Mobile phone antenna unit and mobile device

Abstract

The utility model provides a mobile phone antenna unit and a mobile device. The mobile phone antenna unit comprises a common feeding point, a common grounding point, a common radiation arm, a first radiation body, a second radiation body and a third radiation body. The common feeding point and the common grounding point are respectively connected with the common radiation arm; the first radiator, the second radiator and the third radiator are respectively connected with the common radiation arm; the common feeding point, the common grounding point, the common radiation arm and the first radiator form a first antenna loop, the common feeding point, the common grounding point, the common radiation arm and the second radiator form a second antenna loop, and the common feeding point, the common grounding point, the common radiation arm and the third radiator form a third antenna loop. And the first antenna loop, the second antenna loop and the third antenna loop respectively generate resonance of different frequency bands. According to the utility model, three kinds of antenna resonance are realized, the number of antennas is reduced, the occupied space of the antennas in a mobile phone is reduced, and relatively high antenna efficiency is realized in a limited antenna clearance.

Description

Technical Field

[0001] The utility model belongs to the technical field of mobile equipment, and in particular relates to a mobile phone antenna unit and a mobile equipment. Background Art

[0002] With the rapid development of terminal electronic products, smartphones are updated particularly quickly. Mobile phone screens are getting bigger and bigger, with more and more functions, and the demand for antenna frequency bands is increasing. However, the clearance inside the mobile phone becomes smaller as the other electrical components in the mobile phone increase. The antenna structure environment is complex, which greatly affects the antenna efficiency and bandwidth.

[0003] In order to support multiple functions, 5G smartphones currently have an increasing number of antennas, and the antenna layout inside the phone is compact. The current mainstream 5G mobile phone antenna deployment plan is sub 6G, that is, the communication frequency band below 6GHz. Based on sub 6G, there are at least 12 antennas in a mobile phone. The isolation, bandwidth and efficiency between antennas are limited by the overall machine environment and frequency band requirements, making it difficult to ensure the frequency band bandwidth and good antenna performance. The layout position of the Sub-6G antenna is basically between the diversity and three-in-one antennas. The antenna clearance in the mobile phone is reduced, resulting in a limited antenna routing area. The antenna performance and bandwidth are limited by the environment, resulting in poor performance. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and provide a mobile phone antenna unit to achieve three antenna resonances, which is beneficial to reducing the number of antennas, reducing the space occupied by the antennas in the mobile phone, and achieving higher antenna efficiency within limited antenna clearance.

[0005] The utility model is realized by the following technical solutions:

[0006] A mobile phone antenna unit comprises a common feeding point, a common grounding point, a common radiating arm, a first radiator, a second radiator and a third radiator; the common feeding point and the common grounding point are respectively connected to the common radiating arm; the common feeding point, the common grounding point, the common radiating arm and the first radiator form a first antenna loop, the common feeding point, the common grounding point, the common radiating arm and the second radiator form a second antenna loop, the common feeding point, the common grounding point, the common radiating arm and the third radiator form a third antenna loop, and the first antenna loop, the second antenna loop and the third antenna loop respectively generate resonances of different frequency bands.

[0007] In the utility model, the first radiator, the second radiator and the third radiator share the common feeding point, the common grounding point and the common radiating arm to form three different antenna loops, thereby realizing three types of antenna resonances, which is beneficial to reducing the number of antennas, reducing the space occupied by the antenna in the mobile phone, and achieving higher antenna efficiency within limited antenna clearance.

[0008] Furthermore, the first antenna loop generates resonance in the N77 frequency band, and the total length of the shared radiator and the first radiator is 1 / 4-1 / 2 of its operating wavelength; the second antenna loop generates resonance in the N78 frequency band, and the total length of the shared radiator and the second radiator is 1 / 4-1 / 2 of its operating wavelength; the third antenna loop generates resonance in the N79 frequency band, and the total length of the shared radiator and the third radiator is 1 / 4-1 / 2 of its operating wavelength. By forming the first antenna loop, the second antenna loop and the third antenna loop, three antenna resonances are generated using one mobile phone antenna unit, and the bandwidth can cover 1700MHz, achieving full coverage of Sub6G in the N77, N78 and N79 frequency bands, reducing the number of antennas, reducing costs and not occupying space inside the mobile phone alone.

