Double-feed common-ground Combo antenna and mobile equipment
By designing a double-feed common ground Combo antenna, using three antenna loops and radiation arm coupling, the problems of multi-band compatibility and space utilization in smartphone antenna design are solved, and efficient multi-band coverage and space optimization are achieved.
Patent Information
- Application Number
- CN202422062247.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Existing smartphone antenna designs are difficult to balance between supporting multi-band and miniaturization, especially the 2.4GHz WiFi and 5GHz WiFi bands, and antenna efficiency is limited by the space occupied by the camera and photoreceptor.
A double-feed common ground Combo antenna is designed, including a first feeding point, a second feeding point, a common location, a first radiation arm, a second radiation arm and a third radiation arm. By forming three antenna loops, three resonances are excited, and the coupling and spatial optimization of the radiation arm are used to achieve multi-band coverage.
Effective coverage of 2.4GHz WiFi, 5GHz WiFi and GPS frequency bands is achieved in a limited space, improving antenna bandwidth and efficiency, reducing space usage and reducing costs.
Smart Images
Figure CN223167653U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mobile device communications, and in particular relates to a dual-feed common ground Combo antenna and a mobile device. Background Art
[0002] With the rapid development of terminal electronic products, smartphones are being updated and replaced at a particularly rapid pace. Mobile phones are increasingly featuring more and more cameras, with three or four cameras becoming standard, and full-screen designs becoming the mainstream. The increasing frequency bands supported by smartphones, coupled with the increasing number of components and size, have reduced the clearance for antennas within smartphones. Cameras and sensors are crowding out antenna space, complicating the antenna environment and reducing antenna efficiency.
[0003] The current mainstream antenna design uses an IFA antenna mounted on the phone's midframe or back cover via a bracket. This design has a narrow bandwidth and relies on a two-branch, low-profile, high-profile structure to achieve dual resonance for GPS and 2.4GHz Wi-Fi. With the development of 5G communications, mainstream phones are beginning to support the 5GHz Wi-Fi band. While existing IFA antennas can support 5GHz Wi-Fi, their bandwidth is narrow and they cannot accommodate both 2.4GHz and 5GHz Wi-Fi, resulting in poor antenna performance. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a dual-fed common ground Combo antenna that can excite three resonances, clearly control the resonance area, and facilitate adjustment and optimization.
[0005] The utility model provides a dual-fed common ground Combo antenna, comprising a first feeding point, a second feeding point, a common location, a first radiating arm, a second radiating arm and a third radiating arm; the first feeding point, the first radiating arm and the common location are connected in sequence; the second radiating arm is arranged at an end of the first feeding point away from the first radiating arm, and the second radiating arm is bent and extends in a direction toward the common location; the second feeding point is located at an end of the common location away from the first feeding point, and the second feeding point is connected to the common location; one end of the third radiating arm is connected to the common location, and the other end is bent and extends in a direction away from the common location.
[0006] In the dual-fed common ground Combo antenna provided by the present invention, the first feeding point, the first radiating arm and the common location form a first antenna loop, the first feeding point, the second radiating arm and the common location form a second antenna loop, and the second feeding point, the third radiating arm and the common location form a third antenna loop. Three types of resonances can be excited, and the control resonance area is clear, which is convenient for adjustment and optimization.
[0007] Further, the extending direction of the second radiation arm is the same as that of the first radiation arm. The second extension arm is bent, and its extending direction is the same as that of the first radiation arm, which is beneficial to reducing the occupied space.
[0008] Further, the third radiation arm is bent and extends in a direction close to the first feeding point. The third radiation arm is bent and extends in a direction close to the first feeding point, so that the positions of the first radiation arm, the second radiation arm and the third radiation arm are relatively concentrated, which is beneficial to reducing the occupied space.
[0009] Further, the second radiation arm includes a second connection section and a second radiation section. One end of the second connection section is connected to the first feeding point, the second radiation section is connected to the other end of the second connection section and is bent, and the second radiation section extends in a direction parallel to the first radiation arm.
[0010] Further, the third radiation arm includes a third connection section, a third bending section and a third radiation section. One end of the third connection section is connected to the common ground point, the third bending section is connected to the third connection section and is bent, the third radiation section is connected to the end of the third bending section far from the third connection section and is bent, and the third radiation section extends in a direction parallel to the second radiation section.
