| 摘要 |
PURPOSE:To reduce the number of switches and the passing loss, and decrease the electric consumption, by providing the output of a two-wave common amplifier to a two-wave branching filter, providing one output of the two-wave branching filter to the existing apparatuses, respectively, and providing the other output to the auxiliary apparatus which is used in common by plural channels. CONSTITUTION:Carriers f1, f2 are amplified by the two-wave common amplifier 1 and are provided to the distributor 2, and the carriers f1, f2 from the distributor 2 are provided to the two-wave branching filters 20, 21. The carrier f1 and the carrier f2 of one output of said two-wave branching filters 20, 21 are provided to the existing apparatuses 8, 9 for each channel, and are sent out as carrier f1 or f2, respectively. Also, the carrier f2 or f1 of the other output of the two-wave branching filters 20, 21 is provided to the switch 7, and it is provided to the auxiliary apparatus 10 which is used in common by plural channels, by switching said switch 7, so that the carrier f1 or f2 can be sent out. And, the number of switches is decreased, the passing loss is reduced by making the amplifier, etc. unnecessary, and the electric power consumption of the whole system is reduced. |