[0009] Furthermore, the first radiator is in a long strip shape, one end of which is connected to the common radiating arm, and the other end of which extends in a direction away from the common radiating arm.

[0010] Furthermore, one end of the second radiator is connected to the common radiating arm, and the other end extends in a direction away from the common radiating arm; one end of the third radiator is connected to the common radiating arm, and the other end extends in a direction away from the common radiating arm. The first radiator, the second radiator, and the third radiator extend in the same direction, which is conducive to making the antenna layout compact and reducing the area occupied by the antenna.

[0011] Furthermore, the second radiator is bent and arranged in a direction close to the first radiator. To adapt to the complex antenna design environment in the mobile phone, the second radiator is bent to reduce the volume and avoid the electrical components in the mobile phone.

[0012] Furthermore, the third radiator is bent and arranged in a direction close to the first radiator, and the second radiator is located between the first radiator and the third radiator.

[0013] Furthermore, the common radiating arm includes a radiating section, a feeding connection end and a grounding connection end; the feeding connection end and the grounding connection end are arranged on the same side of the radiating section, and are respectively connected to the common feeding point and the common grounding point; the first radiator is connected to the grounding connection end, the second radiator is connected to an end of the radiating section close to the grounding connection end, and the third radiator is connected to an end of the radiating section close to the feeding connection end. The first antenna loop, the second antenna loop and the third antenna loop of the IFA structure are respectively formed by this structure, which is compact and can realize three antenna frequency bands while reducing the volume.

[0014] Furthermore, the mobile phone antenna unit also includes an antenna substrate, and the common feeding point, the common grounding point, the common radiation arm, the first radiator, the second radiator and the third radiator are arranged on the antenna substrate.

[0015] The utility model also provides a mobile device, comprising a shell, a middle frame, a main board and the above-mentioned mobile phone antenna unit; the middle frame is installed inside the shell, and the main board is arranged on the middle frame; the antenna unit is arranged between the shell and the middle frame, and the common feeding point and the common grounding point of the antenna unit are both electrically connected to the main board.

[0016] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a mobile phone antenna unit.

[0018] Figure 2 It is the S11 parameter diagram of the mobile phone antenna unit.

[0019] Figure 3 It is the antenna efficiency diagram of the mobile phone antenna unit. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the embodiments of the utility model, rather than to limit the embodiments of the utility model. It should also be noted that, for ease of description, only parts related to the embodiments of the utility model are shown in the accompanying drawings, rather than all structures.

[0021] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] Similarly, the terms "fixed" and "connected" used in the specification and claims should not be construed as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to a device or system in which device A is directly connected to device B, but means that there is a path between device A and device B, which may be a path including other devices or tools.

[0023] Example 1

[0024] This embodiment provides a mobile phone antenna unit. Figure 1 This is a schematic diagram of the structure of the mobile phone antenna unit. Figure 1 , including a common feeding point 1, a common grounding point 2, a common radiating arm 3, a first radiator 4, a second radiator 5 and a third radiator 6; the common feeding point 1 and the common grounding point 2 are respectively connected to the common radiating arm 3; the common feeding point 1, the common grounding point 2, the common radiating arm 3 and the first radiator 4 form a first antenna loop, the common feeding point 1, the common grounding point 2, the common radiating arm 3 and the second radiator 5 form a second antenna loop, the common feeding point 1, the common grounding point 2, the common radiating arm 3 and the third radiator 6 form a third antenna loop, and the first antenna loop, the second antenna loop and the third antenna loop respectively generate resonances in different frequency bands.

[0025] In the mobile phone antenna unit provided in this embodiment, the first radiator 4, the second radiator 5 and the third radiator 6 share a feeding point 1, a common grounding point 2 and a common radiation arm 3 to form three different antenna loops, thereby realizing three types of antenna resonances, which is beneficial to reducing the number of antennas, reducing the space occupied by the antenna in the mobile phone, and achieving higher antenna efficiency within limited antenna clearance.

