Patent ID: 8594251
Filing Date: 2013-11-26
Classification: H03J

Abstract:
1. A receiver for using a reference oscillator signal provided by a crystal resonator to support multiple, different functionalities, the receiver comprising: a first phase-locked loop (PLL) configured to provide a first local oscillator signal based on the reference oscillator signal provided by the crystal resonator; a mixer configured to mix a received signal with the first local oscillator signal to provide a frequency-shifted signal; an automatic frequency controller (AFC) configured to estimate a frequency offset of the first local oscillator signal and adjust the first PLL to compensate for the frequency offset; an analog-to-digital converter (ADC) configured to obtain samples of the frequency-shifted signal, using the first local oscillator signal as a sampling clock, and convert the samples into a sequence of discrete values; and a rate adaptor configured to adapt a rate at which the sequence of discrete values is provided in accordance with a rate conversion ratio, wherein the rate conversion ratio is adjusted based on the frequency offset.