Abstract
An electrically small wire dipole antenna with a shunted stub matching network has been analyzed to determine the improvement in radiation efficiency that can be achieved by making the metallic components from high-temperature superconducting (high T/sub c/ or HTS) material. The analysis shows that significantly higher radiation efficiencies can be obtained with HTS material only if the dielectric losses are kept to very low values. A loss tangent of less than 10/sup -4/ is necessary for any dielectric materials in the transmission lines and support structures for the antenna; a loss tangent of at least 10/sup -5/ is desirable, particularly if the dipole length is 0.1 wavelength or less.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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