[0026] In this embodiment, the first antenna loop generates N77 frequency band resonance, and the total length of the shared radiator and the first radiator 4 is 1 / 4-1 / 2 of its working wavelength; the second antenna loop generates N78 frequency band resonance, and the total length of the shared radiator and the second radiator 5 is 1 / 4-1 / 2 of its working wavelength; the third antenna loop generates N79 frequency band resonance, and the total length of the shared radiator and the third radiator 6 is 1 / 4-1 / 2 of its working wavelength. By forming the first antenna loop, the second antenna loop and the third antenna loop, three antenna resonances are generated using one mobile phone antenna unit, and the bandwidth can cover 1700MHz, achieving full coverage of Sub 6G in the N77, N78 and N79 frequency bands, reducing the number of antennas, reducing costs and not occupying the internal space of the mobile phone separately.

[0027] See also Figure 1 In this embodiment, the first radiator 4 is in a long strip shape, one end of which is connected to the common radiation arm 3 and the other end of which extends in a direction away from the common radiation arm 3.

[0028] See also Figure 1 In this embodiment, one end of the second radiator 5 is connected to the common radiating arm 3, and the other end extends in a direction away from the common radiating arm 3; one end of the third radiator 6 is connected to the common radiating arm 3, and the other end extends in a direction away from the common radiating arm 3. The first radiator 4, the second radiator 5, and the third radiator 6 extend in the same direction, which is conducive to making the antenna layout compact and reducing the area occupied by the antenna.

[0029] See also Figure 1 In this embodiment, the second radiator 5 is bent and arranged in a direction close to the first radiator 4. In order to adapt to the complex antenna design environment in the mobile phone, the second radiator 5 is bent to reduce the volume and avoid the electrical components in the mobile phone.

[0030] See also Figure 1 In this embodiment, the third radiator 6 is bent and arranged in a direction close to the first radiator 4 , and the second radiator 5 is located between the first radiator 4 and the third radiator 6 .

[0031] In another embodiment, according to the specific distribution of components inside the mobile phone, the third radiator 6 and the second radiator 5 extend in opposite directions, which is beneficial to reducing the length of the mobile phone antenna unit.

[0032] See also Figure 1In this embodiment, the common radiation arm 3 includes a radiation section 31, a feed connection end 32 and a ground connection end 33; the feed connection end 32 and the ground connection end 33 are arranged on the same side of the radiation section 31, and are respectively connected to the common feed point 1 and the common ground point 2; the first radiator 4 is connected to the ground connection end 33, the second radiator 5 is connected to one end of the radiation section 31 close to the ground connection end 33, and the third radiator 6 is connected to one end of the radiation section 31 close to the feed connection end 32. The first antenna loop, the second antenna loop and the third antenna loop of the IFA structure are respectively formed by this structure, which is compact and can realize three antenna frequency bands while reducing the volume.

[0033] Specifically, see Figure 1 The second radiator 5 includes a second straight segment 51 and a second bending segment 52, one end of the second straight segment 51 is connected to one end of the radiator 31 close to the ground connection end 33, and the other end of the second straight segment 51 is connected to the second bending segment 52, wherein the second straight segment 51 is parallel to the long strip-shaped first radiator 4, and the second bending segment 52 is arranged perpendicular to the second straight segment 51, and the second bending segment 52 includes a second vertical segment 521 and a second horizontal segment 522, the second vertical segment 521 is connected to the second straight segment 51, and the second horizontal segment 522 is connected to the second bending segment 52. In a specific implementation, the second bending segment 52 may include at least two second vertical segments 521 and at least one second horizontal segment 522, and the second vertical segments 521 and the second horizontal segments 522 are alternately connected to form a bending structure. The third radiator 6 includes a third straight segment 61 and a third bent segment 62. One end of the third straight segment 61 is connected to one end of the radiating segment 31 close to the feeding connection end 32. The other end of the third straight segment 61 is connected to the third bent segment 62. The third bent segment 62 is bent in a direction close to or away from the second radiator 5.

[0034] Figure 2 This is the S11 parameter diagram of the mobile phone antenna unit. Figure 3 is the antenna efficiency diagram of the mobile phone antenna unit, please refer to Figure 2-3 In the N77 frequency band of 3.3-4.2GHz, the return loss of the first antenna loop is (-6) to (-8) dB, and the antenna efficiency is (-5) to (-7) dB; in the N78 frequency band of 3.3-3.8GHz, the return loss of the second antenna loop is (-4) to (-10) dB, and the antenna efficiency is (-5) to (-6) dB; in the N79 frequency band of 4.4-5.0GHz, the return loss of the third antenna loop is (-11) to (-16) dB, and the antenna efficiency is (-5) to (-6) dB. The antenna unit provided in this embodiment can support the N77, N78 and N79 frequency bands, with a bandwidth covering 1700MHz and a small area. In this embodiment, the length of the antenna unit is 12.4mm and the width is 9.63mm, which is suitable for 5G mobile phones with small antenna clearance.

