In addition, the stop-bandrejection can be further increased by using elliptic filter function which has limited frequency transmission zeros.
另外，在函数类型上使用椭圆函数型，使带外出现有限频率传输零点，进一步提高了带外抑制能力。
2
This paper presents a filter protecting the radio astronomicalfrequency band, which is a novel coaxial band-rejectionfilter in structure.
本文介绍了射电天文波段保护滤波器，它是一种结构新颖的同轴带阻滤波器。
3
The invention relates to an antenna comprising at least one radiating device (100) which is provided with a rejectionfilter associated with the frequency band of an interfering signal.