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公开(公告)号：US20250138148A1
公开(公告)日：2025-05-01
申请号：US18499181
申请日：2023-10-31
Applicant: Texas Instruments Incorporated
Inventor： Karthik Subburaj , Piyush Soni , Vashishth Dudhia , Ryan Smith , Kavithaa Rajagopalan , Karthik Ramasubramanian , Shankar Ram Narayana Moorthy , Indu Prathapan , Samala Sreekiran
Abstract: In described examples, a frequency modulated continuous wave (FMCW) radar includes a reference clock, a phase locked loop (PLL), a pulse generator, a counter, a chirp ramp control circuit, and a synchronization state machine. The reference clock generates a reference clock signal. The PLL generates a feedback clock signal in response to the reference clock signal, and an output signal in response to the feedback clock signal. The pulse generator outputs a chirp start pulse in response to the reference clock signal. The counter increments a count in response to the feedback clock signal. The synchronization state machine provides a chirp ramp signal to a chirp ramp control circuit in response to the reference clock signal, the feedback clock signal, the chirp start pulse, and the count. The chirp ramp control circuit causes the PLL to ramp a frequency of the output signal in response to the chirp ramp signal.
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Patent Agency Ranking
公开(公告)号：US11054500B2
公开(公告)日：2021-07-06
申请号：US16057152
申请日：2018-08-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Samala Sreekiran , Krishnanshu Dandu , Ross Kulak
Abstract: A radar system includes a transmitter including a power amplifier (PA) for amplifying a local oscillator (LO) signal, to generate an amplified signal. The radar system also includes a receiver including an IQ generator for generating an I signal based on the LO signal and for generating a Q signal based on the LO signal and a low noise amplifier (LNA) for amplifying a looped back signal, to generate a receiver signal. The receiver also includes a first mixer for mixing the receiver signal and the I signal, to generate a baseband I signal and a second mixer for mixing the receiver signal and the Q signal, to generate a baseband Q signal. Additionally, the radar system includes a waveguide loopback for guiding the amplified signal from the transmitter to the receiver as the looped back signal.
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公开(公告)号：US11555883B2
公开(公告)日：2023-01-17
申请号：US17331419
申请日：2021-05-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Samala Sreekiran , Krishnanshu Dandu , Ross Kulak
Abstract: A radar system includes a transmitter including a power amplifier (PA) for amplifying a local oscillator (LO) signal, to generate an amplified signal. The radar system also includes a receiver including an IQ generator for generating an I signal based on the LO signal and for generating a Q signal based on the LO signal and a low noise amplifier (LNA) for amplifying a looped back signal, to generate a receiver signal. The receiver also includes a first mixer for mixing the receiver signal and the I signal, to generate a baseband I signal and a second mixer for mixing the receiver signal and the Q signal, to generate a baseband Q signal. Additionally, the radar system includes a waveguide loopback for guiding the amplified signal from the transmitter to the receiver as the looped back signal.
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公开(公告)号：US20190049555A1
公开(公告)日：2019-02-14
申请号：US16057152
申请日：2018-08-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Samala Sreekiran , Krishnanshu Dandu , Ross Kulak
Abstract: A radar system includes a transmitter including a power amplifier (PA) for amplifying a local oscillator (LO) signal, to generate an amplified signal. The radar system also includes a receiver including an IQ generator for generating an I signal based on the LO signal and for generating a Q signal based on the LO signal and a low noise amplifier (LNA) for amplifying a looped back signal, to generate a receiver signal. The receiver also includes a first mixer for mixing the receiver signal and the I signal, to generate a baseband I signal and a second mixer for mixing the receiver signal and the Q signal, to generate a baseband Q signal. Additionally, the radar system includes a waveguide loopback for guiding the amplified signal from the transmitter to the receiver as the looped back signal.
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公开(公告)号：US12117556B2
公开(公告)日：2024-10-15
申请号：US17360161
申请日：2021-06-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zeshan Ahmad , Samala Sreekiran
IPC: H01L23/528 , G01S7/03 , G01S13/04 , H01L23/522 , H03F3/195
CPC classification number: G01S7/032 , G01S13/04 , H01L23/5227 , H01L23/528 , H03F3/195 , H03F2200/451
Abstract: An integrated circuit includes a passive component having a first metal feature and a second metal feature, the first metal feature and the second metal feature defining an interior area therebetween. The integrated circuit also includes set of spaced metal fill lines extending across the interior area and oriented to carry current orthogonal to current carried by the first metal feature and second metal feature.
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公开(公告)号：US20210286049A1
公开(公告)日：2021-09-16
申请号：US17331419
申请日：2021-05-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Samala Sreekiran , Krishnanshu Dandu , Ross Kulak
Abstract: A radar system includes a transmitter including a power amplifier (PA) for amplifying a local oscillator (LO) signal, to generate an amplified signal. The radar system also includes a receiver including an IQ generator for generating an I signal based on the LO signal and for generating a Q signal based on the LO signal and a low noise amplifier (LNA) for amplifying a looped back signal, to generate a receiver signal. The receiver also includes a first mixer for mixing the receiver signal and the I signal, to generate a baseband I signal and a second mixer for mixing the receiver signal and the Q signal, to generate a baseband Q signal. Additionally, the radar system includes a waveguide loopback for guiding the amplified signal from the transmitter to the receiver as the looped back signal.
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