Showing 1-25 of 3,591 resultsfor "Index Terms":frequency modulated continuous wave (FMCW) radar
"Index Terms":frequency modulated continuous wave (FMCW) radar
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A comparison of two frequency synthesizer architectures in SiGe BiCMOS for FMCW radar
Arzu Ergintav;Frank Herzel;Ahmad Mushtaq;Wojciech Debski;Herman Jalli Ng;Dietmar Kissinger
2018 22nd International Microwave and Radar Conference (MIKON)
Year: 2018 | Conference Paper |
We present a fractional-N phase-locked loop (PLL) with an option to operate either in single-loop or in dual-loop configuration. The PLL is composed of two chips: a voltage controlled oscillator (VCO) chip and a synthesizer chip that are integrated on one printed circuit board. In the synthesizer chip, a chirp generation circuit is included for frequency-modulated continuous-wave (FMCW) r...Show More
Impact of Circuit Nonlinearities on the Performance of Millimeter-Wave FMCW Radar-on-Chip Systems
2022 IEEE Radar Conference (RadarConf22)
Year: 2022 | Conference Paper |
In this paper, we present a nonlinear system model to evaluate the impact of circuit nonlinearities on the performance of millimeter-wave frequency-modulated continuous-wave (FMCW) radar-on-chip systems. The developed model can be used to derive frequency and amplitude of spurs in the radar IF spectrum. The major new insights about the impact of different nonlinearities as well a...Show More
An S-Band CMOS Mixer-First Single-RF-Port Duplexing FMCW Radar
2019 IEEE MTT-S International Microwave Symposium (IMS)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
A mixer-first single-RF-port duplexing RF frontend is proposed and implemented for frequency-modulated continuous-wave (FMCW) radar applications in this paper. The RF frontend is a bidirectional simultaneous frequency up-and-down converter. Equations of basic parameters of the frontend are derived to provide design criteria. The proposed radar architecture has been evaluated with...Show More
Low-Terahertz Radar Image Analysis for Road Obstacles
2021 33rd Chinese Control and Decision Conference (CCDC)
Year: 2021 | Conference Paper |
At present, laser radar is main studied in the in automotive sensing. However, Driverless cars have higher request for different environment and light conditions. It is even difficult for lidar to find tiny targets on the road, such as pits and packets. In the paper, The low-terahertz high-resolution imaging radar system operating frequency is 94GHz, Using the frequency-modulated conti...Show More
Harmonic spurs in local oscillators can degrade the performance of millimeter-wave frequency-modulated continuous-wave radar systems that employ a large-ratio frequency multiplier for LO generation. In this paper, we analyze the effect caused by harmonic spurs on system performance. Undesired spurs show up alongside the beat-frequency component in the de-chirped intermediate frequency spectr...Show More
D-Band FMCW Radar with sub-cm Range Resolution based on a BiCMOS mm Wave IC
Wael A. Ahmad;Maciej Kucharski;Herman Jalli Ng;Dietmar Kissinger
This paper demonstrates a sub-cm range resolution of a D-band (110–170 GHz) radar based on a bistatic BiCMOS mmWave IC with on-chip antennas. A wideband ring voltage-controlled oscillator (VCO) is utilized to generate a 20 GHz sweep bandwidth which translates to a frequency-modulated continuous-wave (FMCW) modulation bandwidth of 80 GHz by means of a built-in quadrupler in the radar...Show More
Cough Detection Using Millimeter-Wave Fmcw Radar
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
This paper presents a signal processing method to detect human cough signals with a millimeter-wave frequency-modulated continuous-wave (FMCW) radar. Tiny vibrations induced by coughing can be extracted by using the phase demodulation technique of the FMCW radar. A body motion artifact cancellation (BMAC) technique is exploited to suppress motion artifacts, which can easily...Show More
240-GHz System on Chip FMCW Radar for Short Range Applications
Alexander Kaineder;Christoph Mangiavillano;Faisal Ahmed;Muhammad Furqan;Andreas Stelzer
2020 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)
Year: 2020 | Conference Paper |
Cited by: Papers (11)
GHz system on chip (SoC) frequency-modulated continuous-wave (FMCW) radar for short range applications is presented in this paper. The SoC is attached to a carrier printed circuit board (PCB) which in turn is mounted on a radio frequency (RF) frontend using an interposer. Through the use of on-chip antennas, a small form factor is achieved for the SoC, only requiring bond wires for vol...Show More
