Precise control of broadband frequency chirps using optoelectronic feedback [PDF]
, 2009 We demonstrate the generation of wideband frequency sweeps using a semiconductor laser in an optoelectronic feedback loop. The rate and shape of the optical frequency sweep is locked to and determined by the frequency of a reference electronic signal ...
Leyva, Victor +4 more
core +1 more source
A Time‐Interleaved Swept‐Threshold ADC With Stable Timing for IR‐UWB Medical Radars
IET Circuits, Devices &Systems, Volume 2025, Issue 1, 2025.This paper presents a new method for direct sampling of the backscattered signal in ultrawideband (UWB) impulse radar for vital sign detection. One of the standard methods for direct sampling in UWB radars is the time‐interleaving technique. In these converters, NOT gates (logical inverter gates) and tunable delay cells are typically used to create ...
Parisa Amiri +2 more
wiley +1 more source
Backscatter Transponder Based on Frequency Selective Surface for FMCW Radar Applications [PDF]
, 2014 This paper describes an actively-controlled frequency selective surface (FSS) to implement a backscatter transponder. The FSS is composed by dipoles loaded with switching PIN diodes. The transponder exploits the change in the radar cross section (RCS) of
Girbau, D. +3 more
core +1 more source
Over-The-Air Deramping For Multistatic Perimeter Surveillance [PDF]
, 2015 This paper explores the use of an over-the-air deramping (OTAD) system as a solution for perimeter surveillance. Over-the-air deramping is a technique for wirelessly synchronising distributed passive FMCW radar nodes to a dual-frequency master FMCW ...
Ash, M +3 more
core +1 more source
Car2Car Communication Using a Modulated Backscatter and Automotive FMCW Radar [PDF]
, 2021 A. Lázaro +4 more
openalex +1 more source
Coherent CW THz generation with a coupled‐cavity mini‐array VCSEL
Electronics Letters, Volume 61, Issue 1, January/December 2025.A novel laser source for CW THz generation is presented here: a coupled‐cavity mini‐array vertical‐cavity surface‐emitting lasers (VCSEL). Designed with a single contact for a current in the mA range, this mini‐array VCSEL is shown to provide beat frequencies up to 300 GHz, which are converted to THz radiation in a standard homodyne THz setup. With its
Yinghui Hu +6 more
wiley +1 more source
Calibration of Motional Frequency Spread for Wide-Band FMCW Automotive Millimeter-Wave Radar
IEEE Access, 2020 As a key module for self-driving cars and advanced driver assistant systems (ADAS), frequency modulation continuous wave (FMCW) automotive millimeter-wave (mmwave) radar has a good market prospect.
Cheng Zhang +5 more
doaj +1 more source
Analysis of sandstone pore space fluid saturation and mineralogy variation via application of monostatic K-band frequency modulated continuous wave radar [PDF]
, 2018 In this paper we present the preliminary findings from a world first investigation into monostatic frequency modulated continuous wave (FMCW) radar analysis of porous sandstones and their fluid content.
Bailey, Chris +6 more
core +2 more sources
A Low‐Complexity Target Detection Technique Using the Prefix Sum Algorithm
Electronics Letters, Volume 61, Issue 1, January/December 2025.The conventional CA‐CFAR technique has a time complexity of O(n4). A novelty CA‐CFAR technique based on the prefix sum algorithm with a complexity O(n2) is proposed in this article. ABSTRACT A conventional target detection technique for FMCW millimeter‐wave radar applies a two‐dimensional (2D) cell‐averaging constant false alarm rate (CA‐CFAR) detector
Li Zhang, Hai Lin, Ke Wang, Feng Zhang
wiley +1 more source
All-Weather Automotive Perception: Monte Carlo Simulation of FMCW LiDAR-Radar Sensor Fusion in Foggy Conditions [PDF]
E3S Web of ConferencesThis work presents an end-to-end Monte Carlo-based framework for FMCW LiDAR-radar fusion in fog, targeting all-weather automotive perception. The model couples radiative-transfer simulation of FMCW LiDAR with a 77 GHz radar link-budget formulation ...
El Haddioui Yassine +3 more
doaj +1 more source