Phase locked loop switching in a communication system
AssigneeIntel IP Corporation
InventorsRoy AMEL, Eran SEGEV, Shahar GROSS
Life of this patent
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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.
Claims20
An apparatus comprising:
- 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 to determine whether to switch from using the first PLL to demodulate the first WLAN signal to using a second PLL to demodulate the first WLAN signal;
- a selection circuit coupled to the first PLL and the second PLL, the selection circuit being configured to switch from the first PLL to the second PLL based on the determination;
- and
- the baseband processor configured to receive additional digital samples of the first WLAN signal demodulated with the second PLL.
A system comprising:
- a mixer to receive a first signal from an antenna;
- a processing component coupled to the mixer;
- a selection circuit coupled to the processing component and to the mixer;
- a first means for demodulating the signal, wherein the first means is coupled to the selection circuit;
- and
- a second means for demodulating the signal, the second means coupled to the selection circuit, wherein the processing component is configured to:
- receive the first signal from the mixer;
- and
- in response to the receiving the first signal, send a first signal to the selection circuit to disconnect the first means from the mixer and connect the second means to the mixer.
A method comprising:
- receiving, by a baseband processor, digital samples of a first wireless local area network (WLAN) signal demodulated with a first phase locked loop (PLL);
- determining, by the baseband processor, whether to switch from using the first PLL to demodulate the first WLAN signal to using a second PLL to demodulate the first WLAN signal;
- selecting, by the baseband processor, the second PLL to demodulate additional digital samples of the first WLAN signal based on a determination to switch from using the first PLL to the second PLL;
- and
- receiving, by the baseband processor, the additional digital samples of the first WLAN signal demodulated with the second PLL.
Dependencies are inferred from the claim text.