公开(公告)号：US20230384459A1

公开(公告)日：2023-11-30

申请号：US18312157

申请日：2023-05-04

Applicant: STMicroelectronics S.r.I.

Inventor： Gaetano Rivela

IPC: G01S19/24 ,  G01S19/04

CPC classification number: G01S19/243 ,  G01S19/04

Abstract: In accordance with an embodiment, a system includes a phase-locked loop (PLL) configured to provide a first local oscillator (LO) signal and a voltage-controlled oscillator (VCO) signal; a first quadrature demodulator configured to downconvert global navigation satellite system signals to produce a first intermediate frequency (IF) signal; a first signal processing chain configured to pass the first IF signal; a second signal processing chain comprising a first frequency divider configured to produce a second LO signal based on the first LO signal, and a second quadrature demodulator configured to convert the first IF signal to a second IF signal using the second LO signal; and a third signal processing chain comprising a second frequency divider configured to produce a third LO signal based on the VCO signal, and a third quadrature demodulator configured to convert the first IF signal to a third IF signal using the third LO signal.