| 摘要 |
PROBLEM TO BE SOLVED: To provide a phased array antenna employing an antenna element which turns to the direction of a satellite having an elevation angle lower than the zenith (an elevation angle lower than 90 degree). SOLUTION: A phased array antenna comprises element antennas arranged co-planarly with two main beams on a hemispherical surface, or a phased array antenna comprises element antennas arranged co-planarly wherein each element antenna is composed of a dipole antenna and a reflector arranged at an interval of 0.35λ-0.55λ, or a phased array antenna comprises parasitic elements and element antennas with two main beams on a hemispherical surface which are arranged alternately. COPYRIGHT: (C)2009,JPO&INPIT
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