CAJ | 학술논문

为提高短波接收机抗邻道干扰性能，设计了一种分波段短波跟踪预选滤波器方案。对构成滤波器的互感耦合双调谐回路进行特性分析，阐述了滤波回路与低噪声放大器组成的抗干扰滤波器的设计与实现。仿真分析和实测结果表明，所设计的抗干扰预选滤波器完全达到了短波接收机抗邻道干扰的指标要求。
위제고단파접수궤항린도간우성능，설계료일충분파단단파근종예선려파기방안。대구성려파기적호감우합쌍조해회로진행특성분석，천술료려파회로여저조성방대기조성적항간우려파기적설계여실현。방진분석화실측결과표명，소설계적항간우예선려파기완전체도료단파접수궤항린도간우적지표요구。
To improve the anti-interference performance of short -wave receiver , a scheme of band -tracking preselected filter in its front-end was proposed .The characteristics of mutual -inductance-coupled dual resonant circuits of the tuning fil-ter were analyzed .And the design and implementation of anti -interference filter which consists of the dual resonant circuits and cascade low noise amplifier were discussed .The simulation and test results prove that designed anti -interference preselected fil-ter is in great agreement with the requirements of anti adjacent channel interference of short -wave receiver .