[0011] Further, the second radiation section is coupled with the third radiation section. By coupling the second radiation section with the third radiation section, the antenna bandwidth is increased.
[0012] Further, the distance between the second radiation section and the third radiation section is 1-4 mm. The distance between the second radiation section and the third radiation section is controlled for coupling.
[0013] Further, the operating frequency band of the first radiation arm is the 5 GHz WiFi frequency band, and the length of the first radiation arm is 1 / 4 to 1 / 2 of its wavelength; the operating frequency band of the second radiation arm is the 2.4 GHz WiFi frequency band, and the length of the second radiation arm is 1 / 4 to 1 / 2 of its wavelength; the operating frequency band of the third radiation arm is the GPS frequency band, and the length of the third radiation arm is 1 / 4 to 1 / 2 of its wavelength. The dual-feed common-ground Combo antenna excites three resonances and can operate in three operating frequency bands to meet 2.4 GHz WiFi, 5 GHz WiFi and GPS communications.
[0014] The present utility model provides a mobile device, including a housing and the above-mentioned dual-feed common-ground Combo antenna, and the dual-feed common-ground Combo antenna is arranged in the housing.
[0015] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of a dual-fed common-ground Combo antenna.
[0017] Figure 2 It is an S11 parameter diagram of the dual-fed common-ground Combo antenna.
[0018] Figure 3 It is an antenna efficiency diagram of the dual-fed common-ground Combo antenna. Detailed Description of the Preferred Embodiment
[0019] The following further describes the embodiments of the present invention in detail with reference to the drawings and examples. It can be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention, rather than limiting the embodiments of the present invention. Additionally, it should be noted that for the sake of description, only parts related to the embodiments of the present invention are shown in the drawings, rather than all the structures.
[0020] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of distinguishing the description of the same technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, nor necessarily describing the order or time sequence. The terms can be interchanged under appropriate circumstances. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.
[0021] Similarly, the terms "fixed" and "connected" are also used in the specification and claims, and should not be construed as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in the device or system. It means that there is a path between device A and device B, which can be a path including other devices or tools.
[0022] Example 1
[0023] This embodiment provides a dual-fed common-ground Combo antenna. Figure 1 It is a schematic structural diagram of the dual-fed common-ground Combo antenna. Please refer to Figure 1, the dual-feed common-ground Combo antenna includes a first feed point 1, a second feed point 2, a common ground point 3, a first radiation arm 4, a second radiation arm 5, and a third radiation arm 6; the first feed point 1, the first radiation arm 4, and the common ground point 3 are connected in sequence; the second radiation arm 5 is disposed at one end of the first feed point 1 away from the first radiation arm 4, and the second radiation arm 5 is bent and extends in the direction toward the common ground point 3; the second feed point 2 is located at one end of the common ground point 3 away from the first feed point 1, and the second feed point 2 is connected to the common ground point 3; one end of the third radiation arm 6 is connected to the common ground point 3, and the other end is bent and extends in the direction away from the common ground point 3.
[0024] In the dual-feed common-ground Combo antenna provided in this embodiment, the first feed point 1, the first radiation arm 4, and the common ground point 3 form a first antenna loop, the first feed point 1, the second radiation arm 5, and the common ground point 3 form a second antenna loop, and the second feed point 2, the third radiation arm 6, and the common ground point 3 form a third antenna loop, which can excite three resonances, with a clear control of the resonance region, facilitating adjustment and optimization.
[0025] Specifically, the dual-feed common-ground Combo antenna includes a substrate 7, and the first feed point 1, the second feed point 2, the common ground point 3, the first radiation arm 4, the second radiation arm 5, and the third radiation arm 6 are disposed on the substrate 7. The substrate 7 can be an FPC substrate 7, and the first feed point 1, the second feed point 2, the common ground point 3, the first radiation arm 4, the second radiation arm 5, and the third radiation arm 6 can be disposed on the substrate 7 in forms such as LDS, PDS, LAP, etc.
[0026] In this embodiment, the second feed point 2 and the common ground point 3 are electrically connected through an FPC trace.
[0027] In this embodiment, the extending direction of the second radiation arm 5 is the same as that of the first radiation arm 4. The second extending arm is bent, and the extending direction is the same as that of the first radiation arm 4, which is beneficial to reducing the occupied space.
