Invention Grant
- Patent Title: Interference-canceling RF receiver circuit, corresponding system, radar sensor system, vehicle and method
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Application No.: US16795977Application Date: 2020-02-20
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Publication No.: US11442142B2Publication Date: 2022-09-13
- Inventor: Giuseppe Papotto , Egidio Ragonese , Claudio Nocera , Alessandro Finocchiaro , Giuseppe Palmisano
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Crowe & Dunlevy
- Priority: IT102019000002907 20190228
- Main IPC: G01S7/03
- IPC: G01S7/03 ; H03F1/56 ; G01S7/02 ; H03D7/14 ; H03F3/19

Abstract:
An input receives a radio frequency (RF) signal having an interfering component superimposed thereon. The RF signal is mixed with a local oscillator (LO) signal and down-converted to an intermediate frequency (IF) to generate a mixed signal which includes a frequency down-converted interfering component. The mixed signal is amplified by an amplifier to generate an output signal. A feedback loop processes the output signal to generate a correction signal for cancelling the frequency down-converted interfering component at the input of the amplifier. The feedback loop includes a low-pass filter and a amplification circuit which outputs the correction signal.
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