connection point P0 of the first radiating stub 111 and the second radiating stub 121 and ground. The connection point P0 of the first radiating stub 111 and the second radiating stub 121 is also the position of the second end D2 of the first radiating stub 111 or the third end D3 of the second radiating stub 121, which is also the midpoint of the overall electrical length of the first radiating element 11 and the second radiating element 12.

[0059] Therefore, the middle position of the overall electrical length of the first radiating unit 11 and the second radiating unit 12 is grounded through the grounding member 14, which can better satisfy the boundary conditions of the equilibrium mode, that is, the middle position is the current peak, while the first end D1 of the first radiating branch 111 and the fourth end D4 of the second radiating branch 121 are the current zero points.

[0060] As mentioned earlier, by stimulating the balanced mode, the current flowing through the connection point P0 between the first radiating stub 111 and the second radiating stub 121 will not flow to the metal ground, but will almost entirely flow into the second radiating stub 121. This avoids the problem in existing methods where the excitation current flows to the metal ground, causing the antenna pattern to deviate significantly from the desired direction when participating in radiation through the metal ground. Therefore, in some embodiments, when the middle position of the overall electrical length of the first radiating element 11 and the second radiating element 12 is grounded through the grounding member 14, the balanced mode can be effectively excited without the excitation current flowing to the metal ground.

[0061] The addition of a grounding element at the midpoint of the overall electrical length of the first radiating element 11 and the second radiating element 12 is solely to better satisfy the boundary condition that the current at the midpoint is at its maximum when the antenna is in balanced mode. However, this does not mean that the balanced mode of the antenna cannot be excited without a ground return. Obviously, in some embodiments, such as... Figure 1 As shown in the figure, when the electrical length of the first radiating element 11 and the second radiating element 12 is ensured to be λ1 / 4, the balanced mode of the antenna can be effectively excited, and the boundary condition that the current peak is at the middle position and the current zero point is at the first end D1 of the first radiating branch 111 and the fourth end D4 of the second radiating branch 121 is also satisfied can be satisfied.

[0062] The grounding component 14 can be an electrical connector such as a conductive wire, an FPC (flexible printed circuit board), a metal spring, or solder. In some embodiments, the feed source 13 can also be connected to the feed point F1 via a feed wire, which can also be an electrical connector such as a conductive wire, an FPC, a metal spring, or solder.

[0063] Please see Figure 6 The image shows a schematic diagram of the antenna assembly 1 in another example of some embodiments of this application. In some embodiments, at least one of the first radiating element 11 and the second radiating element 12 further includes a matching unit 15. When the first radiating element 11 or the second radiating element 12 includes the matching unit 15, the matching unit 15 is used to perform impedance matching adjustment on the first radiating stub 111 or the second radiating stub 121. The sum of the equivalent electrical length of the matching unit 15 and the electrical length of the first radiating stub 111 or the second radiating stub 121 is equal to λ1 / 4.

[0064] That is, in some embodiments, at least one of the first radiating unit 11 and the second radiating unit 12 further includes a matching unit 15. When performing impedance matching adjustment, the matching unit 15 can be equivalent to a portion of the electrical length. Thus, the electrical length of at least one of the first radiating branch 111 and the second radiating branch 121 can be less than λ1 / 4, which can effectively reduce the size of at least one of the first radiating branch 111 and the second radiating branch 121, thereby reducing the overall volume.

[0065] In some embodiments, when the first radiating unit 11 includes the matching unit 15, the matching unit 15 is connected between the feed point F1 and the feed source 13. When the second radiating unit 12 includes the matching unit 15, the matching unit 15 is connected between a preset position P1 of the second radiating branch 121 and ground, the preset position P1 being the position between the third end D3 and the fourth end D4 of the second radiating branch 121. In some embodiments, the preset position P1 is any position on the second radiating branch 121 other than the third end D3 and the fourth end D4. Preferably, the feed point F1 may be located near the first end D1 of the first radiating branch 111, and the preset position P1 may be located near the fourth end of the second radiating branch 121.

[0066] in, Figure 6 The diagram illustrates the structure where both the first radiating unit 11 and the second radiating unit 12 include a matching unit 15, as shown below. Figure 6 As shown, one matching unit 15 is connected between the feed point F1 and the feed source 13, and the other matching unit 15 is connected between the preset position P1 of the second radiating branch 121 and the ground.

[0067] In some embodiments, the matching unit 15 may include elements such as inductors and / or capacitors. When the first radiating unit 11 includes the matching unit 15, the matching unit 15 may have an equivalent partial electrical length, and the sum of the equivalent electrical length of the matching unit and the current electrical length of the first radiating branch 111 satisfies λ1 / 4. Similarly, when the second radiating unit 12 includes the matching unit 15, the matching unit 15 may have an equivalent partial electrical length, and the sum of the equivalent electrical length of the matching unit and the current electrical length of the second radiating branch 121 satisfies λ1 / 4.

[0068] Please see Figure 7 This is a schematic diagram of the antenna assembly 1 in another example of some embodiments of this application. In some embodiments, at least one of the first radiating element 11 and the second radiating element 12 further includes a matching unit 15, and the antenna assembly further includes a grounding element 14, which is connected between the connection point P0 of the first radiating stub 111 and the second radiating stub 121 and ground.

[0069] That is, in some embodiments, where at least one of the first radiating element 11 and the second radiating element 12 further includes a matching element 15, the antenna assembly also includes a grounding element 14.

