Narrowband superconducting filters for mobile communication

Jacob, M.V., Mazierska, J., and Knack, A. (2004) Narrowband superconducting filters for mobile communication. Transactions of the Materials Research Society of Japan, 29 (4). pp. 1273-1276.

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Abstract

Supcrconducting planar filters exhibit higher selectivity, bigger out-of-band rejection and smaller interference between adjacent channels than metallic planar filters. Using ideas of a modified hairpin, the Chebyshev approximation and cross coupling between non-adjacent resonators, we have designed two HTS filters utilising YBa2CU307-6 thin films on a 58mmx 14mmxO.3mrn LaAlO3 substrate. A 12-pole superconducting bandpass filter for centre frequency of 1.84 GHz and bandwidth of 5 MHz exhibits simulated passband insertion loss of 0.1 dB and the out-of-band rejection of 50 dB at I MHz from the passband. A HTS bandstop filter was designed using the same type of the resonator as the bandpass filter to obtain 50 dB attenuation for the frequency from 1.621 GHz to 1.625 GRz (Iridium satellite).

Item ID: 7204
Item Type: Article (Refereed Research - C1)
Keywords: filter; HTS; mobile communication; superconductors
ISSN: 1382-3469
Date Deposited: 29 Mar 2010 02:10
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091201 Ceramics @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890199 Communication Networks and Services not elsewhere classified @ 70%
86 MANUFACTURING > 8616 Computer Hardware and Electronic Equipment > 861603 Integrated Circuits and Devices @ 30%
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