A Method for Automatically Adjusting IF Gain of Vector Network Analyzer

A vector network analysis and network analyzer technology, applied in the direction of gain control, electrical components, amplification control, etc., can solve the problems of error-prone, slow manual intermediate frequency gain adjustment, unfavorable production, etc., to save time and cost, adjust The effect of high speed and high adjustment accuracy

Active Publication Date: 2018-12-04
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

[0008] Aiming at the problems that manual intermediate frequency gain adjustment is slow, prone to errors, and unfavorable to production, the present invention proposes an automatic adjustment method for intermediate frequency gain of a vector network analyzer

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  • A Method for Automatically Adjusting IF Gain of Vector Network Analyzer
  • A Method for Automatically Adjusting IF Gain of Vector Network Analyzer

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] In the prior art, a spectrum analyzer is used to adjust the two levels of the intermediate frequency with 4 levels each, and there are 16 possibilities. Manual adjustment is slow and error-prone. If the empirical value is used to adjust the speed slightly, it will make mistakes and easy to rework, and the system dynamic range index may not reach the optimal state.

[0019] The present invention proposes a method for automatically ad...

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Abstract

The invention proposes a method for automatically adjusting the intermediate frequency gain of a vector network analyzer. Directly connected to the input port and output port of the vector network analyzer, so that when the host of the vector network analyzer outputs the maximum power, the AD chip reaches the maximum range, read the gain value of the intermediate frequency and adopt the method of step-by-step experiments from the gain of the middle gear to both sides. The optimal intermediate frequency gain gear; the power meter and the vector network analyzer are connected by a GPIB cable, and the power meter is used to read the maximum value of each frequency band of the vector network analyzer. The invention uses a power meter and a straight-through cable to automatically adjust the intermediate frequency gain of the vector network analyzer. Compared with the existing technology, the adjustment speed is fast and the adjustment accuracy is high, so that each instrument can be adjusted individually; saving The time cost of mass production of instruments optimizes the dynamic range and trace noise indicators of each vector network analyzer system.

Description

Technical field [0001] The invention relates to the technical field of testing, in particular to a method for automatically adjusting the intermediate frequency gain of a vector network analyzer. Background technique [0002] The vector network analyzer is a test instrument for testing the S parameters and related parameters of microwave and millimeter wave devices and systems. It plays a pivotal role in modern integrated circuit R&D and production, radar and other system development, and material testing. It is known as the microwave and millimeter wave field. "The King of Test Instruments". The system dynamic range index is one of the most important indexes of the vector network analyzer. It represents the range that the instrument can measure. The higher the index, the higher the range that can be measured, and the smaller the trace noise tested under the same power level. In order to achieve the best dynamic range, it is necessary to adapt the receiver of the vector network ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G3/20
CPCH03G3/20
Inventor 段飞李树彪曹志英刘丹张庆龙
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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