Intel Corporation
Phase locked loop switching in a communication system

Abstract:

An apparatus include a baseband processor configured to receive digital samples of a first wireless local area network (WLAN) signal demodulated with a first phase locked loop (PLL). The baseband processor is configured to determine whether to switch from using the first PLL to demodulate the first WLAN signal to a second PLL to demodulate the first WLAN signal. The apparatus further includes a selection circuit coupled to the first PLL and the second PLL. The selection switch is configured to switch from the first PLL to the second PLL based on the determination. The baseband processor is configured to receive additional digital samples of the first WLAN signal demodulated with the second PLL.