Automatic test system for millimeter wave receiver

Abstract

The invention provides an automatic test system for a millimeter wave receiver. The system realizes automatic test for a noise coefficient, an amplitude-frequency characteristic, a multi-channel phase consistency index of the millimeter wave receiver in a mode of frequency scanning. The system comprises a noise coefficient test sub-system, an amplitude-frequency characteristic test sub-system anda phase consistency test sub-system. Each of the three sub-systems comprises a main control computer for automatic control, and a GPIB data card. The amplitude-frequency characteristic test sub-system and the phase consistency test sub-system also comprise a millimeter wave frequency multiplication module for performing frequency multiplication on signals to an operating frequency of a test device. The automatic test system can completely realize the automatic test for the radio frequency index of the millimeter wave receiver by utilizing the conventional test device, solves the problem that the conventional millimeter wave test method and test device in China are absent, and overcomes the defects that a manual test wastes much time and energy, data points are less and the accuracy is low.

Description

technical field [0001] The present invention relates to a test system for the millimeter wave band, in particular, the present invention relates to an automatic test system for a millimeter wave receiver. Background technique [0002] In recent years, millimeter-wave receivers have been more and more widely used in the fields of communication, remote sensing, and radar. Millimeter-wave receivers usually need to test their noise figure, amplitude-frequency characteristics, and phase consistency between channels. for analysis. [0003] At present, domestic millimeter-wave automatic test methods are relatively lacking. On the one hand, millimeter-wave test instruments are quite expensive, and the purchase cost is high for users, and some millimeter-wave frequency bands lack ready-made test instruments; on the other hand, the current millimeter-wave test is usually Manual test, for each test item, connect the corresponding instrument and the device under test, test through the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the need to manually input the frequency points to be measured through the control interface when measuring multiple millimeter wave receivers, which is time-consuming and laborious, resulting in fewer measurement frequency points and affecting measurement accuracy; at the same time, it overcomes some millimeter wave frequency band measurement equipment. lack of other problems, thus providing an automatic test system for millimeter wave receivers

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