Method and system for sampling high-frequency periodic signals

Abstract

The invention discloses a method for sampling high-frequency periodic signals, comprising the following steps: sampling input signals by using sampling signals, and storing data of the sampled input signals; counting frequencies of the input signals and the sampling signals so as to obtain frequency ratio of the input signals to the sampling signals; processing the data of the stored sampled input signals by using the frequency ratio of the input signals to the sampling signals so as to restore the input signals; and outputting the recovered input signals so as to display waveforms. By utilizing the method for sampling the high-frequency periodic signals provided by the invention, the high-frequency periodic signals can be effectively sampled and recovered by using low speed analog / digital, and the method is high in sampling precision and strong in controllability. The invention further discloses a system for sampling high-frequency periodic signals.

Description

A sampling method and system for a high-frequency periodic signal technical field The present invention relates to sampling technology, more specifically to a sampling method and system for high-frequency periodic signals. Background technique The data processing speed of modern electronic information technology is getting faster and faster. For devices such as computers, mobile phones, mobile TVs, GPS navigation, RFID non-stop charging, etc., the communication frequency has reached the order of G. The development and manufacture of these products are inseparable from high-frequency Digital oscilloscopes, they are the eyes of developers. In a digital oscilloscope, an analog-to-digital conversion (A / D) is first performed on the input signal, and the analog signal is converted into a digital signal, and then processed and displayed. The speed of the A / D converter determines the sampling rate of the instrument, and also determines the maximum operating frequency index of th...

AI Technical Summary

Problems solved by technology

The hardware circuits of these methods are complex, difficult to debug, and poor in accuracy. Many instruments use this type of method, which has equivalent functions in name, but cannot measure and recover high-frequency signals.

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