Results 1 to 10 of about 1,542 (116)

Microwave Sensors for Breast Cancer Detection [PDF]

open access: yesSensors, 2018
Breast cancer is the leading cause of death among females, early diagnostic methods with suitable treatments improve the 5-year survival rates significantly.
Lulu Wang
doaj   +4 more sources

Non-Contact Detection of Breathing Using a Microwave Sensor

open access: yesSensors, 2009
In this paper the use of a continuous-wave microwave sensor as a non-contact tool for quantitative measurement of respiratory tidal volume has been evaluated by experimentation in seventeen healthy volunteers. The sensor working principle is reported and
Massimo Marsili   +9 more
doaj   +3 more sources

High-Sensitivity Microwave Sensor for Liquid Characterization Using a Complementary Circular Spiral Resonator

open access: yesSensors, 2019
This paper describes a low-cost, small size, and high-sensitivity microwave sensor using a Complementary Circular Spiral Resonator (CCSR), which operates at around 2.4 GHz, for identifying liquid samples and determining their dielectric constants.
Xingyun Zhang   +3 more
doaj   +3 more sources

Optical Fiber Displacement Sensor Based on Microwave Photonics Interferometry

open access: yesSensors, 2018
An optical fiber displacement sensor based on the microwave photonics interferometric (MWPI) method is proposed and experimented, which provides an ideal solution for large range displacement measurement with high resolution.
Hao Dong   +4 more
doaj   +3 more sources

Heterodyne sensing of microwaves with a quantum sensor [PDF]

open access: yesNature Communications, 2021
AbstractDiamond quantum sensors are sensitive to weak microwave magnetic fields resonant to the spin transitions. However, the spectral resolution in such protocols is ultimately limited by the sensor lifetime. Here, we demonstrate a heterodyne detection method for microwaves (MW) leading to a lifetime independent spectral resolution in the GHz range ...
Jonas Meinel   +7 more
openaire   +6 more sources

Inverse Synthetic Aperture Radar Sparse Imaging Exploiting the Group Dictionary Learning

open access: yesRemote Sensing, 2021
Sparse imaging relies on sparse representations of the target scenes to be imaged. Predefined dictionaries have long been used to transform radar target scenes into sparse domains, but the performance is limited by the artificially designed or existing ...
Changyu Hu   +3 more
doaj   +1 more source

Detection of Reinforced Concrete Blocks Using Two-Port Microwave CSRR Sensor

open access: yesIEEE Access, 2022
In this paper, the design, fabrication and testing of a two-port transmission line-based microwave sensor for the detection of various structural concrete bricks is presented.
Mohammed M. Bait-Suwailam   +2 more
doaj   +1 more source

Microwave Sensors Based on Resonant Elements [PDF]

open access: yesSensors, 2020
This paper highlights interest in the implementation of microwave sensors based on resonant elements, the subject of a special issue in the journal. A classification of these sensors on the basis of the operating principle is presented, and the advantages and limitations of the different sensor types are pointed out.
Ferran Martín, Paris Vélez, Marta Gil
openaire   +4 more sources

Automated Detection of Movements During Sleep Using a 3D Time-of-Flight Camera: Design and Experimental Evaluation

open access: yesIEEE Access, 2020
Analyses of sleep-related movement disorders have gained importance due to an increase in life expectancy. The present approaches for measuring movements are based on electromyography or accelerometry and provide only local or specific results from ...
Markus Gall   +7 more
doaj   +1 more source

Preliminary Analysis of Burn Degree Using Non-invasive Microwave Spiral Resonator Sensor for Clinical Applications

open access: yesFrontiers in Medical Technology, 2022
The European “Senseburn” project aims to develop a smart, portable, non-invasive microwave early effective diagnostic tool to assess the depth(d) and degree of burn.
Pramod K. B. Rangaiah   +7 more
doaj   +1 more source

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