公开(公告)号：US11199422B2

公开(公告)日：2021-12-14

申请号：US17125599

申请日：2020-12-17

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Matteo Quartiroli ,  Alessandro Mecchia ,  Paolo Pesenti ,  Stefano Facchinetti ,  Andrea Donadel

IPC: G01C25/00 ,  G01C19/5776 ,  H04L27/22

Abstract: A demodulator for demodulating the in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value and a temperature sensor that performs a plurality of temperature sensings. A compensating stage generates for each temperature sensed a corresponding first sample on the basis of the difference between the sensed temperature and a calibration temperature and a compensation function indicative of a relationship existing between the phase of the input signal and the temperature. A combination stage generates a plurality of second samples, each second sample being a function of the phase calibration value and a corresponding first sample. A generating stage generates a demodulating signal having a phase which depends on the second samples and a demodulating stage demodulates the input signal by means of the demodulating signal.

公开(公告)号：US10900805B2

公开(公告)日：2021-01-26

申请号：US15919882

申请日：2018-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Matteo Quartiroli ,  Alessandro Mecchia ,  Paolo Pesenti ,  Stefano Facchinetti ,  Andrea Donadel

IPC: G01C25/00 ,  G01C19/5776 ,  H04L27/22

Abstract: A demodulator for demodulating the in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value and a temperature sensor that performs a plurality of temperature sensings. A compensating stage generates for each temperature sensed a corresponding first sample on the basis of the difference between the sensed temperature and a calibration temperature and a compensation function indicative of a relationship existing between the phase of the input signal and the temperature. A combination stage generates a plurality of second samples, each second sample being a function of the phase calibration value and a corresponding first sample. A generating stage generates a demodulating signal having a phase which depends on the second samples and a demodulating stage demodulates the input signal by means of the demodulating signal.

公开(公告)号：US20180274924A1

公开(公告)日：2018-09-27

申请号：US15919874

申请日：2018-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Mecchia ,  Matteo Quartiroli ,  Paolo Pesenti

IPC: G01C19/5776 ,  G01C19/5712

CPC classification number: G01C19/5776 ,  B81B7/00 ,  B81B7/008 ,  B81B2201/0242 ,  G01C19/5712 ,  H04L27/3863

Abstract: A demodulator demodulates an in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value having an integer part and a fractional part. A noise-shaping modulator generates a succession of quantized values of integer type, the quantized values having a mean equal to the phase calibration value. A generating stage generates a demodulating signal phase locked with the input signal, the demodulating signal having a phase which depends linearly on the quantized values. A demodulating stage demodulates the input signal by means of the demodulating signal.

公开(公告)号：US12267078B2

公开(公告)日：2025-04-01

申请号：US18352581

申请日：2023-07-14

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Matteo Quartiroli ,  Alessandro Mecchia ,  Paolo Pesenti

IPC: H03L7/081 ,  H03L7/099

Abstract: A device includes a local oscillator, an all-digital phase-locked loop, a digital signal generator, sampling circuitry, and an interface. The local oscillator generates a local clock signal. The all-digital phase locked loop generates a sampling control signal. The ADPLL includes a phase-error detector, a digital filter and a sigma-delta modulator. The phase detector generates a phase error signal based on a loop clock signal and a received reference signal. The digital filter generates a signal indicative of a frequency ratio between a frequency of the reference clock signal and the local clock frequency based on the phase error signal. The sigma-delta modulator generates a modulated signal based on the signal indicative of the frequency ratio. The sampling control signal is based on the modulated signal. The sampling circuitry samples digital signals generated by the digital signal generator at a sampling frequency, which is a function of the sampling control signal.

公开(公告)号：US20180274941A1

公开(公告)日：2018-09-27

申请号：US15919882

申请日：2018-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Matteo Quartiroli ,  Alessandro Mecchia ,  Paolo Pesenti ,  Stefano Facchinetti ,  Andrea Donadel

IPC: G01C25/00 ,  G01C19/5776

CPC classification number: G01C25/005 ,  G01C19/5776

Abstract: A demodulator for demodulating the in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value and a temperature sensor that performs a plurality of temperature sensings. A compensating stage generates for each temperature sensed a corresponding first sample on the basis of the difference between the sensed temperature and a calibration temperature and a compensation function indicative of a relationship existing between the phase of the input signal and the temperature. A combination stage generates a plurality of second samples, each second sample being a function of the phase calibration value and a corresponding first sample. A generating stage generates a demodulating signal having a phase which depends on the second samples and a demodulating stage demodulates the input signal by means of the demodulating signal.

公开(公告)号：US20210102822A1

公开(公告)日：2021-04-08

申请号：US17125599

申请日：2020-12-17

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Matteo Quartiroli ,  Alessandro Mecchia ,  Paolo Pesenti ,  Stefano Facchinetti ,  Andrea Donadel

IPC: G01C25/00 ,  G01C19/5776 ,  H04L27/22

Abstract: A demodulator for demodulating the in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value and a temperature sensor that performs a plurality of temperature sensings. A compensating stage generates for each temperature sensed a corresponding first sample on the basis of the difference between the sensed temperature and a calibration temperature and a compensation function indicative of a relationship existing between the phase of the input signal and the temperature. A combination stage generates a plurality of second samples, each second sample being a function of the phase calibration value and a corresponding first sample. A generating stage generates a demodulating signal having a phase which depends on the second samples and a demodulating stage demodulates the input signal by means of the demodulating signal.

公开(公告)号：US10648813B2

公开(公告)日：2020-05-12

申请号：US15919874

申请日：2018-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Mecchia ,  Matteo Quartiroli ,  Paolo Pesenti

IPC: G01C19/5776 ,  G01C19/5712 ,  H04L27/38 ,  B81B7/00

Abstract: A demodulator demodulates an in-phase component of an input signal which is in-phase and quadrature modulated. The demodulator includes a register storing a phase calibration value having an integer part and a fractional part. A noise-shaping modulator generates a succession of quantized values of integer type, the quantized values having a mean equal to the phase calibration value. A generating stage generates a demodulating signal phase locked with the input signal, the demodulating signal having a phase which depends linearly on the quantized values. A demodulating stage demodulates the input signal by means of the demodulating signal.