A SiGe-Chip-Based D-Band FMCW-Radar Sensor With 53-GHz Tuning Range for High Resolution Measurements in Industrial Applications
Steffen Hansen;Christian Bredendiek;Gunnar Briese;André Froehly;Reinhold Herschel;Nils Pohl
The article presents a monostatic $D$ -band frequency-modulated continuous-wave (FMCW) radar based on a fully integrated monostatic single-channel silicon-germanium (SiGe) transceiver (TRX) chip. The chip is fabricated in Infineon’s bipolar-complementary metal–oxide–semiconductor (BiCMOS) production technology B11HFC which offers heterojunction bipolar transistors (HBTs) with an $f_{...Show More
Hydrological Information Measurement Using an MM-Wave FMCW Radar
2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
Millimeter-wave (MMW) radar is a non-contact technology that can detect range, velocity and angle information of objects. In addition to using in automotive applications, millimeter-wave radar sensors can also be used for hydrological information measurement. Hence, we use a frequency modulated continuous wave (FMCW) radar operating at 77GHz to measure the water level and f...Show More
FMCW Radar for Data Acquisition on High-Density Polyethylene Guides
Federico García-Rial;Mario Ramírez-Torres;Luis Úbeda-Medina;Jesús Grajal
Current labeling techniques have several disadvantages, such as label durability on outdoor conditions, that hinder the growth of automated data acquisition systems. We present a millimeter-wave radar-based alternative that can solve some of these problems by reading prerecorded binary air gaps in a low-cost plastic guide made from high-density polyethylene. In this article, bit detection in...Show More
A Compact Multi-mode Integrated Doppler radar at 2.4 GHz for Multipurpose Applications
Pallab Kumar Gogoi;Mrinal Kanti Mandal;Ayush Kumar;Tapas Chakravarty
2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)
Year: 2022 | Conference Paper |
This paper presents a new architecture of a compact multimode FMCW radar for general purpose short-range applications. The radar can operate in CW as well as in FMCW modes. The transmitted RF frequency or frequency range can be arbitrarily selected using an inbuilt SPI control over 2.25-2.50 GHz with a frequency resolution of at least 100 kHz. A modified VCO-PLL loop with a...Show More
Millimeter-Wave Sensor With FMICW Capabilities for Medium-Range High-Resolution Radars
Pablo Almorox-Gonzalez;JosÉ-TomÁs Gonzalez-Partida;Mateo Burgos-Garcia;B. Pablo Dorta-Naranjo;Javier Gismero
Frequency-modulated continuous-wave (FMCW) radars offer many advantages such as low peak power, low probability of interception, low interference with other systems, and high-range resolution. However, their major drawback is the isolation required between the transmitter and receiver that typically leads to the use of two separate antennas for transmission and reception. Some schemes ...Show More
A 55–64-GHz Fully Integrated Miniaturized FMCW Radar Sensor Module for Short-Range Applications
Ivan M. Milosavljević;Đorđe P. Glavonjić;Dušan P. Krčum;Siniša P. Jovanović;Veljko R. Mihajlović;Vladimir M. Milovanović
A compact wide-bandwidth frequency-modulated continuous-wave (FMCW) radar sensor module with integrated antennas intended for operation in the unlicensed 60-GHz band is presented. The proposed FMCW transceiver chip is at the heart of the radar module and it incorporates a frequency synthesizer and the analog baseband circuitry. The mm-wave radar sensor achieves sub-2-...Show More
Range Resolution Improvement in FMCW Radar Through VCO's Nonlinearity Compensation
2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks
Year: 2023 | Conference Paper |
Cited by: Papers (2)
In order to achieve good range resolution and accuracy on frequency-modulated continuous-wave (FMCW) radars, highly linear chirps are necessary. Voltage-controlled oscillators (V COs) present nonlinearities in their tuning curve. Then, once VCOs are a fundamental building block in many continuous-wave radar systems, these nonlinearities translate into negative effects in terms of...Show More
Validity of Stop-and-Go Approximation in High-Resolution Ku-band FMCW SAR with High-Velocity Platform
2021 7th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
In this study, the conditions under which “stop-and-go approximation” applies to FMCW SAR are analyzed. We analytically verified that the validity of stop-and-go approximation is generalized in Ku-band frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR). SAR processing time reduces without degrading the SAR image quality by applying stop-and-go approximation...Show More
UAV-Borne FMCW InSAR for Focusing Buried Objects
Ralf Burr;Markus Schartel;Alexander Grathwohl;Winfried Mayer;Thomas Walter;Christian Waldschmidt
