Patent ID: 6112069
Filing Date: 2000-08-29
Classification: H03D,H04B

Abstract:
A radio receiver in an analog frequency modulation type radio communication system including a receiver and a transmitter, said radio receiver comprising:first means for down-converting in frequency an electrical signal representative of a modulated, high-frequency signal received by the radio receiver, said first down-converting means for mixing the modulated, high-frequency signal received by the radio receiver and a predetermined local oscillating signal, to generate an intermediate frequency signal;means for modulating said predetermined local oscillating signal by an aural signal transmitted from the transmitter and generating a mixing signal for down-mixing the electrical signal representative of the modulated, high-frequency signal, to apply the mixing signal to said first down-converting means;second means for down-converting in frequency the intermediate frequency signal generated from said first down-converting means into a baseband signal, to generate a down-converted baseband signal; andmeans for converting the down-converted baseband signal into a demodulated signal representative of the modulated, high-frequency signal received by the radio receiver.