MUMBAI, India, Sept. 5 -- Intellectual Property India has published a patent application (202347055471 A) filed by International Business Machines Corporation, Armonk, U.S.A., on Aug. 18, 2023, for 'automatic image rejection calibration for radar systems using quadrature transceivers.'
Inventor(s) include Tzadok, Asaf.
The application for the patent was published on Sept. 5, under issue no. 36/2025.
According to the abstract released by the Intellectual Property India: "A method of automatic image rejection and monitoring of a frequency modulated continuous-wave (FMCW) radar system, includes generating a quadrature FMCW signal comprising an in-phase signal and a quadrature signal by a dual output FMCW signal generator (102). The in-phase signal and the quadrature signal are transmitted. A radar signal comprising a response in-phase and quadrature signal is received in response to the transmitted in-phase signal and the quadrature signal. The response in-phase and quadrature signals are provided to an analog to digital converter (ADC (130)). An in-phase beat signal (Beat-I) and a quadrature beat signal (Beat-Q) are extracted from the ADC (130), based on a received windowing signal. A relative phase and/or amplitude adjustment is generated by providing a phase calibration variable (? t) and/or an amplitude calibration variable (A t) as input to the dual output FMCW signal generator (102), based on a correlation between the Beat-I and the Beat-Q."
The patent application was internationally filed on Feb. 17, 2022, under International application No.PCT/IB2022/051420.
Disclaimer: Curated by HT Syndication.
