Multi-branch slot 5G mobile phone antenna and mobile equipment

Abstract

The utility model provides a multi-branch slot 5G mobile phone antenna and mobile equipment. The mobile phone antenna comprises a base material, and a feeding point, a first radiation arm, a second radiation arm, a third radiation arm and a grounding point which are arranged on the base material, the first radiation arm comprises a first end, a connecting section and a second end which are connected in sequence, and the first end is connected with the feeding point, extends towards the direction far away from the feeding point and is bent to form a first slot antenna; the connecting section extends in the direction away from the first end, and the second end is close to the grounding point. The second radiation arm is connected with the grounding point and extends along the direction far away from the grounding point; the second end of the first radiation arm is connected to the middle part of the second radiation arm; the third radiation arm is connected with the part close to the second end of the first radiation arm, and the first radiation arm and the part, close to the third radiation arm, of the second radiation arm form a second slot antenna. According to the utility model, three groups of resonance are generated, the bandwidth is optimized by using the first slot antenna and the second slot antenna, and the antenna efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mobile device communication, and specifically relates to a multi-branch slot 5G antenna and a mobile device. Background Art

[0002] With the rapid development of terminal electronic products, smartphones are being updated and replaced particularly rapidly, entering the 5G era. The number of 5G mobile phone antennas is increasing. Most existing mobile phone antenna designs design the antenna on the antenna bracket or the inside of the middle frame or the inside of the back shell, and use FPC or LDS / PDS laser engraving for routing as the antenna. This design scheme occupies a lot of internal space. The current full-screen design of mobile phones and the increasingly thin thickness of mobile phones have limited the antenna routing area. The antenna performance and bandwidth are restricted by the environment, resulting in poor performance and increasingly narrow bandwidth. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art, provide a multi-branch slot 5G mobile phone antenna, generate 3 groups of resonances, and use the first slot antenna and the second slot antenna to optimize the bandwidth and wavelength, so as to improve the antenna efficiency within the limited antenna routing space.

[0004] The utility model is realized by the following technical solutions:

[0005] A multi-branch slot 5G mobile phone antenna, comprising a substrate and a feeding point, a first radiating arm, a second radiating arm, a third radiating arm and a grounding point arranged on the substrate; the first radiating arm comprises a first end, a connecting section and a second end connected in sequence, the first end is connected to the feeding point, extends and bends in a direction away from the feeding point to form a first slot antenna; the connecting section extends in a direction away from the first end, and the second end is arranged close to the grounding point; the second radiating arm is connected to the grounding point and extends in a direction away from the grounding point; the second end of the first radiating arm is connected to the middle of the second radiating arm; The third radiating arm is connected to a portion close to the second end of the first radiating arm and extends in a direction away from the grounding point, and the first radiating arm and a portion of the second radiating arm close to the third radiating arm form a second slot antenna; the feeding point, the first radiating arm and the grounding point form a first antenna loop, and the first slot antenna is used to enhance the bandwidth of the first antenna loop; the feeding point, the second radiating arm and the grounding point form a second antenna loop; the feeding point, the third radiating arm and the grounding point form a third antenna loop, and the second slot antenna is used to enhance the bandwidth of the third antenna loop.

[0006] The utility model provides a multi-branch slot 5G mobile phone antenna, which generates three groups of resonances by setting a first radiation arm, a second radiation arm and a third radiation arm, and optimizes the bandwidth and wavelength by using the first slot antenna and the second slot antenna to improve the antenna efficiency in a limited antenna routing space.

[0007] Furthermore, the operating frequency band of the first antenna loop is 2300-2690MHz, and the length of the first radiation arm is 1 / 4-1 / 2 of its radiation wavelength; the operating frequency band of the second antenna loop is 700-960MHz, and the length of the second radiation arm is 1 / 4-1 / 2 of its radiation wavelength; the operating frequency band of the third antenna loop is 700-960MHz, and the length of the third radiation arm is 1 / 4-1 / 2 of its radiation wavelength.

[0008] Further, the first end of the first radiating arm includes a first bending arm and a second bending arm, one end of the first bending arm is connected to the feeding point, the first bending arm is extended in a direction close to the grounding point, the other end of the first bending arm is connected to the second bending arm, the second bending arm is extended from the other end of the first bending arm in a direction away from the grounding point; the first slot antenna is formed between the first bending arm and the second bending arm, and the first slot antenna extends in a direction toward the grounding point. The path of the first slot antenna is adjusted to match the first antenna loop.

[0009] Furthermore, the first slot antenna is in a strip shape, and the width of each part of the first slot antenna is the same. This configuration allows the current on each part of the first slot antenna to be evenly distributed, so that the first slot antenna has a stable phase center, achieving stable enhanced bandwidth.

