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This paper presents a small, low profile, 2" thick and 14" in aperture, spiral antenna backed by a thin ferrite ground plane. The antenna is intended to cover satellite (UHF TacSat (earth to LEO, 243-318 MHz)) and radio (PRC-148, PRC- 117F, PSC-5D (243-512 MHz)) communications. Miniaturization, ground plane treatment, and resistive loading techniques are considered, and a design optimization...
This letter discusses a miniature low profile ultrawideband (UWB) spiral. The antenna is miniaturized using a combination of dielectric and inductive loading. In addition, a ferrite coated ground plane is adopted in place of the traditional metallic ground plane for profile reduction. Using full-wave simulations and measurements, it is shown that the miniaturized spiral can achieve similar performance...
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