5G mobile phone antenna structure

Abstract

The utility model discloses a 5G mobile phone antenna structure, which comprises a flexible substrate, one side of the flexible substrate is provided with a low-frequency arm, the other side of the flexible substrate is provided with a high-frequency arm, the low-frequency arm is provided with a low-frequency radiation unit, the high-frequency arm is provided with a high-frequency radiation unit, and the low-frequency radiation unit adopts an inverted F-shaped structural design. The high-frequency radiation units are designed in an L-shaped structure, isolation grooves are formed between the low-frequency radiation units and the high-frequency radiation units and located on the upper surface of the flexible substrate, a first metal grounding layer is installed below the low-frequency radiation units and located on the flexible substrate, and a second metal grounding layer is arranged below the high-frequency radiation units and located on the lower surface of the flexible substrate. According to the utility model, the multi-band use requirements of high and low frequencies can be met through the arranged frequency radiation unit and the low frequency radiation unit, and an antenna structure does not need to be additionally arranged, so that the internal space of the mobile phone can be effectively saved, and the internal space of the mobile phone is prevented from being excessively occupied by a plurality of antennas.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone antenna technology, specifically a 5G mobile phone antenna structure. Background Technology

[0002] An antenna is a transducer that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium, or vice versa. It is a component in wireless equipment used to transmit or receive electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy all rely on antennas to transmit information using electromagnetic waves. In addition, antennas are also needed for non-signal energy radiation in the transmission of energy using electromagnetic waves.

[0003] In the existing technology, 5G mobile phone antennas are widely used, but the traditional 5G mobile phone antenna structure has poor multi-band adaptability. Multiple independent antennas are required to meet the usage requirements of high and low frequency bands. However, adding mobile phone antennas will increase the space occupied inside the mobile phone, making it inconvenient for layout and assembly, and resulting in poor practicality. Therefore, this utility model proposes a multi-band 5G mobile phone antenna structure. Utility Model Content

[0004] The purpose of this invention is to provide a 5G mobile phone antenna structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 5G mobile phone antenna structure, comprising a flexible substrate, a low-frequency arm disposed on one side of the flexible substrate, a high-frequency arm disposed on the other side of the flexible substrate, a low-frequency radiating unit disposed on the low-frequency arm, and a high-frequency radiating unit disposed on the high-frequency arm. The low-frequency radiating unit adopts an inverted "F" shaped structure design, and the high-frequency radiating unit adopts an "L" shaped structure design. An isolation groove is formed between the low-frequency radiating unit and the high-frequency radiating unit on the upper surface of the flexible substrate. A carbon nanotube coating is coated in the isolation groove. A first metal grounding layer is installed below the low-frequency radiating unit on the flexible substrate, and a second metal grounding layer is disposed below the high-frequency radiating unit on the lower surface of the flexible substrate.

[0006] Preferably, conductive holes are provided on both the first metal grounding layer and the second metal grounding layer, and the conductive holes penetrate through the metal grounding layer and the flexible substrate.

[0007] Preferably, the conductive hole is filled with conductive pillars, which are conductive silver pillars, and the conductive pillars on both sides are electrically connected to the low-frequency radiation unit and the high-frequency radiation unit, respectively.

[0008] Preferably, the low-frequency radiation unit includes a vertical short-circuit stub, which connects to two first-stage horizontal radiation arms, and a plurality of feed points are provided on the vertical short-circuit stub.

[0009] Preferably, the high-frequency radiation unit includes a vertical feed stub, and the tail end of the vertical feed stub is connected to a secondary horizontal radiation arm.

[0010] Preferably, the flexible substrate is made of polyimide material with a thickness of 0.1-0.3 mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention integrates both a high-frequency radiating unit and a low-frequency radiating unit on a single antenna. The inverted F-shaped low-frequency radiating unit and the L-shaped high-frequency radiating unit work together to cover both the Sub-6GHz band and the millimeter-wave high-frequency band. By using these two radiating units, the invention can meet the multi-band usage requirements of both high and low frequencies without the need for additional antenna structures. This effectively saves internal space in the phone and avoids excessive space occupation by multiple antennas. It achieves simultaneous coverage of both the Sub-GHz band and the millimeter-wave band within the limited internal space of the phone, making it more practical.

[0013] Meanwhile, by using the inverted F-shaped low-frequency radiation unit and the L-shaped high-frequency radiation unit in combination, the current paths of high-frequency radiation are made orthogonal, which can effectively reduce signal coupling.

