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Design of Multi-function High-precision Signal Generator Based on DDS

Lin Chongfen

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Abstract

The signal generator is an indispensable tool in the modern electronic measuring,and widely used in the field of communication,measurement and radar control.This paper puts forward a signal generator design method based on DDS technology.The design sets signal parameters by PC and processes the frequency control word by MCU,and then produces sine,square,FSK,ASK and other modulation waveforms.The output frequency is up to 150 MHz and the frequency resolution is 1 μHz.Experimental results show that the design has the advantages of fullfunction,high-precision and excellent programming capability.

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What this paper is about

The signal generator is an indispensable tool in the modern electronic measuring,and widely used in the field of communication,measurement and radar control.This paper puts forward a signal generator design method based on DDS technology.The design sets signal parameters by PC and processes the frequency control word by MCU,and then produces sine,square,FSK,ASK and other modulation waveforms.The output frequency is up to 150 MHz and the frequency resolution is 1 μHz.Experimental results show that the design has the advantages of fullfunction,high-precision and excellent programming capability.

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Available abstract

The signal generator is an indispensable tool in the modern electronic measuring,and widely used in the field of communication,measurement and radar control.This paper puts forward a signal generator design method based on DDS technology.The design sets signal parameters by PC and processes the frequency control word by MCU,and then produces sine,square,FSK,ASK and other modulation waveforms.The output frequency is up to 150 MHz and the frequency resolution is 1 μHz.Experimental results show that the design has the advantages of fullfunction,high-precision and excellent programming capability.

Key concepts: Function generator, Signal generator, Direct digital synthesizer, SIGNAL (programming language), Arbitrary waveform generator, Computer science, Radar, Frequency-shift keying

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