| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system that prevents electromagnetic waves generated by a base station from disturbing electromagnetic waves arriving at the base station again, and can increase a distance between the base station and an object or a terminal station. SOLUTION: The communication system comprises the base station 10, having a transmission circuit 1, a base station antenna, a reception circuit 2, and a circulator, and a terminal station 20. In the communication system, base station antiphase distribution means 3, 4 are connected to the transmission circuit 1 and two circulators 5, 6, base station polarization antennas 7, 8 are connected to other ports of the two circulators 5, 6, and an in-phase synthesis means 9 is further connected to other ports of the circulators 5, 6. COPYRIGHT: (C)2008,JPO&INPIT
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