Antenna assembly and electronic device

Abstract

The embodiment of the present application provides an electronic device, which comprises a first antenna unit and a second antenna unit. The first antenna unit comprises a first radiation branch and a first feed source. The second antenna unit comprises a second radiation branch, a third radiation branch and a second feed source, and the second radiation branch and the third radiation branch are adjacent and spaced. The first radiation branch is divided into a first radiation sub-branch and a second radiation sub-branch through a feed point. At least when the electronic device is in a preset state, the second radiation branch is adjacent and parallel to the first radiation sub-branch, and the third radiation branch is adjacent and parallel to the second radiation sub-branch. The first radiation branch generates a current with a first polarization direction under the excitation of the first feed source, and the second radiation branch and the third radiation branch generate a current with a second polarization direction perpendicular to the first polarization direction under the excitation of the second feed source. The present application also provides an antenna assembly. The present application can effectively improve the isolation between the antenna units.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an antenna assembly and an electronic device with the same. BACKGROUND

[0002] At present, with the popularization of 5G communication technology, people's communication experience is also getting better and better. With the popularization of full-screen and curved screens, the net space left for the antenna is getting smaller and smaller, and in some cases, multiple same-frequency antennas need to be set up to realize multiple input and output functions. However, there is a lot of interference between the same-frequency antennas. In order to increase the isolation between the same-frequency antennas, additional decoupling elements or setting the same-frequency antennas far apart are often used, which increases the cost or causes layout difficulties. SUMMARY

[0003] The present application provides an antenna assembly and an electronic device to solve the above problems.

[0004] In a first aspect, an electronic device is provided, which includes a first antenna unit and a second antenna unit. The first antenna unit includes a first radiating branch and a first feed source, the first radiating branch includes a feed point for connecting with the first feed source, and the first radiating branch works in a preset frequency band under the excitation of the first feed source. The second antenna unit includes a second radiating branch, a third radiating branch, and a second feed source, wherein the second radiating branch and the third radiating branch are adjacent and spaced apart, and the second feed source is connected with the second radiating branch and the third radiating branch, and the second radiating branch and the third radiating branch work in the preset frequency band under the excitation of the second feed source. Wherein the first radiating branch is divided into a first radiating sub-branch and a second radiating sub-branch through the feed point, and at least when the electronic device is in a preset state, the second radiating branch is adjacent and parallel to the first radiating sub-branch, and the third radiating branch is adjacent and parallel to the second radiating sub-branch; wherein the first radiating branch generates a current of a first polarization direction under the excitation of the first feed source, the second radiating branch and the third radiating branch generate a current of a second polarization direction under the excitation of the second feed source, and the first polarization direction and the second polarization direction are perpendicular.

[0005] In a second aspect, an antenna assembly is provided, which comprises a first antenna unit and a second antenna unit. The first antenna unit comprises a first radiating branch and a first feed source, the first radiating branch comprises a feed point for connecting with the first feed source, and the first radiating branch operates at a preset frequency band under the excitation of the first feed source. The second antenna unit comprises a second radiating branch, a third radiating branch and a second feed source, wherein the second radiating branch and the third radiating branch are arranged adjacent to and spaced apart from each other, and the second feed source is connected with both the second radiating branch and the third radiating branch, and the second radiating branch and the third radiating branch operate at the preset frequency band under the excitation of the second feed source. The first radiating branch is divided into a first radiating sub-branch and a second radiating sub-branch through the feed point, the second radiating branch is adjacent to and parallel to the first radiating sub-branch, and the third radiating branch is adjacent to and parallel to the second radiating sub-branch. The first radiating branch generates a current with a first polarization direction under the excitation of the first feed source, and the second radiating branch and the third radiating branch generate a current with a second polarization direction under the excitation of the second feed source, and the first polarization direction is perpendicular to the second polarization direction.

[0006] The electronic device and the antenna assembly of the present application can make the direction of the electromagnetic wave signal radiated by the first antenna unit and the direction of the electromagnetic wave signal radiated by the second antenna unit substantially perpendicular to each other, so that the electromagnetic wave signals radiated by the two antenna units do not interfere with each other, thereby greatly improving the isolation between the first antenna unit and the second antenna unit operating at the same preset frequency band. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0008] Figure 1 A plan view schematically showing part of the internal structure of the electronic device in an embodiment of the present application.

[0009] Figure 2 A schematic view of current distribution when the first antenna unit of the electronic device in some embodiments of the present application operates.

[0010] Figure 3 A schematic view of current distribution when the second antenna unit of the electronic device in some embodiments of the present application operates.

[0011] Figure 4A schematic diagram of current distribution on the ground plane when the first antenna element of the electronic device in some embodiments of the present application is in operation.

[0012] Figure 5 A schematic diagram of current distribution on the ground plane when the second antenna element of the electronic device in some embodiments of the present application is in operation.

[0013] Figure 6 A schematic diagram of return loss and total system efficiency of the first antenna element and the second antenna element of the electronic device in some embodiments of the present application.

[0014] Figure 7 A schematic diagram of return loss and isolation of the first antenna element and the second antenna element of the electronic device in some embodiments of the present application.

[0015] Figure 8 A schematic diagram of envelope correlation coefficient (ECC) curve of the first antenna element and the second antenna element of the electronic device in some embodiments of the present application.

[0016] Figure 9 Another plan view of the electronic device in some embodiments of the present application.

[0017] Figure 10 Another schematic diagram of current distribution when the first antenna element of the electronic device in some embodiments of the present application is in operation.

[0018] Figure 11 Another schematic diagram of current distribution when the second antenna element of the electronic device in some embodiments of the present application is in operation.

[0019] Figure 12 Yet another plan view of the electronic device in some embodiments of the present application.

[0020] Figure 13 Still another plan view of the electronic device in some embodiments of the present application.

[0021] Figure 14 Another schematic diagram of return loss and isolation of the first antenna element and the second antenna element of the electronic device in some embodiments of the present application.

[0022] Figure 15 Another schematic diagram of current distribution on the ground plane when the first antenna element of the electronic device in some embodiments of the present application is in operation.

[0023] Figure 16 Another schematic diagram of current distribution on the ground plane when the second antenna element of the electronic device in some embodiments of the present application is in operation.

[0024] Figure 17This is another plan view of an electronic device in some embodiments of this application.

[0025] Figure 18 This is a structural block diagram of an electronic device in some embodiments of this application. Detailed Implementation

[0026] 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.

[0027] 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 direct connection, indirect connection, and electrical connection, etc. 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., may be the same object.

[0028] Please see Figure 1 This is a schematic plan view 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 comprises a first antenna unit 1 and a second antenna unit 2. The first antenna unit 1 comprises a first radiating branch 11 and a first feed 12. The first radiating branch 11 comprises a feed point F1 for connecting with the first feed 12. The first radiating branch 11 works at a preset frequency band under the excitation of the first feed 12, i.e. supports the transmission and reception of electromagnetic wave signals at the preset frequency band. The second antenna unit 2 comprises a second radiating branch 21, a third radiating branch 22 and a second feed 23. The second radiating branch 21 and the third radiating branch 22 are adjacent and spaced apart. The second feed 23 is connected with the second radiating branch 21 and the third radiating branch 22. The second radiating branch 21 and the third radiating branch 22 work at the preset frequency band under the excitation of the second feed 23, i.e. also support the transmission and reception of electromagnetic wave signals at the preset frequency band. The first radiating branch 11 is divided into a first radiating sub-branch 111 and a second radiating sub-branch 112 through the feed point F1. At least when the electronic device 100 is in a preset state, the second radiating branch 21 is adjacent and parallel to the first radiating sub-branch 111, and the third radiating branch 22 is adjacent and parallel to the second radiating sub-branch 112. The first radiating branch 11 generates a current with a first polarization direction under the excitation of the first feed 12. The second radiating branch 21 and the third radiating branch 22 generate a current with a second polarization direction under the excitation of the second feed 23. The first polarization direction is perpendicular to the second polarization direction.

[0029] Therefore, the electronic device 100 of the present application can make the direction of the electromagnetic wave signals radiated by the first antenna unit 1 perpendicular to the direction of the electromagnetic wave signals radiated by the second antenna unit 2, so that the electromagnetic wave signals radiated by the first antenna unit 1 and the electromagnetic wave signals radiated by the second antenna unit 2 do not interfere with each other, thereby greatly improving the isolation between the first antenna unit 1 and the second antenna unit 2 working at the same preset frequency band.

[0030] In the present application, the first polarization direction and the second polarization direction are not strictly perpendicular, but approximately perpendicular, for example, the included angle between the first polarization direction and the second polarization direction can be between 80° and 100°, and both can be considered as perpendicular.

[0031] As shown in Figure 1 The first radiation branch 11 includes opposite first and second free ends P11 and P12, the feed point F1 is located between the first and second free ends P11 and P12, the first radiation sub-branch 111 is the part between the first free end P11 of the first radiation branch 11 and the feed point F1, the second radiation sub-branch 112 is the part between the second free end P12 of the first radiation branch 11 and the feed point F1, the first feed 12 includes a first signal end 121, the feed point F1 is connected with the first signal end 121; the second radiation branch 21 includes opposite first feed end F21 and first ground end G21, the third radiation branch 22 includes opposite second feed end F22 and second ground end G22, the first ground end G21 and the second ground end G22 are used for grounding, the first feed end F21 and the second feed end F22 are adjacent and spaced apart, the second feed 23 includes a second signal end 231 and a third signal end 232, the second signal end 231 is connected with the first feed end F21 of the second radiation branch 21, and the third signal end 232 is connected with the second feed end F22 of the second radiation branch 21.

[0032] In the present application, A and B adjacent and spaced apart means that A and B are close and spaced apart, in the present application, A and B are adjacent, which also means that they are only close without contact, that is, close and spaced apart, for example, the distance between A and B is less than a predetermined distance, for example, 1 centimeter, and spaced apart. In the present application, the first free end P11 and the second free end P12 mean that the end is suspended and is an open end.

[0033] In some embodiments, the first signal end 121 of the first feed source 12 is configured to output a first feeding signal, the first radiation branch 11 is configured to generate a current along a first polarization direction when excited by the first feed source 12, and the second signal end 231 and the third signal end 232 are configured to output a second feeding signal and a third feeding signal respectively, the second feeding signal and the third feeding signal are 180 degrees out of phase, and the second radiation branch 21 and the third radiation branch 22 are configured to generate a current along a second polarization direction when excited by the second feeding signal and the third feeding signal respectively.

