斜率鉴频器鉴频特性及其仿真研究  

The Characteristic and Simulation Research of Slope Discriminator

作　　者：王翠珍[1] 唐金元[1] 

机构地区：[1]海军航空工程学院青岛校区,山东青岛266041

出　　处：《仪表技术》2016年第4期27-29,共3页Instrumentation Technology

摘　　要：鉴频器电路是无线电接收机中常用的调频信号解调电路。在介绍单回路离谐斜率鉴频器和双回路离谐斜率鉴频器电路工作特点的基础上,分析了利用Multisim 10.0仿真软件对两类斜率鉴频电路进行构建和鉴频波形仿真的方法。仿真结果表明,单回路离谐斜率鉴频器电路简单,但输出信号小、非线性失真较大,双回路离谐斜率鉴频器波形输出信号大、失真较小、通频带较宽,但电路调整较困难,调整时要注意使电路对称。The discriminator is often used as demodulation circuit of frequency modulation signal in receiver. Based on the brief introduction of the characteristics of the discriminator circuit,this paper analyzes the method of building discriminator circuits and simulating waveform by Multisim 10. 0 simulation software. The simulation results show that the single slope discriminator circuit has simpler structure,smaller amplitude of output signal and more apparent nonlinear distortion; while the double slope discriminator has larger amplitude of output signal,wider bandwidth and smaller nonlinear distortion. But it is more difficult for the double slope discriminator to be made symmetry.

关 键 词：斜率鉴频器 仿真 波形变换 单回路 双回路 

分 类 号：TN7[电子电信—电路与系统]