Tuning of Superconducting Filters With Laser Ablation Technique

Author

Courrèges, Stanis ; Thibon, Clément ; Houndonougbo, Fiffamen A. ; Crunteanu, Aurélian ; Madrangeas, Valérie ; Maignan, Michel

Author_Institution

Micro & Nanotechnol. for Optoelectron. & Microwave Components (MINACOM) Dept., Univ. of Limoges, Limoges, France

Volume

19

Issue

5

fYear

2009

Firstpage

3715

Lastpage

3721

Abstract

Superconducting planar microwave filters manufactured without tuning functionality often do not rigorously agree with their specifications. This paper suggests a method for adjusting the center frequencies of microstrip superconducting filters without using tuning screws in the device packages. Trimming with laser ablation is judiciously used to change the resonant frequencies of cross open-loop resonators and thus adjust the center frequencies of filters. A technique for adjusting the interresonator coupling is also proposed.

Keywords

circuit tuning; laser ablation; microstrip filters; microwave filters; resonator filters; superconducting microwave devices; cross open-loop resonator; device package; laser ablation technique; microstrip filter; resonant frequency; superconducting planar microwave filter tuning; Frequency adjustment; laser ablation; microstrip superconducting quasi-elliptic microwave filters; tuning;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2021574

Filename

5136200