Power-induced switching of an HTS microstrip patch antenna

Power-induced switching has been observed by Chaloupka et al in a miniaturized patch antenna, patterned from an epitaxial film of YBa sub(2)Cu sub(3)O sub(7- delta ) deposited onto LaAlO sub(3). The antenna is resonant at around 2.3 Ghz with a loaded Q of 800 at 77 K and a radiation efficiency of up...

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Bibliographic Details
Published inSuperconductor science & technology Vol. 4; no. 9; pp. 436 - 438
Main Authors Portis, A M, Chaloupka, H, Jeck, M, Piel, H, Pischke, A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.09.1991
Institute of Physics
Subjects
Antennas
Applied sciences
Exact sciences and technology
Radiocommunications
Telecommunications
Telecommunications and information theory
Integrated antenna
Plate antenna
Aluminium Lanthanum Oxides Mixed
Epitaxial film
Miniaturization
Microstrip
Barium Copper Yttrium Oxides Mixed
Antenna
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Summary:Power-induced switching has been observed by Chaloupka et al in a miniaturized patch antenna, patterned from an epitaxial film of YBa sub(2)Cu sub(3)O sub(7- delta ) deposited onto LaAlO sub(3). The antenna is resonant at around 2.3 Ghz with a loaded Q of 800 at 77 K and a radiation efficiency of up to 65%. At mean current densities above 2 x 10 super(6) A/cm super(2) the resonant frequency and Q drop hysteretically, decreasing further with increased current. These effects are attributed to the thermal quenching of weak links present in the inductive section of the antenna.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/4/9/015