12 November 1999 Current distribution and input impedance of spiral radiators in the microstrip array
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Abstract
The phased array composed from spiral microstrip radiators is considered. This array can be applied as radiation focusing spiraphase system. The lack of traditional phase shifters ensures good cost, technological and constructive characteristics of spiraphase arrays in a microwave range. Antenna construction and mathematical model are considered. This device permits to realize a focusing of antenna feed field by a microstrip antenna array. The microstrip element shape is arbitrary. The structure contains controlled elements (crystal diodes). These array electrodynamic characteristics are controlled by diodes. The mathematical model is obtained by integral equation method. Microstrip spiral radiators current distribution and input impedance are investigated. The numerical results can be used to develop antennas with optimum parameters.
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Alexander O. Kasyanov, Victor A. Obukhovets, "Current distribution and input impedance of spiral radiators in the microstrip array", Proc. SPIE 3795, Terahertz and Gigahertz Photonics, (12 November 1999); doi: 10.1117/12.370179; https://doi.org/10.1117/12.370179
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KEYWORDS
Antennas

Chemical elements

Mathematical modeling

Magnetism

Waveguides

Diodes

Phased arrays

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