[0014] Furthermore, the flexible substrate material of this invention has a certain degree of bendability, which makes the antenna of this invention not only suitable for candybar phones, but also suitable for curved assembly based on the curvature of the phone frame, greatly improving the overall structural applicability of this invention and reducing its usage limitations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the upper surface structure of a 5G mobile phone antenna according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the lower surface structure of a 5G mobile phone antenna according to an embodiment of the present invention;

[0017] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of region A.

[0018] In the figure: 1. Flexible substrate; 2. Low-frequency arm; 3. High-frequency arm; 4. Low-frequency radiating unit; 401. Vertical short-circuit stub; 402. First-level horizontal radiating arm; 403. Feed point; 5. High-frequency radiating unit; 501. Vertical feed stub; 502. Second-level horizontal radiating arm; 6. Isolation groove; 7. First metal grounding layer; 8. Second metal grounding layer; 9. Conductive hole; 10. Conductive post. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-3 The present invention provides an embodiment of a 5G mobile phone antenna structure, including a flexible substrate 1. The flexible substrate 1 is made of polyimide material with a thickness of 0.1-0.3mm. The flexible substrate material has a certain degree of bendability, so that the antenna of the present invention can be used not only for candybar mobile phones, but also for curved assembly of the mobile phone frame, thereby improving the overall structural applicability of the present invention.

[0023] A low-frequency arm 2 is provided on one side of the flexible substrate 1, and a high-frequency arm 3 is provided on the other side of the flexible substrate 1. A low-frequency radiation unit 4 is provided on the low-frequency arm 2, and a high-frequency radiation unit 5 is provided on the high-frequency arm 3. The low-frequency radiation unit 4 adopts an inverted "F" shaped structure design, and the high-frequency radiation unit 5 adopts an "L" shaped structure design. The low-frequency radiation unit 4 and the high-frequency radiation unit 5 can be processed by laser etching.

[0024] Furthermore, the low-frequency radiation unit 4 includes a vertical short-circuit stub 401, which is connected to two first-level horizontal radiation arms 402. Several feed points 403 are provided on the vertical short-circuit stub 401 to form a signal radiation unit for the Sub-6GHz low-frequency band. The feed points 403 are used to connect to the motherboard of the mobile phone.

[0025] Furthermore, the high-frequency radiating element 5 includes a vertical feed stub 501, the tail end of which is connected to a secondary horizontal radiating arm 502, thereby forming a millimeter-wave high-frequency antenna element.

[0026] This invention integrates a high-frequency radiation unit 5 and a low-frequency radiation unit 4 on a single antenna. The inverted F-shaped low-frequency radiation unit 4 and the L-shaped high-frequency radiation unit 5 work together to cover both the Sub-6GHz band and the millimeter-wave high-frequency band. By using the high-frequency radiation unit 5 and the low-frequency radiation unit 4, the multi-band usage requirements of both high and low frequencies can be met without the need for additional antenna structures. This effectively saves internal space in the mobile phone and avoids excessive space occupation by multiple antennas. It achieves simultaneous coverage of the Sub-6GHz band and the millimeter-wave dual-band within the limited internal space of the mobile phone, making it more practical.

[0027] Meanwhile, by using the inverted F-shaped low-frequency radiation unit 4 and the L-shaped high-frequency radiation unit 5 together, the current paths of high-frequency radiation are made orthogonal, which can effectively reduce signal coupling and reduce resonance interference between the high-frequency band and the low-frequency band.

[0028] In order to reduce signal coupling between low-frequency radiation unit 4 and high-frequency radiation unit 5, an isolation groove 6 is formed between low-frequency radiation unit 4 and high-frequency radiation unit 5 on the upper surface of flexible substrate 1. The isolation groove 6 is coated with a carbon nanotube coating. The carbon nanotube coating has high conductivity, and thus absorbs electromagnetic waves through eddy current loss through the coating characteristics. This structural design, through the isolation groove 6 and the coated carbon nanotube coating, can further reduce the resonance interference between high-frequency and low-frequency bands, effectively improve the signal-to-noise ratio, avoid mutual interference between high and low frequencies, and make it more practical.

[0029] In this embodiment, in order to ground the high-frequency radiation unit 5 and the low-frequency radiation unit 4, please refer to the appendix of the specification for details. Figure 2 as well as Figure 3 As shown, a first metal grounding layer 7 is installed below the low-frequency radiation unit 4 and on the flexible substrate 1, and a second metal grounding layer 8 is provided below the high-frequency radiation unit 5 and on the lower surface of the flexible substrate 1. Conductive holes 9 are provided on both the first metal grounding layer 7 and the second metal grounding layer 8, and the conductive holes 9 penetrate through the metal grounding layer and the flexible substrate 1.