[0070] Therefore, as mentioned above, the electrical length of at least one of the first radiating branch 111 and the second radiating branch 121 can be less than λ1 / 4, which can effectively reduce the size of at least one of the first radiating branch 111 and the second radiating branch 121, thereby reducing the overall volume. Furthermore, as mentioned above, the connection position P0 of the first radiating branch 111 and the second radiating branch 121 is the midpoint of the overall electrical length of the first radiating unit 11 and the second radiating unit 12. Therefore, the midpoint of the overall electrical length of the first radiating unit 11 and the second radiating unit 12 is grounded through the grounding member 14, which better satisfies the boundary conditions of the equilibrium mode. That is, the midpoint is the current peak, while the first end D1 of the first radiating branch 111 and the fourth end D4 of the second radiating branch 121 are the current zero points.

[0071] In some embodiments, the feed source 13 is further configured to feed a second feed signal through the feed point F1, wherein the electrical length between the feed point F1 and the first terminal D1 of the first radiating stub 111 is λ2 / 4, where λ2 is the wavelength corresponding to the second frequency band supported by the antenna assembly 1 under the excitation of the second feed signal. That is, in some embodiments, the feed source 13 can simultaneously output the first feed signal and the second feed signal, thereby simultaneously exciting electromagnetic wave signals of two frequency bands.

[0072] That is, in some embodiments, the electrical length between the feed point F1 and the first end D1 of the first radiating stub 111 can be designed to be λ2 / 4, thereby enabling the antenna assembly 1 to further support the second frequency band under the excitation of the second feed signal. Thus, the antenna assembly 1 can achieve coverage of multiple frequency bands.

[0073] In some embodiments, the antenna assembly 1 further supports a second frequency band under the excitation of the second feed signal. Specifically, the first radiating stub 111 may support the second frequency band under the excitation of the second feed signal. More specifically, the portion between the feed point F1 and the first terminal D1 of the first radiating stub 111 may support the second frequency band under the excitation of the second feed signal. For example, the portion between the feed point F1 and the first terminal D1 of the first radiating stub 111 may resonate at the center frequency corresponding to the second frequency band, thereby supporting the transmission and reception of electromagnetic wave signals in the second frequency band.

[0074] In some embodiments, the first frequency band is the GPS frequency band, and the second frequency band is the N78 frequency band or the WiFi 5G frequency band.

[0075] That is, in some embodiments, the antenna assembly 1 may support the GPS frequency band and the N78 frequency band, or the antenna assembly 1 may support the GPS frequency band and the WiFi 5G frequency band.

[0076] Obviously, the second frequency band can also be other frequency bands, such as other frequency bands with higher frequencies than the first frequency band, such as the Bluetooth 5G frequency band, the N79 frequency band, etc. The electrical length between the feed point F1 of the first radiating branch 111 and the first end D1 can be designed to be 1 / 4 of the wavelength corresponding to the frequency band.

[0077] In some embodiments, the first frequency band is a GPS frequency band, and may be a GPS-L1, GPS-L2, or GPS-L5 frequency band.

[0078] The antenna assembly 1 further supports the second frequency band under the excitation of the second feed signal. This can be implemented in the structure of the antenna assembly 1 shown in any of the foregoing embodiments. It is only necessary to design the electrical length between the feed point F1 and the first end D1 of the first radiating branch 111 of the antenna assembly 1 in any of the foregoing embodiments to be λ2 / 4.

[0079] In some embodiments, the feed source 13 may be a feed signal source obtained by a radio frequency front-end circuit (not shown) mixing the first feed signal and the second feed signal through a combiner (not shown). In other embodiments, the feed source 13 may also include two feed sources, which are used to output the first feed signal and the second feed signal, respectively.

[0080] The first radiating branch 111 and the second radiating branch 121 can be made of conductive materials such as metal.

[0081] In some embodiments, the antenna assembly 1 may also include the aforementioned metallic ground, which can reflect the first radiating stub 111 and the second radiating stub 121 to a certain extent, thereby improving radiation performance. Thus, by having the metallic ground provide a certain degree of reflection, radiation performance can be effectively improved.

[0082] Therefore, the antenna assembly 1 of this application, by designing two radiating elements with an electrical length of λ1 / 4, can effectively excite the balanced mode through the two radiating elements with an electrical length of λ1 / 4, so that it does not need to participate in the radiation through the metal ground, thereby ensuring that the antenna pattern matches the desired direction and effectively improving the overall radiation performance of the antenna.

[0083] Please see Figure 8 This is a structural block diagram of an electronic device 100 in some embodiments of this application. Wherein, as shown... Figure 8 As shown, the electronic device 100 may include the antenna assembly 1 described in any of the foregoing embodiments. Therefore, when the electronic device 100 is equipped with the antenna assembly 1 in any of the foregoing embodiments, it does not need to participate in radiation through the metal ground of the electronic device 100, thereby ensuring that the antenna pattern matches the desired direction and effectively improving the overall radiation performance of the antenna.

[0084] Please see Figure 9 This is a plan view of an electronic device 100 in some embodiments of this application. Wherein, as... Figure 9 As shown, the electronic device 100 also includes a display screen 2. Figure 9 This is a top view schematically illustrating the structure of the antenna assembly 1 as seen from the display screen 2 of the electronic device 100. The front... Figure 1 as well as Figures 3-7 The antenna assembly 1 shown in the figure can also be the antenna assembly 1 viewed from the side of the display screen 2 of the electronic device 100.

[0085] The electronic device 100 further includes a frame B1, and the first radiating branch 111 and the second radiating branch 121 are disposed on the frame B1 of the electronic device 100 and are spaced apart by a gap X1.

[0086] In some embodiments, the frame B1 of the electronic device 100 is a metal frame, and the first radiating branch 111 and the second radiating branch 121 are metal frame segments formed by opening the gap X1 in the metal frame of the electronic device 100.

[0087] In some other embodiments, the frame B1 of the electronic device 100 is a non-metallic frame, the first radiating branch 111 and the second radiating branch 121 are metal segments disposed in the frame of the electronic device 100, and the power supply branch 11 and the parasitic branch 12 are spaced apart by the gap X1.

