Comparison of high-temperature-superconductor and metal-based resonators

Author

Namordi, Mooshi R. ; Mogro-Campero, Antonio ; Turner, Larry G. ; Hogue, David W.

Author_Institution

GE Electron. Lab., Syracuse, NY, USA

Volume

39

Issue

9

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

1468

Lastpage

1474

Abstract

A 50-Ω coplanar waveguide (CPW) resonator designed for a fundamental frequency of about 4.75 GHz was fabricated on LaAlO₃. Two versions were fabricated: the first using 1.9-μm-thick gold and the second using 0.6-μm-thick YBa₂Cu₃O ₇. The devices were identically packaged and tested at 77 K. It was found that the high-temperature superconductor (HTS) resonator had a surface resistance, R_s, about six to nine times lower than the Au one. At 45 K, the R_s of the HTS resonator decreases by another factor of 4 compared with its 77 K value. Device characteristics for the HTS resonator are presented

Keywords

barium compounds; high-temperature superconductors; resonators; superconducting devices; superconducting thin films; waveguide components; yttrium compounds; 0.6 micron; 1.9 micron; 4.75 GHz; 45 K; 50 ohm; 77 K; Au resonators; LaAlO₃ substrate; YBa₂Cu₃O₇ resonators; coplanar waveguide; high temperature superconductors CPW resonators; surface resistance; Coplanar waveguides; Costs; Gold; High temperature superconductors; Inorganic materials; Packaging; Superconducting transition temperature; Surface resistance; Testing; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.83819

Filename

83819