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A narrow‐band high‐temperature superconducting filter with wide upper stopband
Author(s) -
Gong Liming,
Wei Bin,
Cao Bisong,
Dong Shiwei,
Dong Yazhou,
Yu Hongxi,
Jun Li
Publication year - 2013
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.27324
Subject(s) - passband , stopband , resonator , band pass filter , spurious relationship , materials science , microwave , wideband , bandwidth (computing) , capacitor , superconductivity , optoelectronics , high temperature superconductivity , electrical engineering , electronic engineering , physics , condensed matter physics , engineering , telecommunications , computer science , voltage , machine learning
This article presents a novel interdigital capacitor resonator (ICR), which has a high spurious frequency and compact size. A six‐pole high‐temperature superconducting (HTS) bandpass filter (BPF) has been designed and fabricated with this ICR on a double‐sided MgO‐based YBCO thin film. Measurement at cryogenic temperature shows a fractional bandwidth of 0.4%, and an ultra high spurious passband at about 4.1 f 0 . Moreover, the measurement shows a good agreement with simulation in wideband response. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:443–447, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27324

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