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Radio frequency interface circuit and design method thereof

A technology of radio frequency interface and design method, which is applied in the field of signal transmission, can solve problems such as the echo problem of the radio frequency interface circuit, and achieve the effects of eliminating impedance discontinuity, reducing return loss, and low return loss

Active Publication Date: 2014-10-08
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing method only solves the echo problem of the RF connector itself, but does not solve the echo problem of the RF interface circuit

Method used

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  • Radio frequency interface circuit and design method thereof
  • Radio frequency interface circuit and design method thereof
  • Radio frequency interface circuit and design method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the embodiments and drawings, but the implementation of the present invention is not limited thereto.

[0028] The design method of the radio frequency interface circuit of the embodiment of the present invention is to introduce a matching network into the original radio frequency interface circuit, and the matching network is used to increase the impedance;

[0029] Wherein, the original radio frequency interface circuit may be a radio frequency interface circuit designed in any existing manner, or may be any existing radio frequency interface circuit;

[0030] Introducing a matching network into the original radio frequency interface circuit may include the step of: introducing a distributed parameter element matching network into the original radio frequency interface circuit, or may also include the step of: introducing a group element matching network into the original radio frequency interfac...

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Abstract

The invention provides a radio frequency interface circuit and a design method thereof. The method comprises the steps that a matching network is introduced into an original radio frequency interface circuit, and the matching network is used for increasing impedance. By the adoption of the scheme, redundant capacitance of the original radio frequency interface circuit can be reduced or counteracted, so that inherent impedance discontinuity of the original radio frequency interface circuit is eliminated, and return loss is reduced.

Description

technical field [0001] The invention relates to the technical field of signal transmission, in particular to a design method of a radio frequency interface circuit and the radio frequency interface circuit. Background technique [0002] Radio frequency interface circuits are generally circuits formed by connecting radio frequency connectors (such as joints) with planar transmission lines. The frequency band involved is 30MHz to 300GHz. Radio frequency interface circuits are widely used in mobile communications, radar, medical equipment and other fields. According to the different angles between the RF connector and the axial line of the planar transmission line, the interface circuit can be divided into two types: straight-through type and vertical type RF interface circuit: 1) The axial direction of the RF connector in the straight-through type RF interface circuit and the direction of the planar transmission line are Parallel; 2) The direction of the axis of the vertical r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40
Inventor 查文清杨世朝刘海涛李合理张磊徐毅
Owner COMBA TELECOM SYST CHINA LTD