EFFECTS OF DC MAGNETIC-FIELD UPON THE PROPERTIES OF A HTS MICROSTRIP ANTENNA AT 4.2 K

Authors
ZHU MH CAO BS LI N HE AS ZHANG XX ZHAO YG DONG DJ WANG YJ ZHOU YL LU HB CUI DF YI CL LUO KL WANG YJ LIU TJ GU BL
Citation
Mh. Zhu et al., EFFECTS OF DC MAGNETIC-FIELD UPON THE PROPERTIES OF A HTS MICROSTRIP ANTENNA AT 4.2 K, Applied superconductivity, 4(5-6), 1996, pp. 241-246
Citations number
16
Categorie Soggetti
Material Science","Physics, Applied","Physics, Condensed Matter
Journal title
Applied superconductivity → ACNP
ISSN journal
09641807
Volume
4
Issue
5-6
Year of publication
1996
Pages
241 - 246
Database
ISI
SICI code
0964-1807(1996)4:5-6<241:EODMUT>2.0.ZU;2-6
Abstract
A circular polarized microstrip antenna with a working frequency of 6. 26 GHz was fabricated from YBCO HTS films. The transmission coefficien t and circular polarization ratio of the antenna at different external magnetic field B were measured at 4.2 K. The experimental results sho wed that its transmission coefficient and circular polarization ratio hardly changed with B up to 1 T. It is concluded that the field-induce d increase of surface resistance of YBCO films would not influence the microwave properties of this antenna at B less than or equal to 1 T a nd T = 4.2 K. (C) 1997 Elsevier Science Ltd.