[0010] Furthermore, one end of the second radiating arm is connected to the ground point, and the other end extends in a direction toward the feeding point, and a portion of the second radiating arm close to the ground point and a connecting section of the first radiating arm form the second slot antenna. The path of the second slot antenna is adjusted to match the third antenna loop.

[0011] Furthermore, the second slot antenna is in a strip shape, and the width of each part of the second slot antenna is the same. This arrangement makes the current on each part of the second slot antenna evenly distributed, so that the second slot antenna has a stable phase center, and achieves stable enhanced bandwidth.

[0012] Furthermore, the second end of the first radiating arm is bent; a third slot antenna is formed between the second end of the first radiating arm and the second radiating arm, the second slot antenna and the third slot antenna are respectively located on both sides of the second radiating arm, and the third slot antenna matches the working frequency band of the third antenna loop.

[0013] Furthermore, the third radiation arm is in a bent shape, which is beneficial for reducing the volume of the antenna.

[0014] The utility model also provides a mobile device, comprising a housing and the above-mentioned multi-branch slot 5G mobile phone antenna; the housing is formed by enclosing a front housing and a rear housing; the multi-branch slot 5G mobile phone antenna is located in the housing, and the substrate is arranged on the rear housing. The multi-branch slot 5G mobile phone antenna is arranged on the rear housing, so that it does not occupy the space in the housing alone, and saves the antenna bracket.

[0015] 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

[0016] Figure 1 This is a structural diagram of the multi-branch slot 5G mobile phone antenna of Example 1.

[0017] Figure 2 This is the S11 parameter diagram of the multi-branch slot 5G mobile phone antenna of Example 1.

[0018] Figure 3 This is the antenna efficiency diagram of the multi-branch slot 5G mobile phone antenna of Example 1. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Example 1

[0023] This embodiment provides a multi-branch slot 5G mobile phone antenna. Figure 1 This is a structural diagram of a multi-branch slot 5G mobile phone antenna. Please refer to Figure 1 The multi-branch slot 5G mobile phone antenna includes a substrate 1 and a feeding point 2, a first radiating arm 3, a second radiating arm 4, a third radiating arm 5 and a grounding point 6 arranged on the substrate 1; the first radiating arm 3 includes a first end 31, a connecting section 32 and a second end 33 connected in sequence, the first end 31 is connected to the feeding point 2, extends and bends in a direction away from the feeding point 2 to form a first slot antenna 7; the connecting section 32 extends in a direction away from the first end 31, and the second end 33 is arranged close to the grounding point 6;

[0024] The second radiation arm 4 is connected to the ground point 6 and extends in a direction away from the ground point 6; the second end 33 of the first radiation arm 3 is connected to the middle of the second radiation arm 4;

[0025] The third radiation arm 5 is connected to a portion close to the second end 33 of the first radiation arm 3 and is extended in a direction away from the grounding point 6. The first radiation arm 3 and a portion of the second radiation arm 4 close to the third radiation arm 5 form a second slot antenna 8.

[0026] The feeding point 2, the first radiating arm 3 and the grounding point 6 form a first antenna loop, and the first slot antenna 7 is used to enhance the bandwidth of the first antenna loop; the feeding point 2, the second radiating arm 4 and the grounding point 6 form a second antenna loop; the feeding point 2, the third radiating arm 5 and the grounding point 6 form a third antenna loop, and the second slot antenna 8 is used to enhance the bandwidth of the third antenna loop.

[0027] This embodiment provides a multi-branch slot 5G mobile phone antenna, which generates three groups of resonances by setting a first radiation arm 3, a second radiation arm 4 and a third radiation arm 5, and uses a first slot antenna 7 and a second slot antenna 8 to optimize the bandwidth and wavelength, thereby improving the antenna efficiency within a limited antenna routing space.

[0028] In one embodiment, the substrate is any one of an FPC substrate, an LDS substrate or a PDS substrate.

[0029] In this embodiment, the operating frequency band of the first antenna loop is 2300-2690MHz, and the length of the first radiation arm 3 is 1 / 4-1 / 2 of its radiation wavelength; the operating frequency band of the second antenna loop is 700-960MHz, and the length of the second radiation arm 4 is 1 / 4-1 / 2 of its radiation wavelength; the operating frequency band of the third antenna loop is 700-960MHz, and the length of the third radiation arm 5 is 1 / 4-1 / 2 of its radiation wavelength. Through the first radiation arm 3, the second radiation arm 4 and the third radiation arm 5, a multi-branch IFA antenna structure is formed to generate three groups of resonances, covering low frequency, medium frequency and high frequency.

[0030] The frequency band of the first slot antenna 7 matches the operating frequency band of the first antenna loop; the frequency band of the second slot antenna 8 matches the operating frequency band of the third antenna loop.

