| 摘要 |
PROBLEM TO BE SOLVED: To allow an antenna to change a transmitter side coverage and a receiver side coverage by changing signal strength of transmission reception channels by sectors. SOLUTION: A transceiver 100 that applies frequency conversion to a CDMA modulation signal and a received signal, a distributor 200 that distributes a forward channel signal by each sector, a coupler 300 that couples reverse channel signals by each sector, and an antenna interface station 400 that adds a DC voltage to the forward channel signal, transmits the resulting signal to a Battler matrix section and transmits the reverse channel signal to the coupler 300 are installed indoor. Furthermore, the Battler matrix section 600 that gives a phase difference to the forward channel signal to generate a beam shaping signal, transmits the resulting signal, and converts the received signal into the reverse channel signal by each sector and an active high frequency module that emits the beam shaped signal from the Battler matrix station 600 to space at a prescribed beam width and a prescribed directive angle, receives and amplifiers the reverse channel signal from a subscriber and transmits the amplified signal to the Battler matrix section 600.
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