| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the power consumption of a transmission circuit and suppress the degradation of reception characteristic of a reception circuit in an FDD system. <P>SOLUTION: The radio communication terminal 100 includes a transmission circuit 120 to transmit a transmission signal through duplexer 110, a reception circuit 170 to receive a reception signal through the duplexer 110, and a controller 180 to control the transmission circuit 120 on the basis of the received SNR. The transmission circuit 120 includes an IF band circuit 140 that processes transmission signals in an intermediate frequency band in either of the normal mode or low power-consumption mode that is smaller in power consumption and out-band attenuation than the normal mode. The controller 180 operates the IF band circuit 140 in the low power-consumption mode when the received SNR exceeds a necessary SNR, and it operates the IF band circuit 140 in the normal mode when the received SNR is below the necessary SNR. <P>COPYRIGHT: (C)2010,JPO&INPIT |
