TRANSCEIVER TRANSMISSION AND RECEIVING TERMINATION APPARATUS FOR BASE STATION OF TOWER-TOP METHOD

摘要

PURPOSE: A transceiver transmission and receiving termination apparatus for a base station of tower-top method is provided to install a MMIC(Microwave Monolithic Integrated Circuit) amplifier and a variable attenuator at an end portion of a transceiver and a control circuit in order to control the above elements. Thereby, the size of a base station apparatus is minimized. CONSTITUTION: An amplifier(110) installed at an end portion of a transceiver(100) amplifies a transmission channel signal which is up-converted by a frequency mixer(21) and a bandwidth filter(22) by a set gain. A temperature detector(130) detects a temperature of the amplifier(110). A directional coupler(140) divides a transmissions signal output from the amplifier(110). A voltage variable attenuator(120) attenuates a transmission signal divided by the directional coupler(140) to a level corresponding to the input level of an outdoor apparatus(200).