[0034] In some embodiments, the first radiation branch 11 of the first antenna unit 1 is configured to generate a current along a first polarization direction when excited by the first feed source 12, and the second radiation branch 21 and the third radiation branch 22 are configured to generate a current along a second polarization direction when excited by the second feed source 23, so that the electromagnetic wave signals radiated by the two antenna units are substantially perpendicular to each other and do not interfere with each other.

[0035] In some embodiments, the first antenna unit 1 forms a T antenna, and the second antenna unit 2 forms a Loop antenna.

[0036] Please refer to Figure 2 , which is a schematic diagram of the current distribution of the first antenna unit 1 of the electronic device 100 in some embodiments of the present application. Figure 2 Specifically, at least when the electronic device 100 is in a preset state, the second radiation branch 21 is adjacent to and parallel to the first radiation sub-branch 111, and the third radiation branch 22 is adjacent to and parallel to the second radiation sub-branch 112, the first radiation branch 11 of the first antenna unit 1 generates a current distribution diagram of the first antenna unit 1 and the second antenna unit 2 when excited by the first feed source 12, that is Figure 1 , which is a schematic diagram of the current distribution of the first antenna unit 1 of the electronic device 100 in some embodiments of the present application. Figure 2 In order to better show the current, some reference numerals in Figure 1 are omitted.

[0037] As Figure 2As shown, the first radiating branch 11 generates a current I1 from the first free end P11 to the feed point F1 and a current I2 from the second free end P12 to the feed point F1 under the excitation of the first signal end 121 of the first feed 12. That is, opposite currents are generated on the first radiating sub-branch 111 and the second radiating sub-branch 112, and the two opposite currents I1 combine to form a current I12 coupled from the first radiating branch 11 to ground. Specifically, the current I12 can be coupled from the feed point F1 of the first radiating branch 11 to ground.

[0038] Meanwhile, the first radiating sub-branch 111 also excites the second radiating branch 21 adjacent and parallel thereto to generate a current I3 from the first feed end F21 to the first ground end G21, and the second radiating sub-branch 112 also excites the third radiating branch 22 adjacent and parallel thereto to generate a current I4 from the second feed end F22 to the second ground end G22. After the currents I3 and I4 are returned to ground through the first ground end G21 and the second ground end G22 respectively, they form return currents I3', I4' in the same direction as the current I12, and are substantially in the first polarization direction.

[0039] Therefore, as shown, Figure 2 The main currents of the first antenna unit 1 and the second antenna unit 2 as a whole generated by the first radiating branch 11 of the first antenna unit 1 under the excitation of the first feed 12 are currents from the first radiating branch 11 to ground, a current from the first ground end G21 of the second radiating branch 21 to ground, and a current from the second ground end G22 of the third radiating branch 22 to ground, and the directions of these currents are all in the first polarization direction. Therefore, when the first radiating branch 11 is excited by the first signal end 121 of the first feed 12, the first antenna unit 1 and the second antenna unit 2 as a whole mainly generate currents in the first polarization direction, and the overall resonance generated is in the first polarization direction.

[0040] In this application, the resonance generated by the first radiating branch 11 in the first polarization direction specifically means that when the first radiating branch 11 is excited by the first feed 12, the first antenna unit 1 and the second antenna unit 2 as a whole generate resonance in the first polarization direction. The resonance generated by the second radiating branch 21 and the third radiating branch 22 in the second polarization direction specifically means that when the second radiating branch 21 and the third radiating branch 22 are excited by the second feed 23, the first antenna unit 1 and the second antenna unit 2 as a whole generate resonance in the second polarization direction.

[0041] Correspondingly, in the present application, the excitation of the first radiating branch 11 under the first feed source 12 mainly generates current along the first polarization direction, so that the resonance generated by the first radiating branch 11 presents the first polarization direction, which means that when the first radiating branch 11 is excited under the first feed source 12, the first antenna unit 1 and the second antenna unit 2 as a whole mainly generate current along the first polarization direction, so that the resonance generated by the first antenna unit 1 and the second antenna unit 2 as a whole presents the first polarization direction. The aforementioned excitation of the second radiating branch 21 and the third radiating branch 22 under the second feed signal and the third feed signal respectively mainly generates current along the second polarization direction, so that the resonance generated by the second radiating branch 21 and the third radiating branch 22 presents the second polarization direction, which means that when the second radiating branch 21 and the third radiating branch 22 are excited under the second feed signal and the third feed signal respectively, the first antenna unit 1 and the second antenna unit 2 as a whole mainly generate current along the second polarization direction, so that the resonance generated by the first antenna unit 1 and the second antenna unit 2 as a whole presents the second polarization direction.

[0042] As shown in Figure 1 and Figure 2 The electronic device 100 further includes a ground plate 3 for providing a ground potential, and the aforementioned first ground end G21 and the second ground end G22 are grounded by being connected to the ground plate 3.

[0043] In some embodiments, as shown in Figure 1 and Figure 2 The first signal end 121 of the first feed source 12 is further connected to a matching unit M1, that is, the first antenna unit 1 further includes a matching unit M1, wherein the first signal end 121 of the first feed source 12 is connected to the feed point F1 through the matching unit M1. The matching unit M1 includes a plurality of matching elements for achieving impedance matching adjustment to improve radiation efficiency. The matching unit M1 can further include a ground matching element, and the current I12 can be transmitted to the ground through the ground matching element in the matching unit M1. Obviously, in some embodiments, the current I12 can also be transmitted to the ground through the coupling between the first radiating branch 11 and the ground plate 3.

[0044] As mentioned before, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112, and the first feed end F21 and the second feed end F22 are adjacent and spaced apart. As shown in Figure 1 andFigure 2 As shown, in some embodiments, the first feeding end F21 of the second radiating branch 21 and the second feeding end F22 of the third radiating branch 22 are close to the feeding point F1 of the first radiating sub-branch 111, and the first grounding end G21 of the second radiating branch 21 and the first free end P11 of the first radiating sub-branch 111 are close, and the second grounding end G22 of the third radiating branch 22 and the first free end P11 of the first radiating sub-branch 111 are close.

[0045] Therefore, as shown, Figure 2 the direction of the current I3 generated by the second radiating branch 21 from the first feeding end F21 to the first grounding end G21 under the excitation of the first radiating sub-branch 111 is substantially parallel and opposite to the direction of the current I1 on the first radiating sub-branch 111, and the direction of the current I4 generated by the third radiating branch 22 from the second feeding end F22 to the second grounding end G22 under the excitation of the second radiating sub-branch 112 is substantially parallel and opposite to the direction of the current I2 on the second radiating sub-branch 112.

[0046] Among them, since the second radiating branch 21 and the third radiating branch 22 form a Loop antenna, as shown, Figure 2 the ground return currents I3' and I4' in the same direction as the current I2 are formed after the currents I3 and I4 return to the ground through the first grounding end G21 and the second grounding end G22 respectively, and enter the ground plate 3, and the ground plate current I3" in the same direction as the current I1 on the first radiating sub-branch 111 is formed on the ground plate 3 by the ground return current I3' from the first grounding end G21 to the first feeding end F21, and the ground plate current I4" in the same direction as the current I2 on the second radiating sub-branch 112 is formed on the ground plate 3 by the ground return current I4' from the second grounding end G22 to the second feeding end F22. In addition, the current I1 on the first radiating sub-branch 111 and the current I2 on the second radiating sub-branch 112 also excite opposite mirror currents on the ground plate 3, that is, the current I1 on the first radiating sub-branch 111 excites a mirror current I1' on the ground plate 3 opposite to the current I1, and the current I2 on the second radiating sub-branch 112 excites a mirror current I2' on the ground plate 3 opposite to the current I2. Therefore, the direction of the ground plate current I3" is opposite to the direction of the mirror current I1', and they basically cancel each other out, and the direction of the ground plate current I4" is also opposite to the direction of the mirror current I2', and they basically cancel each other out.

[0047] Thus, as a whole, when the first radiating branch 11 is excited under the first feed 12, the first antenna unit 1 and the second antenna unit 2 as a whole mainly generate the currents in the first polarization direction, i.e. the current I12 coupled from the first radiating branch 11 to the ground, the back-to-ground current I3' from the first ground end G21 of the second radiating branch 21 to the ground, and the back-to-ground current I4' from the second ground end G22 of the third radiating branch 22 to the ground. Thus, the resonance at this time is in the first polarization direction.

[0048] Therefore, it can also be seen that, under the structure of the present application, i.e. at least when the electronic device 100 is in the preset state, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, and the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112. The second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 can effectively enhance the polarization in the first polarization direction.

[0049] Please refer to Figure 3 , which is a schematic diagram of the current distribution of the second antenna unit 2 of the electronic device 100 in some embodiments of the present application. Among them, Figure 3 Specifically, at least when the electronic device 100 is in the preset state, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, and the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112, the current distribution diagram of the first antenna unit 1 and the second antenna unit 2 as a whole generated by the second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 under the excitation of the second feed 23, i.e. Figure 1 , which is a schematic diagram of the current distribution of the second antenna unit 2 of the electronic device 100 in some embodiments of the present application. Among them, Figure 3 In order to better show the current, some labels in Figure 1 are also omitted.

[0050] As Figure 3As shown, since the second signal terminal 231 and the third signal terminal 232 are used to output the second feeding signal and the third feeding signal respectively, the second feeding signal and the third feeding signal are 180° out of phase, the second radiation branch 21 generates a current I5 from the first feeding terminal F21 to the first ground terminal G21, and the third radiation branch 22 generates a current I6 from the second ground terminal G22 to the second feeding terminal F22, the directions of the currents I5 and I6 are the same. At this time, the second radiation branch 21 and the third radiation branch 22 are mainly in 1 / 2 wavelength mode as a whole. Meanwhile, the current I5 on the second radiation branch 21 will excite the first radiation sub-branch 111 to generate a reverse current I7, i.e. the current I7 from the first free end of the first radiation sub-branch 111 to the feeding point F1, and the current I6 on the third radiation branch 22 will excite the second radiation sub-branch 112 to generate a reverse current I8. Since the directions of the currents I5 and I6 are the same, the currents I7 and I8 which are reverse to the currents I5 and I6 respectively are also in the same direction. Therefore, as shown, at this time, the first radiation branch 11 generates a current in the direction from the first free end P11 to the second free end P12 as a whole, and basically does not generate a current coupled to the ground. Figure 3

[0051] In addition, the second radiation branch 21 and the third radiation branch 22 constitute a Loop antenna, the current I5 on the second radiation branch 21 flows back to the ground through the first ground terminal G21, then forms a floor current I5' and flows to the second ground terminal G22 of the third radiation branch 22 through the ground floor 3, and forms a current loop. In this case, the directions of the current flowing back to the ground through the first ground terminal G21 and the current flowing to the second ground terminal G22 of the third radiation branch 22 through the ground floor 3 are basically opposite to each other, and offset each other.