[0030] Furthermore, the conductive hole 9 is filled with conductive pillars 10, which are conductive silver pillars. The conductive pillars 10 on both sides are electrically connected to the low-frequency radiation unit 4 and the high-frequency radiation unit 5, respectively. The vertical short-circuit stub 401 of the low-frequency radiation unit 4 is connected to the first metal grounding layer 7 through the conductive pillars 10, thereby forming a closed loop and improving the radiation efficiency.

[0031] Working principle: Those skilled in the art can use the 5G antenna structure of this utility model through conventional methods. The feed point 403 of its low-frequency radiating unit 4 is used to connect to the motherboard of the mobile phone, thereby ensuring normal power connection and use.

[0032] The low-frequency radiating unit 4 of this utility model includes a vertical short-circuit stub 401, which is connected to two first-stage horizontal radiating arms 402. Several feed points 403 are provided on the vertical short-circuit stub 401, thereby forming a signal radiating antenna unit for the Sub-6GHz low-frequency band.

[0033] The high-frequency radiating element 5 includes a vertical feed stub 501, the tail end of which is connected to a secondary horizontal radiating arm 502, thereby forming a millimeter-wave high-frequency antenna element.

[0034] This invention integrates a high-frequency radiation unit 5 and a low-frequency radiation unit 4 on a single antenna. The inverted F-shaped low-frequency radiation unit 4 and the L-shaped high-frequency radiation unit 5 work together to cover both the Sub-6GHz band and the millimeter-wave high-frequency band. By using the high-frequency radiation unit 5 and the low-frequency radiation unit 4, the multi-band usage requirements of both high and low frequencies can be met without the need for additional antenna structures. This effectively saves internal space in the mobile phone and avoids excessive space occupation by multiple antennas. It achieves simultaneous coverage of the Sub-6GHz band and the millimeter-wave dual-band within the limited internal space of the mobile phone, making it more practical.

[0035] Meanwhile, by using the inverted F-shaped low-frequency radiation unit 4 and the upright L-shaped high-frequency radiation unit 5 together, the current paths of high-frequency radiation are made orthogonal, which can effectively reduce signal coupling.

[0036] Furthermore, this invention incorporates an isolation groove 6 and a coated carbon nanotube layer. The carbon nanotube layer has high conductivity, and through its properties, it can absorb electromagnetic waves through eddy current loss, thereby further reducing resonance interference between high and low frequency bands, effectively improving the signal-to-noise ratio, avoiding mutual interference between high and low frequencies, and enhancing its practicality.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A 5G mobile phone antenna structure, comprising a flexible substrate (1), characterized in that, A low-frequency arm (2) is provided on one side of the flexible substrate (1), and a high-frequency arm (3) is provided on the other side of the flexible substrate (1). A low-frequency radiation unit (4) is provided on the low-frequency arm (2), and a high-frequency radiation unit (5) is provided on the high-frequency arm (3). The low-frequency radiation unit (4) adopts an inverted "F" shaped structure design, and the high-frequency radiation unit (5) adopts an "L" shaped structure design. An isolation groove (6) is provided between the low-frequency radiation unit (4) and the high-frequency radiation unit (5) and located on the upper surface of the flexible substrate (1). A carbon nanotube coating is coated in the isolation groove (6). A first metal grounding layer (7) is installed below the low-frequency radiation unit (4) and located on the flexible substrate (1). A second metal grounding layer (8) is provided below the high-frequency radiation unit (5) and located on the lower surface of the flexible substrate (1).

2. The 5G mobile phone antenna structure according to claim 1, characterized in that: Both the first metal grounding layer (7) and the second metal grounding layer (8) are provided with conductive holes (9), which are disposed through the metal grounding layer and the flexible substrate (1).

3. The 5G mobile phone antenna structure according to claim 2, characterized in that: The conductive hole (9) is filled with a conductive pillar (10), which is a conductive silver pillar. The conductive pillars (10) on both sides are electrically connected to the low-frequency radiation unit (4) and the high-frequency radiation unit (5), respectively.

4. The 5G mobile phone antenna structure according to claim 1, characterized in that: The low-frequency radiation unit (4) includes a vertical short-circuit stub (401), which is connected to two first-level horizontal radiation arms (402). Several feed points (403) are provided on the vertical short-circuit stub (401).

5. A 5G mobile phone antenna structure according to claim 1, characterized in that: The high-frequency radiation unit (5) includes a vertical feed stub (501), the tail end of which is connected to a secondary horizontal radiation arm (502).

6. A 5G mobile phone antenna structure according to claim 1, characterized in that: The flexible substrate (1) is made of polyimide material with a thickness of 0.1-0.3 mm.

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