基于开关鉴相的同步检波电路的设计与仿真分析  

Design and Simulation Analysis of Synchronous Detection Circuit Based on on-off Phase Discrimination

作　　者：王佳蓓 周浩[1] 谭思炜[1] WANG Jiabei;ZHOU Hao;TAN Siwei(Naval University of Engineering, Wuhan 430033, China)

机构地区：[1]海军工程大学,武汉430033

出　　处：《兵器装备工程学报》2021年第3期181-185,共5页Journal of Ordnance Equipment Engineering

摘　　要：接收机对调制信号进行同步检波是识别原目标信号频率和相位参数的重要手段;为提高信号识别精度,建立了一种开关鉴相型同步检波电路,通过原理分析以及在Multisim环境中进行仿真研究,得到了不同相差、频差条件下的检波输出信号;仿真结果表明:该电路能精确的解调已调制信号,且鉴频、鉴相精度良好。Synchronous detection of the received modulated signal is an important means to identify the frequency and phase parameters of the original target signal.In order to improve the recognition accuracy of signal,an on-off Phase Discrimination Circuit was established.Through the principle analysis and simulation study in Multisim environment,the detection output signals with different phase and frequency differences were obtained.The simulation results show that the circuit can accurately demodulate the modulated signal,and has high precision of frequency and phase discrimination.

关 键 词：同步检波 鉴频 开关鉴相 信号识别 

分 类 号：TG806[金属学及工艺—公差测量技术] TP212.1[自动化与计算机技术—检测技术与自动化装置]