[0052] Therefore, when the second radiation branch 21 and the third radiation branch 22 of the second antenna unit 2 are excited by the second feed source 23, the first antenna unit 1 and the second antenna unit 2 mainly present a current which is basically perpendicular to the ground in the direction of the first radiation branch 11. Therefore, the second antenna unit 2 and the third radiation branch 22 mainly generate a current in the second polarization direction under the excitation of the second feeding signal and the third feeding signal respectively, so that the resonance at this time presents the second polarization direction.

[0053] Please refer to Figure 4 ​Fig. 2 shows a schematic diagram of the current distribution on the ground plane 3 when the first antenna unit 1 of the electronic device 100 in some embodiments of the present application is in operation. As mentioned above, when the first radiating branch 11 is excited by the first feed 12, the first antenna unit 1 and the second antenna unit 2 as a whole mainly generate currents which are approximately in the first polarization direction R1, i.e. the current I12 coupled from the first radiating branch 11 to ground, the return current I3' from the first ground end G21 of the second radiating branch 21 to ground, and the return current I4' from the second ground end G22 of the third radiating branch 22 to ground. Thus, as shown in Fig. 2, the currents mainly present on the ground plane 3 are also currents which are approximately in the first polarization direction R1, i.e. the current I12 coupled from the first radiating branch 11 to ground, the return current I3' from the first ground end G21 of the second radiating branch 21 to ground, and the return current I4' from the second ground end G22 of the third radiating branch 22 to ground. Figure 4

[0054] Please refer to Figure 5 Fig. 3 shows a schematic diagram of the current distribution on the ground plane 3 when the second antenna unit 2 of the electronic device 100 in some embodiments of the present application is in operation. As mentioned above, when the second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 are excited by the second feed 23, the current I5 on the second radiating branch 21 from the first feed end F21 to the first ground end G21 returns to ground through the first ground end G21, and then forms the ground plane current I5' which flows to the second ground end G22 of the third radiating branch 22 through the ground plane 3. As shown in Fig. 3, the currents mainly present on the ground plane 3 are currents which are approximately in the second polarization direction R2, i.e. currents along a direction parallel to the direction from the first ground end G21 to the second ground end G22, i.e. currents which are approximately perpendicular to the direction from the first radiating branch 11 to ground. Figure 5

[0055] Thus, from Figure 4 and Figure 5 the current distribution of the ground plane 3, it can be seen that when the first radiating branch 11 is excited by the first feed 12, and when the second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 are excited by the second feed 23, the resonances mainly present two substantially perpendicular directions, which realizes the same frequency orthogonal polarization, and effectively avoids or greatly reduces the interference between the first antenna unit 1 and the second antenna unit 2.

[0056] In some embodiments, as Figure 1-3 ​​As shown, the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 are all long straight strips. The direction of the first radiation branch 11 to ground is substantially perpendicular to the length direction of the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22, that is, in some embodiments, the first polarization direction can be a direction perpendicular to the length direction of the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22. While the second polarization direction can be substantially a direction parallel to the length direction of the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22.

[0057] The first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 are all long straight strips, and the length direction of the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 can be the extension direction of the longest side of the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22.

[0058] In some embodiments, the first radiation branch 11 is mainly an even mode under the excitation of the first feed 12, and the second radiation branch 21 and the third radiation branch 22 are odd mode under the excitation of the second feed 23.

[0059] In some embodiments, as shown in FIG. 1, the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 are all long straight strips. Figure 1 As shown in FIG. 1, the feed point F1 can be located at the middle position of the first radiation branch 11, the electrical length of the first radiation sub-branch 111 and the second radiation sub-branch 112 is equal, and both equal to λ / 4, where λ is the wavelength corresponding to the preset frequency band, the first radiation sub-branch 111 and the second radiation sub-branch 112 are both resonant in the preset frequency band under the excitation of the first feed signal, and double resonance is realized; the electrical length of the second radiation branch 21 and the third radiation branch 22 is equal to λ / 4, and the second radiation branch 21 and the third radiation branch 22 are both resonant in the preset frequency band under the excitation of the second feed signal and the third feed signal, respectively, and double resonance is also realized.

[0060] The second radiation branch 21 and the third radiation branch 22 are mainly 1 / 2 wavelength mode as a whole, and the electrical lengths of the second radiation branch 21 and the third radiation branch 22 are equal to λ / 4. The second radiation branch 21 and the third radiation branch 22 resonate in the preset frequency band under the excitation of the second feeding signal and the third feeding signal respectively. Since the directions of the currents flowing through the second radiation branch 21 and the third radiation branch 22 are the same, the second radiation branch 21 and the third radiation branch 22 can be regarded as 1 / 2 wavelength radiation branches as a whole, and a 1 / 2 wavelength mode is formed.

[0061] Therefore, in the present application, the first radiation sub-branch 111 and the second radiation sub-branch 112 resonate in the preset frequency band under the excitation of the first feeding signal, and the second radiation branch 21 and the third radiation branch 22 resonate in the preset frequency band under the excitation of the second feeding signal and the third feeding signal respectively, which can effectively improve the radiation performance in the preset frequency band.

[0062] In some embodiments, at least when the electronic device 100 is in a preset state, the second radiation branch 21 is adjacent to and parallel with the first radiation sub-branch 111, the third radiation branch 22 is adjacent to and parallel with the second radiation sub-branch 112, and the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 are close to the feeding point F1, and the feeding point F1 is located between the projections of the first feeding end F21 and the second feeding end F22 on the first radiation branch 11.

[0063] That is, in some embodiments, the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 are close to the feeding point F1 on the first radiation branch 11, and the projections of the first feeding end F21 and the second feeding end F22 on the first radiation branch 11 are located on the two sides of the feeding point F1, that is, the feeding point F1 is located between the projections of the first feeding end F21 and the second feeding end F22 on the first radiation branch 11.

[0064] Further, in some embodiments, the feed point F1 is located substantially at the middle of the first radiating branch 11, the first radiating branch 11 is divided by the feed point F1 into a first radiating sub-branch 111 and a second radiating sub-branch 112, the lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 are substantially the same, and the lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 are substantially equal to the electrical lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112, so that the electrical lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 are substantially the same, and the first radiating sub-branch 111 and the second radiating sub-branch 112 are capable of resonating at the same frequency band at the same time. The first radiating sub-branch 111 and the second radiating sub-branch 112 are also substantially symmetrically distributed with respect to a symmetric center line passing through the feed point F1.

[0065] Since the lengths of the second radiating branch 21 and the third radiating branch 22 are substantially equal to the electrical lengths of the second radiating branch 21 and the third radiating branch 22, and the lengths of the second radiating branch 21 and the third radiating branch 22 are equal, the second radiating branch 21 and the third radiating branch 22 are also substantially symmetrically distributed with respect to a symmetric center line passing through the middle point of the line connecting the first feed end F21 of the second radiating branch 21 and the second feed end F22 of the third radiating branch 22.

[0066] In some embodiments, the first feed end F21 of the second radiating branch 21 and the second feed end F22 of the third radiating branch 22 are close to the feed point F1 on the first radiating branch 11, and the projection of the middle point of the line connecting the first feed end F21 of the second radiating branch 21 and the second feed end F22 of the third radiating branch 22 on the first radiating branch 11 can substantially coincide with the feed point F1. Thus, the symmetric center line of the first radiating sub-branch 111 and the second radiating sub-branch 112 substantially coincides with the symmetric center line of the second radiating branch 21 and the third radiating branch 22.

[0067] Therefore, by the structure, in addition, the first feeding end F21 of the second radiating branch 21 and the second feeding end F22 of the third radiating branch 22 are as close as possible, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 11, and the projection of the second radiating branch 21 on the first radiating sub-branch 11 substantially coincides with the first radiating sub-branch 11, the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112, and the projection of the third radiating branch 22 on the second radiating sub-branch 112 substantially coincides with the second radiating sub-branch 112. When the first radiating branch 11 is excited under the first feed 12, the polarization of the first polarization direction can be more effectively presented, and when the second radiating branch 21 and the third radiating branch 22 are excited under the second feed 23, the polarization of the second polarization direction can be more effectively presented. Moreover, by this structure, the size of the overall antenna structure is small, which is beneficial to the arrangement in a small clearance area.

[0068] In some embodiments, the feeding point F1 is located at the middle position of the first radiating branch 11, which can not be strictly located at the middle position, and the lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 are substantially the same but not strictly the same. For example, the feeding point F1 can be offset from the strictly middle position by a certain distance, for example, by a distance less than λ / 8, and the lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 can be considered the same within a predetermined range, for example, the lengths of the first radiating sub-branch 111 and the second radiating sub-branch 112 can be slightly different but basically close, and can basically resonate at the same frequency band. Similarly, the lengths of the second radiating branch 21 and the third radiating branch 22 are the same but not strictly the same, and the lengths of the second radiating branch 21 and the third radiating branch 22 can be considered the same within a predetermined range, for example, the lengths of the second radiating branch 21 and the third radiating branch 22 can be basically close, and can basically resonate at the same frequency band.

[0069] In some embodiments, as shown in FIG. 1, Figure 1 The electronic device 100 is a flat panel electronic device, the first radiating branch 11, the second radiating branch 21, and the third radiating branch 22 are arranged at the same target end D1 of the electronic device 100, and the preset state includes any state.

[0070] That is, in some embodiments, the electronic device 100 is a tablet electronic device, and the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, and the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112 in any state, that is, the structural positional relationship of the first antenna unit 1 and the second antenna unit 2 is a fixed structural positional relationship.

[0071] Wherein, the aforementioned Figure 2-5 are current distribution diagrams in the case of the electronic device 100 being a tablet electronic device.

[0072] Wherein, as Figure 1-3 indicated, the first radiating branch 11, the second radiating branch 21, and the third radiating branch 22 are long straight strips, and the first radiating branch 11, the second radiating branch 21, and the third radiating branch 22 are parallel to the target end D1, the second radiating branch 21 and the third radiating branch 22 are arranged in a preset direction, and the preset direction is the length direction of the second radiating branch 21 and the third radiating branch 22.

[0073] Wherein, in the present application, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, which means that the second radiating branch 21 is adjacent to the first radiating sub-branch 111, and parallel to each other along the length direction of the second radiating branch 21 and the first radiating sub-branch 111, and spaced apart from each other along a direction perpendicular to the length direction of the second radiating branch 21 and the first radiating sub-branch 111. The third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112, which means that the third radiating branch 22 is adjacent to the second radiating sub-branch 112, and parallel to each other along the length direction of the third radiating branch 22 and the second radiating sub-branch 112, and spaced apart from each other along a direction perpendicular to the length direction of the third radiating branch 22 and the second radiating sub-branch 112.

