Accurate design of high Tc superconducting microstrip filter at UHF band for radio astronomy front end

Author

Zhang, Guoyong ; Lancaster, Michael J. ; Huang, Frederick ; Zhu, Meihong ; Cao, Bisong

Author_Institution

Univ. of Birmingham, UK

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

1117

Abstract

An eight-pole high temperature superconducting (HTS) microstrip bandpass filter with 1.3% bandwidth at 600 MHz UHF band for a radio astronomy front end is presented. Effective efforts have been made to eliminate the discrepancies between measured and computed responses in the design and packaging. The untuned measurement results of this filter at 30 K show a maximum insertion loss 0.22 dB, a minimum passband return loss 15 dB, and minimum out-of-band rejection 70 dB.

Keywords

UHF filters; band-pass filters; barium compounds; high-temperature superconductors; microstrip filters; radioastronomy; superconducting filters; superconducting thin films; ytterbium compounds; 0.22 dB; 15 dB; 30 K; 600 MHz; 70 dB; UHF band; YBa₂Cu₃O₇; band rejection; eight-pole high temperature superconducting microstrip bandpass filter; packaging; passband return loss; radioastronomy; untuned measurement; Band pass filters; Bandwidth; Extraterrestrial measurements; High temperature superconductors; Loss measurement; Microstrip filters; Packaging; Radio astronomy; Superconducting filters; UHF measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1339181

Filename

1339181