Tunable superconducting band-stop filters

Author

Gevorgian, S.S. ; Carlsson, E.F. ; Kollberg, E.L. ; Wikborg, E.

Author_Institution

Dept. of Microelectron., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

2

fYear

1998

fDate

7-12 June 1998

Firstpage

1027

Abstract

Electrically tunable notch filters based on bulk single crystal SrTiO/sub 3/ (STO) parallel-plate resonators with High Temperature Superconducting (HTS) electrodes are reported. The filters operate at temperatures below 90 K. The center frequency, located in the range 0.5-2.0 GHz, can be controlled with an applied voltage, in some cases more than 100%. Filters are designed for operation at high microwave power levels in advanced wireless communication systems.

Keywords

UHF filters; circuit tuning; ferroelectric devices; high-temperature superconductors; microwave filters; notch filters; passive filters; resonator filters; superconducting microwave devices; superconducting thin films; 0.5 to 2 GHz; 90 K; HTS electrodes; HTSC films; STO parallel-plate resonators; SrTiO/sub 3/; bulk single crystal SrTiO/sub 3/; electrically tunable notch filters; high microwave power levels; superconducting band-stop filters; wireless communication systems; Electrodes; Frequency; High temperature superconductors; Microwave filters; Resonator filters; Superconducting filaments and wires; Superconducting filters; Superconducting microwave devices; Temperature control; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1998 IEEE MTT-S International

Conference_Location

Baltimore, MD, USA

ISSN

0149-645X

Print_ISBN

0-7803-4471-5

Type

conf

DOI

10.1109/MWSYM.1998.705168

Filename

705168