Patent ID: 6721551
Filing Date: 2004-04-13
Classification: H03D,H03L,H04B

Abstract:
A transmitting and receiving apparatus, comprising:carrier wave generating means for generating a reception carrier wave having a frequency equivalent to Â½ of a reception frequency, generating a first transmission carrier wave having a frequency equivalent to 8 times a difference value between the reception frequency and a transmission frequency, and generating a second transmission carrier wave having a frequency equivalent to a difference value between twice the reception frequency and the transmission 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 4 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 4, with a transmission signal, and outputting a modulated wave; and transmitting 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.