RADIO TRANSCEIVER WITHIN RADIO INTERFACE UNIT OF WIRELESS LOCAL LOOP SYSTEM

摘要

PURPOSE: A radio transceiver within a radio interface unit of a wireless local loop is provided to transmit and receive an RF signal at 2GHz more frequency band by using a radio interface between a base station and a radio interface unit. CONSTITUTION: A radio transceiver within a radio interface unit of a wireless local loop comprises an antenna duplexer(10), a radio receiver(20), a radio transmitter(40), and a local signal generator(50). The antenna duplexer divides signals into a transmission signal and a reception signal to perform a radio transmission and reception to a base station. The radio receiver converts an RF signal from the base station to an IF signal. The radio transmitter converts an RF signal from a subscriber to an IF signal and transmits the IF signal through the antenna duplexer to the base station. The local signal generator generates each local signal necessary for modulating and demodulating the IF and RF signals.