| 摘要 |
<p>A reception IC comprising a received-signal-selecting circuit (15) for selecting one of a plurality of received signals with reception bands different from each other, a frequency dividing circuit (42,43) for dividing the frequency of an oscillation signal (S41) supplied thereto and outputting a plurality of divided-frequency signals (SHA,SHB,SLA,SLB) having frequencies different from each other, a divided-frequency-signal-selecting circuit (44A,44B) for selecting one of the divided-frequency signals output by the frequency dividing circuit (42,43) as a local-oscillation signal, and a mixer circuit (31A,31B) for being input the local-oscillation signal output by the divided-frequency-signal-selecting circuit (44A,44B) and the received signal selected by the received-signal-selecting circuit (15), converting the frequency of the received signal and outputting the received signal with the converted frequency as an intermediate-frequency signal (SIFA,SIFB), wherein the received-signal-selecting circuit (15) selects one of the received signals for a selected reception band, the divided-frequency-signal-selecting circuit (44A,44B) selects one of the divided-frequency signals for the selected reception band, and by changing the frequency of the local oscillation signal for each selected reception band, the frequency of the received signal is changed. <IMAGE></p> |