[0035] See also Figure 1 In this embodiment, the mobile phone antenna unit also includes an antenna substrate 7, and a common feeding point 1, a common grounding point 2, a common radiation arm 3, a first radiator 4, a second radiator 5 and a third radiator 6 are arranged on the antenna substrate 7.

[0036] Example 2

[0037] This embodiment provides a mobile device, including a shell, a middle frame, a main board and the mobile phone antenna unit of embodiment 1; the middle frame is installed inside the shell, and the main board is arranged on the middle frame; the antenna unit is arranged between the shell and the middle frame, and the common feeding point 1 and the common grounding point 2 of the antenna unit are electrically connected to the main board.

[0038] In this embodiment, the antenna unit is mounted on the housing, which is beneficial to improving the antenna radiation efficiency.

[0039] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the claims of the present invention and the scope of equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A mobile phone antenna unit, characterized in that: It includes a common feeding point, a common grounding point, a common radiating arm, a first radiator, a second radiator and a third radiator; The common feeding point and the common grounding point are respectively connected to the common radiation arm; The first radiator, the second radiator and the third radiator are respectively connected to the common radiating arm; The common feeding point, the common grounding point, the common radiating arm and the first radiator form a first antenna loop, the common feeding point, the common grounding point, the common radiating arm and the second radiator form a second antenna loop, the common feeding point, the common grounding point, the common radiating arm and the third radiator form a third antenna loop, and the first antenna loop, the second antenna loop and the third antenna loop respectively generate resonances in different frequency bands.

2. The mobile phone antenna unit according to claim 1, characterized in that: The first antenna loop generates N77 frequency band resonance, and the total length of the common radiation arm and the first radiator is 1 / 4-1 / 2 of its working wavelength; The second antenna loop generates N78 frequency band resonance, and the total length of the common radiation arm and the second radiator is 1 / 4-1 / 2 of its working wavelength; The third antenna loop generates N79 frequency band resonance, and the total length of the common radiation arm and the third radiator is 1 / 4-1 / 2 of its working wavelength.

3. The mobile phone antenna unit according to claim 1, characterized in that: The first radiator is in a long strip shape, one end of which is connected to the common radiating arm, and the other end of which extends in a direction away from the common radiating arm.

4. The mobile phone antenna unit according to claim 3, characterized in that: One end of the second radiator is connected to the common radiating arm, and the other end extends in a direction away from the common radiating arm; One end of the third radiator is connected to the common radiating arm, and the other end thereof extends in a direction away from the common radiating arm.

5. The mobile phone antenna unit according to claim 4, characterized in that: The second radiator is bent and arranged in a direction close to the first radiator.

6. The mobile phone antenna unit according to claim 5, characterized in that: The third radiator is bent and arranged in a direction close to the first radiator, and the second radiator is located between the first radiator and the third radiator.

7. The mobile phone antenna unit according to any one of claims 1 to 6, characterized in that: The common radiation arm comprises a radiation section, a feeding connection end and a ground connection end; the feeding connection end and the ground connection end are arranged on the same side of the radiation section and are respectively connected to the common feeding point and the common ground point; The first radiator is connected to the ground connection end, the second radiator is connected to an end of the radiating section close to the ground connection end, and the third radiator is connected to an end of the radiating section close to the feeding connection end.

8. The mobile phone antenna unit according to claim 1, characterized in that: It also includes an antenna substrate, and the common feeding point, the common grounding point, the common radiation arm, the first radiator, the second radiator and the third radiator are arranged on the antenna substrate.

9. A mobile device, characterized in that: It comprises a housing, a middle frame, a mainboard, and a mobile phone antenna unit according to any one of claims 1 to 8; The middle frame is installed inside the outer shell, and the mainboard is arranged on the middle frame; The antenna unit is arranged between the shell and the middle frame, and a common feeding point and a common grounding point of the antenna unit are both electrically connected to the mainboard.

Images