This paper presents a filter protecting the radio astronomicalfrequency band, which is a novel coaxial band-rejection filter 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。
2
I/Q imbalance problem causes finite rejection in the image frequency band, and the image interference will alias into the desired signal, severe distortion will occur.
不平衡问题将会造成接收机的镜像干扰排斥能力大幅降低，镜像干扰将使得欲接收的信号严重失真。
3
Adaptive filtering algorithms can be used on time domain to rejection Narrow-band interference (NBI) of man-made of enemy in DSSS.