To provide the horn reflector antenna system suitable for an automatic tracking antenna system with a simple structure, a small size, suppressing gain fluctuation in which beam control is made over a wide range.
The system is provided with a primary radiator 5 emitting a circularly polarized wave signal from a circularly polarized wave generator 1, a reflecting mirror 7 converting a wave emitted from the primary radiator 5 into a plane wave and reflected therein, and a vertical direction rotary shaft 9 driving the reflecting mirror 7 in the vertical direction to control a beam deflection angle. Then the combination between the arrangement position of the reflecting mirror 7 and the arrangement position of the vertical direction rotary shaft 9 and the combination between the arrangement position of the vertical direction rotary shaft 9 and the arrangement position of the primary radiator 5 are selected to be the combination of maximizing the gain and the combination minimizing gain fluctuation with respect to the beam deflection angle.
SUGINOSHITA FUMIYASU
NAKAKITA HISAO
SHIYOUGEN KAZUYOSHI
YAZAWA NORIHIKO
