Adjustable multilayer HTS filters

Citation
K. Chen et al., Adjustable multilayer HTS filters, IEEE APPL S, 11(2), 2001, pp. 4010-4013
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
11
Issue
2
Year of publication
2001
Pages
4010 - 4013
Database
ISI
SICI code
1051-8223(200106)11:2<4010:AMHF>2.0.ZU;2-S
Abstract
An adjustable multilayer high-temperature superconductor (FITS) bandpass fi lter has been fabricated. Taped comb-line filters with multilayer structure s were designed. YBa2Cu3O7-delta (YBCO) thin films deposited on LaAlO3 were used to construct the packaged multilayer FITS filter. The electrical leng th of the resonators in the filter was smaller than a quarter-wave length. The frequency responses of the filter were measured at liquid nitrogen temp erature 77 K. The insertion loss of the packaged filter was determined to b e less than 0.5 dB. By mechanically adjusting the multilayer structure, the center frequencies of the filter changed from 1.78 to 1.92 GHz, and the va riations of the bandwidth from 60 to 150 MHz were also obtained.