[0031] See also Figure 1 In this embodiment, the first end 31 of the first radiating arm 3 includes a first bending arm 311 and a second bending arm 312, one end of the first bending arm 311 is connected to the feeding point 2, the first bending arm 311 is extended in a direction close to the grounding point 6, the other end of the first bending arm 311 is connected to the second bending arm 312, the second bending arm 312 is extended from the other end of the first bending arm 311 in a direction away from the grounding point 6; a first slot antenna 7 is formed between the first bending arm 311 and the second bending arm 312, and the first slot antenna 7 is extended in a direction toward the grounding point 6. The path of the first slot antenna 7 is adjusted to match the first antenna loop.

[0032] See also Figure 1 In one embodiment, the end of the second radiating arm 4 away from the feeding point 2 is forked, which is beneficial to increase the radiation area.

[0033] In this embodiment, the first slot antenna 7 is in a strip shape, and the width of each part of the first slot antenna 7 is the same. This configuration allows the current on each part of the first slot antenna 7 to be evenly distributed, so that the first slot antenna 7 has a stable phase center, achieving stable enhanced bandwidth.

[0034] See also Figure 1 In this embodiment, one end of the second radiating arm 4 is connected to the ground point 6, and the other end extends in the direction toward the feeding point 2. A portion of the second radiating arm 4 close to the ground point 6 and the connecting section 32 of the first radiating arm 3 form a second slot antenna 8. The path of the second slot antenna 8 is adjusted to match the third antenna loop.

[0035] In this embodiment, the second slot antenna 8 is in a strip shape, and the width of each part of the second slot antenna 8 is the same. This arrangement makes the current on each part of the second slot antenna 8 evenly distributed, so that the second slot antenna 8 has a stable phase center, and achieves stable enhanced bandwidth.

[0036] See also Figure 1 In this embodiment, the second end 33 of the first radiating arm 3 is bent; the third radiating arm 5 is extended from the second end 33 close to the first radiating arm 3 toward the direction away from the grounding point 6, and a third slot antenna 9 is formed between the second end 33 of the first radiating arm 3 and the second radiating arm 4. The second slot antenna 8 and the third slot antenna 9 are respectively located on both sides of the second radiating arm 4, and the third slot antenna 9 matches the working frequency band of the third antenna loop. The second slot antenna 8 and the third slot antenna 9 are arranged close to the third radiating arm 5, which is conducive to enhancing the bandwidth of the third radiating arm 5.

[0037] See also Figure 1 In one embodiment, the second slot antenna 8 is connected to the third slot antenna 9, and the grounding point 6 is located between the second slot antenna 8 and the third slot antenna 9. The third slot antenna 9 may be in a bent shape.

[0038] See also Figure 1 In one embodiment, the connecting section 32, the second end 33 of the first radiating arm 3 and a portion of the second radiating arm 4 are connected in sequence to form a bending accommodating space, and the grounding point 6 is connected to an end of the second radiating arm 4 away from the connecting section 32 and is located in the bending accommodating space, so that the connecting section 32 and the second radiating arm 4 form a second slot antenna 8, and the second end and a portion of the second radiating arm 4 form a third slot antenna 9, and the second slot antenna 8 and the third slot antenna 9 are located on both sides of the second radiating arm 4.

[0039] See also Figure 1 In this embodiment, the third radiation arm 5 is bent. The bent third radiation arm 5 is beneficial to reducing the volume of the antenna.

[0040] Figure 2 This is a schematic diagram of the S11 parameters of a multi-branch slot 5G mobile phone antenna. Figure 2 The feeding point 2, the first radiating arm 3 and the grounding point 6 form a first antenna loop, the first slot antenna 7 is used to enhance the bandwidth of the first antenna loop, resonates in the high frequency band of 2300-2690MHz, and the return loss is (-4) ~ (-10) dB; the feeding point 2, the second radiating arm 4 and the grounding point 6 form a second antenna loop, resonates in the low frequency band of 700-960MHz, and the return loss is (-4) ~ (-10) dB; the feeding point 2, the third radiating arm 5 and the grounding point 6 form a third antenna loop, the second slot antenna 8 and the third slot antenna 9 are used to enhance the bandwidth of the third antenna loop, resonates in the medium frequency band of 1710-2170MHz, and the return loss is (-7) ~ (-6) dB.

