| 摘要 |
PROBLEM TO BE SOLVED: To provide a module for mobile communication terminals, which is small-sized, improves reliability and is capable of dealing with a plurality of bands, and a mobile communication terminal employing the same. SOLUTION: In order to ensure a suppression degree of a transmission signal or reception band noise at a transmission side, the transmission signal or the reception band noise at the transmission side is canceled using a feedforward technique. In such a case, in order to implement signal cancellation over a wide band from the transmission signal to a reception band, in addition to a gain and phase adjusting function, a delay adjusting function is also used for a feedforward loop. Furthermore, in order to stably cancel an interference signal, the gain, phase, and delay of the loop are controlled using a reception S/N or CQI signal. Further, in order to achieve low power consumption, the feedforward loop can be turned on/off in accordance with a level of the transmission signal. COPYRIGHT: (C)2011,JPO&INPIT
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