[0074] Thus, in some embodiments, since the second radiating branch 21 is adjacent to and parallel with the first radiating sub-branch 111, the third radiating branch 22 is adjacent to and parallel with the second radiating sub-branch 112, and the second radiating branch 21 and the third radiating branch 22 are arranged in a preset direction, and the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22 are all parallel to the target end D1. Therefore, in some embodiments, the second radiating branch 21 and the first radiating sub-branch 111 are arranged in a direction perpendicular to the end surface of the target end D1, the third radiating branch 22 and the second radiating sub-branch 112 are also arranged in a direction perpendicular to the end surface of the target end D1, and the third radiating branch 22 and the second radiating sub-branch 112 are located on the same side of the first radiating branch 11.

[0075] Obviously, in some embodiments, the second radiating branch 21 being adjacent to and parallel with the first radiating sub-branch 111 means that the second radiating branch 21 is adjacent to and parallel with the first radiating sub-branch 111, and does not need to be parallel to the end.

[0076] In the present application, the length direction of the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22 means the extension direction of the longest side of the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22.

[0077] Obviously, in other embodiments, the second radiating branch 21 and the third radiating branch 22 can also not be arranged in a preset direction, i.e., the length direction, for example, the second radiating branch 21 and the third radiating branch 22 can be located on the two sides of the first radiating branch 11, as long as the second radiating branch 21 is adjacent to and parallel with the first radiating sub-branch 111, and the third radiating branch 22 is adjacent to and parallel with the second radiating sub-branch 112.

[0078] In some embodiments, as shown in FIG. 1, the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22 are arranged in a preset direction, and the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22 are all parallel to the target end D1. Figure 1-3 As shown in FIG. 1, the projection of the first radiating branch 11 on the target end D1 at least partially overlaps the second radiating branch 21, and the projection of the first radiating branch 11 on the target end D1 at least partially overlaps the third radiating branch 22.

[0079] Therefore, the first radiation sub-branch 111 of the first radiation branch 11 and the projection of the second radiation branch 21 on the target end D1 at least partially coincide, the second radiation sub-branch 112 of the first radiation branch 11 and the projection of the third radiation branch 22 on the target end D1 at least partially coincide, which can ensure that when the first radiation branch 11 is excited under the first feed source 12, the second radiation branch 21 and the third radiation branch 22 are further coupled and excited to generate corresponding currents, and when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed source 23, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are further coupled to generate corresponding currents, so that the resonance of the first polarization direction and the resonance of the second polarization direction can be better achieved.

[0080] In some embodiments, as previously described, when the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 are close to the feeding point F1 on the first radiation branch 11, and the midpoint of the line connecting the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 is substantially coincident with the projection of the feeding point F1 on the first radiation branch 11, the projection of the second radiation branch 21 on the first radiation sub-branch 111 is substantially coincident with the first radiation sub-branch 11, i.e., most coincident, the third radiation branch 22 is adjacent to and parallel to the second radiation sub-branch 112, and the projection of the third radiation branch 22 on the second radiation sub-branch 112 is substantially coincident with the second radiation sub-branch 112, i.e., most coincident. Therefore, when the first radiation branch 11 is excited under the first feed source 12, the polarization of the first polarization direction can be more effectively presented, and when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed source 23, the polarization of the second polarization direction can be more effectively presented. Moreover, through this structure, the overall antenna structure has a smaller size, which is beneficial for deployment in a small clearance area.

[0081] In some embodiments, as previously described, when the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 are close to the feeding point F1 on the first radiation branch 11, and the midpoint of the line connecting the first feeding end F21 of the second radiation branch 21 and the second feeding end F22 of the third radiation branch 22 is substantially coincident with the projection of the feeding point F1 on the first radiation branch 11, the projection of the second radiation branch 21 on the first radiation sub-branch 111 is substantially coincident with the first radiation sub-branch 11, i.e., most coincident, the third radiation branch 22 is adjacent to and parallel to the second radiation sub-branch 112, and the projection of the third radiation branch 22 on the second radiation sub-branch 112 is substantially coincident with the second radiation sub-branch 112, i.e., most coincident. Therefore, when the first radiation branch 11 is excited under the first feed source 12, the polarization of the first polarization direction can be more effectively presented, and when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed source 23, the polarization of the second polarization direction can be more effectively presented. Moreover, through this structure, the overall antenna structure has a smaller size, which is beneficial for deployment in a small clearance area. Figure 1 As shown in FIGS. 1-3, the electronic device 100 includes a top end D11, a bottom end D12, and two side ends D13 and D14, and the target end D1 can be any one of the top end D11, the bottom end D12, and the two side ends D13 and D14.

[0082] That is, the first radiation branch 11, the second radiation branch 21, and the third radiation branch 22 can be simultaneously arranged on any one of the top end D11, the bottom end D12, and the two side ends D13 and D14 of the electronic device 100.

[0083] Wherein, the "top" and "bottom" and other orientation words used when the embodiments of the present application describe the electronic device 100 are mainly based on the orientation when the user holds the electronic device 100, and the position facing the top side of the electronic device 100 is "top", and the position facing the bottom side of the electronic device 100 is "bottom", and it is not intended or implied that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the orientation of the electronic device 100 in the actual application scenario. In some embodiments, the bottom end of the electronic device 100 is the end provided with the earphone hole and the USB hole, and the top of the electronic device 100 is the other end opposite to the end provided with the earphone hole and the USB hole, which can also refer to the end provided with the camera, the microphone, etc.

[0084] Please refer to Figure 6 , which is a schematic diagram of the return loss and total system efficiency of the first antenna unit 1 and the second antenna unit 2 of the electronic device 100 in some embodiments of the present application. Wherein, Figure 6 may be Figure 1 a schematic diagram of the return loss and total system efficiency of the first antenna unit 1 and the second antenna unit 2 obtained by simulation test on the structure of the electronic device 100 shown.

[0085] Wherein, Figure 6 the return loss curve S11-1 and the total system efficiency curve St1 of the first antenna unit 1, and the return loss curve S11-2 and the total system efficiency curve St2 of the second antenna unit 2 are shown.

[0086] Generally, the trough of the return loss curve, that is, the peak of the total system efficiency curve, and the corresponding frequency is the resonant frequency of the operating frequency band.

[0087] As Figure 6 shown, at the resonant frequency of the preset frequency band, the return loss of the first antenna unit 1 is about -8dB, and the total system efficiency is about -2dB, while the return loss of the second antenna unit 2 is also about -8dB, and the total system efficiency is about 2dB.

[0088] As can be seen, the return loss of the first antenna unit 1 and the second antenna unit 2 is low, and the total system efficiency is high.

[0089] Please refer to Figure 7 , which is a schematic diagram of the return loss and isolation of the first antenna unit 1 and the second antenna unit 2 of the electronic device 100 in some embodiments of the present application. Wherein, Figure 7 may also be Figure 1The structure of the electronic device 100 shown is used to perform simulation tests to obtain the return loss and total system efficiency of the first antenna unit 1 and the second antenna unit 2.

[0090] wherein, Figure 7 The return loss curve S11-1 of the first antenna unit 1, the return loss curve S11-2 of the second antenna unit 2, and the isolation curve Sg1 between the first antenna unit 1 and the second antenna unit 2 are shown in the figure.

[0091] Generally, the higher the amplitude of the isolation curve Sg1, the lower the isolation between the first antenna unit 1 and the second antenna unit 2, and the lower the amplitude of the isolation curve Sg1, the higher the isolation between the first antenna unit 1 and the second antenna unit 2.

[0092] As Figure 7 shown, at the resonant frequency of the preset frequency band, the return loss of the first antenna unit 1 is approximately -8 dB, and the return loss of the second antenna unit 2 is also approximately -8 dB, and the isolation between the first antenna unit 1 and the second antenna unit 2 is approximately -58 dB. Obviously, it shows that under the structure of the electronic device 100 of the present application, the isolation between the first antenna unit 1 and the second antenna unit 2 is already very high, and the mutual interference is already very low, which can meet the isolation requirement.

[0093] Please refer to Figure 8 , which is an envelope correlation coefficient (ECC) curve diagram of the first antenna unit 1 and the second antenna unit 2 of the electronic device 100 in some embodiments of the present application. Wherein, Figure 8 It can also be Figure 1 The envelope correlation coefficient of the first antenna unit 1 and the second antenna unit 2 obtained by performing simulation tests on the structure of the electronic device 100 shown is shown in the figure.

[0094] Wherein, the envelope correlation coefficient (ECC) represents the similarity of the envelope, i.e. the radiation pattern, between two same-frequency antennas. The lower the envelope correlation coefficient, the less similar the radiation patterns of the two same-frequency antennas, i.e. the higher the isolation.

[0095] Wherein, the envelope correlation coefficient Sb1 of the first antenna unit 1 and the second antenna unit 2 is shown in the figure. From Figure 8It can be seen that, in the structure of the electronic device 100 of the present application, the envelope correlation coefficients of the first antenna unit 1 and the second antenna unit 2 are far less than 0.1 at the corresponding resonance frequency, which is very low, and thus, from the envelope correlation coefficients, it is also reflected that the first antenna unit 1 and the second antenna unit 2 of the electronic device 100 of the present application have completely different radiation patterns due to the fact that the polarization directions of the two are basically perpendicular, so that the isolation is very high and the interference between them is very small.

[0096] In some embodiments, as shown in Figure 6-8 , the preset frequency band in the present application can be a medium-high frequency band in the range of 2GHz-3GHz, and the resonance frequency is approximately located in the range of 2.3-2.5GHz.

[0097] Obviously, Figure 6-8 is only an example, and the preset frequency band can be any other frequency band, for example, it can also be a low frequency band, a medium frequency band, etc., and good same-frequency isolation can be achieved by using the structure of the present application.

[0098] Please refer to Figure 9 , which is another plan view of the electronic device 100 in some embodiments of the present application. In some embodiments, as shown in Figure 9 , the electronic device 100 is also a flat panel electronic device, wherein the first radiation sub-branch 111 of the first radiation branch 11 and the second radiation branch 21 are arranged at the first target end D1 of the electronic device 100, the second radiation sub-branch 112 of the first radiation branch 11 and the third radiation branch 22 are arranged at the second target end D2 of the electronic device 100, the first target end D1 and the second target end D2 are adjacent ends, and the preset state includes any state.

