EHF/SHF (Super High Frequency) SATCOM (Satellite Communications) Antenna and Radome Test Results
AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH AVIONICS LAB
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The current airborne EHF SATCOM system has a RF power output of 100 watts and an antenna beamwidth of less than 1 degree. As the RF beam from the antenna passes through the dielectric radome it will be refracted at each surface. The resulting change in direction of the beam depends on the frequency, the dielectric constant of the radome, and the shape of the radome surfaces. Tests have been performed to evaluate the beam deflection at 20 and 44 Giga- Hertz. Other systems effects which were evaluated included antenna beam distortion, RF heating, and Radio Frequency Interference between two antennas SHF and EHF under a single radome.
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