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Analysis of High-Tc Superconducting Microstrip Antenna Using Modified Spectral Domain Moment Method
Nozomu ISHII Toru FUKASAWA Kiyohiko ITOH
IEICE TRANSACTIONS on Electronics
Publication Date: 1994/08/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Superconducting Devices)
high-Tc superconducting, microstrip antenna, spectral domain moment method, three-fluid model, radiation efficiency, input impedance,
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In this paper, we analyze high-Tc superconducting (HTS) microstrip antenna (MSA) using modified spectral domain moment method. Although it is assumed that the patch and the ground plane of the MSA are perfect electric conductors (PECs) in the conventional spectral domain method, we modify this method to compute the conduction loss of the HTS-MSA. In our analysis, the effect of the HTS film is introduced by the surface impedance which we can estimate by using the three fluid model and experimental results. This paper presents numerical results about the HTS-MSA, for example, the relations between the thickness of the substrate and the radiation efficiency, the temperature and the resonant frequency, and so forth. And we discuss the effective power range where the performance of the HTS-MSA is superior to that of the Cu-MSA.