[0099] That is, Figure 9 The difference between the above-mentioned Figure 1 is that the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are arranged at two adjacent ends of the electronic device 100 respectively, and the second radiation sub-branch 112 and the third radiation branch 22 are also arranged at the two adjacent ends of the electronic device 100 respectively.

[0100] Similarly, the second radiation sub-branch 112 and the third radiation branch 22 are still adjacent and parallel to the first radiation sub-branch 111 and the second radiation sub-branch 112 respectively.

[0101] As Figure 9As shown, the first radiation branch 11 is in a bent shape, the second radiation branch 21 and the third radiation branch 22 are in long straight strip shapes, the first radiation sub-branch 111 of the first radiation branch 11 and the second radiation branch 21 are parallel to the first target end D1, and the second radiation sub-branch 112 of the first radiation branch 11 and the third radiation branch 22 are parallel to the second target end D2.

[0102] That is, in some embodiments, the first radiation branch 11 and the second radiation sub-branch 112 and the third radiation branch 22 are arranged at one top corner of the electronic device 100, and the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 and the second radiation sub-branch 112 and the third radiation branch 22 are respectively parallel to two adjacent ends at the top corner.

[0103] Herein, the parallel of A and B in the present application refers to approximately parallel, not strictly parallel, and the angle difference between A and B within a preset angle range can also be regarded as parallel, for example, the angle difference between A and B within 15° can also be regarded as parallel.

[0104] In some embodiments, as shown in Figure 9 As shown, the projection of the first radiation sub-branch 111 of the first radiation branch 11 on the first target end D1 at least partially coincides with the second radiation branch 21, and the projection of the second radiation sub-branch 112 of the first radiation branch 11 on the second target end D2 at least partially coincides with the third radiation branch 22. Thus, similarly, it can be ensured that when the first radiation branch 11 is excited under the first feed source 12, the second radiation branch 21 and the third radiation branch 22 are further coupled and excited to generate corresponding currents, and it can be ensured that when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed source 23, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are further coupled to generate corresponding currents, so that the polarization of the first polarization direction and the polarization of the second polarization direction can be better achieved.

[0105] Please refer to Figure 10 for another current distribution diagram of the first antenna unit 1 of the electronic device 100 in some embodiments of the present application when working. Among them, Figure 10 may be Figure 9 As shown, the first radiation branch 11 of the first antenna unit 1 in the electronic device 100 generates the current distribution diagram of the entire first antenna unit 1 and the second antenna unit 2 under the excitation of the first feed source 12. Among them, in order to more clearly show the current, Figure 10 some elements and labels are omitted in

[0106] like Figure 10 As shown, the first radiating stub 11, under the excitation of the first signal terminal 121 of the first feed source 12, also generates a current I1 from the first free terminal P11 to the feed point F1 and a current I2 from the second free terminal P12 to the feed point F1. That is, opposing currents are generated on the first radiating sub-stub 111 and the second radiating sub-stub 112. Furthermore, the two opposing currents I1 merge to form a current I12 coupled from the feed point F1 of the first radiating stub 11 to ground.

[0107] In some embodiments, the feed point F1 is located at the middle of the first radiating stub 11, and the first radiating sub-stub 111 and the second radiating sub-stub 112 have equal electrical lengths. Therefore, the feed point F1 is approximately located at the position corresponding to the connection point of the two adjacent ends. Thus, as shown, the current I12 coupled to ground from the feed point F1 of the first radiating stub 11 is approximately a current along a direction having the same angle (45°) with both the first target end D1 and the second target end D2. That is, approximately along the diagonal direction of the first target end D1 and the second target end D2.

[0108] Similarly, the first radiating sub-stub 111 also excites a current I3 from the first feed terminal F21 to the first ground terminal G21 on the adjacent and parallel second radiating sub-stub 21. The second radiating sub-stub 112 also excites a current I4 from the second feed terminal F22 to the second ground terminal G22 on the adjacent and parallel third radiating sub-stub 22. After the currents I3 and I4 return to ground through the first ground terminal G21 and the second ground terminal G22 respectively, they form a return current I3' perpendicular to the first target end D1 and a return current I4' perpendicular to the second target end D2. The vector and direction of the return currents I3' and I4' are the same as the current I12 coupled to ground from the feed point F1 of the first radiating sub-stub 11. Therefore, they are equivalent to the current coupled to ground from the feed point F1 of the first radiating sub-stub 11, i.e., the first polarization direction R1.

[0109] Therefore, when the first radiating branch 1 is excited under the first feed 12, it generates a current along the first polarization direction and exhibits polarization in the first polarization direction. It may also include generating an equivalent current along the first polarization direction and exhibiting polarization in the first polarization direction as a whole.

[0110] At this time, the direction of the current from the feed point F1 of the first radiating branch 11 to the ground is the direction of the first target end D1 and the second target end D2, i.e. the diagonal direction of the first target end D1 and the second target end D2, which is the first polarization direction R1. Thus, when the first radiating branch 11 is excited by the first signal end 121 of the first feed source 12, the first antenna unit 1 and the second antenna unit 2 as a whole still mainly have the current in the first polarization direction, and the polarization in the first polarization direction is realized.

[0111] Please refer to Figure 11 , which is another schematic diagram of the current distribution when the second antenna unit 2 of the electronic device 100 in some embodiments of the present application works. In the diagram, Figure 11 may be Figure 9 The second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 in the electronic device 100 shown in the diagram generate the current distribution of the first antenna unit 1 and the second antenna unit 2 as a whole when the second radiating branch 21 and the third radiating branch 22 are excited by the second feed source 23. In order to more clearly show the current, Figure 11 Some elements and labels are also omitted in the diagram.

[0112] As shown in the diagram, Figure 11 Since the second signal end 231 and the third signal end 232 are used to output the second feed signal and the third feed signal respectively, the phases of the second feed signal and the third feed signal are 180° different, the current I5 from the first feed end F21 to the first ground end G21 is generated on the second radiating branch 21, and the current I6 from the second ground end G22 to the second feed end F22 is generated on the third radiating branch 22, the directions of the current I5 and the current I6 are the same. At this time, the second radiating branch 21 and the third radiating branch 22 as a whole mainly have the 1 / 2 wavelength mode. At the same time, the current I5 on the second radiating branch 21 will excite the first radiating sub-branch 111 to generate the current I7 in the opposite direction, i.e. the current I7 from the first free end of the first radiating sub-branch 111 to the feed point F1, and the current I6 on the third radiating branch 22 will excite the second radiating sub-branch 112 to generate the current I8 in the opposite direction. Since the overall directions of the current I5 and the current I6 are still the same, i.e. the overall transmission direction is along a path direction, only the path direction is curved, the currents I7 and I8 in the opposite directions of the currents I5 and I6 are also the same direction currents. Therefore, as shown in the diagram, Figure 11 At this time, the first radiating branch 11 as a whole generates the current in the direction from the first free end P11 to the second free end P12, and basically does not generate the current coupled to the ground.

[0113] In addition, the second radiating branch 21 and the third radiating branch 22 constitute a Loop antenna, and the current I5 generated on the second radiating branch 21 from the first feeding terminal F21 to the first grounding terminal G21 returns to the ground through the first grounding terminal G21, and then forms a floor current I5' which is parallel and opposite to the current I5, and is transmitted toward the position of the first feeding terminal F21, and after reaching the position approximately corresponding to the first feeding terminal F21, it is transmitted in a direction approximately parallel and opposite to the current I6, i.e. Figure 11 the floor current I6' in the first radiating branch 11, and then flows to the second grounding terminal G22 of the third radiating branch 22, thereby forming a current loop.

[0114] At this time, the vector sum of the floor currents I5' and I6', and the vector sum of the currents I5 on the second radiating branch 21 and the currents I6 on the third radiating branch 22, and so on, are all approximately perpendicular to the direction of the current from the feeding point F1 of the first radiating branch 11 to the ground, i.e. the diagonal direction of the first target end D1 and the second target end D2, i.e. the second polarization direction R2.

[0115] At this time, the second radiating branch 21 and the third radiating branch 22 of the second antenna unit 2 are excited by the second feeding source 23, and the first antenna unit 1 and the second antenna unit 2 mainly exhibit currents approximately perpendicular to the direction of the first radiating branch 11 to the ground. Therefore, the second antenna unit 2 and the third radiating branch 22 mainly generate currents equivalent to the second polarization direction under the excitation of the second feeding signal and the third feeding signal, and exhibit polarization in the second polarization direction.

[0116] Therefore, the second radiating branch 21 and the third radiating branch 22 of the aforementioned respectively generate currents in the second polarization direction under the excitation of the second feeding signal and the third feeding signal, and exhibit polarization in the second polarization direction, which can also include generating currents equivalent to the second polarization direction as a whole to exhibit polarization in the second polarization direction.

[0117] wherein, Figure 10 and Figure 11 the current distribution diagrams shown in Figure 2 and Figure 3 are only different in the positions of the first radiating branch 11, the second radiating branch 21 and the third radiating branch 22, and more specific contents can be referred to the descriptions of Figure 2 and Figure 3 .

[0118] Wherein, as mentioned above, the electronic device comprises a top end D11, a bottom end D12 and two side ends D13, D14. Wherein, the first target end D1 can be the top end D11 or the bottom end D12, and the second target end D2 is one of the side ends; or, the first target end D1 is one of the side ends, and the second target end D2 is the top end D11 or the bottom end D12.

[0119] Wherein, as mentioned above, Figure 1-3 And Figure 9-11 As shown in FIGS. 1-3, the electronic device 100 further comprises a main board 4, and the first feed source 12 and the second feed source 23 are arranged on the main board 4. The feed point F1 of the first radiating branch 11 is connected with the first feed source 12 through a first feed connection J1, i.e., connected with a first signal end 121 of the first feed source 12. The first feed end F21 of the second radiating branch 21 is connected with a second signal end 231 of the second feed source 23 through a second feed connection J2. The second feed end F22 of the third radiating branch 22 is connected with a third signal end 232 of the second feed source 23 through a third feed connection J3. Wherein, in some embodiments, as shown in FIGS. 1-3, the second radiating branch 21 and the third radiating branch 22 are closer to the main board 4 than the first radiating branch 11, and the first feed connection J1 passes through the gap between the second radiating branch 21 and the third radiating branch 22. Figure 1-3 And Figure 9-11 As shown in FIGS. 1-3, the second radiating branch 21 and the third radiating branch 22 are closer to the main board 4 than the first radiating branch 11, and the first feed connection J1 passes through the gap between the second radiating branch 21 and the third radiating branch 22.

