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Portable Signal Generator Based on Direct Digital Synthesis

Qing Song

Open publisher page 1 citations

Abstract

According to direct digital synthesis(DDS),a portable signal generator was designed based on the DDS chip-AD9833,which could output sinusoidal wave and square wave.The portable signal generator consisted of power supply module,MCU control module,DDS signal generate module,amplitude modulation module,square wave generate module and output module.The system structure,the design of software and hardware are analyzed in detail.Experiments show that the portable signal generator has some advantages,such as little frequency error,high resolution, low cost,small volume.

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What this paper is about

According to direct digital synthesis(DDS),a portable signal generator was designed based on the DDS chip-AD9833,which could output sinusoidal wave and square wave.The portable signal generator consisted of power supply module,MCU control module,DDS signal generate module,amplitude modulation module,square wave generate module and output module.The system structure,the design of software and hardware are analyzed in detail.Experiments show that the portable signal generator has some advantages,such as little frequency error,high resolution, low cost,small volume.

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Available abstract

According to direct digital synthesis(DDS),a portable signal generator was designed based on the DDS chip-AD9833,which could output sinusoidal wave and square wave.The portable signal generator consisted of power supply module,MCU control module,DDS signal generate module,amplitude modulation module,square wave generate module and output module.The system structure,the design of software and hardware are analyzed in detail.Experiments show that the portable signal generator has some advantages,such as little frequency error,high resolution, low cost,small volume.

Key concepts: Signal generator, Microcontroller, Direct digital synthesizer, SIGNAL (programming language), Generator (circuit theory), Square wave, Digital signal, Electronic engineering

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