High‐performance narrowband superconducting filters with high  Q  resonators at X‐band | Zendy

Song Xiaoke | Zendy; Wei Bin | Zendy; Cao Bisong | Zendy; Zhang Xiaoping | Zendy; Guo Xubo | Zendy; Zhang Guoyong | Zendy; Xu Zhan | Zendy

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High‐performance narrowband superconducting filters with high Q resonators at X‐band

Author(s) -

Song Xiaoke,

Wei Bin,

Cao Bisong,

Zhang Xiaoping,

Guo Xubo,

Zhang Guoyong,

Xu Zhan

Publication year - 2014

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.28381

Subject(s) - return loss , insertion loss , resonator , narrowband , materials science , microwave , distributed element filter , electrical impedance , filter (signal processing) , bandwidth (computing) , optoelectronics , band pass filter , prototype filter , electrical engineering , electronic engineering , physics , optics , low pass filter , telecommunications , engineering , antenna (radio)

This paper presents two narrowband high‐temperature superconducting (HTS) filters at 10 GHz with a 0.6% fractional bandwidth. Uniform impedance rectangular resonator (UIRR) and stepped impedance H‐type resonator (SIHR) are proposed to achieve HTS filters with high Q value, low sensitivity, weak coupling, and good parasitic response. A six‐pole HTS filter that has UIRRs with a Q value of 17,700 is fabricated; this filter has a 19.9 dB return loss and a 0.38 dB insertion loss. An eight‐pole HTS filter that has SIHRs with a Q value of 12,100 is also manufactured; this filter has a 12.2 dB return loss and a 0.64 dB insertion loss. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1516–1520, 2014

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