Title :
Tracking error of phased array antenna
Author :
Ohmori, Shingo ; Taira, Shinichi ; Austin, Michael
Author_Institution :
Kashima Space Res. Center, Min. of Post. & Telecommun., Ibaraki, Japan
Abstract :
A steerable phased array antenna developed for satellite communications is now being testing on a Boeing 747 cargo jet that has transoceanic flight route between Narita and Anchorage. The antenna can track the satellite by electrical beam scanning within +or-60 degrees with respect to the axis of the aircraft. The experimental results show that the antenna has tracking errors between receiving and transmitting frequencies. Experimental results and a theoretical analysis of the tracking error are given, and a method to eliminate this effect is proposed. It is suggested that the adoption of frequency-dependent phase shifters can completely eliminate the beam tracking errors between transmitting and receiving frequencies.<>
Keywords :
antenna phased arrays; antenna radiation patterns; mobile antennas; tracking systems; Boeing 747 cargo jet; airborne antenna; electrical beam scanning; frequency-dependent phase shifters; satellite communications; steerable phased array antenna; tracking errors; Aircraft; Antenna arrays; Frequency; Phase shifters; Phased arrays; Receiving antennas; Satellite antennas; Satellite communication; Testing; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134925
