| 摘要 |
A radio communication apparatus that transmits and receives a signal via an antenna duplexer, the apparatus that includes a dividing unit that divides part of a transmitting signal to be transmitted via the antenna duplexer. Also included is a conversion unit that converts a receiving signal of a first frequency band received via the antenna duplexer into a second frequency band lower than the first frequency band. In addition, the apparatus includes an extraction unit converting a noise component of the first frequency band included in the transmitting signal divided by the dividing unit into the second frequency band and extracting the noise component. Moreover, the apparatus includes an inversion unit that inverts the phase of the noise component extracted by the extraction unit. Also included is a combining unit that combines the receiving signal converted by the conversion unit and the noise component inverted by the inversion unit.
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