[0120] That is, in some embodiments, the first feed source 12 and the second feed source 23 are connected with the corresponding feed points or feed ends through the corresponding feed connections. Since the second radiating branch 21 and the third radiating branch 22 are closer to the main board 4 than the first radiating branch 11, the first feed connection J1 can be connected with the first feed source 12 on the main board 4 through the gap between the second radiating branch 21 and the third radiating branch 22, which is beneficial to save space.

[0121] In some embodiments, the first feed connection J1, the second feed connection J2 and the third feed connection J3 can be feed springs. Obviously, in other embodiments, the first feed connection J1, the second feed connection J2 and the third feed connection J3 can also be conductive wires, flexible circuit boards or other electrical connections.

[0122] As mentioned above, the first feed source 12 is connected to the feed point F1 of the first radiating stub 11 via the matching unit M1. Therefore, specifically, both the first feed source 12 and the matching unit M1 can be mounted on the main board 4 and connected via conductive lines, etc. The feed connector J1 can specifically be connected between the matching unit M1 and the feed point F1 of the first radiating stub 11, thereby realizing the connection between the first feed source 12 and the feed point F1.

[0123] Among them, such as Figure 1-3 as well as Figure 9-11 As shown in the figure, one of the signal terminals of the second feed source 23 is also connected to the corresponding feed terminal through a matching unit M2; that is, the second antenna unit 2 also includes a matching unit M2. For example, as Figure 1-3 as well as Figure 9-11 As shown in the figure, the third signal terminal 232 of the second feed source 23 is also connected to the corresponding second feed terminal F22 through a matching unit M2. The matching unit M2 also includes several matching elements for impedance matching adjustment to improve radiation performance.

[0124] Similarly, the second feed source 23 and the matching unit M2 can both be disposed on the motherboard 4 and connected by conductive lines, etc. The power supply connector J3 can be specifically connected between the matching unit M2 and the second power supply terminal F22 to realize the connection between the second feed source 23 and the second power supply terminal F22.

[0125] In some embodiments, when performing impedance matching adjustment, the matching unit M1 and the matching unit M2 may have equivalent electrical lengths. The aforementioned first radiating sub-stub 111 and second radiating sub-stub 112 have equal electrical lengths, both equal to λ / 4. Alternatively, the electrical lengths of the first radiating sub-stub 111 and second radiating sub-stub 112 may both be equal to λ / 4 with further cooperation from the matching unit M1. Similarly, the electrical lengths of the second radiating sub-stub 21 and the third radiating sub-stub 22 are both equal to λ / 4. This can also be achieved by further cooperation from the matching unit M1.

[0126] Obviously, in some embodiments, the electrical lengths of the first radiating sub-segment 111 and the second radiating sub-segment 112 are equal, and both are equal to λ / 4. Alternatively, the electrical lengths of the first radiating sub-segment 111 and the second radiating sub-segment 112 themselves can be equal to λ / 4. The electrical lengths of the second radiating sub-segment 21 and the third radiating sub-segment 22 are both equal to λ / 4. Alternatively, the electrical lengths of the second radiating sub-segment 21 and the third radiating sub-segment 22 themselves can be equal to λ / 4.

[0127] Please refer to Figure 12 , which is another planar schematic view of the electronic device 100 in some embodiments of the present application. In some embodiments, the electronic device 100 is a foldable electronic device, such as Figure 12 , the electronic device 100 includes a first body part 101, a second body part 102, and a hinge 103 connected between the first body part 101 and the second body part 102, wherein the first body part 101 and the second body part 102 are rotationally connected by the hinge 103; the first radiating branch 11 is disposed at a first end 1D of the first body part 101, the second radiating branch 21 and the third radiating branch 22 are disposed at a second end 2D of the second body part 102, the first end 1D and the second end 2D are at least directed to the same direction when the electronic device 100 is in a folded state, and the preset state includes the folded state.

[0128] That is, in some embodiments, the electronic device 100 is a foldable electronic device, the preset state includes a folded state, when the electronic device 100 is in the folded state, the second radiating branch 21 is adjacent to and parallel to the first radiating sub-branch 111, and the third radiating branch 22 is adjacent to and parallel to the second radiating sub-branch 112, thereby forming the aforementioned Figure 1-3 or Figure 9-11 structure, which can realize polarization in two perpendicular directions, and can still enable the first antenna unit 1 and the second antenna unit 2 to achieve good isolation.

[0129] , the first radiating branch 11 is disposed at the corresponding position of the first end 1D of the first body part 101, and the second radiating branch 21 and the third radiating branch 22 are disposed at the corresponding position of the second end 2D of the second body part 102.

[0130] In some embodiments, as shown in Figure 12As shown, the first radiation branch 11, the second radiation branch 21 and the third radiation branch 23 are all straight strips, and the first radiation branch 11 is parallel to the first end 1D, and the second radiation branch 21 and the third radiation branch 22 are parallel to the second end 2D and are arranged in a preset direction, which is the length direction of the second radiation branch 21 and the third radiation branch 22.

[0131] In some embodiments, when the electronic device 100 is in the preset state, i.e., the electronic device 100 is in the folded state, the projection of the first radiation sub-branch 111 of the first radiation branch 11 on the first end 1D at least partially faces the projection of the second radiation branch on the second end, and the projection of the second radiation sub-branch of the first radiation branch on the first end at least partially faces the projection of the third radiation branch on the second end. Thus, it can be ensured that when the electronic device 100 is in the folded state and the first radiation branch 11 is excited under the first feed 12, the second radiation branch 21 and the third radiation branch 22 are further coupled and excited to generate corresponding currents, and when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed 23, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are further coupled to generate corresponding currents, so that the resonance of the first polarization direction and the resonance of the second polarization direction can be better achieved.

[0132] In some embodiments, the first body part 101 and the second body part 102 each include a top end 11D, a bottom end 12D and a side end 13D away from the rotation shaft 103, and the first end 1D and the second end 2D are one of the top end 11D, the bottom end 12D and the side end 13D.

[0133] That is, when the first end 1D is the top end 11D of the first body part 101, the second end 2D is also the top end 11D of the second body part 102, when the first end 1D is the side end 13D of the first body part 101, the second end 2D is also the side end 13D of the second body part 102, and so on. Thus, it can be ensured that when the electronic device 100 is in the folded state, the first end 1D and the second end 2D are oriented in the same direction, and the second radiation branch 21 is adjacent to and parallel to the first radiation sub-branch 111, and the third radiation branch 22 is adjacent to and parallel to the second radiation sub-branch 112.

[0134] wherein, Figure 12As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 12 As shown in FIG. 1, the first antenna unit 1 and the second antenna unit 2 form the aforementioned Figure 1-3 structure as shown in FIG. 1.

[0135] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 13 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 13 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102.

[0136] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102.

[0137] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 14 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 14 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 12 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 13 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102.

[0138] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 14 As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102.

[0139] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102.

[0140] As shown in FIG. 1, the first end 1D is a top end 11D of the first body portion 101, and the second end 2D is also a top end 11D of the second body portion 102. Figure 14As shown, at the resonant frequency of the preset frequency band, the return loss of the first antenna unit 1 is approximately -10dB, and the return loss of the second antenna unit 2 is also approximately -10dB, and the isolation between the first antenna unit 1 and the second antenna unit 2 is approximately -39dB, which is also a very small value. Obviously, it is illustrated that the electronic device 100 of the structure of the electronic device 100 shown in the drawings of the present application can meet the isolation requirement when the electronic device 100 is in the folded state. Figure 12 and Figure 13 As shown in the drawings, when the electronic device 100 is in the folded state, the isolation between the first antenna unit 1 and the second antenna unit 2 is also high, and the interference between them is very low, which can meet the isolation requirement.

[0141] As shown in the drawings, Figure 12 and Figure 13 As shown, when the electronic device is a foldable electronic device, the ground plate 3 of the electronic device 100 can include a first ground plate 31 and a second ground plate 32, and the main plate 4 can include a first main plate 41 and a second main plate 42, wherein the first ground plate 31 and the first main plate 41 are located in the first body part 101, and the second ground plate 32 and the second main plate 42 are located in the second body part 102.

[0142] As shown in the drawings, when the electronic device is a foldable electronic device, the first feed source 12 is arranged on the first main plate 41, the second feed source 23 is arranged on the second main plate 42, and the first ground end G21 and the second ground end G22 are grounded by connecting with the second ground plate 32.

[0143] In some embodiments, the ground plate 3 can be a middle frame, and when the electronic device 100 is a foldable electronic device, the first ground plate 31 and the second ground plate 32 are two middle frames respectively located in the first body part 101 and the second body part 102. The middle frame provides a ground potential as the ground of the entire electronic device 100.

[0144] In some embodiments, the ground plate 3 can also be the ground layer of the main plate 4. When the electronic device 100 is a foldable electronic device, the first ground plate 31 and the second ground plate 32 are respectively the ground layer of the first main plate 41 located in the first body part 101 and the second main plate 42 located in the second body part 102. The ground layer of the main plate 4 can be connected with the middle frame to provide a ground potential.

[0145] As shown in the drawings, Figure 15 is another current distribution diagram on the ground plate 3 when the first antenna unit 1 of the electronic device 100 in some embodiments of the present application is working. As shown in the drawings, Figure 15The current distribution diagram of the electronic device 100 in the unfolded state is shown in FIG. 6. The current distribution diagram of the electronic device 100 in the folded state is shown in FIG. 7. Figure 12 The current distribution diagram of the electronic device 100 in the unfolded state is shown in FIG. 6. The current distribution diagram of the electronic device 100 in the folded state is shown in FIG. 7.

[0146] When the first radiating branch 11 is excited under the first feed source 12, as shown in FIG. 5, the current mainly present on the ground plate 3 is also the current I12 coupled from the first radiating branch 11 to the ground, the return current I3' from the first ground end G21 of the second radiating branch 21 to the ground, and the return current I4' from the second ground end G22 of the third radiating branch 22 to the ground, which are currents in the first polarization direction, i.e., the direction perpendicular to the first end 1D or the second end 2D. Figure 15

[0147] Please refer to FIG. 6 and FIG. 7. Figure 16 FIG. 6 is another current distribution diagram of the ground plate 3 when the second antenna unit 2 of the electronic device 100 in some embodiments of the present application is working. In FIG. 6, Figure 16 The current distribution diagram of the electronic device 100 in the unfolded state is shown in FIG. 6. The current distribution diagram of the electronic device 100 in the folded state is shown in FIG. 7. Figure 12 The current distribution diagram of the electronic device 100 in the unfolded state is shown in FIG. 6. The current distribution diagram of the electronic device 100 in the folded state is shown in FIG. 7.

