公开(公告)号：US20240288537A1

公开(公告)日：2024-08-29

申请号：US18501015

申请日：2023-11-02

申请人： RichWave Technology Corp.

发明人： Hsiang-Feng Chi

IPC分类号： G01S7/32 ,  G01S13/34

CPC分类号： G01S7/32 ,  G01S13/343 ,  G01S13/345

摘要： The disclosure provides a radar apparatus, a signal processing circuit, and a signal processing method for radar apparatus. The radar apparatus includes a frequency synthesizer, a signal generator, and a transmitting front-end circuit. The frequency synthesizer generates a carrier signal. A frequency of the carrier signal changes with time within a sweep period of the carrier signal, and the carrier signal includes a frequency raising section and a frequency decreasing section. The signal generator generates a shaping signal. The shaping signal includes two sections. The two sections have different amplitudes. One of the two sections corresponds to a turn-around section between the frequency raising section and the frequency decreasing section. The transmitting front-end circuit is coupled to the frequency synthesizer and the signal generator and generates a transmitting signal according to the carrier signal and the shaping signal. In this way, the spurious peak on the spectrum is reduced.

公开(公告)号：US12032088B2

公开(公告)日：2024-07-09

申请号：US16879476

申请日：2020-05-20

申请人： NXP USA, Inc.

发明人： Maik Brett ,  Ryan Haoyun Wu ,  Arunesh Roy

IPC分类号： G01S13/34 ,  G01S7/00 ,  G01S7/02 ,  G01S13/931 ,  G01S7/03 ,  H04B1/04 ,  H04B1/16 ,  H04B1/69 ,  H04W4/38

CPC分类号： G01S7/006 ,  G01S7/023 ,  G01S7/0232 ,  G01S7/0235 ,  G01S13/345 ,  G01S13/931 ,  G01S7/022 ,  G01S7/032 ,  G01S13/343 ,  G01S2013/9316 ,  H04B1/04 ,  H04B1/16 ,  H04B1/69 ,  H04B2001/6912 ,  H04W4/38

摘要： A device for a radar sensor is disclosed, the device comprising: transmission circuitry configured to generate transmission signals with a linear frequency chirp modulation in a predetermined frequency band for output to a radar antenna; reception circuitry configured to receive reflection signals corresponding to reflection of the transmitted radar signals from one or more physical objects; and control circuitry configured to select a frequency range within said predetermined frequency band and/or a timing pattern for said transmission signals; wherein said device is configured to: receive a further signal from a further radar sensor; determine, from said further signal, a frequency range and/or timing pattern in use by said further radar sensor for transmission of further transmission signals; and select a frequency range within said predetermined frequency band and/or a timing pattern for said transmission signals which does not conflict with the frequency range and/or timing pattern of said further transmission signals.

公开(公告)号：US11774592B2

公开(公告)日：2023-10-03

申请号：US16574551

申请日：2019-09-18

申请人： Infineon Technologies AG

发明人： Ivan Tsvelykh ,  Ashutosh Baheti ,  Avik Santra ,  Samo Vehovc

IPC分类号： G01S17/58 ,  G01S17/48 ,  G01S13/34 ,  G06F3/03 ,  G06F17/14 ,  G01S7/35 ,  G01S13/02 ,  G01S7/03 ,  G01S7/41 ,  H04W72/542 ,  G01S7/285 ,  H04L27/26 ,  H04W72/0453 ,  H04B7/06 ,  G01S7/00 ,  G01S13/06

CPC分类号： G01S17/58 ,  G01S13/345 ,  G01S17/48 ,  G06F3/0325 ,  G06F17/142 ,  G01S7/006 ,  G01S7/032 ,  G01S7/285 ,  G01S7/35 ,  G01S7/356 ,  G01S7/41 ,  G01S7/418 ,  G01S13/02 ,  G01S13/06 ,  H04B7/0617 ,  H04L27/2601 ,  H04W72/0453 ,  H04W72/542

摘要： A wireless multimode system includes: an array of N antenna elements that includes a first portion of M antenna elements and a second portion of L antenna elements; M transmission amplifiers configured to transmit, via the M antenna elements, frames of transmit data, where the frames of transmit data include transmit radar signals and transmit communication signals; M reception amplifiers configured to receive, via the M antenna elements, frames of receive data, where the frames of receive data includes receive communication signals; and L reception amplifiers configured to receive, via the L antenna elements, receive radar signals; and a resource scheduler configured to allocate bandwidth for transmit radar signals and transmit communication signals within the frames of transmit data based on one or more predetermined parameters.

