| 摘要 |
<P>PROBLEM TO BE SOLVED: To supply a reference clock with no spurious to a baseband while sharing the reference clock signal of another system by using a fixed frequency divider that supplies a signal with no spurious. <P>SOLUTION: A reception apparatus includes: a voltage controlled oscillator 101 which outputs a local signal; a synchronizing unit 107 which inputs the local signal and a reference clock signal, switches a plurality of numbers of frequency divisions, for the local signal, in a time division manner by a fractional frequency divider 102, compares the phase of a signal frequency-divided with the average number of frequency divisions with that of the reference clock signal by a phase comparator 104, and controls the voltage controlled oscillator 101 so as to synchronize the compared phases; and a fixed frequency divider 108 which frequency-divides and outputs the local signal with the fixed number of frequency divisions. <P>COPYRIGHT: (C)2008,JPO&INPIT |
