摘要
为改进原管状带通阻带特性,设计了一种新型结构。基于阻抗匹配,可在端头引入任意多“Г型”网络。同时其衰减极点能有效抑制“谐振峰”状寄生,阻带拓宽多达1倍频程(现为1.27f0~17f0)。改进后,滤波器具有低插损(小于等于0.77dB)、轻量化(小于等于64g)、高寄生抑制(大于等于75dB)等特点。目前,该滤波器已成功小批量应用,提高了整机抗干扰性能。在电磁环境日益复杂的雷达、通信系统中,它将有着广阔的应用前景。
A new structure is designed to improve the characteristics of original tubular filter's stopband.Based on the impedance match,it can be inserted arbitrary number ofГ-type networks at the ports.Meanwhile,its attenuation poles can effectively suppress the spurious of resonance hump.The width of rejection is broadened more than one octave(1.27f0-17f0 now).The improved filters with the characteristics of low insert loss(≤0.77 dB),light weight(≤64 g),high spurious suppression(≥75 dB)are applied in batch at present.The antiinterference ability of machine in which the filter is applied is better.It has a good application prospect for the radar and communication systems in more and more complex electromagnetic environment.
作者
龚文斌
GONG Wen—bin(Chengdu Spaceon Electronic Co.,Ltd.,Chengdu 611731,China)
出处
《电讯技术》
北大核心
2011年第10期99-103,共5页
Telecommunication Engineering
关键词
带通滤波器
寄生抑制
宽阻带
管状滤波器
Г型网络
衰减极点
bandpass filter
spurious suppression
wide stopband
tubular filter
Г-type network
attenuation pole
