Patent ID: 6324385
Filing Date: 2001-11-27
Classification: H03D,H03L,H04B

Abstract:
A transmitting and receiving apparatus, comprising:carrier wave generating means for generating a reception carrier wave of which a frequency agrees with a reception frequency, generating a first transmission carrier wave of which a frequency is equivalent to 2N (N is a natural number) times of a difference value between the reception frequency and a transmission frequency, and generating a second transmission carrier wave of which a frequency is equivalent to a difference value between the frequency of the first transmission carrier wave and the reception frequency;receiving means for mixing the reception carrier wave generated by the carrier wave generating means with a reception wave and outputting a reception signal;modulating means for de-multiplying by 2N the frequency of the first transmission carrier wave generated by the carrier wave generating means, mixing the first transmission carrier wave, of which the frequency is de-multiplied by 2N, with a transmission signal, and outputting a modulated wave; andtransmitting means for mixing the second transmission carrier wave generated by the carrier wave generating means with the modulated wave output from the modulating means, and outputting a transmission wave.