公开(公告)号：US12066516B2

公开(公告)日：2024-08-20

申请号：US17472679

申请日：2021-09-12

申请人： RichWave Technology Corp.

发明人： Hsiang-Feng Chi

IPC分类号： G01S13/34 ,  G01S7/35 ,  H04B1/44

CPC分类号： G01S13/34 ,  G01S7/352 ,  H04B1/44 ,  G01S7/358 ,  G01S13/343 ,  G01S13/345

摘要： A radar apparatus includes a transmitting analog front-end circuit, a plurality of antenna ports, a switching controller, a switching circuit, and a receiving analog front-end circuit. The transmitting analog front-end circuit generates a transmitting signal according to a carrier wave signal. A frequency of the carrier wave signal changes with time during a frequency sweep period of the carrier wave signal. The antenna ports are respectively configured to receive an echo signal corresponding to the transmitting signal. The switching controller is coupled to the transmitting analog front-end circuit and configured to generate a control signal according to the frequency sweep period of the carrier wave signal. The switching circuit is coupled to the antenna ports and the switching controller, configured to select one of the antenna ports to receive the echo signal according to the control signal, and coupled to the receiving analog front-end circuit.

公开(公告)号：US20240175979A1

公开(公告)日：2024-05-30

申请号：US18504343

申请日：2023-11-08

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Myung Sun SONG ,  Hyung Ju KIM ,  Sung Jin YOO ,  Byung Jang JEONG ,  Seung Keun PARK ,  In Kui CHO

IPC分类号： G01S7/35

CPC分类号： G01S7/358 ,  G01S13/343

摘要： Exemplary embodiments provide a radar apparatus having a plurality of antenna elements and enabling to reduce a number of ADCs as long as being allowable according to a bandwidth of the ADC, reduce a chip area occupied by the ADC and interconnections in an integrated circuit, and prevent a synchronization problem between the ADCs by sampling receive signals of multiple channels at once. Frequencies of local oscillation signals used for downconverting receive signals are set to be different from each other by an amount of an offset frequency, so that each of band-limited receive signals obtained through respective RF paths may occupy a different position on a frequency axis of a frequency domain. Downconverted receive signals are combined into a single signal and converted into a single digital signal stream, and a signal processing of the digital signal stream in a digital domain enables to obtain target data.

公开(公告)号：US11977178B2

公开(公告)日：2024-05-07

申请号：US16816899

申请日：2020-03-12

申请人： UHNDER, INC.

发明人： Monier Maher ,  Marius Goldenberg ,  Chung-Kai Chow ,  Frederick Rush ,  Otto A. Schmid

IPC分类号： G01S7/35 ,  G01S7/40 ,  G01S13/32 ,  G01S13/36 ,  G01S13/931

CPC分类号： G01S7/354 ,  G01S7/40 ,  G01S7/4017 ,  G01S13/325 ,  G01S13/36 ,  G01S7/356 ,  G01S7/358 ,  G01S13/931

摘要： A multi-chip MIMO radar system includes a plurality of transmitters and a plurality of receivers. Each of the pluralities of transmitters and receivers are arranged across a plurality of chips. The multi-chip MIMO radar system is configured to provide an exemplary chip synchronization such that the transmitters and receivers of each chip of the radar system are synchronized with the transmitters and receivers of every other chip of the radar system.

公开(公告)号：US11747436B2

公开(公告)日：2023-09-05

申请号：US17020931

申请日：2020-09-15

申请人： Texas Instruments Incorporated

发明人： Karthik Subburaj ,  Karthik Ramasubramanian ,  Sriram Murali ,  Sreekiran Samala ,  Krishnanshu Dandu

IPC分类号： G01S7/292 ,  G01S13/88 ,  G01S13/00 ,  G01S7/35 ,  G01S13/34 ,  G01S7/03 ,  G01S7/02 ,  G01S7/41 ,  G01S13/04

CPC分类号： G01S7/292 ,  G01S7/023 ,  G01S7/038 ,  G01S7/354 ,  G01S7/414 ,  G01S13/003 ,  G01S13/343 ,  G01S13/88 ,  G01S7/356 ,  G01S7/358 ,  G01S13/04

