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Method for realizing test of embedded local-oscillator frequency converter by utilizing vector network analyzer

A vector network analysis and testing method technology, applied in the field of embedded local oscillator frequency converter testing, can solve the problems of complex testing process, slow testing speed, bulky volume, etc., and achieve shortened testing time, simple and convenient operation, and high testing accuracy Effect

Active Publication Date: 2012-09-19
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

[0010] The invention solves the problems of bulky size, high cost, complicated testing process, slow testing speed and poor measurement accuracy brought about by using multiple instruments and equipment to form a testing system at present.

Method used

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  • Method for realizing test of embedded local-oscillator frequency converter by utilizing vector network analyzer
  • Method for realizing test of embedded local-oscillator frequency converter by utilizing vector network analyzer
  • Method for realizing test of embedded local-oscillator frequency converter by utilizing vector network analyzer

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Embodiment Construction

[0024] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0025] The built-in local oscillator frequency converter is a type of frequency conversion device, but the local oscillator source is built into the frequency converter, and the clock / time base of the local oscillator source cannot be synchronized with external devices. When measuring the built-in local oscillator frequency converter, the specific working frequency of the built-in local oscillator of the frequency converter is an unknown quantity, and the actual working frequency of the local oscillator deviates from its nominal frequency. Therefore, how to measure various indicators of such devices is a difficult problem. image 3 Shown is a typical embedded local oscillator schematic diagram. ...

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Abstract

The invention relates to a method for realizing test of an embedded local-oscillator frequency converter by utilizing vector network analyzer, and the method is characterized in that the vector network analyzer is used for performing the rough scanning to determine a general working frequency of a local oscillator and then for performing the precise scanning to determine the frequency difference through a phase and time curve, then a tuning reference passage phase is matched with the embedded local oscillator signal phase, and finally the measurement alignment of the frequency converter is performed. Due to the adoption of the method, the problems of large size, expensive cost, complicated test process, slow test speed and poor measurement precision caused by a test system consisting of multiple instruments and devices can be solved.

Description

technical field [0001] The invention relates to a method for realizing the test of a built-in local oscillator frequency converter by using a vector network analyzer. Background technique [0002] With the development of modern technology, communication systems are becoming more and more complex, especially satellite communication systems. In order to improve the overall performance of communication equipment such as system terminals, it is necessary to accurately measure the vector transmission characteristics of each part of the system, and only measure the traditional amplitude-frequency of the equipment. The transmission characteristics can no longer meet the system design requirements, and the accurate measurement of more vector parameter characteristics is more and more urgent to improve the system performance. Embedded local oscillator frequency converters are widely used in satellite transponders. The performance of these frequency converters, especially the group de...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R23/12
Inventor 曹志英郭永瑞刘丹梁胜利李卓明
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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