Characteristic impedance of a microwave transmission line using a Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub x/ superconductor on a MgO substrate

Author

Shimaoka, K. ; Nemoto, M. ; Yoshikawa, S. ; Yoshida, I. ; Yoshisato, Y.

Author_Institution

Tsukuba Res. Centre, Sanyo Electr. Co. Ltd., Ibaraki, Japan

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

2558

Lastpage

2561

Abstract

Characteristic impedance of microstrip lines having a Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub x//MgO/Au structure is measured using a low-temperature vector network measuring system. A small test fixture for the superconducting microstrip lines is fabricated and mounted on a cryocooler. A correction method is applied to the data at low temperatures and the characteristic impedance of the superconducting microstrip lines is determined from the corrected data at 80 K.

Keywords

barium compounds; calcium compounds; electric impedance measurement; high-temperature superconductors; magnesium compounds; microstrip lines; microwave reflectometry; network analysers; superconducting device testing; superconducting microwave devices; thallium compounds; 80 K; MgO; Tl/sub 2/Ba/sub 2/CaCu/sub 2/O-MgO-Au; characteristic impedance; correction method; cryocooler; low-temperature vector network measuring system; microwave transmission line; superconducting microstrip lines; test fixture; Fixtures; Gold; Impedance measurement; Microstrip; Superconducting microwave devices; Superconducting transmission lines; Temperature; Testing; Transmission line measurements; Transmission lines;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.621761

Filename

621761