Results 1 to 10 of about 1,087,165 (163)

Sleep Apnea Syndrome Sensing at C-Band [PDF]

open access: yesIEEE Journal of Translational Engineering in Health and Medicine, 2018
A non-intrusive sleep apnea detection system using a C-Band channel sensing technique is proposed to monitor sleep apnea syndrome in real time. The system utilizes perturbations of RF signals to differentiate between patient's breathing under normal and ...
Xiaodong Yang   +8 more
doaj   +5 more sources

A Single-Longitudinal-Mode S + C Band Wavelength-Tunable Fiber Laser [PDF]

open access: yesSensors
An external cavity wavelength-fiber ring laser (ECWTFL) based on a semiconductor optical amplifier and a combined wavelength scanning filter in the Littrow configuration is proposed and experimentally demonstrated.
Da Liu, Yi Jiang
doaj   +2 more sources

LOW-COST C-BAND SIW BANDPASS FILTER USING FR4-EPOXY SUBSTRATE

open access: yesJordanian Journal of Computers and Information Technology, 2023
This paper describes a substrate integrated waveguide (SIW) filter built on an Fr4-Epoxy substrate with a dielectric constant 4.4 and a height of h=1.6mm.
Ahcene ABED   +3 more
doaj   +1 more source

Size Miniaturized Fractal Nested Circular Rings-Shaped Microstrip Antenna for Various Wireless Applications [PDF]

open access: yesEngineering and Technology Journal, 2018
In this paper; a wideband fractal circular rings shaped microstrip antenna over partial rectangular ground plane is presented. Fractal geometry technique is used in order to take advantage of its self-similar property which lead to attain not only size ...
Shereen Shandal   +2 more
doaj   +1 more source

Research and Application of Quasi-Coherent Technology in C-Band 25 Gbit/s Optical Transceiver

open access: yesGuangtongxin yanjiu, 2021
In order to extend the transmission distance of the traditional C-band high-speed optical module, this paper studies a kind of quasi-coherent reception technology based on the existing 25 Gbit/s optical module, and discusses the application scheme of the
Ling-qiao KONG, Qin-lian BU
doaj   +1 more source

Burned Area Detection and Mapping: Intercomparison of Sentinel-1 and Sentinel-2 Based Algorithms over Tropical Africa

open access: yesRemote Sensing, 2020
This study provides a comparative analysis of two Sentinel-1 and one Sentinel-2 burned area (BA) detection and mapping algorithms over 10 test sites (100 × 100 km) in tropical and sub-tropical Africa.
Mihai A. Tanase   +11 more
doaj   +1 more source

Bonding social capital and health within four First Nations communities in Canada: A cross-sectional study

open access: yesSSM: Population Health, 2021
To date, research on social capital in Indigenous contexts has been scarce. In this quantitative study, our objectives were to (1): Describe bonding social capital within four distinct First Nations communities in Canada, and (2) Explore the associations
Sharon Yeung   +7 more
doaj   +1 more source

Design of micro-strip patch antenna for C – band applications [PDF]

open access: yesE3S Web of Conferences, 2023
This paper presents the design of a horizontal slot micro-strip Patch antenna with a dual slot inset feed mechanism. The antenna is resonating at 4.28 GHz, with reflection coefficient of -16.32 dB, and a Bandwidth of 1 GHz.
Prashanth Kolluri   +3 more
doaj   +1 more source

Two-Propagation-Modes and Dual-Band Antenna for Circular Polarized TX/RX Systems at C-Band [PDF]

open access: yesRadioengineering, 2022
This paper presents a novel slotted array for dual-band and circular-polarized applications. Two different propagation modes within a Substrate Integrated Waveguide (SIW), TE10 and TE20, feed at the same time two pairs of slots, aimed at different ...
I. Herrero-Sebastian, C. Benavente-Peces
doaj  

Modified U-Slot Stacked Micro-Strip Patch Antenna for Ultra-Wideband Applications in S Band, C Band and X Band [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2017
The U-slot micro-strip patch antennas were originally developed for bandwidth broadening applications. This study presents a transmission line feed to modify the U-slot stacked rectangular micro-strip patch antenna for Ultra-Wide Band (UWB ...
Monika Surana, Amit Jain
doaj   +1 more source

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