NDLI: Compact Superconducting Bandpass Filter Using Dual-Mode Loop Resonators

Content Provider	IEEE Xplore Digital Library
Author	Haiwen Liu Yulong Zhao Xiaohua Li Yichao Fan Wenyuan Xu Xuehui Guan Liang Sun Yusheng He
Copyright Year	2002
Abstract	A compact superconducting bandpass filter using dual-mode loop resonator is developed for wireless local area networks (WLAN) in this paper. Shunt capacitive loading structure (SCLS) is applied to enhance the self-capacitance and electrical length of the loop resonator. Compared to the conventional resonator without SCLS, the central frequency of the proposed resonator is reduced by 27%. Furthermore, a four-pole superconducting bandpass filter with central frequency of 5.2 GHz for WLAN application is designed by cascading two resonators with SCLS. Also, a non-resonance-node resonator is added to realize the coupling between degenerate modes of resonators. Finally, the proposed filter is fabricated by depositing YBCO films on a 0.5-mm-thick MgO substrate. Its size occupies only 20 mm × 15 mm. Measured results demonstrate an insertion loss of less than 1.0 dB and a return loss of better than 16 dB. Measured results agree well with the simulated results.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1501304
Ending Page	1501304
Page Count	1
File Size	462923
File Format	PDF
ISSN	10518223
Volume Number	23
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resonator filters Superconducting filters Band pass filters Microstrip filters Resonant frequency Couplings High temperature superconductors superconductor Bandpass filter dual-mode shunt stub
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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