摘要： A noise-mitigated continuous-wave frequency-modulated radar includes, for example, a transmitter for generating a radar signal, a receiver for receiving a reflected radar signal and comprising a mixer for generating a baseband signal in response to the received radar signal and in response to a local oscillator (LO) signal, and a signal shifter coupled to at least one of the transmitter, LO input of the mixer in the receiver and the baseband signal generated by the mixer. The impact of amplitude noise or phase noise associated with interferers, namely, for example, strong reflections from nearby objects, and electromagnetic coupling from transmit antenna to receive antenna, on the detection of other surrounding objects is reduced by configuring the signal shifter in response to an interferer frequency and phase offset.

公开(公告)号：US12111416B2

公开(公告)日：2024-10-08

申请号：US17526627

申请日：2021-11-15

申请人： Imec vzw

发明人： Marc Bauduin ,  Andre Bourdoux

IPC分类号： G01S7/35 ,  G01S13/32 ,  G01S13/58

CPC分类号： G01S7/354 ,  G01S7/358 ,  G01S13/325 ,  G01S13/58

摘要： A method for facilitating robust radar detection comprises generating a radar signal in a digital domain along at least one transmission path, the radar signal comprises a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation ej·π/K·n, where Lc and M are integers, K is an integer or a non-integer, and n is a discrete time index corresponding to a code rate. The method further comprises generating a process input signal in the digital domain along at least one receiving path from a digitized reflection signal corresponding to the radar signal by multiplying the digitized reflection signal with a progressive phase rotation e−j·π/K·n. In this context, K is defined such that a ratio Lc/2·K is a non-integer, and M is defined such that a ratio Lc·M/2·K is an integer.

公开(公告)号：US12042270B2

公开(公告)日：2024-07-23

申请号：US18231211

申请日：2023-08-07

申请人： Transrobotics, Inc.

发明人： Sayf Alalusi

IPC分类号： A61B5/00 ,  A61B5/0507 ,  A61B5/11 ,  G01S7/41 ,  G01S13/32 ,  G01S13/50 ,  G01S13/87 ,  G01S13/88 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/05 ,  A61B5/08 ,  A61B5/113 ,  A61B5/1455 ,  G01S7/35

CPC分类号： A61B5/1128 ,  A61B5/0035 ,  A61B5/0507 ,  A61B5/11 ,  A61B5/1112 ,  A61B5/1114 ,  A61B5/1117 ,  A61B5/1118 ,  A61B5/7246 ,  A61B5/7278 ,  G01S7/415 ,  G01S13/325 ,  G01S13/50 ,  G01S13/87 ,  G01S13/88 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/02416 ,  A61B5/05 ,  A61B5/0816 ,  A61B5/113 ,  A61B5/1135 ,  A61B5/14551 ,  A61B5/14552 ,  A61B2562/0233 ,  A61B2576/00 ,  G01S7/358

摘要： A sensing system includes a first radar sensing assembly and an analysis system. The first radar sensing assembly measures plural distances to a first target location at different times using radar. The analysis system receives the plural distances from the first radar sensing assembly and quantifies movements of a target object at the first target location at the different times by calculating differences in the plural distances measured by the first radar sensing assembly. The analysis system generates one or more first quantified activity level values indicative of the movements of the target object at the first target location using the differences in the plural distances that are calculated.