[0088] That is, in some other embodiments, the frame B1 of the electronic device 100 may also be a non-metallic frame with low conductivity, such as plastic, ceramic, etc. The first radiating branch 111 and the second radiating branch 121 are metal segments disposed in the frame B1 of the electronic device 100.

[0089] The first radiating branch 111 and the second radiating branch 121 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.

[0090] like Figure 9 As shown, the frame B1 includes two opposing long frames B11 and two opposing short frames B12. In some embodiments, the antenna assembly 1 may be disposed on adjacent long frames B11 and short frames B12 of the electronic device 100, that is, the first radiating stub 111 and the second radiating stub 121 are disposed on adjacent long frames B11 and short frames B12. Figure 9 For the electronic device 100 to include Figure 1 The diagram illustrates an example of antenna assembly 1. In other embodiments, when the first radiating stub 111 and the second radiating stub 121 have a linear structure, the first radiating stub 111 and the second radiating stub 121 may also be disposed on one of the short frame B12 or one of the long frame B11.

[0091] The arrangement direction of the first radial branch 111 and the second radial branch 121 can be approximately parallel to the extension direction of the long frame B11.

[0092] In some embodiments, the first radiating branch 111 and the second radiating branch 121 are both elongated, and the surface with the largest area of ​​the first radiating branch 111 and the second radiating branch 121 is a surface parallel to the frame surface of the frame B1, wherein the frame surface of the frame B1 is substantially perpendicular to the plane of the display screen 2 of the electronic device 100.

[0093] Among them, such as Figure 9 The electronic device 100 includes a top D11, a bottom D12, and two side edges D13 and D14. The two long borders B11 are the borders located on the two side edges D13 and D14 of the electronic device 100, respectively, and the two short borders B12 are the borders located on the top D11 and bottom D12 of the electronic device 100, respectively.

[0094] 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 D12 of the electronic device 100 is the end with a headphone jack and a charging port (e.g., a USB port), and the top D11 of the electronic device 100 is the opposite end to the end with the headphone jack and charging port, or it may refer to the end with a camera, receiver, etc.

[0095] In some embodiments, at least a portion of the first radiating branch 111 is disposed on the short frame B12 of the electronic device 100 located at the top D11, and at least a portion of the second radiating branch 121 is disposed on the long frame B11 of the electronic device 100 located on the side, with the second radiating branch 121 being further away from the top D11 of the electronic device 100 than the first radiating branch 111. Thus, the second radiating branch 121 and the first radiating branch 111 are arranged generally along a direction from the bottom D12 to the top D11 of the electronic device 100.

[0096] As mentioned above, since the first radiating stub 111 connected to the feed 13 plays a major radiating role, the side where the first radiating stub 111 is located can be the side where the desired antenna pattern points. Therefore, if the second radiating stub 121 and the first radiating stub 111 are arranged approximately along the direction from the bottom D12 to the top D11 of the electronic device 100, the antenna pattern can be directed towards the top D11 of the electronic device 100. Thus, when the first frequency band supported by the antenna assembly 1 is the GPS band, it can effectively ensure that when the user is using the electronic device 100 normally, the antenna pattern is pointing upwards, thereby ensuring communication quality with GPS satellites in the sky above and improving antenna performance.

[0097] In some embodiments, when the first radiating branch 111 and the second radiating branch 121 are in a straight-line structure, the first radiating branch 111 and the second radiating branch 121 may be disposed on the short frame B12 of the electronic device 100 located at the top D11.

[0098] Therefore, in some embodiments, the antenna assembly 1 of this application may be disposed at the top D11 of the electronic device 100 or at a position close to the top D11.

[0099] in, Figure 9 China as the basis Figure 1 The diagram illustrates the structure of antenna assembly 1 as an example. Specifically, the first radiating stub 111 is bent, and the second radiating stub 121 is straight. The first radiating stub 111 includes a first sub-radiating stub 111a and a second sub-radiating stub 111b, which are straight and connected approximately perpendicularly. Figure 9 The first radiating branch 111 is shown in an "L" shape. The end of the first sub-radiating branch 111a furthest from the second sub-radiating branch 111b is the first end D1 of the first radiating branch 111, and the first sub-radiating branch 111a is located on the short frame B12 of the electronic device 100 at the top D11. The end of the second sub-radiating branch 111b furthest from the first sub-radiating branch 111a is the second end D2 of the first radiating branch 111, and the second sub-radiating branch 111b is located on the long frame B11 of the electronic device 100 at the side. The second radiating branch 121 is located on and connected to the long frame B11 where the second sub-radiating branch 111b is located.

[0100] Therefore, the first sub-radiating branch 111a and the second sub-radiating branch 111b can be located at the top corner of the electronic device 100, which can effectively avoid occupying too much space of the electronic device 100 and achieve a better radiation effect.

[0101] Wherein, the first radiating branch 111 and the second radiating branch 121 may also be Figure 3 or Figure 4 The structure in, for example, such as Figure 4 In the structure shown, the first radiating branch 111 and the second radiating branch 121 are straight strips, and are respectively disposed on the short frame B12 located at the top D11 and the long frame B11 located on the side of the electronic device 100.

[0102] like Figure 9 As shown, the electronic device 100 also includes a motherboard 101, wherein the aforementioned feed source 13 and matching unit 15, etc., may be disposed on the motherboard 101. The aforementioned metal ground, etc., may be a metal ground layer on the motherboard 101, and the aforementioned grounding member 14 may be electrically connected to the metal ground layer on the motherboard 101 for grounding.