[0148] As shown in FIG. 6, the current mainly present on the ground plate 3 is the current along the direction parallel to the direction from the first ground end G21 to the second ground end G22, i.e., the current mainly perpendicular to the direction from the first radiating branch 11 to the ground, i.e., Figure 16 the current in the direction parallel to the first end 1D or the second end 2D as shown in FIG. 6. Figure 16 When the electronic device 100 is a foldable electronic device,

[0149] the ground plate 3 in FIG. 6 and FIG. 7 can be a second ground plate 32. Figure 15 Figure 16 Therefore, from the above description, it can be seen that the electronic device 100 in some embodiments of the present application has the following advantages.

[0150] Therefore, from the above description, it can be seen that the electronic device 100 in some embodiments of the present application has the following advantages. Figure 15 Figure 16 ​​​The current distribution of the ground plate 3 can also be seen that when the electronic device 100 is a foldable electronic device and the electronic device 100 is in a folded state, the first antenna unit 1 can still be caused to generate resonances mainly in two substantially perpendicular directions under the excitation of the first feed source 12 and the second antenna unit 2 and the third antenna unit 2 can also be caused to generate resonances mainly in two substantially perpendicular directions under the excitation of the second feed source 23, thereby realizing the same frequency and orthogonal polarization, and effectively avoiding or greatly reducing the interference between the first antenna unit 1 and the second antenna unit 2.

[0151] In the present application, parallel to an end, specifically refers to parallel to the end face of the end, and perpendicular to an end, specifically refers to perpendicular to the end face of the end.

[0152] Please refer to Figure 17 , which is another plan view of the electronic device 100 in some embodiments of the present application. As shown in Figure 17 , similarly, the electronic device 100 is a foldable electronic device, the electronic device 100 includes a first body part 101, a second body part 102, and a rotating shaft 103, the rotating shaft 103 is connected between the first body part 101 and the second body part 102, wherein the first body part 101 and the second body part 102 are rotatably connected by the rotating shaft 103.

[0153] As shown in Figure 17 , the first radiation branch 11 is provided on the first end 1D of the first body part 101, the second radiation branch 21 is provided on the second end 2D of the second body part 102, the second radiation branch 112 of the first radiation branch 11 is provided on the third end 3D of the first body part 101, and the third radiation branch 22 is provided on the fourth end 4D of the second body part 102. Wherein the first end 1D and the third end 3D are adjacent ends, the second end 2D and the fourth end 4D are adjacent ends, the first end 1D and the second end 2D are at least the same direction when the electronic device 100 is in a folded state, the third end 3D and the fourth end 4D are at least the same direction when the electronic device 100 is in a folded state, and the preset state includes a folded state.

[0154] That is, in some embodiments, the first radiation branch 11 can be provided on two adjacent ends of the first body part 101, and the second radiation branch 21 and the third radiation branch 22 can also be provided on two adjacent ends of the second body part 102. Thus, when the electronic device 100 is in a folded state, the first antenna unit 1 and the second antenna unit 2 substantially form theFigure 9-11 The structure is shown.

[0155] As shown in Figure 17 The first radiation branch 11 is bent, the second radiation branch 21 and the third radiation branch 22 are straight, the first radiation sub-branch 111 of the first radiation branch 11 is parallel to the first end 1D of the first body part 101, the second radiation sub-branch 112 of the first radiation branch 11 is parallel to the third end 3D of the first body part 101, the second radiation branch 21 is parallel to the second end 2D of the second body part 102, and the third radiation branch 22 is parallel to the fourth end 4D of the second body part 102.

[0156] The first end 1D and the second end 2D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102; or the first end 1D and the second end 2D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102.

[0157] The first end 1D and the second end 2D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102; or the first end 1D and the second end 2D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102. Figure 17 The first end 1D and the second end 2D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102; or the first end 1D and the second end 2D are the side end 13D away from the rotating shaft 103 of the first body part 101 and the second body part 102, and the third end 3D and the fourth end 4D can be the top end 11D or the bottom end 12D of the first body part 101 and the second body part 102.

[0158] When the electronic device 100 is in the preset state, i.e., in the folded state, the projection of the first radiation sub-branch of the first radiation branch on the first end portion is at least partially opposite to the projection of the second radiation branch on the second end portion, and the projection of the second radiation sub-branch of the first radiation branch on the third end portion is at least partially opposite to the projection of the third radiation branch on the fourth end portion. Thus, when the electronic device 100 is in the folded state and the first radiation branch 11 is excited under the first feed source 12, the second radiation branch 21 and the third radiation branch 22 are further coupled and excited to generate corresponding currents, and when the second radiation branch 21 and the third radiation branch 22 are excited under the second feed source 23, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are further coupled to generate corresponding currents, so that the resonance of the first polarization direction and the resonance of the second polarization direction can be better achieved.

[0159] In some embodiments, as shown in the foregoing Figure 1 、 Figure 9 and Figure 12 and the like. The electronic device 100 includes a bezel B1, and the first radiation branch 11, the second radiation branch 21, and the third radiation branch 22 can be metal segments arranged in the bezel B1.

[0160] In some embodiments, the B1 can be a metal bezel, and the first radiation branch 11, the second radiation branch 21, and the third radiation branch 22 can be metal bezel segments formed by opening gaps in the metal bezel.

[0161] In some embodiments, the B1 of the electronic device 100 can also be a non-metal bezel, and the first radiation branch 11, the second radiation branch 21, and the third radiation branch 22 can be metal segments arranged in the bezel B1 of the electronic device 100.

[0162] That is, in some embodiments, the bezel B1 of the electronic device 100 can also be a non-metal bezel with low conductivity, such as a plastic, a plastic, a ceramic, etc. The radiation branch 2 is a metal segment arranged in the bezel B1 of the electronic device 100, for example, a metal segment attached to the inner wall of the bezel B1 of the electronic device 100.

[0163] That is, in some embodiments of the present application, the radiation branch 2 can be directly formed by the bezel B1 or carried and fixed on the bezel B1.

[0164] In some embodiments, the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 are fixed on the antenna support formed by insulating material, and then fixed in the electronic device 100 through the antenna support.

[0165] In some embodiments, the antenna support can be made of LCP (Liquid Crystal Polymer). In other embodiments, the antenna support can be made of other insulating materials, such as plastic, resin, rubber, etc.

[0166] In some embodiments, when the first radiation branch 11 is arranged farther away from the mainboard 4 than the second radiation branch 21 and the third radiation branch 22, the first radiation branch 11 can be arranged at the frame B1 of the electronic device 100, while the second radiation branch 21 and the third radiation branch 22 are fixed on the antenna support formed by insulating material, and then fixed in the electronic device 100 closer to the mainboard 4 through the antenna support. Alternatively, when the first radiation branch 11, the second radiation branch 21 and the third radiation branch 22 are all fixed on the antenna support formed by insulating material, and then fixed in the electronic device 100 through the antenna support, the position of the first radiation branch 11 is farther away from the mainboard 4 than the second radiation branch 21 and the third radiation branch 22, i.e., closer to the frame B1.

[0167] In the present application, the first feed 12 and the second feed 23 can be the same feed or different feeds. When the first feed 12 and the second feed 23 are the same feed, the first signal end 121 of the first feed 12 can be any one of the second signal end 231 and the third signal end 232 of the second feed 23.

[0168] Thus, the electronic device 100 of the present application, through the first antenna unit 1 and the second antenna unit 2 of the above structure, even at least when the electronic device 100 is in the preset state, the first radiation branch 11 of the first antenna unit 1 and the second radiation branch 21 and the third radiation branch 22 of the second antenna unit 2 are adjacent, and the direction of the current generated by the first radiation branch 11 under the excitation of the first feed 12 is perpendicular to the direction of the current generated by the second radiation branch 21 and the third radiation branch 22 under the excitation of the second feed 23, and the direction of the current generally affects the radiation direction of the electromagnetic wave signal, which can be the radiation direction of the electromagnetic wave signal, so that the direction of the electromagnetic wave signal radiated by the first antenna unit 1 is perpendicular to the direction of the electromagnetic wave signal radiated by the second antenna unit 2, and the electromagnetic wave signals radiated by the two are basically not interfered with each other, thereby greatly improving the isolation between the first antenna unit 1 and the second antenna unit 2 working in the same preset frequency band.

[0169] Please refer to Figure 18 , the structure block diagram of the electronic device 100 in some embodiments of the present application. Among them, the electronic device 100 includes an antenna assembly A1, wherein the antenna assembly A1 can include the first antenna unit 1 and the second antenna unit 2 described above.

[0170] Specifically, as described above, the first antenna unit 1 includes the first radiation branch 11 and the first feed 12, the first radiation branch 11 includes a feed point F1 for connecting with the first feed 12, and the first radiation branch 11 works in the preset frequency band under the excitation of the first feed 12, that is, supports the transceiving of electromagnetic wave signals in the preset frequency band. The second antenna unit 2 includes the second radiation branch 21, the third radiation branch 22 and the second feed 23, wherein the second radiation branch 21 and the third radiation branch 22 are adjacent and spaced apart, and the second feed 23 is connected with the second radiation branch 21 and the third radiation branch 22. The second radiation branch 21 and the third radiation branch 22 work in the preset frequency band under the excitation of the second feed 23, that is, also support the transceiving of electromagnetic wave signals in the preset frequency band. Among them, the first radiation branch 11 is divided into a first radiation sub-branch 111 and a second radiation sub-branch 112 through the feed point F1, the second radiation branch 21 is adjacent and parallel to the first radiation sub-branch 111, and the third radiation branch 22 is adjacent and parallel to the second radiation sub-branch 112; wherein the first radiation branch 11 generates a current of a first polarization direction under the excitation of the first feed 12, the second radiation branch 21 and the third radiation branch 22 generate a current of a second polarization direction under the excitation of the second feed 23, and the first polarization direction and the second polarization direction are perpendicular.

[0171] The antenna assembly A1 can be applied to at least the electronic device 100 as shown in the foregoing Figure 1-11 The electronic device 100 as shown in the foregoing

[0172] Obviously, in some embodiments, the antenna assembly A1 can also be applied to at least the electronic device 100 as shown in the foregoing Figure 12-17 The electronic device 100 as shown in the foregoing

[0173] The more specific structure of the antenna assembly A1 can be referred to the foregoing related content, which will not be described here again.

[0174] The electronic device 100 further comprises a memory, a battery, etc., which are irrelevant to the improvement of the present application and will not be described here again.

[0175] The electronic device 100 of the present application can be any electronic device with an antenna, such as a mobile phone, a tablet computer, a notebook computer, etc.

