Examination on power handling capability of superconducting patch antenna

Citation
K. Ehata et al., Examination on power handling capability of superconducting patch antenna, IEEE APPL S, 9(2), 1999, pp. 3081-3084
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
9
Issue
2
Year of publication
1999
Part
3
Pages
3081 - 3084
Database
ISI
SICI code
1051-8223(199906)9:2<3081:EOPHCO>2.0.ZU;2-T
Abstract
Measured results of power handling capability characteristics of supercondu cting patch antenna and it's improvement are reported. A direct-fed patch a ntenna is fabricated by YBa2Cu3Oy thin film with 50nm thickness. The gain o f the antenna does not change with the applied power up to 26.3dBm at 12.3K , but drop of the gain is observed more than 26.5dBm. It is found by electr omagnetic analysis that this gain drop occurs due to huge current concentra tion in the direct-fed patch. However, this current concentration can be re duced using the gap-coupled feed, and breakdown power is expected to be thr ee times larger than that of direct feed.