[0103] Among them, such as Figure 9 As shown, the electronic device 100 also includes a mid-frame 102, which supports structures such as a display screen and serves as the overall ground. The metal ground layer on the motherboard 101 is connected to the mid-frame 102 to provide ground potential. The aforementioned metal ground can also refer to the mid-frame 102. The aforementioned grounding component 14 can also be directly electrically connected to the mid-frame 102 for grounding.

[0104] In some embodiments, the first radiating branch 111 and the second radiating branch 121 may also be fixed to an antenna bracket made of insulating material and fixed to the electronic device 100 by the antenna bracket.

[0105] For example, the first radiating branch 111 and the second radiating branch 121 may be an FPC (flexible printed circuit) fixed on the antenna bracket or an LDS (Laser-Direct-structuring) metal segment formed on the antenna bracket by laser engraving technology, or a PDS metal segment formed on the antenna bracket by PDS (Printing Direct Structure) technology (for example, forming a metal segment by printing conductive ink, conductive silver paste, etc. on the antenna bracket 8), and fixed in the electronic device 100 by the antenna bracket.

[0106] That is, in some other embodiments, the first radiating branch 111 and the second radiating branch 121 are fixedly disposed on the antenna bracket formed of insulating material, and then fixed to the electronic device 100 by the antenna bracket.

[0107] The first radiating branch 111 and the second radiating branch 121 can be fixed to the motherboard 101 of the electronic device 100 by the antenna bracket.

[0108] Please see Figure 10 This is a schematic diagram illustrating the return loss and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 10 For Figure 9 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 band as an example, the return loss and overall system efficiency are obtained from simulation tests.

[0109] in, Figure 10 The diagram illustrates the return loss curve S11-1 and the overall system efficiency curve St1. The resonant frequency of GPS L1 is approximately 1.575 GHz. As shown in the diagram, at this resonant frequency, the return loss corresponding to curve S11-1 is approximately -22 dB, which is very low. The overall system efficiency corresponding to curve St1 is approximately -0.1 dB, indicating a relatively high overall system efficiency.

[0110] Please see Figure 11 The diagram shows a three-dimensional radiation pattern, an antenna cross-sectional view, and a schematic diagram of the upper hemisphere proportion of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 11 Similarly, for Figure 9 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 frequency band as an example, the three-dimensional radiation pattern, antenna directional cross-section diagram and upper hemisphere proportion diagram obtained by simulation test are shown.

[0111] in, Figure 11 The diagram also illustrates a three-dimensional radiation pattern T11, an antenna directional cross-sectional view T21, and an upper hemisphere proportion view T31. The three-dimensional radiation pattern is an antenna directional cross-sectional view taken from a plane parallel to the display screen 2 of the electronic device 100. The three-dimensional radiation pattern T11 can be a schematic diagram viewed from the front of the electronic device 100, i.e., the side where the display screen 2 is located, while the antenna directional cross-sectional view T21 can be a schematic diagram viewed from the back of the electronic device 100.

[0112] Among them, from Figure 11As can be seen from the three-dimensional radiation pattern T11 and the antenna directional cross-section T21, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, this structure effectively ensures that the antenna radiation pattern is toward the top D11 of the electronic device.

[0113] The upper hemisphere proportion diagram T31 illustrates the total radiated energy A11 and the upper hemisphere radiated energy A21. The smaller the absolute value of the difference between the upper hemisphere radiated energy and the total radiated energy, the closer the upper hemisphere radiated energy is to the total radiated energy, and the higher the upper hemisphere proportion. The upper hemisphere proportion refers to the upper hemisphere radiated energy, that is, the ratio of the radiated energy of the antenna assembly 1 towards the top D11 of the electronic device 100 to the total radiated energy of the antenna assembly 1 in all directions.

[0114] like Figure 11 As shown, at the resonant frequency of 1.575 GHz, the total radiated energy A11 is approximately -0.4 dB, and the upper hemisphere radiated energy A21 is approximately -2.3 dB, with a difference of -1.9 dB. In contrast, under conventional methods of radiation via metallic ground, the difference between the upper hemisphere radiated energy A21 and the total radiated energy A11 is approximately -3 dB. Therefore, it can be seen that the structure of the antenna component 1 of this application can effectively increase the proportion of the upper hemisphere.

[0115] Please see Figure 12 This is another planar schematic diagram of the electronic device 100 in some embodiments of this application. Figure 12 The electronic device 100 shown is a device that includes Figure 5 The structure of antenna assembly 1 shown is illustrated using an example. Figure 5 and Figure 12 As shown, in some embodiments, the antenna assembly 1 further includes a grounding element 14, which is connected between the connection point P0 of the first radiating stub 111 and the second radiating stub 121 and the ground.

[0116] in, Figure 12 Structure and Figure 9 The difference lies in the fact that grounding is further achieved through the grounding component 14; for other structural positions, please refer to [link / reference needed]. Figure 9 The relevant content will not be repeated here.

[0117] Please see Figure 13 This is a schematic diagram illustrating another return loss and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 13 For Figure 12Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 band as an example, the return loss and overall system efficiency are obtained from simulation tests.

[0118] in, Figure 13 The diagram illustrates the return loss curve S11-2 and the overall system efficiency curve St2. The resonant frequency of GPS L1 is approximately 1.575 GHz. As shown in the diagram, at this resonant frequency, the return loss corresponding to curve S11-2 is approximately -17 dB, which is very low. The overall system efficiency corresponding to curve St1 is approximately -0.2 dB, which is also relatively high.

[0119] Please see Figure 14 This is a three-dimensional radiation pattern and a cross-sectional view of the antenna assembly 1 of the electronic device 100 in some embodiments of this application at 1.57 GHz. Figure 14 For Figure 12 Taking the structure of the electronic device 100 shown, and the first frequency band supported by the antenna assembly 1 being the GPS L1 band, and operating at a frequency of 1.57 GHz as an example, the three-dimensional radiation pattern and antenna directional cross-section diagram obtained from the simulation test are shown.

