公开(公告)号：US20230204717A1

公开(公告)日：2023-06-29

申请号：US17862738

申请日：2022-07-12

Applicant: Texas Instruments Incorporated

Inventor： Karthik Subburaj ,  Shankar Narayanamoorthy ,  Karthik Ramasubramanian ,  Anand Gadiyar ,  Dheeraj Kumar Shetty ,  Shailesh Joshi

IPC: G01S7/40

CPC classification number: G01S7/40 ,  G01S7/4021 ,  G01S7/4008

Abstract: 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.

公开(公告)号：US12228680B2

公开(公告)日：2025-02-18

申请号：US17862738

申请日：2022-07-12

Applicant: Texas Instruments Incorporated

Inventor： Karthik Subburaj ,  Shankar Narayanamoorthy ,  Karthik Ramasubramanian ,  Anand Gadiyar ,  Dheeraj Kumar Shetty ,  Shailesh Joshi

IPC: G01S7/40

Abstract: 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.