[0028] Please refer to Figure 1 , in this embodiment, the second radiation arm 5 includes a second connection section 51 and a second radiation section 52. One end of the second connection section 51 is connected to the first feed point 1, the second radiation section 52 is connected to the other end of the second connection section 51 and is bent, and the second radiation section 52 extends in a direction parallel to the first radiation arm 4.
[0029] In this embodiment, the third radiation arm 6 is bent and extends in the direction close to the first feed point 1. The third radiation arm 6 is bent and extends in the direction close to the first feed point 1, so that the positions of the first radiation arm 4, the second radiation arm 5, and the third radiation arm 6 are relatively concentrated, which is beneficial to reducing the occupied space.
[0030] Please refer to Figure 1, in this embodiment, the third radiation arm 6 includes a third connection section 61, a third bending section 62, and a third radiation section 63. One end of the third connection section 61 is connected to the common location 3. The third bending section 62 is connected to and bent from the third connection section 61. The third radiation section 63 is connected to and bent from one end of the third bending section 62 that is away from the third connection section 61. The third radiation section 63 extends in a direction parallel to the second radiation section 52.
[0031] Please refer to Figure 1 , in this embodiment, the third radiation arm 6 further includes a third extension section 64. One end of the third extension section 64 is connected to the end of the third radiation section 63, and the other end extends in a direction away from the second radiation section 52.
[0032] In this embodiment, the second radiation section 52 is coupled to the third radiation section 63. By coupling the second radiation section 52 with the third radiation section 63, the antenna bandwidth is increased. Specifically, the third connection section 61, the third bending section 62, and the third radiation section 63 form an accommodation space, and the second radiation section 52 is located within this accommodation space to form the coupling. The second radiation section 52 and the third radiation section 63 are parallel and in corresponding positions.
[0033] In this embodiment, the distance between the second radiation section 52 and the third radiation section 63 is 1 - 4 mm. The distance between the second radiation section 52 and the third radiation section 63 is controlled for coupling.
[0034] In this embodiment, the second radiation section 52 and the third radiation section 63 are linear to form a uniform gap to achieve a uniform magnetic field distribution, thereby achieving a stable coupling effect.
[0035] In this embodiment, the operating frequency band of the first radiation arm 4 is the 5 GHz WiFi frequency band, and the length of the first radiation arm 4 is 1 / 4 to 1 / 2 of its wavelength; the operating frequency band of the second radiation arm 5 is the 2.4 GHz WiFi frequency band, and the length of the second radiation arm 5 is 1 / 4 to 1 / 2 of its wavelength; the operating frequency band of the third radiation arm 6 is the GPS frequency band, and the length of the third radiation arm 6 is 1 / 4 to 1 / 2 of its wavelength. The dual-feed common-ground Combo antenna excites three resonances and can operate in three operating frequency bands. Compared with the existing IFA antenna, the dual-feed common-ground Combo antenna in this embodiment can achieve three operating frequency bands within the original antenna clearance, occupies a small area, meets the requirements of 2.4 GHz WiFi, 5 GHz WiFi, and GPS communications, and improves the antenna bandwidth through the coupling effect.
[0036] In this embodiment, the length of the first radiation arm 4 is 1 / 4 of its wavelength, the length of the second radiation arm 5 is 1 / 4 of its wavelength, and the length of the third radiation arm 6 is 1 / 4 of its wavelength.
[0037] Figure 2This is the S11 parameter diagram of the dual-feed common-ground Combo antenna. Please refer to Figure 2 , the first feeding point 1, the first radiating arm 4, and the common ground point 3 form the first antenna loop, with an operating frequency band of 5GHz WiFi and a return loss of -12dB; the first feeding point 1, the second radiating arm 5, and the common ground point 3 form the second antenna loop, with an operating frequency band of 2.4GHz WiFi and a return loss of (-16) to (-14)dB; the second feeding point 2, the third radiating arm 6, and the common ground point 3 form the third antenna loop, with an operating frequency band of GPS and a return loss of -13dB.
[0038] Figure 3 This is the antenna efficiency diagram of the dual-feed common-ground Combo antenna. Please refer to Figure 3 , the first feeding point 1, the first radiating arm 4, and the common ground point 3 form the first antenna loop, with an operating frequency band of 5GHz WiFi and an antenna efficiency of (-6) to (-5)dB; the first feeding point 1, the second radiating arm 5, and the common ground point 3 form the second antenna loop, with an operating frequency band of 2.4GHz WiFi and an antenna efficiency of (-6) to (-5)dB; the second feeding point 2, the third radiating arm 6, and the common ground point 3 form the third antenna loop, with an operating frequency band of GPS and an antenna efficiency of (-6.5) to (-5)dB.
