Electronic Filters

Electronic filters are used very widely , but the design methods are very complicated and difficult to grasp .

电子滤波器应用十分广泛，但设计方法却十分繁杂且不易掌握。

Electronic filters can remove harmonics .

电子滤波器可以消除谐波。

The present status for HVDC converter station is presented , and its future development trends are discussed in several aspects such as power electronic components , active filters , optical direct current transducer , control and protection system , mode of connection , etc.

在介绍高压直流换流站技术现状基础上，从电力电子器件、有源滤波器、光电流传感器、控制和保护系统、接线方式等几方面，探讨换流站技术的发展趋势。

With the huge development of mobile communication , electronic countermeasure and navigation technology , variety of electronic systems for microwave filters has placed enormous demands and new changes .

伴随着近年来移动通信、电子对抗和导航技术的巨大发展，各种电子系统对于微波滤波器提出了很高要求和新的变化。