[0120] The figure illustrates the three-dimensional radiation pattern T12 and the antenna cross-sectional view T22. From... Figure 14 As can be seen from the three-dimensional radiation pattern T12 and the antenna directional cross-section T22, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, this structure effectively ensures that when operating at 1.57 GHz, the antenna radiation pattern is toward the top D11 of the electronic device.

[0121] Please see Figure 15 This is a three-dimensional radiation pattern and a cross-sectional view of the antenna assembly 1 of the electronic device 100 in some embodiments of this application at 1.575 GHz. Figure 15 For Figure 12 Taking the structure of the electronic device 100 shown, and the first frequency band supported by the antenna assembly 1 being the GPS L1 band, and operating at a frequency of 1.575 GHz as an example, the three-dimensional radiation pattern and antenna directional cross-section diagram obtained from the simulation test are shown.

[0122] The figure illustrates the three-dimensional radiation pattern T13 and the antenna cross-sectional view T23. From... Figure 15As can be seen from the three-dimensional radiation pattern T13 and the antenna cross-sectional view T23, the antenna direction of the electronic device 100 is approximately towards the top D11 of the electronic device 100. Thus, this structure effectively ensures that when operating at 1.575 GHz, the antenna radiation pattern is oriented towards the top D11 of the electronic device.

[0123] Please see Figure 16 This is a schematic diagram showing the upper hemisphere proportion of the antenna assembly 1 of the electronic device 100 at 1.58 GHz in some embodiments of this application. Figure 16 Similarly, for Figure 12 Taking the structure of the electronic device 100 shown, and the antenna assembly 1 supporting the first frequency band of GPS L1 and operating at the frequency of 1.58 GHz as an example, the three-dimensional radiation pattern and antenna directional cross-section diagram obtained by simulation test are shown.

[0124] in, Figure 16 The diagram illustrates the three-dimensional radiation pattern T14 and the antenna cross-sectional view T24. From... Figure 16 As can be seen from the three-dimensional radiation pattern T14 and the antenna directional cross-section T24, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, this structure effectively ensures that when operating at 1.58 GHz, the antenna radiation pattern is toward the top D11 of the electronic device.

[0125] Please see Figure 17 This is a schematic diagram showing the proportion of the upper hemisphere of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 17 Similarly, for Figure 12 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 frequency band as an example, and the upper hemisphere ratio obtained by simulation test when operating at multiple frequency points.

[0126] in, Figure 17 The diagram illustrates the total radiant energy A12 and upper hemisphere radiant energy A22 at 1.57 GHz, the total radiant energy A13 and upper hemisphere radiant energy A23 at 1.575 GHz, and the total radiant energy A14 and upper hemisphere radiant energy A24 at 1.58 GHz.

[0127] from Figure 17It can be seen that at 1.57 GHz, the total radiant energy A12 is approximately -0.2 dB, and the upper hemisphere radiant energy A22 is approximately -2.25 dB, with a difference of -2.05 dB; at 1.575 GHz, the total radiant energy A13 is approximately -0.2 dB, and the upper hemisphere radiant energy A23 is approximately -2.3 dB, with a difference of -2.1 dB; at 1.58 GHz, the total radiant energy A14 is approximately -0.25 dB, and the upper hemisphere radiant energy A24 is approximately -2.35 dB, with a difference of -2.1 dB. As mentioned earlier, in the existing method of radiation through metallic ground, the difference between the upper hemisphere radiant energy A2 and the total radiant energy A1 is approximately -3 dB, and the smaller the absolute value of this difference, the higher the proportion of the upper hemisphere. Therefore, it can be seen that through... Figure 14 The structure shown can effectively increase the proportion of the upper hemisphere at multiple frequency points / frequency points.

[0128] Generally, the resonant frequency of the GPS L1 band is 1.575 GHz. In this application, through... Figure 12 The structure of the antenna assembly 1 included in the electronic device 100 shown has antenna patterns at 1.57 GHz and 1.58 GHz that are basically oriented towards the top D11 of the electronic device 100, and the upper hemisphere accounts for a relatively high proportion, effectively widening the bandwidth.

[0129] Please see Figure 18 This is yet another plan view of the electronic device 100 in some embodiments of this application. Wherein, Figure 18 The electronic device 100 shown is a device that includes Figure 6 The structure of antenna assembly 1 shown is illustrated using an example. Figure 6 and Figure 18 As shown, in some embodiments, at least one of the first radiation unit 11 and the second radiation unit 12 further includes a matching unit 15. Wherein, Figure 6 and Figure 18 The illustration shows that both the first radiation unit 11 and the second radiation unit 12 include a matching unit 15.

[0130] in, Figure 18 Structure and Figure 9 The difference lies in that at least one of the first radiating unit 11 and the second radiating unit 12 further includes a matching unit 15, the equivalent electrical length of which, together with the electrical length of the first radiating branch 111 or the second radiating branch 121, equals λ1 / 4, thereby effectively reducing the size of the first radiating branch 111 and / or the second radiating branch 121; other structural positional relationships can be found in [reference needed]. Figure 9 The relevant content will not be repeated here.

[0131] Please see Figure 19 This is another schematic diagram showing the return loss and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 19 For Figure 18 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 band as an example, the return loss and overall system efficiency are obtained from simulation tests.

[0132] in, Figure 19 The diagram illustrates the return loss curve S11-3 and the overall system efficiency curve St3. The resonant frequency of GPS L1 is approximately 1.575 GHz. As shown in the diagram, at this resonant frequency, the return loss corresponding to curve S11-1 is approximately -17.5 dB, which is very low. The overall system efficiency corresponding to curve St1 is approximately -2 dB, indicating a relatively high overall system efficiency.

