Investigation of coaxial cable properties for HTS filters

Author

Takeuchi, H. ; Kubota, Y.

Author_Institution

Adv. Mobile Telecommun. Technol. Inc., Aichi, Japan

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

3432

Lastpage

3435

Abstract

To decrease thermal leakage in coaxial cables, we have developed a novel coaxial cable for HTS filters. We call it the "thin outer conductor coaxial cable". The outer conductor of this new cable was made of copper film and was designed to have an optimum thickness of 0.005 mm by the simulation and experimentation of thermal and electrical performance. Coaxial cables that are 1.68 mm in diameter and 90 mm in length have an insertion loss of 0.17 dB at 2.0 GHz. Impedance analysis of the connector joint was evaluated with TDR, and we obtained results for detailed explanations of breakdown in electrical performance. The coaxial cable was tested for low temperature properties and underwent the heat cycle test; however, performance deterioration could not be found.

Keywords

UHF filters; coaxial cables; high-temperature superconductors; losses; superconducting cables; superconducting filters; 0.17 dB; 1.68 mm; 2.0 GHz; 90 mm; HTS filters; coaxial cable properties; connector joint; electrical performance; heat cycle test; impedance analysis; insertion loss; low temperature properties; thermal leakage; thin outer conductor cable; Coaxial cables; Conductive films; Conductors; Copper; Filters; High temperature superconductors; Insertion loss; Superconducting cables; Testing; Thermal conductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.783767

Filename

783767