COMMUNICATION MACHINE CONFIGURATION HAVING LOW INTERMEDIATE FREQUENCY (LowIF) FUNCTION

摘要

PROBLEM TO BE SOLVED: To overcome the problem wherein a transmission station generation oscillator and a reception station generation oscillator used for a transmitter require different oscillators by different oscillation frequencies in a communication apparatus using a Low IF system for a communication system in a communication apparatus having an OFDM modulation/demodulation function, and each local oscillation oscillator needs to be shielded to reduce the interference noise of each oscillator to be generated. SOLUTION: The configuration of transmission and reception local oscillators is shared by using a transmission signal that is modulated by a Low IF frequency in advance and using an image rejection configuration as the configuration of the modulator of a transmitter.