| 摘要 |
<P>PROBLEM TO BE SOLVED: To flatten the frequency response characteristic of modulation while responding to a request for narrower frequency dedication. <P>SOLUTION: The radio transmitter 100 includes a signal processing circuit 118 which causes a modulated signal to be separated into two systems, a VCO 124 which constitutes a PLL loop and modulates a fundamental wave determined by the PLL loop according to a voltage of one modulated signal in the two systems, and a PLL circuit 128 which constitutes the PLL loop and modulates the fundamental wave determined by the PLL loop by changing a frequency division ratio according to the other modulated signal in the two systems. <P>COPYRIGHT: (C)2012,JPO&INPIT |
