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公开(公告)号：US20220352861A1
公开(公告)日：2022-11-03
申请号：US17243760
申请日：2021-04-29
Applicant: Silicon Laboratories Inc.
Inventor： Robert M. Gorday , Guner Arslan , Marc Leroux , Pascal Blouin
Abstract: 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.
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公开(公告)号：US20240292331A1
公开(公告)日：2024-08-29
申请号：US18175623
申请日：2023-02-28
Applicant: Silicon Laboratories Inc.
Inventor： Yi Shen Yeh , Yan Zhou , Marc Leroux
CPC classification number: H04W52/0229 , H04L27/02
Abstract: In an embodiment, an apparatus includes a baseband processor comprising: a packet generation circuit to generate a wake-up packet comprising information to cause a first receiver to trigger a wake-up of a second receiver; an encoder to encode the wake-up packet with Manchester encoding to output Manchester encoded on-off keying (MOOK) data; and a modulator coupled to the encoder to receive random data and modulate the random data. This modulated random data may be amplitude modulated with the MOOK data to realize a radio frequency (RF) signal comprising the MOOK data that is to be transmitted to one or more receivers.
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公开(公告)号：US20240291581A1
公开(公告)日：2024-08-29
申请号：US18175606
申请日：2023-02-28
Applicant: Silicon Laboratories Inc.
Inventor： Yi Shen Yeh , Yan Zhou , Marc Leroux
CPC classification number: H04J3/0658 , H04W52/0229
Abstract: In one implementation, a method comprises: receiving, in a first radio, a radio frequency (RF) signal and processing the RF signal to provide a bit stream to a digital circuit of the first radio; enabling a first correlator of the first radio to detect at least a first portion of a sync word of a wake-up packet of the bit stream, and thereafter enabling a second correlator of the first radio to detect at least a second portion of the sync word; enabling an averager circuit to detect another portion of the sync word; and in response to detection of the sync word, disabling the first and second correlators and maintaining the averager circuit enabled.
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公开(公告)号：US11804811B2
公开(公告)日：2023-10-31
申请号：US17243760
申请日：2021-04-29
Applicant: Silicon Laboratories Inc.
Inventor： Robert M. Gorday , Guner Arslan , Marc Leroux , Pascal Blouin
CPC classification number: H03G3/3036 , H03F3/193 , H03F3/21 , H03G3/3089 , H03F2200/294
Abstract: 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.
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