Results 41 to 50 of about 18,179 (199)

Insights into dynamic tuning of magnetic-resonant wireless power transfer receivers based on switch-mode gyrators [PDF]

open access: yes, 2018
Magnetic-resonant wireless power transfer (WPT) has become a reliable contactless source of power for a wide range of applications. WPT spans different power levels ranging from low-power implantable devices up to high-power electric vehicles (EV ...
Alarcón Cot, Eduardo José   +1 more
core   +3 more sources

Energy Coupled Mode Theory for an arbitrary number of resonators

open access: yes, 2014
There is recent interest in the inter and intra element interactions of metamaterial unit cells. To calculate the effects of these interactions which can be substantial, an ab initio general coupled mode equation, in the form of an eigenvalue problem, is
Elnaggar, Sameh Y.   +2 more
core   +1 more source

A Novel Hybrid Wireless Power Transfer Coupler for Unmanned Aerial Vehicle Application

open access: yesIEEE Open Journal of Power Electronics
The special structure of unmanned aerial vehicles (UAVs) poses challenges to the integrated design method and power transmission capability of the couplers used for their wireless charging.
Pan Sun   +5 more
doaj   +1 more source

Optimal Analytical Solution for a Capacitive Wireless Power Transfer System with One Transmitter and Two Receivers

open access: yesEnergies, 2017
Wireless power transfer from one transmitter to multiple receivers through inductive coupling is slowly entering the market. However, for certain applications, capacitive wireless power transfer (CWPT) using electric coupling might be preferable. In this
Ben Minnaert, Nobby Stevens
doaj   +1 more source

Multirate cascaded discrete-time low-pass ΔΣ modulator for GSM/Bluetooth/UMTS [PDF]

open access: yes, 2010
This paper shows that multirate processing in a cascaded discrete-time ΔΣ modulator allows to reduce the power consumption by up to 35%. Multirate processing is possible in a discrete-time ΔΣ modulator by its adaptibility with the sampling frequency. The
Bos, Lynn   +4 more
core   +1 more source

Coupling-Independent Capacitive Wireless Power Transfer With One Transmitter and Multiple Receivers Using Frequency Bifurcation

open access: yesIEEE Open Journal of Power Electronics
Capacitive wireless power transfer utilizes capacitive coupling to transfer electrical energy wirelessly. Due to the nature of the coupling, it is seen as a well-suited technique for single input multiple outputs configurations.
Aris van Ieperen   +2 more
doaj   +1 more source

Defining the mutual coupling of capacitive power transfer for wireless power transfer

open access: yesElectronics Letters, 2015
Capacitive power transfer (CPT) based on electric field coupling has been proposed recently as an alternative technology for wireless power transfer, and a good understanding of the capacitive coupling is of great importance in the design and evaluation of CPT systems. A new term named capacitive coupling coefficient
L. Huang, A.P. Hu
openaire   +1 more source

A Copper Foil Electromagnetic Coupler and Its Wireless Power Transfer System without Compensation

open access: yesWorld Electric Vehicle Journal, 2021
This paper proposes a copper foil electromagnetic coupler integrating inductance and capacitance and its wireless power transfer (WPT) system without additional compensation structure.
Xueying Wu, Mingxuan Mao
doaj   +1 more source

Short-range ultrasonic communications in air using quadrature modulation [PDF]

open access: yes, 2009
A study has been undertaken of ultrasonic communications methods in air, using a quadrature modulation method. Simulations were first performed to establish the likely performance of quadrature phase shift keying over the limited bandwidth available in ...
Green, Roger, Hutchins, David A., Li, C.
core   +1 more source

A Strip-Coupler for Dynamic Capacitive Wireless Power Transfer [PDF]

open access: yesIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019
Dynamic wireless power transfer is an effective way to mitigate the range anxiety of electric vehicles. This paper presents a strip-coupler for dynamic capacitive wireless power transfer application with reduced cost and increased misalignment tolerance. The structure of the proposed strip-coupler and the concept of strip-coupler based dynamic wireless
Xu Chen, Shengbao Yu, Zhe Zhang
openaire   +1 more source

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