[0133] Please see Figure 20 This is yet another three-dimensional radiation pattern, antenna cross-sectional view, and upper hemisphere proportion diagram of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 20 Similarly, for Figure 18 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 frequency band as an example, the three-dimensional radiation pattern, antenna directional cross-section diagram and upper hemisphere proportion diagram obtained by simulation test are shown.

[0134] in, Figure 20 The diagram also shows the three-dimensional radiation pattern T15, the antenna directional cross-section diagram T25, and the upper hemisphere proportion diagram T32.

[0135] Among them, from Figure 20 As can be seen from the three-dimensional radiation pattern T15 and the antenna directional cross-section T25, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, this structure can effectively ensure that the antenna radiation pattern is toward the top D11 of the electronic device.

[0136] The diagram T32, showing the proportion of the upper hemisphere, illustrates the total radiant energy A15 and the upper hemisphere radiant energy A25. For example... Figure 20 As shown, at the resonant frequency of 1.575 GHz, the total radiated energy A15 is approximately -0.3 dB, and the upper hemisphere radiated energy A25 is approximately -2.1 dB, with a difference of -1.8 dB. However, as mentioned earlier, under normal circumstances, in existing methods using metallic ground radiation, the difference between the upper hemisphere radiated energy A25 and the total radiated energy A15 is approximately -3 dB. Therefore, it can be seen that through... Figure 18The structure of the antenna assembly 1 included in the electronic device 100 shown can effectively increase the proportion of the upper hemisphere.

[0137] Please see Figure 21 This is another planar schematic diagram of the electronic device 100 in some embodiments of this application. Figure 21 The electronic device 100 shown is a device that includes Figure 7 The structure of antenna assembly 1 shown is illustrated using an example. Figure 7 and Figure 21 As shown, in some embodiments, at least one of the first radiating element 11 and the second radiating element 12 further includes a matching unit 15, and the antenna assembly further includes a grounding element 14 connected between the connection point P0 of the first radiating stub 111 and the second radiating stub 121 and ground. That is, in some embodiments, when at least one of the first radiating element 11 and the second radiating element 12 further includes a matching unit 15, the antenna assembly further includes a grounding element 14.

[0138] Regarding the matching unit 15, Figure 7 and Figure 21 The diagram also illustrates that both the first radiation unit 11 and the second radiation unit 12 include a matching unit 15.

[0139] in, Figure 21 Structure and Figure 9 The difference lies in that at least one of the first radiating unit 11 and the second radiating unit 12 further includes a matching unit 15, and the connection point P0 of the first radiating branch 111 and the second radiating branch 121 is also grounded through a grounding member 14; other structural positional relationships can be found in [reference needed]. Figure 9 The relevant content will not be repeated here.

[0140] Please see Figure 22 This is a schematic diagram illustrating the return loss and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 22 For Figure 21 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 band as an example, the return loss and overall system efficiency are obtained from simulation tests.

[0141] in, Figure 22 The diagram illustrates the return loss curve S11-4 and the overall system efficiency curve St4. The resonant frequency of GPS L1 is approximately 1.575 GHz. Figure 22As can be seen, at the resonant frequency of 1.575GHz, the return loss curve S11-4 corresponds to a return loss of approximately -10.5dB, which is very low; the system total efficiency curve St4 corresponds to a system total efficiency of approximately -1.5dB, which is relatively high.

[0142] Please see Figure 23 This is a three-dimensional radiation pattern, an antenna cross-sectional view, and a schematic diagram of the upper hemisphere proportion of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 23 Similarly, for Figure 21 Taking the structure of the electronic device 100 shown and the first frequency band supported by the antenna assembly 1 as the GPS L1 frequency band as an example, the three-dimensional radiation pattern, antenna directional cross-section diagram and upper hemisphere proportion diagram obtained by simulation test are shown.

[0143] in, Figure 23 The diagram also shows the three-dimensional radiation pattern T16, the antenna directional cross-section diagram T26, and the upper hemisphere proportion diagram T33.

[0144] Among them, from Figure 23 As can be seen from the three-dimensional radiation pattern T16 and the antenna directional cross-section T26, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, this structure can effectively ensure that the antenna radiation pattern is toward the top D11 of the electronic device.

[0145] The diagram T33, which shows the proportion of the upper hemisphere, illustrates the total radiant energy A16 and the upper hemisphere radiant energy A26. For example... Figure 23 As shown, at the resonant frequency of 1.575 GHz, the total radiated energy A16 is approximately -0.3 dB, and the upper hemisphere radiated energy A26 is approximately -2.1 dB, with a difference of -1.8 dB. However, as mentioned earlier, under normal circumstances, in existing methods using metallic ground radiation, the difference between the upper hemisphere radiated energy and the total radiated energy is approximately -3 dB. Therefore, it can be seen that... Figure 21 The structure of the antenna assembly 1 included in the electronic device 100 shown can also effectively increase the proportion of the upper hemisphere.

[0146] Please see Figure 24 This is a schematic diagram illustrating other return losses and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 24 For Figure 21The diagram illustrates the return loss and overall system efficiency obtained from simulation tests using the structure of the electronic device 100 shown, with the antenna assembly 1 supporting the GPS L1 band as the first frequency band and also supporting a second frequency band, specifically the N78 band. As mentioned earlier, when the electrical length between the feed point F1 and the first terminal D1 of the first radiating stub 111 is designed to be λ2 / 4, the antenna assembly 1 can further support the second frequency band under the excitation of the second feed signal. Here, λ2 is the wavelength corresponding to the second frequency band supported by the antenna assembly 1 under the excitation of the second feed signal; for example, when the second frequency band is the N78 band, it is the wavelength corresponding to the resonant frequency of the N78 band.

