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An integrated near-field communication and wireless charging antenna based on a metal back shell

A metal back shell, near field communication technology, applied in the field of antennas, can solve the problems of weakening the practicability of the design scheme, and achieve the effect of reducing the problem of temperature overheating and changing the distribution of eddy currents

Active Publication Date: 2019-03-15
SHENZHEN SUNWAY COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this design has such a large through hole on the metal back shell, which will greatly weaken the practicability of the design.

Method used

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  • An integrated near-field communication and wireless charging antenna based on a metal back shell
  • An integrated near-field communication and wireless charging antenna based on a metal back shell
  • An integrated near-field communication and wireless charging antenna based on a metal back shell

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of the NFC and WPC integrated antenna when the metal back shell of the present invention is provided with double through holes. This embodiment includes a metal back shell 1 of a mobile terminal, and a through hole 2 and a through hole 3 are arranged on the metal back shell 1, wherein the through hole 2 and the through hole 3 are connected by a gap 6, and the metal back shell 1 A gap 7 is formed on the edge, and the gap 7 is connected with the through hole 3 closest to the edge of the metal rear case.

[0039]The shape of the through hole 2 and the through hole 3 can be rectangular, circular, elliptical and other arbitrary shapes, and the outside of the through hole 2 is surrounded by an NFC antenna coil 4, and the outside of the through hole 3 is surrounded by a WPC antenna coil 5 , and here the NFC antenna coil and the WPC antenna coil correspond to the same shape as the through hole.

[0040]...

Embodiment 2

[0052] Such as Figure 7 as shown, Figure 7 It is a schematic diagram of the concentric structure of NFC and WPC when the metal back shell of the present invention is provided with double through holes. In this embodiment, the metal back shell 1 is provided with two through holes (through hole 2 and through hole 3), the WPC antenna coil 5 is arranged around the outside of the through hole 2, and the NFC antenna coil 4 is arranged around the outer side of the WPC antenna coil 5. On the outside, the through hole 2 and the through hole 3 are connected through the gap 6 opened on the metal back shell 1, and a gap 7 is opened on the edge of the metal back shell 1, and the gap 7 is connected with the through hole closest to the edge of the metal back shell. 3 connections.

[0053] In this embodiment, on the basis of the above embodiments, only one through hole 2 is used to make the WPC antenna coil and the NFC antenna coil form a concentric structure. Under this structure, when ...

Embodiment 3

[0056] Such as Figure 8 as shown, Figure 8 It is a schematic diagram of a concentric structure with a protrusion on the outside of the metal back shell on the NFC or WPC in the case of a single through hole in the present invention. In this embodiment, a through hole 3 is provided on the metal back shell 1, the NFC antenna coil 4 is arranged around the outside of the through hole 3, and the WPC antenna coil 5 is arranged around the outside of the NFC antenna coil 4 , and a gap 7 connecting the through hole 3 is opened on the edge of the metal rear case 1 . Wherein the WPC antenna coil 5 is provided with a protrusion 501 exposed to the metal rear case 1 , and the slot 3 is located in the protrusion 501 .

[0057] It should be noted that the positions of the NFC antenna coil 4 located in the inner circle and the WPC antenna coil 5 located in the outer circle can be interchanged. In order to ensure that the antenna system can work normally (that is, the antenna can be detect...

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Abstract

The invention discloses a near-field communication and wireless charging integrated antenna based on a metallic housing. The integrated antenna comprises an NFC antenna coil and a WPC antenna coil installed on the inner sidewall of the metallic housing of a mobile terminal. Two through holes are disposed on the metallic housing. The NFC antenna coil is arranged around the outer side of one through hole. The WPC antenna coil is arranged around the outer side of the other through hole. The two through holes are connected through a first slit disposed on the metallic housing. A second slit is disposed on the edge of the metallic housing and is connected with any one of the through holes. Compared with a conventional NFC and WPC integrated antenna, the near-field communication and wireless charging integrated antenna is provided with the second slit on the metallic housing and connects the through holes on the metallic housing with the edge of the metallic housing by means of the second slit, thereby effectively changing eddy current distribution on the metallic housing and improving the performance of the antenna while eliminating a shielding effect of the metallic housing on the antenna.

Description

Technical field: [0001] The invention relates to the technical field of antennas, in particular to an integrated near-field communication and wireless charging antenna used on mobile terminals such as mobile phones with metal back shells. Background technique: [0002] An antenna is a device that uses frequency characteristics to receive and transmit signals. In recent years, with the development of wireless terminals and communication technologies, near field communication (Near Field Communication, NFC, operating frequency 13.56MHz) and wireless charging technology (for example, Qi standard of Wireless Power Consortium (WPC), operating frequency 100MHz -200MHz), widely used in mobile terminals such as mobile phones. [0003] NFC technology begins with Radio Frequency Identify Detection (RFID) technology, which combines an inductive card reader and an inductive card on a single chip to realize point-to-point data exchange. The NFC chip is installed on mobile terminals suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/24H01Q7/04H04M1/02
Inventor 赵安平徐雨陈浩牛宝星
Owner SHENZHEN SUNWAY COMM
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