超短波接收机预选滤波器的设计与实现  

Design and Implementation of a Preselected Filter for VHF Receivers

作　　者：黎琴 常雨芳[2] 梅冬 李斌 方勇[3] 唐静[3] 

机构地区：[1]常州国光数据通信有限公司,江苏常州213000 [2]湖北工业大学电气与电子工程学院,湖北武汉430068 [3]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《湖北工业大学学报》2014年第2期44-47,81,共5页Journal of Hubei University of Technology

基　　金：国家自然科学基金面上合作项目(11274352)

摘　　要：提出了在超短波接收机前端设置电调谐跟踪预选滤波器的方案,以提高其抗邻道干扰性能,并对构成调谐滤波的电感耦合双调谐回路进行了特性分析。重点阐述了该回路与低噪放级联组成的抗干扰滤波电路的设计和实现方法。通过仿真分析和实测结果证明所设计的抗干扰预选滤波器完全达到了超短波接收机抗邻道干扰的指标要求。To improve the anti-interference performance of VHF receivers,this paper proposes a scheme of tuning tracking preselected filter in its front-end,and analyzes the characteristics of inductor-coupled dual resonant circuits which constitutes the tuning filter.And then it focuses on the design and implementation of anti-interference filter circuit which consists of the dual resonant circuits and cascade low noise amplifier.Finally,the simulation and test results prove that designed anti-interference preselected filter are in great agreement with the requirements of anti-adjacent channel interference of VHF receivers.

关 键 词：预选滤波器 双调谐回路 低噪声放大 抗邻道干扰 

分 类 号：TN924[电子电信—通信与信息系统]