DocumentCode :
1921389
Title :
Multi-stage dual-mode cross-slotted superconducting filters for telecommunication application
Author :
Cassinese, A. ; Barra, M. ; Panariello, G. ; Vaglio, R.
Author_Institution :
Dipartimento di Sci. Fisiche, Naples Univ., Italy
Volume :
1
fYear :
2001
fDate :
20-24 May 2001
Firstpage :
491
Abstract :
Dual mode high temperature superconducting (HTS) filters represent an interesting device class for telecommunication application since they combine a high power handling capability with a miniaturized size. Here we report on the design and realization of dual mode cross slotted filters presenting a more compact size if compared with the traditional dual mode patch filters. Single stage filters operating in C-band with 1% fractional bandwidth have been designed and tested at prototype level by using double sided YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) and Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ (Tl-2212) superconducting films grown on LaAlO/sub 3/ substrates. The YBCO filter presents insertion losses IL=1 dB and a power handling higher than 10 dBm at T=77 K while the Tl-2212 allows operation at higher temperatures with comparable performances. Dual stage (four poles) and four stage (eight poles) filters with 1% fractional bandwidth operating in C-band and presenting a Chebyshev or a quasi elliptical response have been analyzed. Finally, a four stage filter fitting well on a 1"/spl times/1" substrate was designed.
Keywords :
Chebyshev filters; elliptic filters; high-temperature superconductors; microwave filters; passive filters; resonator filters; superconducting filters; superconducting microwave devices; superconducting resonators; superconducting thin films; 1 dB; 1 in; 77 K; C-band; Chebyshev response; LaAlO/sub 3/; LaAlO/sub 3/ substrates; Tl-2212 superconducting films; Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/; YBCO superconducting films; YBa/sub 2/Cu/sub 3/O/sub 7/; cross-slotted superconducting filters; double sided HTS films; dual-mode superconducting filters; four-stage filters; high power handling capability; high temperature superconducting filters; insertion losses; miniaturized size; multi-stage HTSC filters; quasi elliptical response; telecommunication application; Bandwidth; Degradation; Frequency; High temperature superconductors; Insertion loss; Resonator filters; Superconducting films; Superconducting filters; Surface resistance; Yttrium barium copper oxide;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
ISSN :
0149-645X
Print_ISBN :
0-7803-6538-0
Type :
conf
DOI :
10.1109/MWSYM.2001.966938
Filename :
966938
Link To Document :
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