A new high-temperature superconducting double-hybrid coupler with wide bandwidth

Author

Bechteler, T. ; Mayer, B. ; Weigel, R.

Author_Institution

Inst. fur Hoch- und Hochstfrequenztech., Univ. der Bundeswehr Munchen, Neubiberg, Germany

Volume

1

fYear

1997

fDate

8-13 June 1997

Firstpage

311

Abstract

We report on the design and performance of new high-temperature superconducting couplers fabricated in microstrip technology. We present experimental results for a 3 dB- and a 0 dB-coupler (i.e. a crossover device) at 10 GHz. The planar coupler structures were patterned into YBaCuO thin films deposited on MgO substrates on both sides. As a design tool, we employed a commercial microwave simulation program. Verification was done using special test chips. We attained extremely low insertion loss values over bandwidths of 45 per cent (3 dB-coupler) and 30 per cent (0 dB-coupler), respectively.

Keywords

barium compounds; high-temperature superconductors; microstrip couplers; superconducting microwave devices; yttrium compounds; 10 GHz; MgO; MgO substrate; YBaCuO; YBaCuO thin film; crossover device; design; high-temperature superconducting double-hybrid coupler; insertion loss; microstrip technology; microwave simulation; planar coupler; wideband device; Bandwidth; Circuit simulation; Circuit testing; Couplings; High temperature superconductors; Microstrip; Superconducting microwave devices; Superconducting transmission lines; Transmission line theory; Yttrium barium copper oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1997., IEEE MTT-S International

Conference_Location

Denver, CO, USA

ISSN

0149-645X

Print_ISBN

0-7803-3814-6

Type

conf

DOI

10.1109/MWSYM.1997.604581

Filename

604581