Mh. Zhu et al., DESIGN AND PERFORMANCE OF A 4.5GHZ CIRCULARLY-POLARIZED YBA2CU3O7 MICROSTRIP ANTENNA, Physica. C, Superconductivity, 282, 1997, pp. 2515-2516
A 4.5GHz circularly polarized YBCO microstrip antenna was designed and
fabricated. Measurements showed that at 77K the superconducting anten
na had about 3dB gain improvement over the comparable silver antenna,
in agreement with the calculated results using the modified Green func
tion method.