Simplified calibration method for multiport vector network analyzer

A technology of vector network analysis and calibration method, which is applied in the field of simplified calibration of multi-port vector network analyzers, and can solve problems such as long calibration period, multi-port calibration troubles, and cumbersome connections.

Active Publication Date: 2014-02-26
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Abstract
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Problems solved by technology

With the rise and wide application of multi-port, multi-functional components and modules, the cumbersome connection and long calibration cycle of traditional full N-port calibration have caused great troubles to multi-port calibration

Method used

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  • Simplified calibration method for multiport vector network analyzer
  • Simplified calibration method for multiport vector network analyzer
  • Simplified calibration method for multiport vector network analyzer

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Experimental program
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Embodiment 1

[0056] Such as figure 1 Among them is the multi-port vector network analyzer error model in the prior art, wherein the system error between any ports is equivalent to N two-ports embedded between the ideal N-port network analyzer 101 and the N-port DUT 102 For the network E103, 104, 105..., the corresponding input signal is denoted by a, and the output signal is denoted by b, where the subscripts of a, b, and E, the first two digits represent the receiving end, and the last two digits represent the input end. represents the E of the one-port reflection error model 107 D ,E S ,E R represent directivity, source matching and reflection tracking error respectively, the subscript i is the input port, which is also the reflection port; represents the E of the transmission error model 108 between ports T ,E L ,E X Stand for transmission tracking, load matching and isolation error respectively, the subscript i is the output port, and j is the input port. Such as figure 2 is th...

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Abstract

The invention provides a simplified calibration method for a multiport vector network analyzer. The method comprises steps that: step One, an error model between any two ports is set, any one of the ports is selected to be a first port, directivity, source coupling and a reflective tracking error of the first port are acquired; step Two, a straight member or an adapter is utilized to connect with the first port and a second port of the vector network analyzer for straight measurement to acquire positive / reverse load coupling and positive / reverse transmission tracking errors correlated with the port and the first port; and step Three, through two times of measurement, directivity, source coupling and a reflective tracking error of the second port are acquired. Through the method, reflective connection can be reduced by 50% through double-port calibration, reflective connection can be reduced by 75% through four-port calibration, and reflective connection can be reduced by 93.75% through sixteen-port calibration, and thereby introduction of technology into multiport calibration can realize more obvious effects and stronger simplification effect in real application.

Description

technical field [0001] The invention belongs to the technical field of calibration of vector network analyzers, and in particular relates to a simplified calibration method for multi-port vector network analyzers. Background technique [0002] In recent years, in order to improve the performance index of equipment, various multi-port and multi-functional components and modules have appeared one after another, such as power combining network, T / R unit integrated with multiple T / R components, various feeder networks, etc., and have system The significant feature of large demand for integration, from microwave components, components, complete equipment to weapon system development, production, installation and commissioning, maintenance and repair, requires accurate and rapid testing and analysis of multi-port network S parameters . Therefore, the vector network analyzer is required to have the measurement function of multi-port devices. Before using the vector network analyz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 郭永瑞李树彪刘丹赵立军李明太庄志远
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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