[0039] Example 2
[0040] This embodiment provides a mobile device, including a housing and the above-mentioned dual-feed common-ground Combo antenna, and the dual-feed common-ground Combo antenna is disposed inside the housing.
[0041] The housing includes a front housing and a rear housing that are fixedly connected to each other, and the dual-feed common-ground Combo antenna is disposed inside the housing and attached to the rear housing. Specifically, the dual-feed common-ground Combo antenna includes a substrate 7, and the first feeding point 1, the second feeding point 2, the common ground point 3, the first radiating arm 4, the second radiating arm 5, and the third radiating arm 6 are disposed on the substrate 7 and attached to the rear housing through the substrate 7. The dual-feed common-ground Combo antenna in the mobile device satisfies 2.4GHz WiFi, 5GHz WiFi, and GPS communications, with a clear control resonance area, convenient and fast adjustment and optimization, a very small space occupied by the antenna in the device, and 5Gwifi coverage can be achieved by using the original antenna area for wiring, with better efficiency, without separately occupying the internal space of the communication device, reducing the number of antennas and lowering costs.
[0042] In this embodiment, the mobile device can be a smart terminal such as a laptop computer, a tablet computer, or a mobile phone.
[0043] The present utility model is not limited to the above embodiments. If various modifications or deformations of the present utility model do not depart from the spirit and scope of the present utility model, and provided that these modifications and deformations fall within the scope of the claims of the present utility model and equivalent technical scope, then the present utility model also intends to encompass these modifications and deformations.
Claims
1. A dual-feed common-ground Combo antenna, characterized in that: It includes a first feeding point, a second feeding point, a common ground point, a first radiation arm, a second radiation arm and a third radiation arm; The first feeding point, the first radiation arm and the common ground point are connected in sequence; the second radiation arm is arranged at one end of the first feeding point away from the first radiation arm, and the second radiation arm is bent and extends in the direction towards the common ground point; The second feeding point is located at one end of the common ground point away from the first feeding point, and the second feeding point is electrically connected to the common ground point; One end of the third radiation arm is connected to the common ground point, and the other end is bent and extends in the direction away from the common ground point.
2. The dual-feed common-ground Combo antenna according to claim 1, characterized in that: The extending direction of the second radiation arm is the same as that of the first radiation arm.
3. The dual-feed common-ground Combo antenna according to claim 2, characterized in that: The third radiation arm is bent and extends in the direction towards the first feeding point.
4. The dual-feed common-ground Combo antenna according to claim 3, characterized in that: The second radiation arm includes a second connection section and a second radiation section. One end of the second connection section is connected to the first feeding point, the second radiation section is connected to the other end of the second connection section and is bent, and the second radiation section extends in a direction parallel to the first radiation arm.
5. The dual-feed common-ground Combo antenna according to claim 4, characterized in that: The third radiation arm includes a third connection section, a third bending section and a third radiation section. One end of the third connection section is connected to the common ground point, the third bending section is connected to the third connection section and is bent, the third radiation section is connected to the end of the third bending section away from the third connection section and is bent, and the third radiation section extends in a direction parallel to the second radiation section.
6. The dual-feed common-ground Combo antenna according to claim 5, characterized in that: The second radiation section is coupled to the third radiation section.
7. The dual-feed common-ground Combo antenna according to claim 6, characterized in that: The distance between the second radiation section and the third radiation section is 1 - 4 mm.
8. The dual-feed common-ground Combo antenna according to any one of claims 1 - 7, characterized in that: The operating frequency band of the first radiation arm is the 5 GHz WiFi frequency band, and the length of the first radiation arm is 1 / 4 to 1 / 2 of its wavelength; The operating frequency band of the second radiation arm is the 2.4 GHz WiFi frequency band, and the length of the second radiation arm is 1 / 4 to 1 / 2 of its wavelength; The operating frequency band of the third radiation arm is the GPS frequency band, and the length of the third radiation arm is 1 / 4 to 1 / 2 of its wavelength.
9. A mobile device, characterized in that: It includes a housing and the dual-feed common-ground Combo antenna according to any one of claims 1 - 8, and the dual-feed common-ground Combo antenna is arranged inside the housing.