Antenna apparatus and terminal device

Abstract

The present application discloses an antenna apparatus and a terminal device. The antenna apparatus comprises a radiator, a metal floor, and a loading assembly. The radiator comprises a first radiation stub, a second radiation stub, and a third radiation stub. One end of the second radiation stub is connected to one end of the first radiation stub. One end of the third radiation stub is connected to the other end of the first radiation stub. The other end of the second radiation stub and the other end of the third radiation stub are both connected to the metal floor. The first radiation stub and the metal floor are spaced apart by a preset gap. One end of the loading assembly is connected to the first radiation stub, and the other end of the loading assembly is connected to the metal floor.

Description

Antenna device and terminal equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 16, 2023, with application number 202322222886.1 and application name “An Antenna Device and Terminal Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of antenna technology, and in particular to an antenna device and a terminal equipment. Background Art

[0003] The current unbalanced-fed slot antenna is a narrowband antenna type. If there is a need for antenna miniaturization in the application scenario, antenna miniaturization is often accompanied by a narrowing of the impedance bandwidth, and the antenna bandwidth will further decrease.

[0004] Therefore, the current technology still needs to be improved and enhanced. Technical issues

[0005] Antenna miniaturization is often accompanied by a narrowing of the impedance bandwidth, which will further reduce the antenna bandwidth and reduce the communication capability of the integrated transceiver communication antenna. Technical Solutions

[0006] The present application provides an antenna device and a terminal device, which can effectively increase the bandwidth of the antenna device and improve the communication capability of the antenna device.

[0007] The present application provides an antenna device, which includes a radiator, a metal floor and a loading assembly; the radiator includes a first radiating branch, a second radiating branch and a third radiating branch, one end of the second radiating branch is connected to one end of the first radiating branch, and one end of the third radiating branch is connected to the other end of the first radiating branch; the other end of the second radiating branch and the other end of the third radiating branch are both connected to the metal floor, and a preset gap is separated between the first radiating branch and the metal floor; one end of the loading assembly is connected to the first radiating branch, and the other end of the loading assembly is connected to the metal floor.

[0008] In some embodiments of the antenna device, the loading component includes a resistor, an inductor, or a capacitor.

[0009] In some embodiments of the antenna device, the loading component includes a resistor, an inductor, and a capacitor.

[0010] In some embodiments of the antenna device, a feeding point is provided on the first radiating branch, the position where one end of the loading component is connected to the first radiating branch is the loading connection point, and the loading connection point and the feeding point are roughly symmetrical with the center of the first radiating branch as the center of symmetry.

[0011] In some embodiments of the antenna device, the radiator and the metal floor are located on the same plane.

[0012] In some embodiments of the antenna device, the radiator and the metal floor are located in two different planes.

[0013] In some embodiments, the antenna device further includes a microstrip feed line, and the feeding point is connected to the feed source through the microstrip feed line.

[0014] In some embodiments, the antenna device further includes a fourth radiating branch and a fifth radiating branch, the loading component is arranged on the metal floor, the fourth radiating branch is used to connect the first radiating branch and the loading component, and the fifth radiating branch is used to connect the feeding point and the feeding port on the metal floor.

[0015] In some embodiments of the antenna device, the second radiation branch includes a first radiation portion and a second radiation portion, the first radiation portion and the second radiation portion are L-shaped, the first radiation portion is used to connect to one end of the first radiation branch, and the second radiation portion is used to be welded to the metal floor.

[0016] In some embodiments of the antenna device, the third radiation branch includes a third radiation portion and a fourth radiation portion, the third radiation portion and the fourth radiation portion are L-shaped, the third radiation portion is used to connect to the other end of the first radiation branch, and the fourth radiation portion is used to be welded to the metal floor.

[0017] In some embodiments of the antenna device, a plurality of jacks are provided on the metal floor, the other end of the second radiation branch is inserted into the corresponding jack and connected to the metal floor, and the other end of the third radiation branch is inserted into the corresponding jack and connected to the metal floor.

