Silicon Laboratories Inc.

Robert Mark Gorday

Guner Arslan

Yan Zhou

Hendricus De Ruijter

Pascal Blouin

Marc Leroux

Yi Shen Yeh

Xushuai Qu

A wireless communications device includes a receiver having a phase detector configured to extract frequency offset and provide a corresponding error signal generated based on a baseband version of a received radio frequency signal and an expected transmitted data signal. The receiver has a phase-locked loop configured to generate an error correction signal based on a phase of the error signal and a predicted instantaneous phase of the error signal. The receiver has a correction circuit configured to provide a corrected baseband version of the received radio frequency signal based on the baseband version of the received radio frequency signal and the error correction signal. The receiver may have a re-encoding-based processing circuit configured to provide the expected transmitted data signal based on a preliminarily decoded symbol.

Kalman filter based phase-locked loop with re-encoding based phase detector

A cluster correlator may be configured with: a first stage comprising a set of first correlators to correlate samples of an input signal with a first predetermined pattern and output an output sample, the set of first correlators to output a sample cluster corresponding to the output sample of the set of first correlators during a switching cycle of the first stage; a filter coupled to an output of the first stage to receive the sample cluster and to produce a processed output sample based on the sample cluster; and a second stage comprising at least one second correlator to receive a processed output sample from the filter and correlate the processed output sample with a second predetermined pattern, and output one or more correlation outputs during a switching cycle of the second stage.

Cluster correlator for a demodulator

In one embodiment, an apparatus includes: a low noise amplifier (LNA) to receive and amplify a radio frequency (RF) signal, the LNA having a first controllable gain; a mixer to downconvert the RF signal to a second frequency signal; a programmable gain amplifier (PGA) coupled to the mixer to amplify the second frequency signal, the PGA having a second controllable gain; a digitizer to digitize the second frequency signal to a digitized signal; a demodulator coupled to the digitizer to demodulate the digitized signal; an automatic gain control (AGC) circuit to control one or more of the first controllable gain and the second controllable gain; and an AGC settling circuit to cause the demodulator to begin operation in response to determining that the AGC circuit has settled.

Apparatus for determining when an automatic gain control circuit has settled

A wireless device may include: a radio frequency (RF) front end circuit to receive and process an RF signal; a mixer to downconvert the RF signal to a second frequency signal; a digitizer to digitize the second frequency signal; a channel filter to channel filter the digitized signal; a selection circuit having a first input coupled to the channel filter and a plurality of outputs each to couple to one of a plurality of demodulators; and the plurality of demodulators coupled to the selection circuit. The selection circuit may route the channel filtered digitized signal to a first demodulator of the plurality of demodulators based on a first configuration setting. The wireless device may also include a non-volatile storage with a configuration file including the first configuration setting. The configuration file may be automatically generated by a hardware configurator in response to a plurality of user input parameters.

Growing community of inventors

Austin, TX, United States of America

Robert Mark Gorday