Nonlinear effect modeling method for radio frequency coaxial connector

A nonlinear effect, radio frequency coaxial technology, applied in the intersection of electrical contact and communication technology, can solve the problems of inaccurate measurement results and large errors of third-order intermodulation products, and achieve the effect of improving theoretical support

Active Publication Date: 2018-11-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

The third-order intermodulation product test conducted by using traditional discrete instruments to build a test network has a large error, and the nonlinearity of the instrument itself and the nonlinearity caused by the interconnection between the instruments make the measurement results inaccurate

Method used

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  • Nonlinear effect modeling method for radio frequency coaxial connector
  • Nonlinear effect modeling method for radio frequency coaxial connector
  • Nonlinear effect modeling method for radio frequency coaxial connector

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings. The following description of the case takes the nonlinear effect analysis of the RF coaxial N and SMA adapters as an example, but this embodiment is not intended to limit the present invention, all RF coaxial connectors that adopt the similar structure and similar changes of the present invention As the analysis object, the analysis method of the present invention can be used to carry out the nonlinear analysis of the radio frequency coaxial connector.

[0041] Such as figure 1 As shown, the analysis method in the present invention mainly includes qualitative analysis of materials and structures, quantitative analysis of low-frequency nonlinear measurement and high-frequency nonlinear intermodulation measurement quantitative analysis, and finally uses the method of combining theoretical analysis and experimental measurement to establish A nonlinear model of co...

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Abstract

The invention discloses a nonlinear effect modeling method for a radio frequency coaxial connector. The method comprises: a structure and material characteristics of a connector are determined by electron microscope scanning and an energy spectrum analysis method, so that a qualitative analysis of a nonlinear effect is realized; voltage-current curve testing is carried out by using a microhm microvoltmeter to realize a quantitative test analysis of a nonlinear effect under the direct current of the connector; with a passive intermodulation tester, a third-order intermodulation power is testedso as to realize a quantitative test analysis of the nonlinear effect under the high frequency of the connector; and on the basis of a tunnel effect, a skin effect, and a high-frequency electrical contact theory, a nonlinear contact resistor model, a high-frequency equivalent circuit model and a nonlinear transfer function are established to realize the theoretical analysis of the nonlinear effectof the connector. According to the invention, on the basis of combination of experimental testing and theoretical modeling, the nonlinear effect of the connector is analyzed comprehensively from thequalitative and quantitative perspectives. The method is suitable for the nonlinear effect analyses of coaxial connectors in all communication systems.

Description

technical field [0001] The invention relates to a nonlinear effect modeling method of a radio frequency coaxial connector. Based on comprehensive analysis methods such as theoretical modeling and experimental measurement, the nonlinear model of the contact resistance of the connector under the condition of DC input and high frequency and the high frequency interaction are established. The invention discloses a test method for tuned products, which belongs to the intersecting field of electrical contact and communication technology. Background technique [0002] Passive components in RF communication systems mainly include waveguide joints, isolators, duplexers, connectors, coaxial cables, etc. The RF coaxial connector is the weakest link in the entire system with the largest amount and the most types, but the most prone to failure. [0003] The RF coaxial connector consists of an inner conductor (contact), an insulator (base) and an outer conductor (shell). Among them, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G06F17/50
CPCG01R31/00G06F30/367
Inventor 李晓明金秋延石国超姜海玲纪锐王紫任李庆娅谢刚高锦春
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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