[0018] In some embodiments of the antenna device, the fourth radiating branch includes a fifth radiating portion and a sixth radiating portion, the fifth radiating portion and the sixth radiating portion are L-shaped, the fifth radiating portion is used to connect to the first radiating branch, and the sixth radiating portion is used to be welded on the metal floor and electrically connected to the loading component.

[0019] In some embodiments of the antenna device, the fifth radiating branch includes a seventh radiating portion and an eighth radiating portion, the seventh radiating portion and the eighth radiating portion are L-shaped, the seventh radiating portion is used to connect to the first radiating branch, and the eighth radiating portion is used to be welded on a metal floor and connected to a feed source.

[0020] The present application also provides a terminal device, including the above-mentioned antenna device, wherein the antenna device includes:

[0021] a radiator, the radiator comprising a first radiating branch, a second radiating branch, and a third radiating branch, one end of the second radiating branch being connected to one end of the first radiating branch, and one end of the third radiating branch being connected to the other end of the first radiating branch;

[0022] a metal floor, wherein the other end of the second radiating branch and the other end of the third radiating branch are both connected to the metal floor, and a preset gap is provided between the first radiating branch and the metal floor;

[0023] A loading component is provided, wherein one end of the loading component is connected to the first radiation branch, and the other end of the loading component is connected to the metal floor.

[0024] In the terminal device of some embodiments, the loading component includes a resistor, an inductor, or a capacitor.

[0025] In the terminal device of some embodiments, the loading component includes a resistor, an inductor, and a capacitor.

[0026] In some embodiments of the terminal device, a feeding point is provided on the first radiating branch, the position where one end of the loading component is connected to the first radiating branch is the loading connection point, and the loading connection point and the feeding point are roughly symmetrical with the center of the first radiating branch as the center of symmetry.

[0027] In the terminal device of some embodiments, the radiator and the metal floor are located on the same plane.

[0028] In the terminal device of some embodiments, the radiator and the metal floor are located in two different planes.

[0029] In the terminal device of some embodiments, the antenna device further includes a microstrip feeder, and the feeding point is connected to the feed source via the microstrip feeder.

[0030] Technical Effects

[0031] The present application provides an antenna device and a terminal device, wherein the antenna device includes a radiator, a metal floor and a loading component, wherein the radiator includes a first radiating branch, a second radiating branch and a third radiating branch, one end of the second radiating branch is connected to one end of the first radiating branch, one end of the third radiating branch is connected to the other end of the first radiating branch, the other end of the second radiating branch and the other end of the third radiating branch are both connected to the metal floor, and a preset gap is separated between the first radiating branch and the metal floor; one end of the loading component is connected to the first radiating branch, and the other end of the loading component is connected to the metal floor; in the present application, the loading component is set to change the current distribution in the radiator, thereby achieving the purpose of impedance matching to improve the bandwidth of the antenna device, thereby improving the performance of the antenna device to enhance communication capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0033] FIG1 is a schematic diagram of a first structure of an antenna device provided in an embodiment of the present application.

[0034] FIG2 is a front view of a second structure of an antenna device provided in an embodiment of the present application.

[0035] FIG3 is a top view of a second structure of an antenna device provided in an embodiment of the present application.

[0036] FIG4 is a perspective view of a second structure of an antenna device provided in an embodiment of the present application.

[0037] FIG5 is a schematic diagram showing a comparison of return losses before and after a loading component is provided in the antenna device provided in an embodiment of the present application.

[0038] FIG6 is a schematic diagram showing a comparison of standing wave ratios before and after a loading component is provided in the antenna device provided in an embodiment of the present application.

