Texas Instruments Corporation

Shankar Narayanamoorthy

Karthik Subburaj

Karthik Ramasubramanian

Shailesh Joshi

Dheeraj Kumar Shetty

Anand Gadiyar

Sreekiran Samala

Anjan Prasad Eswaran

Methods, apparatus, systems and articles of manufacture to compensate radar system calibration are disclosed. A radio-frequency (RF) subsystem having a transmit channel, a receive channel, and a loopback path comprising at least a portion of the transmit channel and at least a portion of the receive channel, a loopback measurer to measure a first loopback response of the RF subsystem for a first calibration configuration of the RF subsystem, and to measure a second loopback response of the RF subsystem for a second calibration configuration of the RF subsystem, and a compensator to adjust at least one of a transmit programmable shifter or a digital front end based on a difference between the first loopback response and the second loopback response to compensate for a loopback response change when the RF subsystem is changed from the first calibration configuration to the second calibration configuration.

Methods and apparatus to compensate for radar system calibration changes

A testing device for FMCW radar includes an input for receiving a chirp signal generated by the radar. An IQ down-converter coupled to the input down-converts the chirp signal. A digitizer extracts digitized IQ signals from the down-converted chirp signal. A processor coupled to the digitizer determines at least one of frequency linearity and phase noise of the chirp signal.

Circuits and methods for determining chirp signal linearity and phase noise of a FMCW radar

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Bengaluru, India

Shankar Narayanamoorthy