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

IPC: H03G3/30 ,  H03F3/21 ,  H03F3/193

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.

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

IPC: H04B1/06 ,  H03G3/30 ,  H03F3/21 ,  H03F3/193

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.