[0039] Figure numerals: 11, first radiating branch; 12, second radiating branch; 13, third radiating branch; 14, fourth radiating branch; 15, fifth radiating branch; 121, first radiating portion; 122, second radiating portion; 131, third radiating portion; 132, fourth radiating portion; 141, fifth radiating portion; 142, sixth radiating portion; 151, seventh radiating portion; 152, eighth radiating portion; 20, metal floor; 30, loading component; 40, microstrip feed line; 50, substrate. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. The features specified as "first" and "second" may explicitly or implicitly include one or more features. In the description of this utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0042] Please refer to Figure 1. This embodiment provides an antenna device including a radiator, a metal floor 20 and a loading component 30, wherein the radiator includes a first radiating branch 11, a second radiating branch 12 and a third radiating branch 13, one end of the second radiating branch 12 is connected to one end of the first radiating branch 11, one end of the third radiating branch 13 is connected to the other end of the first radiating branch 11, the other end of the second radiating branch 12 and the other end of the third radiating branch 13 are both connected to the metal floor 20, and a preset gap h is separated from the first radiating branch 11 and the metal floor 20; one end of the loading component 30 is connected to the first radiating branch 11, and the other end of the loading component 30 is connected to the metal floor 20.

[0043] In this embodiment, the first radiating branch 11 is the resonant side of the antenna device, and the second radiating branch 12 and the third radiating branch 13 are both connected to the ground, i.e., the metal floor 20, as a short-circuit side; the loading component 30 in this embodiment can be a conductor; specifically, the loading component can be a pure resistor, or an inductor or capacitor, or a component with resistance, inductance and capacitance resistance characteristics, which is not limited in this application. Among them, the loading component 30 can be set near the second radiating branch 12, or near the third radiating branch 13. The specific position of the loading component 30 can be obtained through debugging, which is not specifically limited in this embodiment. In this application, the loading component 30 is set to change the current distribution in the radiator, thereby achieving the purpose of impedance matching to improve the bandwidth of the antenna device, thereby improving the performance of the antenna device to enhance the communication capability.

[0044] In some embodiments, a feeding point B is provided on the first radiating branch 11, and the position where one end of the loading component 30 is connected to the first radiating branch 11 is the loading connection point A, and the loading connection point A and the feeding point B are roughly symmetrical with the center of the first radiating branch 11 as the symmetry center. That is, if the loading component 30 is set near the second radiating branch 12, the feeding point B can be set near the third radiating branch 13, and the corresponding feeding is close to the third radiating branch 13. In this embodiment, the feeding position is set at a position close to the end of the first radiating branch 11, rather than near the center of the first radiating branch 11, to form an unbalanced feeding method. The loading component 30 is set near the first radiating branch 11, that is, the position symmetrical to the center of the resonant edge, which can change the distribution of current in the radiator, thereby achieving the purpose of impedance matching, thereby improving the bandwidth of the antenna device, and then improving the performance of the antenna device. Among them, the impedance of the loading component 30 is adjusted according to the performance parameters of the antenna device of the communication system, and this application does not make specific restrictions on this.

[0045] In some embodiments, the length of the first radiation branch 11 , ie, the resonance side, in the present application is generally about half a wavelength.

[0046] As an embodiment, the radiator of the antenna device in this application can be arranged in the same plane as the metal floor 20, as shown in Figure 1. When the radiator and the metal floor 20 are arranged in the same plane, the antenna device can be connected to the feed via a microstrip feeder 40. The corresponding antenna device can also be provided with a microstrip feeder 40, and the feeding point B of the first radiating branch 11 is connected to the feed source via the microstrip feeder 40. When the radiator and the metal floor 20 are arranged in the same plane, the radiator can be supported by the substrate 50.

[0047] As an embodiment, the antenna device in the present application may further set a feeding point B at the position of the loading component 30 to form parallel feeding.

[0048] Please refer to Figures 2, 3, and 4 together. As another embodiment, the radiator and the metal floor 20 may also be located in different planes, that is, the radiator and the metal floor 20 are arranged on different planes to form a three-dimensional antenna structure, as shown in Figure 4. Specifically, when the radiator and the metal floor 20 are arranged on different planes, the antenna device further includes a fourth radiating branch 14 and a fifth radiating branch 15. The loading assembly 30 is disposed on the metal floor 20. The fourth radiating branch 14 is used to connect the first radiating branch 11 and the loading assembly 30, and the fifth radiating branch 15 is used to connect the feeding point B and the feeding port on the metal floor 20. The fourth radiating branch 14 facilitates the installation of the loading assembly 30, and the fifth radiating branch 15 facilitates the connection with the feeder.

