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Accurate design of a compact superconducting microstrip filter
Author(s) -
Peng Huili,
Guo Xubo,
Jin Shichao,
Piao Yunlong,
Zhang Xiaoping,
Wei Bin,
Gao Baoxin,
Cao Bisong
Publication year - 2009
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.24018
Subject(s) - return loss , microstrip , resonator , microwave , filter (signal processing) , superconductivity , materials science , substrate (aquarium) , spiral (railway) , insertion loss , optoelectronics , electronic engineering , electrical engineering , physics , engineering , telecommunications , condensed matter physics , mechanical engineering , oceanography , geology , antenna (radio)
This article presents a six‐pole high‐temperature superconducting (HTS) filter at 2.5 GHz with a compact size of 10 mm × 15 mm on MgO substrate. Twin‐spiral resonators with high simulation accuracy are used in the design procedure. EM simulations verify that the filter response is insensitive to the variations of the cell sizes and the substrate parameters. The untuned measurement of the HTS filter at 70 K shows a high performance. The minimum return loss is 14.7 dB without any tuning. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 141–144, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24018