Antipersonnel mines are hidden weapons that are usually buried close to the surface and are triggered by a foot step of the victim. A sensor that is able to detect minimum metal mines is a ground penetrating synthetic aperture radar (GPSAR). In previous work, an unmanned aerial vehicle (UAV)-based GPSAR was developed and tested for the detection of buried landmines. The real topography was n...Show More
Target Indication With FMCW-OAM Radar
Vortex electromagnetic (EM) waves, which carry orbital angular momentum (OAM), can provide more information of the target in radar imaging and target detection. Pulsed radar is often used in current OAM radar design. However, compared with the pulsed radar, the frequency-modulated continuous-wave (FMCW) radar is small in size, light in weight, and low in power c...Show More
ECG Signal Reconstruction Using FMCW Radar and Convolutional Neural Network
2021 20th International Symposium on Communications and Information Technologies (ISCIT)
Year: 2021 | Conference Paper |
Cited by: Papers (13)
This paper presents a method for radar-based contactless vital sensing and ECG (ElectroCardioGram) signal reconstruction using deep learning. ECG signal is a typical representation of heartbeat signals. However, its measurement usually requires any contact device, which is not suitable due to discomfort of subjects. Radar system is effective for vital sensing because it can measure sma...Show More
Millimeter-Wave FMCW Signal Generators for Radar Applications
2018 14th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT)
Year: 2018 | Conference Paper |
Millimeter-wave radars could achieve high detection resolution and have drawn a lot of attention in recent years. Frequency-modulated continuous-wave (FMCW) radar is the most popular one in civil applications due to its low peak power and high integration, where the FMCW signal generator is one crucial block and has significant influence on the radar system performanc...Show More
Body Motion Artifact Cancellation Technique for Cough Detection Using FMCW Radar
A body motion artifact cancellation (BMAC) technique is proposed to detect human cough signals using a frequency-modulated continuous-wave (FMCW) radar. Human coughs are spontaneously accompanied by large-scale body motions, which overwhelm small-scale vibration signals induced by coughing. To mitigate these effects, motion-induced phase variations are estimated and compensated at resp...Show More
A 94-GHz FMCW Radar Receiver Based on Low-Barrier Diode
Sergey A. Korolyov;Aleksandr P. Shikov;Aleksandr V. Goryunov;Vladimir I. Shashkin
A receiver based on a low-barrier diode has been developed for use in a 94-GHz frequency-modulated continuous-wave radar. The receiver has a very simple design with the radio frequency (RF) front-end consisting of only a mixing diode mounted on a planar slot antenna. The low-barrier diode operates at a zero bias, and thus, the RF front end does not require any power supply. A transimpedance ...Show More
A Miniaturized Ultra-Wideband Radar for UAV Remote Sensing Applications
Feras Abushakra;Nathan Jeong;Deepak N. Elluru;Abhishek K. Awasthi;Shriniwas Kolpuke;Tuan Luong;Omid Reyhanigalangashi;Drew Taylor;S. Prasad Gogineni
This letter presents a novel approach to build a compact lightweight unmanned aerial vehicle (UAV) radar for remote sensing applications. The proposed radar exploits the recent advancement of an automotive radar chip for broadband chirp generation and rapid data processing. To compensate for the path losses and improve penetration at the millimeter-wave (mm-wave) frequency range,...Show More
This letter presents a novel system to perform range detections using an artificial neural network on the time-domain baseband signal of frequency-modulated continuous wave radar sensors. The network is trained and evaluated with synthetic signals, which are generated with a point target simulator. To evaluate the performance of the proposed approach, it is compared with an order statistics ...Show More
A radar system for indoor human localization and breath monitoring
2018 IEEE International Symposium on Medical Measurements and Applications (MeMeA)
Year: 2018 | Conference Paper |
Cited by: Papers (23)
This paper presents the study of a radar system for indoor human localization and vital signs monitoring. The article illustrates different solutions including linear frequency-modulated continuous-wave (FMCW) mode and recently proposed hybrid schemes, combining FMCW and continuous-wave (CW) interferometry modes. A new operating modality based on the use of the phase variations o...Show More
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