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公开(公告)号：US20240248169A1
公开(公告)日：2024-07-25
申请号：US18157511
申请日：2023-01-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zeshan Ahmad , Mayank Kumar Singh
CPC classification number: G01S7/038 , G01S7/354 , H03F3/245 , G01S13/931 , H03F2200/165 , H03F2200/171 , H03F2200/294 , H03F2200/451
Abstract: In an embodiment, a system includes: an analog-to-digital converter (ADC); a transmitter path; a receiver path including a first amplifier including: an output coupled to the ADC, and a first high-pass filter; and a controller coupled to the transmitter path and to the receiver path, where the controller is configured to: cause a corner frequency of the first high-pass filter to increase from a first value to a second value, simultaneously or after causing the corner frequency of the first high-pass filter to increase, cause the transmitter path to be enabled, and after a first signal begins transmission in the enabled transmitter path, and during transmission of the first signal in the enabled transmitter path, cause the corner frequency of the first high-pass filter to decrease from the second value to the first value.
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公开(公告)号：US12021552B2
公开(公告)日：2024-06-25
申请号：US17566047
申请日：2021-12-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Karthik Subburaj , Pranav Sinha , Mayank Kumar Singh , Rittu Sachdev , Karan Singh Bhatia , Shailesh Joshi , Indu Prathapan
CPC classification number: H04B1/0075 , H04B1/04 , H04B1/1036 , H04B1/69 , H04B2001/0408 , H04B2001/1045 , H04B2001/1063 , H04B2001/6912
Abstract: A device comprises a digital ramp generator, an oscillator, a power amplifier, a low-noise amplifier (LNA), a mixer, and an intermediate frequency amplifier (IFA). The oscillator generates a chirp signal based on an output from the digital ramp generator. The power amplifier receives the chirp signal and outputs an amplified chirp signal to a transmitter antenna. The LNA receives a reflected chirp signal from a receiver antenna. The mixer receives output of the LNA and combines it with the chirp signal from the oscillator. The IFA receives the mixer output signal and includes a configurable high-pass filter, which has a first cutoff frequency during a first portion of the chirp signal and a second cutoff frequency during a second portion of the chirp signal. In some implementations, the first cutoff frequency is chosen based on a frequency of a blocker signal introduced by couplings between the transmitter and receiver antennas.
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公开(公告)号：US20240250646A1
公开(公告)日：2024-07-25
申请号：US18157556
申请日：2023-01-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zeshan Ahmad , Mayank Kumar Singh
CPC classification number: H03F3/087 , H03F3/45475 , H04B1/16
Abstract: In an embodiment, a system includes: an analog-to-digital converter (ADC); a receiver path including a transimpedance amplifier having an output coupled to the ADC; and a controller coupled to the receiver path and configured to, upon detection of a jamming event of the receiver path, cause an increase in a transconductance of the transimpedance amplifier from a first transconductance value to a second transconductance value.
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