Quadrifilar Helix Antenna for Enhanced Air-to-Ground Communications
Technical Report,01 Sep 2014,31 Oct 2015
ARMY RESEARCH LAB ADELPHI MD ADELPHI
Pagination or Media Count:
A self-phased quadrifilar helix antenna is designed, simulated, fabricated and measured for use in Army air-to-ground and airborne-assisted ground-to-ground communication systems. The effect of the metallic ground plane provided by the aircraft fuselage is explored through simulation, and the ideal standoff distance from this ground plane to maximize realized gain is determined. The inclusion of radio frequency RF absorber material to shield the antenna from the metallic ground plane is also explored. Prototype antenna measurements are presented and compared with simulation results. The antenna operates very well over the intended TW-400 RF band, with a realized gain of 4 to 4.5 dBiC and functional beamwidth of 90 deg. to 110 deg..
- Electrical and Electronic Equipment
- Radio Communications