Zobrazeno 1 - 10
of 943
pro vyhledávání: '"Wireless"'
Autor:
Peigen Zhou, Debin Hou, Jiayang Yu, Pinpin Yan, Jiarui Hu, Jixin Chen, Long Wang, Hao Gao, Haoyi Dong, Wei Hong
Publikováno v:
IEEE Journal of Solid-State Circuits, 56(10), 3077-3093. Institute of Electrical and Electronics Engineers
This article presents a fully integrated IEEE 802.11aj direct-conversion transceiver system in a 120-nm SiGe:C BiCMOS technology. The system includes a transmitter, a receiver, and two onboard substrates integrated waveguide-fed Yagi-Uda antennas. In
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 70:1233-1241
Autor:
Gregg H. Jessen
Publikováno v:
IEEE Spectrum. 58:36-42
IN THE MAY 2002 ISSUE OF THIS MAGAZINE, THE LATE Lester F. Eastman and Umesh K. Mishra made the case for what was then a long-shot technology in the world of power semiconductors: gallium nitride (GaN). They presented an optimistic outlook for powerf
Publikováno v:
IEEE Transactions on Power Electronics. 36:2456-2460
Megahertz-frequency inductive wireless power transfer holds the promise of compact and efficient wireless power transfer. Unfortunately, due to high-frequency losses in wide-bandgap semiconductors and low- $Q$ high-frequency coil designs, these syste
Autor:
Woojin Choi, Jaekyung Shin, Youngoo Yang, Kang-Yoon Lee, Keum Cheol Hwang, Hyungmo Koo, Sungjae Oh, Hansik Oh
Publikováno v:
IEEE Access, Vol 9, Pp 45230-45241 (2021)
This paper presents a high-efficiency wireless power transfer (WPT) system that can charge multiple receivers (Rx’s) of various types. For system analysis, the transmitted power and received power levels are derived using the parameters of the reso
Autor:
Youngoo Yang, Imran Ali, Keum Cheol Hwang, YoungGun Pu, Arash Hejazi, Reza E. Rad, Yasser Mohammadi Qaragoez, Byeong-Gi Jang, Kang-Yoon Lee
Publikováno v:
IEEE Transactions on Industrial Electronics. 68:9574-9585
In this article, we present an integrated triple-mode wireless power transmitter unit (TWPTU) circuit supporting all three alliance for wireless power (A4WP), wireless power consortium (WPC), and power matters alliance (PMA) standards, simultaneously
Publikováno v:
IEEE Transactions on Power Electronics. 36:11183-11195
In megahertz (MHz) wireless power transfer (WPT) systems, a varying reflected reactance due to a changing final load deteriorates the overall system performance, such as efficiency and output voltage stability. This article aims to achieve a compact
Autor:
Allen G. Morinec, Gregory D. Durgin, Lancina Djibo, Rafael R. Figueroa, Ethan J. Jones, Sebastian Tapias
Publikováno v:
IEEE Journal of Radio Frequency Identification. 5:335-342
This paper introduces a wireless power transfer system using a 5-coil asymmetric topology to mitigate range limitations when powering devices requiring small coils. The efficiency of a traditionally coupled wireless power transfer system falls sharpl
Autor:
Siqi Liu, Zuomin Yang, Yuqian He, Hongqi Zhang, Xianmin Zhang, Xiaodan Pang, Lu Zhang, Mengyao Qiao, Xianbin Yu, Shiwei Wang, Zijie Lu
Publikováno v:
Journal of Lightwave Technology. 39:5783-5790
Photonics-aided terahertz (THz) wireless systems have been progressively developed to accommodate the forthcoming wireless communication with extremely high data rates in recent years. However, restrained by the obtainable signal-to-noise ratio (SNR)
Autor:
Ken-Huang Lin, Ming-Lung Kung
Publikováno v:
IEEE Microwave and Wireless Components Letters. 30:1108-1111
A dual-band wireless power transfer (WPT) system is proposed to satisfy multiple distinct-band WPT demands. A power amplifier combined with a dual-band output matching coil, which is relatively compact, is adopted to enable asynchronous two-band powe