Method for fast acquisition in a phase locked loop

Details Method for fast acquisition in a phase locked loop Method for fast acquisition in a phase locked loop

H - Electricity

03

L

H03L 7/08 (2006.01) H03L 7/085 (2006.01)

Patent

CA 2054350

The method of the present invention provides fast fre- quency acquisition in a PLL. The peak voltage for a phase er- ror signal is detected at time tp and a voltage controlled oscilla- tor warp voltage is sampled at tp. The new warp voltage to the voltage controlled oscillator is set to what the warp voltage was at tp. The bandwidth of the loop is then narrowed and the warp voltage is averaged over a number of samples. The warp voltage is then set to the average warp voltage and the loop bandwidth is widened.

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