一种新型ASK调制系统的设计与实现

Design and Realization of a Novel ASK Modulated System

提出了一种用于近距离无线接收数据通信的新型ASK发射及解调电路的设计,详细分析了新型幅移键控(ASK)发射电路和新型ASK解调电路的工作原理,并给出了具体的设计电路。该新型ASK发射电路采用数字调制信号直接控制集电极调幅发射电路的供电电源,方便地实现ASK调制,且电路结构简单,易于实施,输出波形好(该设计已申请发明专利并已受理)。新型ASK解调电路采用边沿检测技术,提高了解调的灵敏度,扩大了输入动态范围。该系统在实际应用中取得了很好的效果。

this article proposes a novel circuit design of ASK transmitter and demodulation for short-range radio receive-data transmission,analyzes in detail the operation principle of this novel ASK emitting circuit and ASK modulation and demodulation circuit,and gives the specific design circuit.This novel ASK emitting circuit uses the digital modulation signal and directly controls the supply power of collector amplitude emitting circuit,thus easily realizing the ASK modulation,and the circuit structure is simple and easy for implementation,and the output waveform is good（The application for invention patent of this design has been accepted）.The novel ASK Demodulation circuit adopts the edge detection technology,and thus improving the demodulation sensitivity and expanding the input dynamic range.This system achieves a good effect in actual application.