| 摘要 |
PURPOSE:To make a distribution switch highly reliable and effective use of power, by installing power amplifiers whose power consumption becomes zero or is reduced when no input signal exists to every transmitting antennas and arranging the distribution switch to the input side of the amplifier. CONSTITUTION:Power amplifiers 3-3 of a type whose power consumption is zero or reduced when no input signal exists are installed to each of plural transmitting beam antennas 5-5 for exclusive use. Moreover, a distribution switch 4 is provided between the input of the amplifiers 3-3 and the output of a receiver 2 connected to a receiving antenna 1. Then, in accordance with the destination beam of received burst signals, the connected condition of the switch 4 is controlled and burst signals are simultaneously transmitted from the antennas 5-5 whose number is less than the total beam number. Therefore, the switch 4 is made highly reliable and the power consumption can be economized. |
