Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-07-24
1992-04-21
LaRoche, Eugene R.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505700, 505739, 333 99S, 455325, 455281, 455129, H04B 102, H04B 118
Patent
active
051068265
ABSTRACT:
Systems for transmitting and/or receiving electromagnetic signal radiation are disclosed. The inventive systems are distinguished from previous such systems in that each includes at least one resonant cavity comprising a housing containing a body, e.g., a cylindrical or helical body, of relatively high T.sub.c superconducting material. Significantly, this body is fabricated using a new, unconventional procedure. As a result, the body exhibits substantially lower surface resistances than either previous such bodies of relatively high T.sub.c superconducting material, fabricated using conventional procedures, or bodies of copper, at 77 Kelvins and at frequencies ranging from about 10 MHz to about 2000 MHz. Moreover, as a consequence, the resonant cavity containing the unconventionally fabricated body exhibits much higher quality factors, Q, at the above temperature and frequencies, than previous such cavities containing either conventionally fabricated bodies of relatively high T.sub.c superconducting material, or bodies of copper.
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Alford Neil M.
Peterson George E.
Stawicki Robert P.
AT&T Bell Laboratories
Books Glen E.
LaRoche Eugene R.
Lee Benny T.
Tiegerman Bernard
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