نویسندگان
1 مرکز تحقیقات فضایی، پژوهشگاه فضایی ایران
2 دانشگاه صنعتی خواجه نصیرالدین طوسی
3 دکتری، مرکز تحقیقات فضایی، پژوهشگاه فضایی ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
Choke ring antenna is one of the best options among many types of antennas being used for LEO satellites
operating in microwave frequencies. In this paper, a four-ring stepped choke ring antenna with a descending
profile has been designed, optimized, fabricated and tested. This cylindrical waveguide fed antenna produces
circular polarization by using a septum. The wide radiation pattern of this antenna covers 125 degrees in 10.5
GHz with a gain better than 3dB. To minimize the effects of the satellite body and solar panels on the radiation
pattern, the antenna has been mounted on a satellite mock-up whose effects have been fully investigated in
simulation and measurement..
کلیدواژهها [English]