Abstract
We examine both theoretically and experimentally the possibility of miniaturization of planar microstrip dipole antennas of small electric dimensions. The antennas are made from high-temperature superconductors. The dependence of the matching conditions and the bandwidth on the design and geometrical features of the antennas is analyzed. It is shown that a superconductor antenna of size L≅(0.05–0.1)λ can have about 100% efficiency and a bandwidth of 0.2–2%. We propose a miniature microstrip antenna of dimensions 11 mm×11 mm for the frequency band 1.3 GHz. Measurements of the radio characteristics of the copper mockup of the antenna confirmed the efficiency of the optimization.
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