Results 41 to 50 of about 39,888 (254)

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

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

Research on Key Technologies for Microwave Wireless Power Transfer Receivers

Energies
Microwave wireless power transfer (MWPT) technology has the advantages of long distance and high transmission efficiency; therefore, MWPT has many applications in aerospace, space solar power stations (SSPSs), and so on.
Man Ruan, Xudong Wang, Wanli Xu, Long Huang, Kai Wu, Mengyi Wang, Yujuan Yin, Jinmao Chen   +7 more
doaj   +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  

Applications of Microwaves in Medicine

IEEE Journal of Microwaves, 2023
Advances and updates in medical applications utilizing microwave techniques and technologies are reviewed in this paper. The article aims to provide an overview of enablers for microwave medical applications and their recent progress.
J.-C. Chiao, Changzhi Li, Jenshan Lin, Robert H. Caverly, James C. M. Hwang, Harel Rosen, Arye Rosen   +6 more
doaj   +1 more source

Diversity Combining for RF Energy Harvesting [PDF]

, 2017
RF energy harvesting (RFEH) is a promising technology for energy requirements of wireless communication nodes. However, providing sufficient amount of energy to ensure self-sufficient devices based on RFEH may be challenging.
Altinel, Dogay, Kurt, Gunes Karabulut
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 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

Wireless Powered Communication: Opportunities and Challenges

, 2014
The performance of wireless communication is fundamentally constrained by the limited battery life of wireless devices, whose operations are frequently disrupted due to the need of manual battery replacement/recharging.
Bi, Suzhi, Ho, Chin Keong, Zhang, Rui
core   +1 more source

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

Advanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin, Wenhao Wang, Thomas Caiwei Tan, Abhishek Kumar, Ridong Jia, Nikhil Navaratna, Ranjan Singh, Lijuan Xie   +7 more
wiley   +1 more source