MULTI-FREQUENCY ALLOCATION APPARATUS OF WIRELESS UPPER CONVERTER IN BASE STATION FOR MOBILE TELECOMMUNICATION

摘要

PURPOSE: A multi-frequency allocation apparatus of a wireless upper converter is provided to improve the integrity of hardware and to increase allocation capacity in a base station for mobile telecommunication. CONSTITUTION: The apparatus comprises plural synthesizers(21-22), plural saw-wave filters(24-26), plural frequency allocation synthesizers(27-29), a multiplexer(30) and a band-pass filter(31). The synthesizers(21-22) synthesize a middle frequency signal inputted and a local signal. The saw-wave filters(24-26) perform saw-wave filtering to each output from the synthesizers(21-22). The frequency allocation synthesizers(27-29) convert frequency of outputs from the saw-wave filters(24-26) into frequency of each allocation by adding the frequency allocation local signals. The multiplexer(30) multiplexes outputs of the frequency allocation synthesizers(27-29) according to each frequency allocation. The band-pass filter(31) performs band-pass filtering and outputs a radio signal.