[0041] Figure 3 This is a schematic diagram of the antenna efficiency of a multi-branch slot 5G mobile phone antenna. Please refer to Figure 3The feeding point 2, the first radiating arm 3 and the grounding point 6 form a first antenna loop, the first slot antenna 7 is used to enhance the bandwidth of the first antenna loop, resonates in the high frequency band of 2300-2690MHz, and the antenna efficiency is (-7)~(-5)dB; the feeding point 2, the second radiating arm 4 and the grounding point 6 form a second antenna loop, resonates in the low frequency band of 700-960MHz, and the antenna efficiency is (-16)~(-8)dB; the feeding point 2, the third radiating arm 5 and the grounding point 6 form a third antenna loop, the second slot antenna 8 and the third slot antenna 9 are used to enhance the bandwidth of the third antenna loop, resonates in the medium frequency band of 1710-2170MHz, and the antenna efficiency is (-7)~(-5)dB.

[0042] Example 2

[0043] This embodiment provides a mobile device, including a shell and the multi-branch slot 5G mobile phone antenna of Embodiment 1; the shell is formed by a front shell and a rear shell; the multi-branch slot 5G mobile phone antenna is located in the shell, and the substrate 1 is arranged on the rear shell.

[0044] In this embodiment, the multi-branch slot 5G mobile phone antenna is set on the back shell, and does not occupy the space in the shell separately. Compared with the prior art, in this embodiment, there is no need to set the antenna bracket in the shell, but directly attach the substrate to the back shell, saving the number of antenna brackets and the space occupied.

[0045] 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 multi-branch slot 5G mobile phone antenna, characterized in that: It comprises a substrate and a feeding point, a first radiation arm, a second radiation arm, a third radiation arm and a grounding point arranged on the substrate; The first radiating arm comprises a first end, a connecting section and a second end connected in sequence, the first end is connected to the feeding point, extends and bends in a direction away from the feeding point to form a first slot antenna; the connecting section extends in a direction away from the first end, and the second end is arranged close to the grounding point; The second radiation arm is connected to the ground point and extends in a direction away from the ground point; the second end of the first radiation arm is connected to the middle of the second radiation arm; The third radiation arm is connected to a portion close to the second end of the first radiation arm and is extended in a direction away from the grounding point, and the first radiation arm and a portion of the second radiation arm close to the third radiation arm form a second slot antenna; The feeding point, the first radiating arm and the grounding point form a first antenna loop, and the first slot antenna is used to enhance the bandwidth of the first antenna loop; The feeding point, the second radiating arm and the grounding point form a second antenna loop; The feeding point, the third radiating arm and the grounding point form a third antenna loop, and the second slot antenna is used to enhance the bandwidth of the third antenna loop.

2. The multi-branch slot 5G mobile phone antenna according to claim 1, characterized in that: The operating frequency band of the first antenna loop is 2300-2690 MHz, and the length of the first radiation arm is 1 / 4-1 / 2 of its radiation wavelength; The operating frequency band of the second antenna loop is 700-960 MHz, and the length of the second radiation arm is 1 / 4-1 / 2 of its radiation wavelength; The operating frequency band of the third antenna loop is 700-960 MHz, and the length of the third radiation arm is 1 / 4-1 / 2 of its radiation wavelength.

3. The multi-branch slot 5G mobile phone antenna according to claim 1, characterized in that: The first end of the first radiating arm includes a first bending arm and a second bending arm, one end of the first bending arm is connected to the feeding point, the first bending arm is extended in a direction close to the grounding point, the other end of the first bending arm is connected to the second bending arm, and the second bending arm is extended from the other end of the first bending arm in a direction away from the grounding point; The first slot antenna is formed between the first bending arm and the second bending arm, and the first slot antenna extends toward the ground point.

4. The multi-branch slot 5G mobile phone antenna according to claim 3, characterized in that ； The first slot antenna is in a strip shape, and the width of each part of the first slot antenna is the same.

5. The multi-branch slot 5G mobile phone antenna according to claim 1, characterized in that: One end of the second radiating arm is connected to the ground point, and the other end extends in a direction toward the feeding point. A portion of the second radiating arm close to the ground point and a connecting section of the first radiating arm form the second slot antenna.

6. The multi-branch slot 5G mobile phone antenna according to claim 5, characterized in that: The second slot antenna is in a strip shape, and the width of each part of the second slot antenna is the same.

7. The multi-branch slot 5G mobile phone antenna according to claim 5, characterized in that: The second end of the first radiating arm is bent; a third slot antenna is formed between the second end of the first radiating arm and the second radiating arm, the second slot antenna and the third slot antenna are respectively located on both sides of the second radiating arm, and the third slot antenna matches the working frequency band of the third antenna loop.

8. The multi-branch slot 5G mobile phone antenna according to claim 1, characterized in that: The third radiation arm is bent.

9. A mobile device, characterized in that: It comprises a housing and the multi-branch slot 5G mobile phone antenna according to any one of claims 1 to 8; The shell is formed by a front shell and a rear shell; the multi-branch gap 5G mobile phone antenna is located in the shell, and the substrate is arranged on the rear shell.

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