[0176] The electronic device 100 and the antenna assembly A1 thereof of the present application, through the first antenna unit 1 and the second antenna unit 2 of the above structure, even at least when the electronic device 100 is in a preset state, the first radiation branch 11 of the first antenna unit 1 and the second radiation branch 21 and the third radiation branch 22 of the second antenna unit 2 are adjacent, and the direction of the current generated by the first radiation branch 11 under the excitation of the first feed 12 is perpendicular to the direction of the current generated by the second radiation branch 21 and the third radiation branch 22 under the excitation of the second feed 23, while the direction of the current usually affects the radiation direction of the electromagnetic wave signal, which can be the radiation direction of the electromagnetic wave signal, so as to make the direction of the electromagnetic wave signal radiated by the first antenna unit 1 perpendicular to the direction of the electromagnetic wave signal radiated by the second antenna unit 2, so that the electromagnetic wave signals radiated by the two are basically not interfered with each other, thereby greatly improving the isolation between the first antenna unit 1 and the second antenna unit 2 working in the same preset frequency band.

[0177] Each of the embodiments of the present application has its own focus, and the structure not described in some embodiments can be referred to the content of the corresponding structure in other embodiments without conflict.

[0178] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application; in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising: The electronic device comprises: a first antenna unit comprising a first radiating branch and a first feed, the first radiating branch comprising a feed point for connecting with the first feed, the first radiating branch operating at a preset frequency band under excitation of the first feed; a second antenna unit comprising a second radiating branch, a third radiating branch and a second feed, wherein the second radiating branch and the third radiating branch are adjacently and spacedly arranged, the second feed is connected with the second radiating branch and the third radiating branch, the second radiating branch and the third radiating branch operate at the preset frequency band under excitation of the second feed; wherein the first radiating branch is divided into a first radiating sub-branch and a second radiating sub-branch through the feed point, at least when the electronic device is in a preset state, the second radiating branch is adjacent and parallel to the first radiating sub-branch, and the third radiating branch is adjacent and parallel to the second radiating sub-branch; wherein the first radiating branch generates a current in a first polarization direction under excitation of the first feed, and the second radiating branch and the third radiating branch generate a current in a second polarization direction under excitation of the second feed, the first polarization direction and the second polarization direction are perpendicular.

2. The electronic device of claim 1, wherein, The first radiating branch comprises opposite first and second free ends, the feed point is located between the first and second free ends, the first radiating sub-branch is a part between the first free end of the first radiating branch and the feed point, and the second radiating sub-branch is a part between the second free end of the first radiating branch and the feed point; the second radiating branch comprises opposite first feed and first ground ends, the third radiating branch comprises opposite second feed and second ground ends, the first ground end is used for grounding, the first and second feed ends are adjacently and spacedly arranged, the second feed comprises second and third signal ends, the second signal end is connected with the first feed end of the second radiating branch, and the third signal end is connected with the second feed end of the second radiating branch.

3. The electronic device of claim 2, wherein, The first signal end of the first feed is used for outputting a first feed signal, the first radiating branch generates a current along a first polarization direction under excitation of the first feed, so that the resonance generated by the first radiating branch presents a first polarization direction, the second and third signal ends are used for outputting a second feed signal and a third feed signal respectively, the second and third feed signals have a phase difference of 180°, and the second and third radiating branches generate a current along a second polarization direction under excitation of the second and third feed signals respectively, so that the resonance generated by the second and third radiating branches presents a second polarization direction.

4. The electronic device of claim 3, wherein, The feeding point is located in the middle of the first radiation branch, the electric length of the first and second radiation sub-branches is equal and is equal to λ / 4, wherein λ is the wavelength corresponding to the preset frequency band, the first and second radiation sub-branches resonate in the preset frequency band under the excitation of the first feeding signal, and double resonance is realized; the electric length of the second and third radiation branches is equal to λ / 4, the second and third radiation branches resonate in the preset frequency band under the excitation of the second and third feeding signals respectively, and double resonance is also realized.

5. The electronic device of claim 4, wherein, At least when the electronic device is in a preset state, the first feeding end of the second radiation branch and the second feeding end of the third radiation branch are close to the feeding point, and the feeding point is located between the projections of the first feeding end and the second feeding end on the first radiation branch.

6. The electronic device of claim 5, wherein, The electronic device is a flat electronic device, the first, second and third radiation branches are arranged at the same target end of the electronic device, and the preset state includes any state.

7. The electronic device of claim 6, wherein, The first, second and third radiation branches are long straight strips, and the first, second and third radiation branches are parallel to the target end, the second and third radiation branches are arranged in a preset direction, and the preset direction is the length direction of the second and third radiation branches.

8. The electronic device of claim 7, wherein, The projection of the first radiation sub-branch of the first radiation branch on the target end at least partially overlaps the second radiation branch, and the projection of the second radiation sub-branch of the first radiation branch on the target end at least partially overlaps the third radiation branch.

9. The electronic device of claim 6, wherein, The electronic device includes a top end, a bottom end and two side ends, and the target end is any one of the top end, the bottom end and the two side ends.

10. The electronic device of claim 5, wherein, The electronic device is a flat electronic device, the first radiation sub-branch of the first radiation branch and the second radiation branch are arranged at a first target end of the electronic device, the second radiation sub-branch of the first radiation branch and the third radiation branch are arranged at a second target end of the electronic device, the first target end and the second target end are adjacent ends, and the preset state includes any state.

11. The electronic device of claim 10, wherein, The first radiation branch is bent, the second and third radiation branches are straight strips, the first radiation sub-branch of the first radiation branch and the second radiation branch are parallel to the first target end, and the second radiation sub-branch of the first radiation branch and the third radiation branch are parallel to the second target end.

12. The electronic device of claim 11, wherein, The projection of the first radiation sub-branch of the first radiation branch on the first target end at least partially overlaps the second radiation branch, and the projection of the second radiation sub-branch of the first radiation branch on the second target end at least partially overlaps the third radiation branch.

13. The electronic device of claim 10, wherein, The electronic device comprises a top end, a bottom end and two side ends; the first target end is the top end or the bottom end, and the second target end is one of the side ends; or, the first target end is one of the side ends, and the second target end is the top end or the bottom end.

14. The electronic device of claim 6 or 10, wherein, The electronic device further comprises a mainboard, and the first feed source and the second feed source are arranged on the mainboard; a feeding point of the first radiating branch is connected with the first feed source through a first feeding connecting member; a first feeding end of the second radiating branch is connected with a second signal end of the second feed source through a second feeding connecting member; and a second feeding end of the third radiating branch is connected with a third signal end of the second feed source through a third feeding connecting member; wherein the second radiating branch and the third radiating branch are closer to the mainboard than the first radiating branch, and the first feeding connecting member passes through a gap between the second radiating branch and the third radiating branch.

15. The electronic device of claim 5, wherein, The electronic device is a foldable electronic device, and the electronic device comprises a first body part, a second body part and a rotating shaft; the rotating shaft is connected between the first body part and the second body part, and the first body part and the second body part are rotationally connected through the rotating shaft; the first radiating branch is arranged at a first end of the first body part, and the second radiating branch and the third radiating branch are arranged at a second end of the second body part; the first end and the second end are at least directed to the same direction when the electronic device is in a folded state; and the preset state comprises the folded state.

16. The electronic device of claim 15, wherein, The first radiating branch, the second radiating branch and the third radiating branch are all long straight strips; the first radiating branch is parallel to the first end; the second radiating branch and the third radiating branch are parallel to the second end and are arranged along a preset direction; and the preset direction is the length direction of the second radiating branch and the third radiating branch.

17. The electronic device of claim 16, wherein, A projection of a first radiating sub-branch of the first radiating branch on the first end at least partially faces a projection of the second radiating branch on the second end; and a projection of a second radiating sub-branch of the first radiating branch on the first end at least partially faces a projection of the third radiating branch on the second end.

18. The electronic device of claim 15, wherein, The first body part and the second body part each comprise a top end, a bottom end and a side end away from the rotating shaft; and the first end and the second end are each one of the top end, the bottom end and the side end.

19. The electronic device of claim 5, wherein, The electronic device is a foldable electronic device, the electronic device comprises a first body part, a second body part and a rotating shaft, the rotating shaft is connected between the first body part and the second body part, wherein the first body part and the second body part are rotationally connected through the rotating shaft; the first radiation branchlet of the first radiation branch is arranged at a first end of the first body part, the second radiation branch is arranged at a second end of the second body part, the second radiation branchlet of the first radiation branch is arranged at a third end of the first body part, and the third radiation branch is arranged at a fourth end of the second body part, wherein the first end and the third end are adjacent ends, the second end and the fourth end are adjacent ends, the first end and the second end are at least oriented in the same direction when the electronic device is in a folded state, the third end and the fourth end are at least oriented in the same direction when the electronic device is in a folded state, and the preset state includes a folded state.

20. The electronic device of claim 19, wherein, The first radiation branch is in a bent shape, the second radiation branch and the third radiation branch are in a straight strip shape, the first radiation branchlet of the first radiation branch is parallel to the first end of the first body part, the second radiation branchlet of the first radiation branch is parallel to the third end of the first body part, the second radiation branch is parallel to the second end of the second body part, and the third radiation branch is parallel to the fourth end of the second body part.

21. The electronic device of claim 20, wherein, The projection of the first radiation branchlet of the first radiation branch on the first end at least partially faces the projection of the second radiation branch on the second end, and the projection of the second radiation branchlet of the first radiation branch on the third end at least partially faces the projection of the third radiation branch on the fourth end.

22. An antenna assembly, characterized by Comprise: A first antenna unit comprises a first radiation branch and a first feed source, the first radiation branch comprises a feed point for connecting with the first feed source, and the first radiation branch works in a preset frequency band under the excitation of the first feed source; A second antenna unit comprises a second radiation branch, a third radiation branch and a second feed source, wherein the second radiation branch and the third radiation branch are adjacent and spaced apart, the second feed source is connected with the second radiation branch and the third radiation branch, and the second radiation branch and the third radiation branch work in the preset frequency band under the excitation of the second feed source; Wherein the first radiation branch is divided into a first radiation branchlet and a second radiation branchlet through the feed point, the second radiation branch is adjacent and parallel to the first radiation branchlet, and the third radiation branch is adjacent and parallel to the second radiation branchlet; wherein the first radiation branch generates a current with a first polarization direction under the excitation of the first feed source, the second radiation branch and the third radiation branch generate a current with a second polarization direction under the excitation of the second feed source, and the first polarization direction and the second polarization direction are perpendicular.

Images