HTS hairpin microstrip filter on r-cut sapphire substrate

Author

Aiga, Fumihiko ; Fuke, Hiroyuki ; Terashima, Yoshiaki ; Yamazaki, Mutsuki ; Kayano, Hiroyuki ; Hashimoto, Tatsunori

Author_Institution

Corporate Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

287

Lastpage

290

Abstract

We have developed a 17-pole high-temperature superconductor thin-film hairpin microstrip filter on r-cut sapphire substrate. We determined the optimum orientation of hairpin resonators on r-cut sapphire substrates, considering the anisotropy of dielectric permittivity. With optimum orientation, the desired frequency response was realized. On the other hand, when the orientation was not the optimum, the frequency response was violently disturbed. The cause of the disturbance of the frequency response was investigated.

Keywords

high-temperature superconductors; microstrip filters; microstrip resonators; permittivity; resonator filters; sapphire; substrates; superconducting filters; superconducting microwave devices; superconducting resonators; superconducting thin films; Al₂O₃; dielectric permittivity anisotropy; frequency response; hairpin resonator; high temperature superconductor thin film; multi-pole microstrip filter; r-cut sapphire substrate orientation; Anisotropic magnetoresistance; Dielectric substrates; Dielectric thin films; Frequency response; High temperature superconductors; Microstrip filters; Permittivity; Resonator filters; Superconducting filters; Superconducting thin films;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.813711

Filename

1211598