| 摘要 |
<p>PURPOSE: An apparatus for stabilizing a PLL[Phase Locked Loop]and a method thereof are provided to perform calibration of PLL when a communication device transfers a first operation mode to a second operation mode. CONSTITUTION: A standard PLL(108) provides a target signal. A controller(120) corrects the standard PLL by following the target signal with the standard signal when a communication device transfers a first operation mode to a second operation mode. The controller corrects the standard PLL by controlling a target frequency in a predetermined value. The predetermined value shows the previously known shifting of the target signal which is generated from a transition between the first operation mode and the second operation mode. [Reference numerals] (104) Oscillator; (106) Scaling module; (108) Reference phase-locked loop; (116) Transmitter; (118) Receiver; (120) Controller</p> |
