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引用本文：

龚文斌.一种新型宽阻带管状带通滤波器的设计[J].电讯技术，2011，51（10）： - . [点击复制]
GONG Wen-bin.Design of a Novel Wide Stopband Tubular Bandpass Filter[J].，2011，51（10）： - . [点击复制]

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一种新型宽阻带管状带通滤波器的设计
龚文斌
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(成都天奥电子股份有限公司，成都 611731)

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1.27f0～17f0)。改进后，滤波器具有低插损（小于等于0.77 dB）、轻量化（小于等于64 g ）、高寄生抑制（大于等于75 dB）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。

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

DOI：

基金项目:

Design of a Novel Wide Stopband Tubular Bandpass Filter

GONG Wen-bin

()

Abstract:

A new structure is designed to improve the characteristics of origina l tubular filter′s stopband. Based on the impedance match, it can be inserted arbitrary number of Г-type networks at the ports. Meanwhile, its attenuati on poles can effectively suppress the spurious of resonance hump. The width of r ejection is broadened more than one octave （1.27f0～17f0 now）. The imp rove d fil ters with the characteristics of low insert loss（≤0.77 dB）, light weight（≤6 4 g）, high spurious suppression（≥75 dB） are applied in batch at present. T he antiinterference ability of machine in which the filter is applied is better. It has a good application prospe ct for the radar and communication systems in more and more complex electromagne t ic environment.

Key words: bandpass filter spurious suppression wide stopband tubular filter Г-type networ k attenuation pole