Gg. Cook et al., PREDICTIONS OF THE EFFICIENCIES OF SUPERCONDUCTING SMALL ANTENNAS CONNECTED TO LOSSY GROUND PLANES USING A SOMMERFELD INTEGRAL TECHNIQUE, Journal of applied physics, 76(2), 1994, pp. 1266-1268
Electrically small loops and monopoles are modeled over infinite lossy
ground planes using a modification to the Sommerfeld approach, in ord
er to assess the performance of YBCO antennas connected to typical met
allic ground planes. Calculated results suggest that for antennas with
low radiation resistances, significant efficiency improvements can be
obtained with YBCO elements even if the ground planes remain lossy, a
nd that little is to be gained by making the ground planes superconduc
ting if the antenna elements remain lossy.