DUAL DIRECTIONAL TELECOMMUNICATION DEVICE CAPABLE OF USING AMPLITUDE MODULATION AND FREQUENCY MODULATION BASED ON TRANSMISSION DIRECTION OF TELECOMMUNICATION SYSTEM

摘要

PURPOSE: A dual directional telecommunication device capable of using an amplitude modulation(AM) and a frequency modulation(FM) is provided to simultaneously obtain a signal transmitting frequency band and a signal receiving frequency band based on the transmission direction of a telecommunication system. CONSTITUTION: A dual directional telecommunication device comprises the first transmission block including an AM section(31) which modulates the inputted signal and transmits the signal to the second transmission block and an FM demodulating section(32) for demodulating the FM signal inputted from the second transmission block. The second transmission block including an FM section(33) which modulates the inputted signal and transmits the signal to the first transmission block and an AM demodulating section(34) for demodulating the AM signal inputted from the first second transmission block.