Dual-band bandpass filter designed by exploiting the second-order degenerated modes of the SIW-cavity

P. Choubey, W. Hong
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引用次数: 1

Abstract

This paper presents a novel technique to design a dual-band bandpass filter by exploiting the second order degenerated modes of the SIW-cavity. The second order filter has been designed by using the proposed technique, at Ka-band of microwave frequencies; the ratio of two bands center frequencies - frequency ratio (FR) - is 1.073. Rogers RT/Duroid 5880 - with substrate height of 0.508mm - has been used as the substrate material for design purpose. The measured return loss of the filter in both bands is better than -15 dB, moreover, the isolation between two bands is also better than 40 dB.
利用siw腔的二阶简并模式设计了双带带通滤波器
本文提出了一种利用siw腔的二阶简并模来设计双带带通滤波器的新方法。利用该技术设计了微波频率ka波段的二阶滤波器;两波段中心频率之比——频率比(FR)为1.073。衬底高度为0.508mm的Rogers RT/Duroid 5880作为衬底材料进行设计。该滤波器在两个频带的回波损耗均优于-15 dB,两个频带之间的隔离也优于40 dB。
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