| 摘要 |
PURPOSE:To prevent mutual interference due to a direct wave from a base station and re-radiated wave from a repeater by providing separately amplifiers for control channel and talking channel and shifting the reception channel and transmission channel in the amplifier for control channel. CONSTITUTION:A radio wave from a base station received by a counter base station antenna 1 is branched by an antenna multicoupler 3 and led to a two- distributer 5. The distributed signal is subject to channel conversion and amplification for a signal of the control channel only by an outgoing control channel amplifier 7 and led to a two-combiner 11. The radio wave of the control channel and lots of talking channels combined by the combiner 11 is radiated again from a counter mobile station antenna 2 through an antenna multicoupler 4. On the other hand, the radio wave from a mobile station received by the antenna 2 is branched by the antenna multicoupler 4 and radiated gain from the antenna 1 similarly in the case of the said outgoing relaying.
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