[0147] in, Figure 24 The diagram illustrates the return loss curve S11-5 and the overall system efficiency curve St5. The resonant frequency of GPS L1 is approximately 1.575 GHz, and the resonant frequency of the N78 band is approximately 3.55 GHz. From... Figure 24 As can be seen, at the resonant frequency of 1.575 GHz, the return loss corresponding to the return loss curve S11-5 is approximately -23 dB, which is very low; the system overall efficiency corresponding to the system overall efficiency curve St5 is approximately -0.1 dB, which is very high. At the resonant frequency of 3.55 GHz, the return loss corresponding to the return loss curve S11-5 is approximately -8 dB, which is relatively low; the system overall efficiency corresponding to the system overall efficiency curve St5 is approximately -1 dB, which is very high.

[0148] This shows that, Figure 21 In the structure of the electronic device 100 shown, and when the first frequency band supported by the antenna assembly 1 is the GPS L1 band, and the antenna assembly 1 also supports a second frequency band and the second frequency band is the N78 band, the return loss in both the first frequency band and the second frequency band is low, and the overall system efficiency is high.

[0149] Please see Figure 25 These are other three-dimensional radiation patterns, antenna cross-sectional views, and upper hemisphere proportion diagrams of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 25 Similarly, for Figure 21 Taking the structure of the electronic device 100 shown, and the first frequency band supported by the antenna assembly 1 being the GPS L1 band, and the second frequency band being the N78 band, as an example, the three-dimensional radiation pattern, antenna directional cross-section diagram, and upper hemisphere proportion diagram obtained by simulation test are shown.

[0150] in, Figure 25The diagram also shows the three-dimensional radiation pattern T17 of the GPS L1 band, the antenna directional cross-section diagram T27, and the upper hemisphere proportion diagram T34.

[0151] Among them, from Figure 25 As can be seen from the three-dimensional radiation pattern T17 and the antenna directional cross-section T27, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, when the antenna assembly 1 simultaneously supports the first frequency band and the second frequency band, and the second frequency band is the N78 frequency band, this structure can also effectively ensure that the antenna radiation pattern of the GPSL1 frequency band is toward the top D11 of the electronic device.

[0152] The diagram T34, showing the proportion of the upper hemisphere, illustrates the total radiant energy A17 and the upper hemisphere radiant energy A27. For example... Figure 25 As shown, at the resonant frequency of 1.575 GHz, the total radiated energy A17 is approximately -0.4 dB, and the upper hemisphere radiated energy A27 is approximately -2.3 dB, with a difference of -1.9 dB. Therefore, it can be seen that... Figure 21 The structure of the antenna assembly 1 included in the electronic device 100 shown, and when the antenna assembly 1 simultaneously supports a first frequency band and a second frequency band, and the second frequency band is the N78 frequency band, it can also effectively increase the first frequency band, that is, the upper hemisphere proportion of the GPS L1.

[0153] Please see Figure 26 This is a schematic diagram illustrating another return loss and overall system efficiency of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 26 For Figure 21 The diagram illustrates the return loss and overall system efficiency obtained from simulation tests using the structure of the electronic device 100 shown, with the antenna assembly 1 supporting the GPS L1 band as the first frequency band and also supporting a second frequency band, specifically the WiFi 5G band. As mentioned earlier, when the electrical length between the feed point F1 and the first terminal D1 of the first radiating stub 111 is designed to be λ2 / 4, the antenna assembly 1 can further support the second frequency band under the excitation of the second feed signal. Here, λ2 is the wavelength corresponding to the second frequency band supported by the antenna assembly 1 under the excitation of the second feed signal; for example, when the second frequency band is the WiFi 5G band, it is the wavelength corresponding to the resonant frequency of the WiFi 5G band.

[0154] in, Figure 26 The diagram illustrates the return loss curve S11-6 and the overall system efficiency curve St6. The resonant frequency of GPS L1 is approximately 1.575 GHz, and the resonant frequency of the WiFi 5G band is approximately 5.5 GHz. From... Figure 26 As can be seen, at the resonant frequency of 1.575 GHz, the return loss corresponding to the return loss curve S11-6 is approximately -17.5 dB, which is very low; the system overall efficiency corresponding to the system overall efficiency curve St6 is approximately -0.2 dB, which is very high. At the resonant frequency of 5.5 GHz, the return loss corresponding to the return loss curve S11-6 is approximately -17 dB, which is also very low; the system overall efficiency corresponding to the system overall efficiency curve St6 is approximately -0.1 dB, which is also very high.

[0155] This shows that, Figure 21 In the structure of the electronic device 100 shown, when the first frequency band supported by the antenna assembly 1 is the GPS L1 band, and the antenna assembly 1 also supports a second frequency band and the second frequency band is the WiFi 5G band, the return loss in both the first frequency band and the second frequency band is very low, and the overall system efficiency is very high.

[0156] Please see Figure 27 This is another three-dimensional radiation pattern, antenna cross-sectional view, and upper hemisphere proportion diagram of the antenna assembly 1 of the electronic device 100 in some embodiments of this application. Figure 27 Similarly, for Figure 21 Taking the structure of the electronic device 100 shown, with the first frequency band supported by the antenna assembly 1 being the GPS L1 band, and the second frequency band being the WiFi 5G band as an example, the three-dimensional radiation pattern, antenna directional cross-section diagram, and upper hemisphere proportion diagram obtained from simulation tests are shown.

[0157] in, Figure 27 The diagram also shows the three-dimensional radiation pattern T18 of the GPS L1 band, the antenna directional cross-section diagram T28, and the upper hemisphere proportion diagram T35.

