Compact high-rejection wideband bandpass filter using asymmetrical resonators

Ko Wen Hsu, Wen Hua Tu

研究成果: 書貢獻/報告類型會議論文篇章同行評審

4 引文 斯高帕斯(Scopus)

摘要

In this paper, a compact wideband bandpass filter using asymmetrical resonators is proposed. A lossless transmission-line model calculation is used to determine the resonant responses of the asymmetrical resonator, which consists of a uniform resonator tapped by an open stub. By adjusting the stub length and the tapping position, one can control the resonant frequencies for wideband bandpass filter design purpose. With the two inherent transmission zeros at both sides of passband, a sharp rejection response is achieved to improve the stopband performance. For the proposed wideband bandpass filter, from 2 GHz to 4.8 GHz (90%), the measured return loss is greater than 11 dB, and the measured insertion loss is less than 2 dB. The maximum group delay variation is 0.7 ns. Furthermore, there are two transmission zeros at 1.8 and 5.15 GHz for a sharp cutoff response. The effective area measures only 0.34λg ×0.08λg at center frequency.

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主出版物標題2011 IEEE MTT-S International Microwave Symposium, IMS 2011
DOIs
出版狀態已出版 - 2011
事件2011 IEEE MTT-S International Microwave Symposium, IMS 2011 - Baltimore, MD, United States
持續時間: 5 6月 201110 6月 2011

出版系列

名字IEEE MTT-S International Microwave Symposium Digest
ISSN(列印)0149-645X

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???event.eventtypes.event.conference???2011 IEEE MTT-S International Microwave Symposium, IMS 2011
國家/地區United States
城市Baltimore, MD
期間5/06/1110/06/11

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