[0049] Among them, the second radiating branch 12 includes a first radiating portion 121 and a second radiating portion 122, the first radiating portion 121 and the second radiating portion 122 are L-shaped, the first radiating portion 121 is used to connect to one end of the first radiating branch 11, and the second radiating portion 122 is used to be welded to the metal floor 20; the third radiating branch 13 includes a third radiating portion 131 and a fourth radiating portion 132, the third radiating portion 131 and the fourth radiating portion 132 are L-shaped, the third radiating portion 131 is used to connect to the other end of the first radiating branch 11, and the fourth radiating portion 132 is used to be welded to the metal floor 20; that is, in this embodiment, the second radiating branch 12 and the third radiating branch 13 are set to be L-shaped so that they can be welded to the metal floor 20 to form a patch connection structure.

[0050] Of course, in some embodiments, the second radiating branch 12 and the third radiating branch 13 can also be plugged into the metal floor 20 to form a plug-in connection structure. Specifically, the metal floor 20 is provided with a plurality of sockets, and the other end of the second radiating branch 12 is inserted into the corresponding socket to connect to the metal floor 20, and the other end of the third radiating branch 13 is inserted into the corresponding socket to connect to the metal floor 20.

[0051] In some embodiments, the fourth radiation branch 14 includes a fifth radiation portion 141 and a sixth radiation portion 142, and the fifth radiation portion 141 and the sixth radiation portion 142 are L-shaped. The fifth radiation portion 141 is used to connect with the first radiation branch 11, and the sixth radiation portion 142 is used to be welded on the metal floor 20 and electrically connected to the loading assembly 30; the fifth radiation branch 15 includes a seventh radiation portion 151 and an eighth radiation portion 152, and the seventh radiation portion 151 and the eighth radiation portion 152 are L-shaped. The seventh radiation portion 151 is used to connect with the first radiation branch 11, and the eighth radiation portion 152 is used to be welded on the metal floor 20 and connected to the feed source; similarly, in this embodiment, the fourth radiation branch 14 and the fifth radiation branch 15 are set to be L-shaped to facilitate welding of the fourth radiation branch 14 and the fifth radiation branch 15 to the metal floor 20.

[0052] Please refer to Figure 5, which is a schematic diagram comparing the return loss of the antenna device provided in an embodiment of the present application before and after the installation of the loading component 30. The return loss curve before loading is shown as Curve A in Figure 5, and the return loss curve after loading is shown as Curve B in Figure 5. As can be seen from the figure, the return loss of the antenna device at different frequencies can be reduced by 5dB to 22dB before the installation of the loading component 30.

[0053] Please refer to Figure 6, which is a schematic diagram comparing the standing wave ratio before and after the loading component 30 is set in the antenna device provided by the embodiment of the present application. The standing wave ratio curve before loading is shown as curve C in Figure 6, and the standing wave ratio curve after loading is shown as curve D in Figure 6. According to the figure, if the antenna device is provided with the loading component 30, that is, before the loading component 30 is set, the radiation frequency range is 2.41GHz-2.50GHz; and after the loading component 30 is set, that is, after loading, the radiation frequency range of the antenna device is 2.36GHz-2.54GHz. By comparison, it can be seen that by setting the loading component 30 in the present application, the bandwidth can be effectively expanded to improve the performance of the antenna device.

[0054] The present application also provides a terminal device, which includes the above-mentioned antenna device. The antenna device can be used as an integrated transceiver antenna device in the terminal device. Since the antenna device has been described in detail, it will not be repeated here.

[0055] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] The above is a detailed introduction to the antenna device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An antenna device, wherein: include: A radiator, the radiator comprising a first radiating branch, a second radiating branch and a third radiating branch, one end of the second radiating branch is connected to one end of the first radiating branch, and one end of the third radiating branch is connected to the other end of the first radiating branch; a metal floor, the other end of the second radiation branch and the other end of the third radiation branch are both connected to the metal floor, and a preset gap is spaced between the first radiation branch and the metal floor; A loading component, one end of which is connected to the first radiation branch, and the other end of which is connected to the metal floor.

