ASK调制解调电路的设计与仿真  

Design and Simulation of ASK Modulation and Demodulation

作　　者：唐玲[1] 

机构地区：[1]西华师范大学物理与电子信息学院,四川南充637009

出　　处：《电子科学技术》2015年第4期486-489,共4页Electronic Science & Technology

摘　　要：在无线通信系统中,调制解调的设计尤为重要。调制解调主要有三种:调频鉴频、调相鉴相、调幅检波。根据模拟相乘的特性,ASK信号利用模拟开关实现调制,然后利用锁相环相干电路得到同频同相的振荡信号,再通过抽样判决器进行解调。电路利用Multisim软件进行设计和仿真,最后给出仿真结果。由仿真结果可得知此方法能够实现信号的精确解调。In a wireless communication system,design of modulation and demodulation is particularly important.There are three main method of modulation and demodulation：Frequency modulation and discriminator,Phase modulation and discriminator,amplitude modulation and detaction.According to the characteristics of analog multiplication,the modulation of ASK signal is using analog switches to realize,the output of PLL is the oscillator signal that is the same frequency and phase.Sample sentence get the demodulation signal.The circuit are designed and simulated based on Multisim,the simulative result is also provided.The simulation results show that precise demodulation can realize by this method.

关 键 词：调制解调 ASK MULTISIM 仿真 

分 类 号：TN915.05[电子电信—通信与信息系统]