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Abstract
This paper presents a compact linearly polarized double-arm Archimedean spiral antenna positioned between a circular reflector and a spiral parasitic element. The proposed design has a simulated gain of 10.6 dBi and an aperture reduction of 40% when compared to an equivalent half-wavelength dipole. Linear polarization has been maintained despite the spiral geometry of the antenna.
Acknowledgement
The author would like to thank Mr. Anoop Chandrahasan Menon for his assistance in developing the original simulation model of this antenna.