2. The antenna device according to claim 1, wherein: The loading component includes a resistor, an inductor, or a capacitor.

3. The antenna device according to claim 1, wherein: The loading components include resistors, inductors and capacitors.

4. The antenna device according to claim 1, wherein: A feeding point is provided on the first radiating branch, and the position where one end of the loading component is connected to the first radiating branch is the loading connection point. The loading connection point and the feeding point are roughly symmetrical with the center of the first radiating branch as the symmetry center.

5. The antenna device according to claim 4, wherein: The radiator and the metal floor are located on the same plane.

6. The antenna device according to claim 4, wherein: The radiator and the metal floor are located in two different planes.

7. The antenna device according to claim 5, wherein: The antenna device further comprises a microstrip feed line, and the feeding point is connected to a feed source via the microstrip feed line.

8. The antenna device according to claim 6, wherein: The antenna device also includes a fourth radiating branch and a fifth radiating branch. The loading component is arranged on the metal floor. The fourth radiating branch is used to connect the first radiating branch and the loading component. The fifth radiating branch is used to connect the feeding point and the feeding port on the metal floor.

9. The antenna device according to claim 8, wherein: The second radiation branch includes a first radiation portion and a second radiation portion, the first radiation portion and the second radiation portion are L-shaped, the first radiation portion is used to be connected to one end of the first radiation branch, and the second radiation portion is used to be welded to the metal floor.

10. The antenna device according to claim 9, wherein: The third radiation branch includes a third radiation portion and a fourth radiation portion, the third radiation portion and the fourth radiation portion are L-shaped, the third radiation portion is used to be connected to the other end of the first radiation branch, and the fourth radiation portion is used to be welded on the metal floor.

11. The antenna device according to claim 8, wherein: The metal floor is provided with a plurality of sockets, the other end of the second radiation branch is inserted into the corresponding socket to be connected to the metal floor, and the other end of the third radiation branch is inserted into the corresponding socket to be connected to the metal floor.

12. The antenna device according to claim 11, wherein: The fourth radiation branch includes a fifth radiation portion and a sixth radiation portion, the fifth radiation portion and the sixth radiation portion are L-shaped, the fifth radiation portion is used to connect with the first radiation branch, and the sixth radiation portion is used to be welded on the metal floor to be electrically connected with the loading assembly.

13. The antenna device according to claim 12, wherein: The fifth radiation branch includes a seventh radiation part and an eighth radiation part, the seventh radiation part and the eighth radiation part are L-shaped, the seventh radiation part is used to be connected to the first radiation branch, and the eighth radiation part is used to be welded on the metal floor and connected to the feed source.

14. A terminal device, wherein: An antenna device is included, the antenna device comprising: A radiator, the radiator comprising a first radiating branch, a second radiating branch and a third radiating branch, one end of the second radiating branch is connected to one end of the first radiating branch, and one end of the third radiating branch is connected to the other end of the first radiating branch; The other end of the second radiation branch and the other end of the third radiation branch are connected to the metal floor, and the first radiation branch is spaced from the metal floor by a preset distance. gap; A loading component, one end of which is connected to the first radiation branch, and the other end of which is connected to the metal floor.

15. The terminal device according to claim 14, wherein: The loading component includes a resistor, an inductor, or a capacitor.

16. The terminal device according to claim 14, wherein: The loading components include resistors, inductors and capacitors.

17. The terminal device according to claim 14, wherein: A feeding point is provided on the first radiating branch, and the position where one end of the loading component is connected to the first radiating branch is the loading connection point. The loading connection point and the feeding point are roughly symmetrical with the center of the first radiating branch as the symmetry center.

18. The terminal device according to claim 17, wherein: The radiator and the metal floor are located on the same plane.

19. The terminal device according to claim 17, wherein: The radiator and the metal floor are located in two different planes.

20. The terminal device according to claim 18, wherein: The antenna device further comprises a microstrip feed line, and the feeding point is connected to a feed source via the microstrip feed line.

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