中频群时延均衡器的研究与设计  

Study and Design of IF Group Delay Equalizer

作　　者：王芹英 田立卿 

机构地区：[1]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2005年第B11期44-47,共4页Journal of Telemetry,Tracking and Command

摘　　要：针对70MHz±18MHz中频滤波器的群时延特性的严格要求，介绍70MHz滤波器的设计原则，用不对称抛物线的设计方法来实现群时延均衡器，然后用Ansoft Designer软件对电路进行了仿真和优化，达到设计指标要求。该设计方法简单，电路易实现，实验测试结果证实了其可行性一。According to the rigid requests of group delay character, the IF fiher design is of importance. Firstly, the design method of 70MHz±18MHz fiber is introduced, that is, non -symmetrical parabola method is adopted to realize group delay equalizer; secondly,the circuit is simulated and optimized by Ansoft Designer, until all requests are satisfied. Finally, it is verified that this method is not only simple but also access to realize by the test results.

关 键 词：群时延均衡器 全通网络 时延均衡能力 

分 类 号：TN958[电子电信—信号与信息处理] U285.49[电子电信—信息与通信工程]