自均衡类椭圆函数滤波器

SELF-EQUALIZED PSEUDOELLIPTIC FILTER

文章介绍了通信卫星转发器中使用的自均衡类椭圆函数滤波器的设计方法,这种滤波器采用了四腔双模列式结构,实现了一个虚轴和一个实轴传输零点对的传输特性。因此,它在带外衰减与带内幅度特性和带内群时延特性之间有了一个较好的折中。对实验室模型滤波器进行了电性能的测试,其结果表明已经达到了预期的设计目的。

A general design procedure is presented for self--equalized pseudoelliptic filter used for communication satellite in a 8--pole asymmetric dual mode in-line configuration the filter realized useful transmission characteristics with a transmission zero pair at real and imaginary axes. Therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband. The measured performaces of laboratory model filter are given indicating that the expected design object is achieved.