CN-224232934-U - 5G mobile phone antenna structure

Abstract

The utility model discloses a 5G mobile phone antenna structure, which comprises a flexible substrate, wherein 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 radiating unit, the high-frequency arm is provided with a high-frequency radiating unit, the low-frequency radiating unit adopts an inverted F-shaped structural design, the high-frequency radiating unit adopts an L-shaped structural design, an isolation groove is arranged between the low-frequency radiating unit and the high-frequency radiating unit and positioned on the upper surface of the flexible substrate, a first metal grounding layer is arranged below the low-frequency radiating unit and positioned on the flexible substrate, and a second metal grounding layer is arranged below the high-frequency radiating unit and positioned on the lower surface of the flexible substrate.

Inventors

• GAO RONG

Assignees

• 东莞市航讯电子科技有限公司

Dates

Publication Date

20260512

Application Date

20250422

Claims (6)

1. 1. The utility model provides a 5G cell-phone antenna structure, includes flexible substrate (1), its characterized in that, flexible substrate (1) one side is provided with low frequency arm (2), the opposite side of flexible substrate (1) is provided with high frequency arm (3), be provided with low frequency radiating element (4) on low frequency arm (2), be provided with high frequency radiating element (5) on high frequency arm (3), low frequency radiating element (4) adopt the structural design of falling "F", high frequency radiating element (5) adopt "L" structural design, isolation groove (6) have been seted up to between low frequency radiating element (4) and high frequency radiating element (5) and be located flexible substrate (1) upper surface, the coating has carbon nanotube coating in isolation groove (6), the below of low frequency radiating element (4) just is located flexible substrate (1) and installs first metal ground layer (7), the below of high frequency radiating element (5) just is located flexible substrate (1) lower surface and is provided with second metal ground layer (8).
2. 2. The 5G mobile phone antenna structure according to claim 1, wherein the first metal grounding layer (7) and the second metal grounding layer (8) are provided with conductive holes (9), and the conductive holes (9) penetrate through the metal grounding layer and the flexible substrate (1).
3. 3. The 5G mobile phone antenna structure according to claim 2, wherein the conductive holes (9) are filled with conductive columns (10), the conductive columns (10) are conductive silver columns, and the conductive columns (10) on two sides are respectively electrically connected with the low-frequency radiating unit (4) and the high-frequency radiating unit (5).
4. 4. The 5G mobile phone antenna structure according to claim 1, wherein the low-frequency radiating element (4) comprises a vertical short circuit branch (401), the vertical short circuit branch (401) is connected with two primary horizontal radiating arms (402), and a plurality of feeding points (403) are arranged on the vertical short circuit branch (401).
5. 5. The 5G mobile phone antenna structure according to claim 1, wherein the high-frequency radiating element (5) comprises a vertical feed branch (501), and a secondary horizontal radiating arm (502) is connected to the tail end of the vertical feed branch (501).
6. 6. The 5G mobile phone antenna structure according to claim 1, wherein the flexible substrate (1) is made of polyimide material, and the thickness is 0.1-0.3mm.

Description

5G mobile phone antenna structure Technical Field The utility model relates to the technical field of mobile phone antennas, in particular to a 5G mobile phone antenna structure. Background The antenna is a transducer which converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium or vice versa, a component for transmitting or receiving the electromagnetic wave in a radio device, a radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomical engineering system, etc., and works by means of the antenna whenever information is transmitted by using the electromagnetic wave, and in addition, the antenna is required for non-signal energy radiation in terms of transmitting energy by using the electromagnetic wave; In the prior art, the 5G mobile phone antenna is widely applied, but the adaptability of the traditional 5G mobile phone antenna structure to multiple frequency bands is poor, a plurality of independent antennas are added to meet the use requirements of high and low frequency bands, the space occupation rate inside the mobile phone can be increased by adding the mobile phone antenna, the layout and the assembly are inconvenient, and the practicability is poor. Disclosure of utility model The utility model aims to provide a 5G mobile phone antenna structure to solve the problems in the background technology. In order to achieve the purpose, the 5G mobile phone antenna structure comprises a flexible substrate, wherein 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 radiating unit, the high-frequency arm is provided with a high-frequency radiating unit, the low-frequency radiating unit adopts an inverted F-shaped structural design, the high-frequency radiating unit adopts an L-shaped structural design, an isolation groove is formed between the low-frequency radiating unit and the high-frequency radiating unit and is positioned on the upper surface of the flexible substrate, a carbon nano tube coating is coated in the isolation groove, a first metal grounding layer is arranged below the low-frequency radiating unit and positioned on the flexible substrate, and a second metal grounding layer is arranged below the high-frequency radiating unit and positioned on the lower surface of the flexible substrate. Preferably, the first metal grounding layer and the second metal grounding layer are respectively provided with a conductive hole, and the conductive holes penetrate through the metal grounding layer and the flexible substrate. Preferably, the conductive holes are filled with conductive columns, the conductive columns are conductive silver columns, and the conductive columns on two sides are respectively and electrically connected with the low-frequency radiation unit and the high-frequency radiation unit. Preferably, the low-frequency radiating unit comprises a vertical short circuit branch, the vertical short circuit branch is connected with two primary horizontal radiating arms, and a plurality of feed points are arranged on the vertical short circuit branch. Preferably, the high-frequency radiating unit comprises a vertical feed branch, and the tail end of the vertical feed branch is connected with a secondary horizontal radiating arm. Preferably, the flexible substrate is made of polyimide material, and the thickness of the flexible substrate is 0.1-0.3mm. Compared with the prior art, the utility model has the beneficial effects that: According to the utility model, the high-frequency radiating unit and the low-frequency radiating unit are integrated on one antenna at the same time, the inverted-F-shaped low-frequency radiating unit and the positive-L-shaped high-frequency radiating unit cooperatively cover the Sub-6GHz frequency band and the millimeter wave high-frequency band, so that the use requirements of high and low frequency multiple frequency bands can be met through the arranged frequency radiating unit and the low-frequency radiating unit, an antenna structure is not required to be additionally arranged, the internal space of a mobile phone can be effectively saved, excessive occupation of the internal space of the mobile phone by a plurality of antennas is avoided, synchronous coverage work of the Sub-GHz frequency band and the millimeter wave double frequency band is realized in the limited internal space of the mobile phone, and the practicability is higher; Meanwhile, through the matching use between the inverted F-shaped low-frequency radiation unit and the positive L-shaped high-frequency radiation unit, the current paths of the high-frequency radiation are orthogonal, so that signal coupling can be effectively reduced; The flexible substrate material has certain flexibility, so that the antenna of the