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Antenna matching circuit

An antenna matching and matching technology, which is applied in the field of wireless communication, can solve the problems of high design difficulty, single signal transmission path, and inability to flexibly adjust antenna matching circuits, etc., so as to increase the number of signal transmission paths, improve utilization rate, increase selectivity and The effect of compatibility

Inactive Publication Date: 2020-09-29
WUXI RUIQIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As can be seen from the above figure, the structure of the antenna matching circuit of the existing smart terminal is fixed, and the signal transmission path is single
However, in order to meet the requirements of network standards and frequency bands, it is necessary to use a set of antenna matching circuits to match all frequency bands in the wireless mobile communication network within the limited internal space of the smart terminal. Make flexible adjustments to meet the requirements of different use environments

Method used

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Examples

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Comparison scheme
Effect test

no. 1 example

[0026] see Figure 4 As shown, the antenna device of this embodiment includes an antenna (not shown in the figure) and an antenna matching circuit 100, wherein the antenna matching circuit 100 includes a radio frequency port 10, a shrapnel assembly 20, a first matching branch 30 and a compatible test node 40 , the shrapnel assembly 20 includes a signal shrapnel 21, the signal shrapnel 21 is connected to the antenna, the radio frequency port 10 is connected to the signal shrapnel 21 to form a first matching main circuit 50, one end of the first matching branch 30 is connected to the first matching main road 50, and the other end is grounded The compatible test node 40 is disposed at the connection between the first matching branch 30 and the first matching main circuit 50 , and a signal transmission path is formed between the signal shrapnel 21 and the compatible test node 40 .

[0027] Specifically, the first matching main circuit 50 includes a first capacitor C1, the first ca...

no. 2 example

[0030] see Figure 5 As shown, the antenna device of this embodiment includes an antenna (not shown in the figure) and an antenna matching circuit 200, wherein the antenna matching circuit 200 includes a radio frequency port 10, a shrapnel assembly 20, a first matching branch 30a, a first matching branch Road 30b, compatible test node 40a, compatible test node 40b, compatible test node 40c, second matching branch 60, shrapnel assembly 20 includes signal shrapnel 21 and ground shrapnel 22, and signal shrapnel 21 and ground shrapnel 22 are connected to the antenna together. The RF port 10 is connected to the signal shrapnel 21 to form a first matching main circuit 50, one end of the first matching branch 30a is connected to the first matching main circuit 50, and the other end is grounded; one end of the first matching branch 30b is connected to the first matching main circuit 50, and the other end is grounded. The compatibility test node 40a is arranged at the connection betwe...

no. 3 example

[0036] see Figure 6 As shown, the antenna device of this embodiment includes an antenna (not shown in the figure) and an antenna matching circuit 300, wherein the antenna matching circuit 300 includes a radio frequency port 10, a shrapnel assembly 20, a first matching branch 30a, a first matching branch Road 30b, compatible test node 40a, compatible test node 40b, compatible test node 40c and matching shunt 80, shrapnel assembly 20 includes signal shrapnel 21, ground shrapnel 22a and ground shrapnel 22b, signal shrapnel 21, ground shrapnel 22a and ground shrapnel 22b common antenna. The RF port 10 is connected to the signal shrapnel 21 to form a first matching main circuit 50, one end of the first matching branch 30a is connected to the first matching main circuit 50, and the other end is grounded; one end of the first matching branch 30b is connected to the first matching main circuit 50, and the other end is grounded. The compatibility test node 40a is arranged at the con...

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PUM

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Abstract

The invention discloses an antenna matching circuit. The antenna matching circuit comprises a radio frequency port, an elastic sheet assembly, at least one first matching branch circuit and at least one compatibility test node, wherein the elastic sheet assembly comprises a signal elastic sheet, the radio frequency port is connected with the signal elastic sheet to form a first matching main circuit, one end of the first matching branch circuit is connected with the first matching main circuit , the other end is grounded, the compatibility test node is arranged at the joint of the first matching branch circuit and the first matching main circuit, a signal transmission path is formed between the signal elastic sheet and any compatibility test node, and the compatibility test node is used for an external device to test a signal of the signal transmission path. The antenna matching circuit is simple in circuit and small in occupied space, matching network branches can be flexibly added onthe same antenna matching circuit, and the antenna matching circuit is compatible with a plurality of signal transmission paths, the invention further discloses an antenna device with the antenna matching circuit.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an antenna matching circuit. Background technique [0002] With the development of wireless network technology, smart terminals represented by mobile phones need to support more and more network standards and frequency bands, from the early need to support 2-3 frequency bands to now need to support 7-mode 18-frequency, compared with the early network standards and frequency band requirements, the network standards and frequency bands that existing smart terminals need to support have been greatly improved. And as 5G is about to be commercialized on a large scale and to meet the product needs of different operators in the global market, future smart terminals need to support more frequency bands to adapt to different usage environment requirements. [0003] Figure 1-Figure 3 The circuit diagrams are respectively shown when the commonly used antenna matching circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/50
CPCH01Q5/50
Inventor 杨昊
Owner WUXI RUIQIN TECH CO LTD
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