Resonant Characteristics of Circular HTC Superconducting Printed Antenna Covered with a Dielectric Layer
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Date
2018-07-23
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Université de M'sila
Abstract
Effects of a superstrate layer on the resonant frequency and bandwidth of a high Tc
superconducting (HTS) circular printed patch are investigated in this paper. For that, a rigorous
full-wave spectral analysis of superconducting patch in multilayer configuration is described. In such an
approach, the spectral dyadic Green’s function which relates the tangential electric field and currents at
various conductor planes should be determined. Integral equations are solved by a Galerkin’s moment
method procedure, and the complex resonance frequencies are studied with basis functions involving
Chebyshev polynomials in conjunction with the complex resistive boundary condition. To include
the superconductivity of the disc, its complex surface impedance is determined by using London’s
equation and the model of Gorter and Casimir. Numerical results are compared with experimental
results of literature as well as with the most recent published calculations using different methods.
A very good agreement is obtained. Finally, superstrate loading effects are presented and discussed
showing interesting enhancement on the resonant characteristics of the superconducting antenna using
combinations of Chebyshev polynomials as set of basis functions.
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