Title :
A survey of possible passive antenna applications of high-temperature superconductors
Author :
Dinger, Robert J. ; Bowling, Donald R. ; Martin, Anna M.
Author_Institution :
US Naval Weapons Center, China Lake, CA, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
A survey of possible applications of high-temperature superconductors (HTSs) to antennas and antenna feed networks is presented. The frequency range considered is 1 MHz for 100 GHz. Three antenna application areas seem appropriate for HTS material: electrically small antennas and their matching networks; feed and matching networks for compact arrays with enhanced directive gain (superdirective arrays); and feed networks for millimeter-wave arrays. Preliminary experimental results are presented on YBaCuO and TlBaCaCuO 500 MHz half-loop antennas that show an increase in radiation efficiency (compared with a copper antenna at the same temperature) by a factor of 5 for the HTS antennas
Keywords :
antenna arrays; antenna feeders; antennas; barium compounds; calcium compounds; directive antennas; high-temperature superconductors; superconducting devices; thallium compounds; yttrium compounds; 1 MHz to 100 GHz; TlBaCaCuO; YBaCuO; antenna application areas; antenna feed networks; antennas; compact arrays; electrically small antennas; enhanced directive gain; experimental results; frequency range; half-loop antennas; high temperature superconductors; high-temperature superconductors; matching networks; microwave antenna; millimeter-wave arrays; radiation efficiency; superdirective arrays; Antenna arrays; Antenna feeds; Conducting materials; Directive antennas; Frequency; High temperature superconductors; Loaded antennas; Microwave technology; Superconductivity; Surface resistance;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