公开(公告)号：US11837996B2

公开(公告)日：2023-12-05

申请号：US17585009

申请日：2022-01-26

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Jang Hong Choi ,  Bon Tae Koo ,  Kyung Hwan Park ,  Min Park ,  Seon-Ho Han

IPC分类号： H03D3/24 ,  H03F3/04 ,  H04L27/22 ,  H03D7/00 ,  H03D3/02 ,  G01S7/35 ,  H03K5/00

CPC分类号： H03D3/247 ,  H03D3/02 ,  H03D7/00 ,  H03F3/04 ,  H04L27/22 ,  G01S7/354 ,  G01S7/358 ,  H03K2005/00078 ,  H03K2005/00286

摘要： Disclosed is a phase demodulator, which includes a transmitter that outputs a reference signal to a target, a receiver that receives a target signal generated in response to the reference signal from the target, and a demodulation processor that demodulates the target signal, and the demodulation processor includes a phase controller that outputs a first phase signal based on the reference signal, a phase shifter that delays a phase of the first phase signal to output a first delayed signal, a mixer that outputs a first mixing signal based on the target signal and the first delay signal, and an amplifier that outputs a first feedback signal generated by amplifying the first mixing signal to the phase controller.

公开(公告)号：US20230184885A1

公开(公告)日：2023-06-15

申请号：US17547907

申请日：2021-12-10

申请人： Infineon Technologies AG

发明人： Herbert Knapp ,  Hao Li

IPC分类号： G01S7/35 ,  H03F3/24

CPC分类号： G01S7/35 ,  G01S7/358 ,  H03F3/245 ,  G01S13/325 ,  H03F2200/451

摘要： A method of operating a monolithic microwave integrated circuit (MMIC) in a radar transmitter includes: sending a radio frequency (RF) signal to a power amplifier of the radar transmitter, where the power amplifier is controlled by a termination control signal, where when the termination control signal is de-asserted, the power amplifier is configured to pass the RF signal through the power amplifier for transmission by an RF antenna, where when the termination control signal is asserted, the power amplifier is configured to terminate the RF signal in the power amplifier; transmitting the RF signal by de-asserting the termination control signal; and after de-asserting the termination control signal, disabling transmission of the RF signal by: reducing a power of the RF signal; and asserting the termination control signal.

公开(公告)号：US11650307B2

公开(公告)日：2023-05-16

申请号：US17030720

申请日：2020-09-24

申请人： Cypress Semiconductor Corporation

发明人： Pouria Zand ,  Kiran Uln

IPC分类号： G01S13/84 ,  G01S7/02 ,  H04B17/345 ,  G01S7/35

CPC分类号： G01S13/84 ,  G01S7/023 ,  G01S7/354 ,  H04B17/345 ,  G01S7/358

摘要： A multicarrier phase ranging system and method are provided. Generally, the method includes performing a handshake between first and a second transceiver to negotiate a list of channels and a start-time for a multicarrier phase ranging process. The process includes in a first cycle exchanging a Constant Tone (CT) between the first and second transceiver in a first epoch on a first channel, and processing the CT received in the first and second transceiver to measure a difference in phase between the CT received and a reference signal. The CT received is checked for interference using software or hardware in either or both of the first and second transceiver. If no interference is detected the first and second transceiver switch to another channel and exchange the CT at a next epoch. If interference is detected, at least one channel is skipped for at least a subsequent epoch.

公开(公告)号：US20240288539A1

公开(公告)日：2024-08-29

申请号：US18655894

申请日：2024-05-06

申请人： UHNDER, INC.

发明人： Monier Maher ,  Marius Goldenberg ,  Chung-Kai Chow ,  Frederick Rush ,  Otto A. Schmid

IPC分类号： G01S7/35 ,  G01S7/40 ,  G01S13/32 ,  G01S13/36 ,  G01S13/931

CPC分类号： G01S7/354 ,  G01S7/40 ,  G01S7/4017 ,  G01S13/325 ,  G01S13/36 ,  G01S7/356 ,  G01S7/358 ,  G01S13/931

摘要： A multi-chip MIMO radar system includes a plurality of transmitters and a plurality of receivers. Each of the pluralities of transmitters and receivers are arranged across a plurality of chips. The multi-chip MIMO radar system is configured to provide an exemplary chip synchronization such that the transmitters and receivers of each chip of the radar system are synchronized with the transmitters and receivers of every other chip of the radar system.