Millimeter-wave bandstop filter with absorptive stopband

Jhih Ying Shao, Yo Shen Lin

研究成果: 書貢獻/報告類型會議論文篇章同行評審

14 引文 斯高帕斯(Scopus)


This paper presents a new application of absorptive bandstop filter for absorbing the LO-to-RF leakage of mixer in a Q-band heterodyne receiver. The proposed absorptive bandstop filter (ABSF) is achieved by introducing lossy quarter-wavelength resonator to a conventional narrowband bandstop filter. In order to facilitate the receiver system integration, the proposed ABSF is implemented in commercial GaAs pHEMT process. It is designed with a stopband from 31 to 33 GHz, which is the LO frequency range. The measured stopband rejection is better than 35 dB at the stopband center frequency f0 = 32 GHz. Especially, more than 93.4% of the power within the stopband can be dissipated by the ABSF. In this way, by introducing the proposed ABSF between the image rejection filter and the mixer, the impact of LO-to-RF leakage on the conversion gain of mixer can be minimized.

主出版物標題2014 IEEE MTT-S International Microwave Symposium, IMS 2014
發行者Institute of Electrical and Electronics Engineers Inc.
出版狀態已出版 - 2014
事件2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States
持續時間: 1 6月 20146 6月 2014


名字IEEE MTT-S International Microwave Symposium Digest


???event.eventtypes.event.conference???2014 IEEE MTT-S International Microwave Symposium, IMS 2014
國家/地區United States
城市Tampa, FL


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