A Synchronization Method for Intra-Pulse Data Acquisition of Pulse Network Analyzer

Abstract

The present invention proposes a synchronization method for intra-pulse data acquisition of a pulse network analyzer. Data pre-acquisition is performed before the test, and the arrival time of the pulse is calculated, compared with the pulse synchronization signal to obtain a deviation value, and then the data acquisition delay is corrected. . The method of the present invention can automatically judge the arrival time of the pulse, and automatically correct the data collection time; in the pulse synchronization test, the measurement position within the pulse can be accurately set, and the required data can be accurately obtained; the data processing method is simple, and the calculation amount is comparative Small, it will not have a significant impact on the test speed; the use of narrow-band filtering can eliminate noise interference, and it can still detect accurately when the signal is small, with high sensitivity.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a synchronization method for intra-pulse data acquisition of a pulse network analyzer. Background technique [0002] The pulse network analyzer is an instrument that obtains the characteristic parameters of the device under test by generating a pulse excitation signal, exciting the device under test and receiving its scattered signal. Its main structure is as follows: figure 1 shown. [0003] The pulse network analyzer generates a radio frequency continuous wave signal through a radio frequency signal source, and at the same time, a pulse generator generates a pulse signal with a certain frequency and duty cycle. The pulse signal modulates the radio frequency continuous wave into a pulse modulation signal through the modulator, and the pulse modulation signal is injected into the device under test to scatter, and the scattered signal is received by the network analyzer, and beco...

AI Technical Summary

Problems solved by technology

[0006] (1) It is necessary to manually set the delay of the data collection point relative to the synchronization signal

Since the exact electrical length of the signal channel cannot be known, there is no accurate basis for estimation, and it is often necessary to repeatedly try to find a suitable data collection point, so it is difficult to improve the test efficiency

[0007] (2) The exact position of the data collection point in the pulse signal cannot be obtained. If the data is collected at the moment of pulse instability or outside the pulse, large noise will be introduced, making the test result inaccurate

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