公开(公告)号：USRE49571E1

公开(公告)日：2023-07-04

申请号：US17154611

申请日：2021-01-21

申请人： Texas Instruments Incorporated

发明人： Karthik Subburaj ,  Sreekiran Samala ,  Raghu Ganesan

IPC分类号： H03L7/06 ,  G01R29/26 ,  G01S13/34 ,  G01S13/931 ,  G01S7/40 ,  G01S7/03

CPC分类号： G01R29/26 ,  G01S7/03 ,  G01S7/4008 ,  G01S7/4017 ,  G01S13/343 ,  G01S13/345 ,  G01S13/931 ,  H03L7/06

摘要： A method of measuring phase noise (PN). A PLL frequency synthesizer is provided including a first phase frequency detector (PFD) receiving a reference frequency signal coupled to a first charge pump (CP) coupled to a VCO having an output fedback to the first PFD through a feedback divider that provides a divided frequency signal to the first PFD which outputs an error signal, and PN measurement circuitry including a replica CP coupled to an output of a second PFD or the first PFD. The error signal is received at the replica CP or the divided and reference frequency signal are received at the second PFD, wherein the replica CP outputs a scaled phase error current which is current-to-voltage converted and amplified to provide an amplified phase error voltage, and digitized to provide a digital phase error signal. The digital phase error signal is frequency analyzed to generate a PN measurement.

公开(公告)号：US11650286B2

公开(公告)日：2023-05-16

申请号：US16479732

申请日：2018-01-24

申请人： ARBE ROBOTICS LTD.

发明人： Ronit Roxana Fuchs

IPC分类号： G01S7/35 ,  G01S13/34 ,  G01S13/93

CPC分类号： G01S7/354 ,  G01S7/356 ,  G01S7/358 ,  G01S13/345 ,  G01S13/93

摘要： A method for separating large and small targets from noise in radar IF signals, according to which a receiver receives, echo signals that are reflected from targets of different size (such as walls or ground), in response to the transmission of chirp FMCW radar signals, modulated (e.g., using Linear Frequency Modulation) in a predetermined modulation speed for a predetermined duration. The echo signals are down-converted by mixing them with the transmitted signal, to obtain received Intermediate Frequency (IF) signal, which is then sampled both in phase (I-channel) and in quadrature phase (Q-channel). The received IF signal passes a Fourier transform, to obtain power spectral components that belong to a relevant frequency domain, associated with an echo signal reflected from a real target, along with corresponding power spectral components that belong to an irrelevant, opposite frequency domain. The noise distribution and level in the relevant frequency domain is calculated by estimating the noise level in the irrelevant frequency domain and targets represented by a set of consequent relevant frequencies are detected by comparing the power spectral component at each relevant frequency to the calculated noise level and identifying power spectral components with likelihood, which is above a predetermined threshold.

公开(公告)号：US20190195989A1

公开(公告)日：2019-06-27

申请号：US15960245

申请日：2018-04-23

申请人： TLC Millimeter Wave Products, Inc.

发明人： Timothy T. Childs ,  Daniel C. Eller ,  Kalyani Mantha ,  John Geddes ,  Manish Saka

IPC分类号： G01S7/41 ,  G01S13/86 ,  G01S13/88

CPC分类号： G01S7/417 ,  G01S7/412 ,  G01S7/415 ,  G01S13/0209 ,  G01S13/04 ,  G01S13/345 ,  G01S13/867 ,  G01S13/886 ,  G08B13/19695 ,  G08B13/2491

摘要： A method of detecting threats. A threat detection system is provided that includes a controller, a millimeter wave radar, a signature database and a camera. The signature database or machine learning includes time and frequency domain characteristic data for a threat. A signal is emitted by the millimeter wave radar. A return signal is received when the signal bounces off an object. Time and frequency domain characteristic data of the return signal is compared to the signature database or the machine learned characteristics to determine the threat, anomaly, foreign object and material characteristics.

公开(公告)号：US20190180622A1

公开(公告)日：2019-06-13

申请号：US15839101

申请日：2017-12-12

申请人： NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： LI-FENG YANG ,  CHIEN-JUNG CHIU

IPC分类号： G08G1/16 ,  G01S13/93 ,  G01S13/34 ,  B60W30/095 ,  B60W30/09 ,  B60W50/14 ,  G08G5/00

CPC分类号： G08G1/166 ,  B60W30/09 ,  B60W30/095 ,  B60W50/14 ,  B60W2420/52 ,  B60W2750/308 ,  G01S13/345 ,  G01S13/9303 ,  G01S13/931 ,  G08G1/163 ,  G08G5/0008 ,  G08G5/0021 ,  G08G5/0078 ,  G08G5/045

摘要： A collision avoidance apparatus for a vehicle includes a data collection module, collecting first automatic dependent surveillance broadcast (ADS-B) data of the vehicle itself, second ADS-B data of at least other one vehicle and a detection result related to a radar reflection wave reflected from an object within a first range; and a possible collision determination/avoidance module, electrically connected to the data collection module, determining whether the other one vehicle will collide with the vehicle according to the first and second ADS-B data and whether the object will collide with the vehicle according to the detection result, so as to generate a determination result, wherein the signal processing module generate a control signal to control the vehicle perform a corresponding action according to the determination result. Thus, collision avoidance can be achieved.