[0158] Among them, from Figure 27 As can be seen from the three-dimensional radiation pattern T18 and the antenna directional cross-section T28, the antenna direction of the electronic device 100 is approximately toward the top D11 of the electronic device 100. Thus, when the antenna assembly 1 simultaneously supports the first frequency band and the second frequency band, and the second frequency band is the N78 frequency band, this structure can also effectively ensure that the antenna radiation pattern of the GPSL1 frequency band is toward the top D11 of the electronic device.

[0159] The diagram T35, showing the proportion of the upper hemisphere, illustrates the total radiant energy A18 and the upper hemisphere radiant energy A28. For example... Figure 27As shown, at the resonant frequency of 1.575 GHz, the total radiated energy A18 is approximately -0.5 dB, and the upper hemisphere radiated energy A28 is approximately -2.36 dB, with a difference of -1.86 dB. Therefore, it can be seen that... Figure 21 The structure of the antenna assembly 1 included in the electronic device 100 shown, and when the antenna assembly 1 simultaneously supports a first frequency band and a second frequency band, and the second frequency band is the WiFi 5G frequency band, it can also effectively increase the upper hemisphere proportion of the first frequency band, that is, the GPS L1.

[0160] The electronic device 100 can be any device including an antenna, such as a mobile phone, tablet computer, smartwatch, or laptop computer.

[0161] The antenna assembly 1 and electronic device 100 of this application, by designing two radiating elements, each with an electrical length of λ¹ / ⁴, can effectively excite a balanced mode through these two radiating elements, thus eliminating the need for a metal ground for radiation. This avoids the problem of significant deviation of the antenna pattern from the desired direction caused by radiation through a metal ground in existing methods, effectively improving the overall radiation performance of the antenna. Furthermore, the antenna assembly 1 and electronic device 100 of this application can effectively reduce the electrical length of radiating branches by configuring a matching unit, and can also support multiple frequency bands, effectively improving antenna utilization through a simple structure.

[0162] 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 in other embodiments.

[0163] 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 antenna assembly, characterized in that, include: The first radiating element includes a first radiating branch, which includes a first end, a second end, and a feed point. The first end is an open circuit end. The second radiating unit includes a second radiating branch, the second radiating branch includes a third end and a fourth end, the third end is connected to the second end of the first radiating branch, and the fourth end is an open circuit end; A feed source, connected to the feed point of the first radiating branch, is used to feed in a first feed signal through the feed point; The first radiating element and the second radiating element both have an electrical length of λ1 / 4, where λ1 is the wavelength corresponding to the first frequency band supported by the antenna assembly under the excitation of the first feed signal. Under the excitation of the first feed signal, the first radiating element and the second radiating element generate a current from the first end of the first radiating stub to the fourth end of the second radiating stub, thereby exciting the balanced mode through the first radiating element and the second radiating element.

2. The antenna assembly of claim 1, wherein, The first radiating branch and the second radiating branch together form a bent structure; and one of the first radiating branch and the second radiating branch is straight and the other is bent, or both the first radiating branch and the second radiating branch are straight.

3. The antenna assembly of claim 1, wherein, The first radiating element includes only the first radiating branch, and the second radiating element includes only the second radiating branch. The electrical length of both the first and second radiating branches is λ1 / 4.

4. The antenna assembly of claim 3, wherein, The antenna assembly further includes a grounding element, which is connected between the connection point of the first radiating stub and the second radiating stub and the ground.

5. The antenna assembly of claim 1, wherein, At least one of the first radiating unit and the second radiating unit further includes a matching unit. When the first radiating unit or the second radiating unit includes the matching unit, the matching unit is used to perform impedance matching adjustment on the first radiating stub or the second radiating stub. The sum of the equivalent electrical length of the matching unit and the electrical length of the first radiating stub or the second radiating stub is equal to λ1 / 4.

6. The antenna assembly of claim 5, wherein, When the first radiating unit includes the matching unit, the matching unit is connected between the feed point and the feed source; when the second radiating unit includes the matching unit, the matching unit is connected between a preset position of the second radiating branch and ground, the preset position being the position between the third end and the fourth end of the second radiating branch.

7. The antenna assembly of claim 5, wherein, The antenna assembly further includes a grounding element, which is connected between the connection point of the first radiating stub and the second radiating stub and the ground.

8. The antenna assembly of any of claims 1-7, wherein, The feed source is also used to feed a second feed signal through the feed point, and the electrical length between the feed point and the first end of the first radiating stub is λ2 / 4, where λ2 is the wavelength corresponding to the second frequency band supported by the antenna assembly under the excitation of the second feed signal.

9. The antenna assembly of claim 8, wherein, The second frequency band is either the N78 band or the WiFi 5G band.

10. The antenna assembly of claim 1, wherein, The first frequency band is the GPS frequency band.

11. The antenna assembly of claim 10, wherein, The GPS frequency band is GPS-L1, GPS-L2, or GPS-L5.

12. An electronic device, comprising: The electronic device includes an antenna assembly as described in any one of claims 1-11.

13. The electronic device according to claim 12, characterized in that, The electronic device also includes a frame, and the first radiating branch and the second radiating branch are disposed on the frame of the electronic device and are spaced apart by gaps.

14. The electronic device according to claim 13, characterized in that, The frame is a metal frame, and the first radiating branch and the second radiating branch are two metal frame segments formed by opening gaps in the metal frame of the electronic device.

15. The electronic device of claim 13, wherein, The frame is a non-metallic frame, and the first radiating branch and the second radiating branch are metal segments disposed in the frame of the electronic device.

16. The electronic device of claim 13, wherein, The border includes two opposing long borders and two opposing short borders, with the first radiating branch and the second radiating branch disposed on adjacent long and short borders.

17. The electronic device of claim 13, wherein, The antenna assembly is located on top of the electronic device and / or near the top of the electronic device.

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