Results 41 to 50 of about 7,339,804 (263)

RF Systems Design for Simultaneous Wireless Information and Power Transfer (SWIPT) in Automation and Transportation

IEEE Journal of Microwaves, 2021
This work presents some recent solutions that exploit the wireless power transfer (WPT) technology for energizing moving vehicles and machinery tools.
DIEGO MASOTTI, MAZEN SHANAWANI, GHULAM MURTAZA, GIACOMO PAOLINI, ALESSANDRA COSTANZO   +4 more
doaj   +1 more source

Metaheuristic-Based Optimization and Prototype Investigation of Low Frequency Metamaterial for Wireless Power Transfer Application

IEEE Access, 2023
The adoption of wireless charging technologies for consumer and industrial applications is inhibited by concerns over reliability culminating from the fluctuating output power, low transmit power, and power transfer efficiency (PTE) of these systems ...
Webster Adepoju, Indranil Bhattacharya, Mary Sanyaolu, Muhammad Bima Enagi, Ebrahim Nasr Esfahani, Trapa Banik, Olatunji Abiodun   +6 more
doaj   +1 more source

Load-independent Class EF inverters for inductive wireless power transfer [PDF]

, 2016
This paper will present the modelling, analysis and design of a load-independent Class EF inverter. This inverter is able to maintain zero-voltage switching (ZVS) operation and produce a constant output current for any load value without the need for ...
Samer Aldhaher, Aldhaher, S, Mitcheson, PD, David C. Yates, Paul D. Mitcheson, Yates, DC   +5 more
core   +1 more source

Analysis and Experiment on Multi-Antenna-to-Multi-Antenna RF Wireless Power Transfer

IEEE Access, 2021
In this paper, we provide a tool for predicting the power transfer efficiency of radio-frequency (RF) wireless power transfer (WPT). With its capability of long-range wireless power transfer, RF WPT is considered as a very promising recharging technique ...
Je Hyeon Park, Dong In Kim, Kae Won Choi
doaj   +1 more source

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding, Limeng Song, Wei Li, Jiangtao Hao, Xuewen Jiang, Mengru Li, Xinglai Yuan, Gang Wang, Yanqiu Zhu, Mi Tian, Hailong Wang, Hongxia Li, Biao Zhao, Rui Zhang, Bingbing Fan   +14 more
wiley   +1 more source

Sensitive Microwave Rectifier for High-Power Wireless Transfer Based on Ultra-Low Turn-On Voltage Quasi-Vertical GaN SBD

IEEE Open Journal of Power Electronics
This paper presents the theoretical analysis and experimental validation of a harmonic-terminated high-efficiency and high-power microwave rectifier.
Xiaochen Yu, Ya-Xun Lin, Ivona Z. Mitrovic, Steve Hall, Jenq-Horng Liang, Der-Sheng Chao, Minzhang Liu, Xiantao Yang, Yi Huang, Ta-Jen Yen, Jiafeng Zhou   +10 more
doaj   +1 more source

Energizing Emergency Exit Signs with Wireless Energy Transfer

Energies, 2023
Emergency exit lights in public buildings are necessary for safety and evacuation. International safety standards require such lighting in many public places, like airports, schools, malls, hospitals, and other spaces, to prevent human casualties in ...
Mohamed Z. Chaari, Gilroy P. Pereira, Mohamed Abdelfatah, Rashid Al-Rahimi, Otman Aghzout   +4 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

A New Receiver Detection and Fast System Activation Method for Wireless Power Transfer

, 2023
Publisher Copyright: © 2023 IEEE.Fast automatic identification of the presence of a WPT receiver is critically important for the future deployment of dynamic wireless power transfer devices of high efficiency and low cost.
Liu, Yining, Al Mahmud, Shamsul Arefeen, Tretyakov, Sergei, Jayathurathnage, Prasad, Kyyra, Jorma   +4 more
core   +1 more source

Unified Expression of the Conjugate Image Impedances for Two-port Representations [PDF]

Radioengineering, 2022
Conjugate image impedances are used to minimize power reflections in a variety of domains, including amplifier design, microwave engineering, wireless power transfer, antenna design and millimeter wave applications.
B. Minnaert
doaj