董轲强,杨其华,张珂.低噪声键控宽频信号源设计与实现[J].电测与仪表,2016,53(8):. dongkeqiang,yangqihua,zhangke.Design and Realization of low noise keying broadband Signal Generator[J].Electrical Measurement & Instrumentation,2016,53(8):.
低噪声键控宽频信号源设计与实现
Design and Realization of low noise keying broadband Signal Generator
A kind of keying broadband signal source based on the direct digital frequency synthesis (DDS) chip is designed. It can output sine wave from 0 to 100 MHZ, the amplitude adjustable range is from 1mV to 50V, harmonic distortion is less than 4%. The paper introduces the architecture of the keying broadband signal source system, the design of low pass filter and impedance matching. Various technical indexes, such as output frequency, output amplitude, harmonic, is achieved by actual test.
