Aircraft communication antennas isolation reduction technique having upper antenna fuselage top placed and second antenna offset lower region creating destructive half wavelength path difference between two fuselage radiating directions.

摘要

The antenna system is placed on an aircraft fuselage (100) with an upper antenna (140) and lower antenna (210). The upper and lower antennas are separated in wavelength clockwise by a half wavelength minus a quarter wavelength, whilst in the anti clockwise direction they are separated by a half wavelength plus a quarter wavelength. Thus a half wave destructive interference is created between the two antennas, improving isolation between the two antennas.