A narrow-band high-temperature superconducting filter with wide upper stopband.

Authors :: Gong, Liming
Wei, Bin
Cao, Bisong
Dong, Shiwei
Dong, Yazhou
Yu, Hongxi
Jun, Li
Source :: Microwave & Optical Technology Letters. Feb2013, Vol. 55 Issue 2, p443-447. 5p. 2 Diagrams, 5 Graphs.
Publication Year :: 2013
Abstract: 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 f0. 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 [ABSTRACT FROM AUTHOR]