Influence of the surface gold thin film on HTS filter performance

Author

Xinxiang, Lu ; Shichao, Jin ; Xiaoping, Zhang ; Bin, Wei ; Bisong, Cao

Author_Institution

Tsinghua Univ., Beijing

fYear

2007

fDate

18-21 April 2007

Firstpage

1

Lastpage

3

Abstract

A four-pole high temperature superconducting (HTS) filter was designed and fabricated to investigate the influence of gold (Au) thin film on the HTS filter performance, including the bandwidth, insertion loss and return loss. Due to the resistance of the Au, dissipative loss is an important issue. Simulation showed that the insertion loss was reduced with the Au film being gradually thinner. The experimental results of 0.2 dB insertion loss, -22 dB return loss were achieved and the bandwidth met the design need when the gold film was thinner than 90 nm. Furthermore, a thin Au layer is in favor of the stability for HTS material as well as for the HTS filter.

Keywords

UHF filters; gold; high-temperature superconductors; metallic thin films; microstrip filters; microstrip lines; radiocommunication; superconducting filters; Au; HTS filter performance; HTS material stability; dissipative loss; four-pole high temperature superconducting filter; gain 22 dB; gold thin film surface; insertion loss; loss 0.2 dB; microstrip configuration; wireless communication system; Bandwidth; Gold; High temperature superconductors; Insertion loss; Performance loss; Stability; Superconducting filters; Superconducting thin films; Surface resistance; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2007. ICMMT '07. International Conference on

Conference_Location

Builin

Print_ISBN

1-4244-1049-5

Electronic_ISBN

1-4244-1049-5

Type

conf

DOI

10.1109/ICMMT.2007.381400

Filename

4266159