公开(公告)号：US20180321367A1

公开(公告)日：2018-11-08

申请号：US16022795

申请日：2018-06-29

申请人： Nidec Corporation ,  WGR Co., Ltd.

发明人： Hideki KIRINO ,  Hiroyuki KAMO

IPC分类号： G01S13/34 ,  H04B7/0413 ,  G01S7/03 ,  H01Q21/06 ,  G01S7/41 ,  G01S13/86 ,  H01Q1/32 ,  H01P5/12 ,  H01P3/16 ,  H01P1/02 ,  G01S13/93 ,  G01S13/91 ,  G01S13/42 ,  H01Q3/36

CPC分类号： G01S13/345 ,  G01S7/03 ,  G01S7/41 ,  G01S13/347 ,  G01S13/426 ,  G01S13/867 ,  G01S13/931 ,  G01S2013/916 ,  G01S2013/9375 ,  H01P1/025 ,  H01P3/165 ,  H01P5/12 ,  H01Q1/3233 ,  H01Q3/36 ,  H01Q21/064 ,  H04B7/0413

摘要： A waveguide device includes: an electrically conductive member having an electrically conductive surface; a waveguide member having an electrically-conductive waveguide face of a stripe shape opposing the electrically conductive surface, the waveguide member extending along the electrically conductive surface; and an artificial magnetic conductor extending on both sides of the waveguide member. The waveguide member has a bend at which the direction that the waveguide member extends changes. A waveguide which is defined by the electrically conductive surface, the waveguide face, and the artificial magnetic conductor includes a gap enlargement where a gap between the electrically conductive surface and the waveguide face is locally increased. In a perspective view along a direction perpendicular to the electrically conductive surface, at least a portion of the bend has an overlap with the gap enlargement.

公开(公告)号：US20180259634A1

公开(公告)日：2018-09-13

申请号：US15893051

申请日：2018-02-09

申请人： DENSO TEN Limited

发明人： Takayuki OKAMOTO

IPC分类号： G01S13/34 ,  G01S7/35 ,  G01S13/93

CPC分类号： G01S13/345 ,  G01S7/354 ,  G01S7/414 ,  G01S13/42 ,  G01S13/46 ,  G01S13/726 ,  G01S13/931 ,  G01S2007/4034 ,  G01S2013/462

摘要： There is provided a radar device configured to detect a target by executing signal processing on the basis of a transmission wave and a reflection wave of the transmission wave reflected on the target. An antenna unit having a plurality of antennas arranged in a vertical direction. A calculation unit configured to calculate vertical azimuths of the target on the basis of the reflection waves with respect to the transmission waves transmitted from each of the antennas, and to accumulate calculation results. An estimation unit configured to calculate moving average values of maximum values of the vertical azimuths on the basis of the calculation results accumulated by the calculation unit, and to estimate the moving average values of the maximum values, as a height of the target.

公开(公告)号：US10001556B2

公开(公告)日：2018-06-19

申请号：US14653252

申请日：2013-12-13

申请人： DENSO CORPORATION

发明人： Masanobu Yukumatsu

IPC分类号： G01S13/34 ,  G01S7/35 ,  G01S13/93

CPC分类号： G01S13/345 ,  G01S7/35 ,  G01S13/343 ,  G01S13/931

摘要： An FMCW (frequency modulated continuous wave) radar apparatus is provided. The apparatus transmits a transmission signal that includes a first frequency-rise time period whose frequency sequentially rises with a first modulated gradient, a first frequency-fall time period whose frequency sequentially falls with the first modulated gradient, a second frequency-rise time period whose frequency sequentially rises with a second modulated gradient different from the first modulated gradient, and a second frequency-fall time period whose frequency sequentially falls with the second modulated gradient. In the apparatus, frequencies of a plurality of peaks are specified in respect of each of beat signals obtained in response to the transmission. Using the specified plurality of peaks as objects, a notification is given as to the presence of oscillation in a power supply bias circuit, on the basis of that, of the groups each formed by extracting peaks in a manner of extracting one from each of the beat signals, there is a group in which all the peaks in the group are within the same frequency range.