Performance of hybrid HTS filter/GaAs low noise amplifier and microwave characterization of YBCO HTS resonators on R-plane sapphire

Author

Toncich, S.S. ; Miranda, F.A. ; Bhasin, K.B. ; Kascak, T.J.

Author_Institution

Bird Electronic Corporation, Solon, OH 44139, USA

fYear

1993

fDate

6-10 Sept. 1993

Firstpage

182

Lastpage

184

Abstract

Research efforts are underway at NASA-Lewis in High-Transition-Temperature-Superconductor (HTS) system level design and development as well as in new materials. For the first time, YBa2Cu3O7-Â¿ (YBCO) and Tl2Ba2CaCu2Ox (TBCCO) double-sided HTS filter/GaAs low noise amplifier (LNA) hybrid circuits have been realized. The HTS/GaAs hybrid circuit exhibited higher gain and lower noise figures than gold filter/GaAs LNA circuits. X-band microstrip linear resonators have been fabricated on YBCO HTS films on R-plane sapphire (R-A12O3). Linear resonators patterned on films with Yttria Stabilized Zirconia (YSZ) buffer layers performed poorly while the unloaded quality factor (Q0) of those patterned on films deposited on Cerium Oxide (CeO2) buffer layers were 50% higher than those of similar all-gold resonators at 77 K.

Keywords

Buffer layers; Circuits; Gallium arsenide; High temperature superconductors; Low-noise amplifiers; Microwave amplifiers; Microwave filters; Resonator filters; System-level design; Yttrium barium copper oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1993. 23rd European

Conference_Location

Madrid, Spain

Type

conf

DOI

10.1109/EUMA.1993.336835

Filename

4136564