Programmable DDS arbitrary waveform signal generator

Abstract

The invention discloses a programmable DDS arbitrary waveform signal generator. The signal generator comprises a signal generator body, and the signal generator comprises a touch display screen, a core controller, a programmable DDS module, a first digital-to-analog conversion module, an oval low-pass filer module, a multiplier amplitude modulation module and a second digital-to-analog conversion module. The touch display screen is connected with the core controller. The core controller is connected with the programmable DDS module. The output end of the programmable DDS module is connected with the input end of the oval low-pass filer module through the first digital-to-analog conversion module, and the output end of the oval low-pass filer module is connected with one input end of the multiplier amplitude modulation module. The output end of the core controller is connected with the other input end of the multiplier amplitude modulation module through the second digital-to-analog conversion module. The output end of the multiplier amplitude modulation module forms the output end of the signal generator body. The signal generator has the advantages that stability and precision are high and higher harmonics are few.

Description

technical field [0001] The invention relates to the technical field of signal generators, in particular to a programmable DDS arbitrary waveform signal generator. Background technique [0002] Explosive tests are often extremely destructive and occur instantaneously. It is difficult to complete certain parameter test measurements once, and repeated tests often lead to increased investment. In order to repeatedly simulate and generate relevant test parameters, it is particularly necessary to design a convenient arbitrary waveform signal generation instrument. [0003] The traditional function signal generator adopts the analog method, and it is difficult to generate the desired arbitrary waveform signal. Usually, the direct digital synthesis waveform based on the address generator can only be a fixed type, and cannot be changed arbitrarily; usually, the synthetic waveform based on the phase accumulator can be "arbitrary", but the premise is that the waveform data must be sto...

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem that existing signal generators are difficult to generate arbitrary test signal waveforms, and a programmable DDS arbitrary waveform signal generator is provided

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