Third-order intermodulation measurements of microstrip bandpass filters based on high-temperature superconductors

Author

Sato, H. ; Kurian, J. ; Naito, M.

Author_Institution

NTT Basic Res. Labs., Kanagawa, Japan

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

1109

Abstract

The insufficient power-handling capability of high-temperature superconducting microwave filters has been a serious barrier to their application. To clarify the key parameters for improving the power-handling capability of rf filters based on high-temperature superconductors with microstrip structures, we synthesized bandpass filters with different layouts using several kinds of thin film high-temperature superconductors, and performed third-order intermodulation measurements on them. The experimental results indicate that increasing the film thickness and utilizing MBE-grown films of NdBa₂Cu₃O₇ films are effective in obtaining microstrip filters with high power-handling capability.

Keywords

Chebyshev filters; band-pass filters; barium compounds; high-temperature superconductors; intermodulation measurement; microstrip filters; microwave filters; neodymium compounds; passive filters; superconducting filters; superconducting thin films; MBE grown films; NdBa₂Cu₃O₇; NdBa₂Cu₃O₇ films; high temperature superconducting microwave filters; microstrip bandpass filters; microstrip filters; microstrip structures; molecular beam epitaxy; power handling capability; rf filters; third order intermodulation measurements; Band pass filters; High temperature superconductors; Microstrip filters; Microwave filters; Molecular beam epitaxial growth; Performance evaluation; Superconducting films; Superconducting filters; Superconducting microwave devices; Superconducting thin films;

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.2004.1339179

Filename

1339179