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Impedance Enhancement of Textile Grounded Loop Antenna Using High-Impedance Surface (HIS) for Healthcare Applications [PDF]

open access: yesSensors, 2020
In this paper, impedance matching enhancement of a grounded wearable low-profile loop antenna is investigated using a high-impedance surface (HIS) structure.
Mohammed M. Bait-Suwailam   +2 more
doaj   +7 more sources

Magneto-Impedance Biosensor Sensitivity: Effect and Enhancement [PDF]

open access: yesSensors, 2020
Biosensors based on magneto-impedance (MI) effect are powerful tools for biomedical applications as they are highly sensitive, stable, exhibit fast response, small in size, and have low hysteresis and power consumption.
Abkar Sayad   +2 more
doaj   +4 more sources

Sound energy enhancement via impedance-matched anisotropic metamaterial

open access: yesMaterials & Design, 2021
Sound energy enhancement realized by electronic circuit designs plays a vital part in many fields, including acoustic communication, medical imaging, acoustic positioning and sound energy harvesting.
Xiao Jia, Ming Yan, Minghui Hong
doaj   +3 more sources

Impedance-Based Modeling and Common Bus Stability Enhancement Control Algorithm in DC Microgrid

open access: yesIEEE Access, 2020
In this paper, impedance modeling of a DC microgrid system consisting of a source and load converter, including an input filter, is performed. Impedance-based modeling has been used to derive mathematical models of the output impedance of the source ...
Jae-Suk Lee   +3 more
doaj   +3 more sources

Bowtie Nanoantenna Array Integrated With Artificial Impedance Surfaces for Realizing High Field Enhancement and Perfect Absorption Simultaneously

open access: yesIEEE Access, 2020
High field enhancement and near-perfect absorption in nanoantennas were realized by using in-plane (between nanoantenna arms), out-of-plane (between nanoantenna and reflector), and array coupling (between nanoantennas in an array); however, it was ...
Mohamad Khoirul Anam, Sangjo Choi
doaj   +3 more sources

Perfect Absorption Efficiency Circular Nanodisk Array Integrated with a Reactive Impedance Surface with High Field Enhancement

open access: yesNanomaterials, 2020
Infrared (IR) absorbers based on a metal−insulator−metal (MIM) have been widely investigated due to their high absorption performance and simple structure.
Mohamad Khoirul Anam, Sangjo Choi
doaj   +3 more sources

Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation

open access: yesEnergies, 2018
To understand different control loops that have been proposed to improve the quality of current into grid from the perspective of output impedance, control-loop-based output impedance enhancement of grid-tied inverters for harmonic suppression is ...
Fei Wang   +3 more
doaj   +3 more sources

Enhancement of RF-DC Converters Efficiency by Input Impedance Optimization

open access: yesIEEE Access
The Internet of Things has transformed modern technology relying on sensors powered by batteries. However, the environmental impact of batteries is a significant concern.
Helena Ribeiro   +3 more
doaj   +2 more sources

Grid-Connected Inverter Output Impedance Reshaping for Passivity Enhancement and Disturbance Rejection

open access: yesIEEE Access, 2021
To improve both the stability and the disturbance suppression ability of single-phase grid-connected inverters through LCL filters, this paper proposes an inverter output impedance enhancing control mechanism.
Zhiwei Bian   +5 more
doaj   +1 more source

Enhancing Impedance Imaging Through Multimodal Tomography [PDF]

open access: yesIEEE Transactions on Biomedical Engineering, 2011
Several noninvasive modalities including electrical impedance tomography (EIT), magnetic induction tomography (MIT), and induced-current EIT (ICEIT) have been developed for imaging the electrical conductivity distribution within a human body. Although these modalities differ in how the excitation and detection circuitry (electrodes or coils) are ...
Doga Gürsoy   +3 more
openaire   +2 more sources

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