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In this paper, a dipole antenna dedicated to VHF-UHF airborne application is presented. The use of a modified Loaded Electromagnetic Band Gap (LEBG) structure in close proximity to the radiating element gives rise to a thin and low-weight antenna with reproducible radiating performances. The initial antenna concept has been validated through measurements. Its radiating characteristics (high gain and...
This paper presents a method to improve the circular polarization of an Archimedean spiral antenna placed over a radial Artificial Magnetic Conductor (AMC). Results have been compared with the same radiating element over a more classical AMC reflector. A prototype of an Archimedean two-wire spiral antenna has been built to operate from 0.5 GHz to 6 GHz. Measurement results with this radial AMC give...
A wideband reflector’s antenna based on quasi-artificial magnetic conductor is proposed. To validate the design, an Archimedean spiral has been backed to this new reflector. In comparison to classical solution using absorbent material, the prototype presents a very low thickness of λ/15 at the lowest operating frequency and an improved gain over a 2.4:1 bandwidth. The whole methodology to design this...
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