Results 51 to 60 of about 90,040 (285)

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

Advanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai, Xiaoyu Huo, Xin Long, Enkang Fu, Xusong Gong, Lei Wei, Liang An   +6 more
wiley   +1 more source

RF Circuit Analysis of UWB Planar Log Periodic Antenna for 5G Communications Using Theory of Characteristic Modes

IEEE Open Journal of Antennas and Propagation
Fifth generation (5G) wireless communication systems demand compact and low-profile high gain wideband antenna. Planar log-periodic array antenna (pLPA) has such potential qualities for 5G base-station and user-devices.
P. Sumithra, Mohammed Gulam Nabi Alsath, K. J. Jegadishkumar, D. Kannadassan   +3 more
doaj   +1 more source

Mechanism of AlGaAs/InGaAs pHEMT Nonlinear Response Under High-Power Microwave Radiation

IEEE Journal of the Electron Devices Society, 2020
With the development of microelectronic technology, the reliability of devices in a complex electromagnetic environment has become one of the greatest challenges in the semiconductor industry.
Yu-Qian Liu, Chang-Chun Chai, Han Wu, Yu-Hang Zhang, Chun-Lei Shi, Yin-Tang Yang   +5 more
doaj   +1 more source

Risk Analysis of HPEM Threats for Linear RF Channel with Pyramid Horn Antenna Based on System-Level SPICE Modeling

Energies, 2022
High power electromagnetics (HPEMs) pose a potential threatening risk to the wireless communication system, especially according to the main coupling path of the RF front-end channel.
Chuanbao Du, Zhitong Cui, Congguang Mao, Jin Tian, Wei Wu, Wei Chen, Yang Qiu   +6 more
doaj   +1 more source

Diseño, simulación y prototipado de un transmitarray reconfigurable en banda Ku [PDF]

, 2008
The aim of this paper is to introduce some theory as well as prototype results of a Ku-band active transmitarray. Its architecture is based in two bi-dimensional radio interfaces interconected by a multiport microwave circuit.
Muñoz Acevedo, Alfonso, Padilla de La Torre, Pablo, Sierra Castañer, Manuel   +2 more
core  

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Transverse Resonance Technique for Analysis of Symmetrical Stub in Microstrip Transmission Line

Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2023
Open or short-circuit stubs in a strip (microstrip) transmission line are one of the most common elements of planar circuits used in numerous devices in the microwave frequency range: various types of filters, couplers, power amplifiers, antennas ...
Yu. V. Rassokhina, V. G. Krizhanovski
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

Advanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu, Taoyu Zou, Cheng‐Yan Xu, Liang Zhen, Yang Li, Yong‐Young Noh   +5 more
wiley   +1 more source

Inductive Frequency Selective Surface: An Application for Dichroic Sub-Reflectors

IEEE Access, 2020
An Inductive Frequency Selective Surface (IFSS) self-standing dichroic sub-reflector is presented, which allows the transmission of two frequency bands and reflection of a third band. The operating frequency of the sub-reflector is designed to work at Ku,
Juan A. Vasquez-Peralvo, Jose-Manuel Fernandez-Gonzalez, Pavel Valtr, Jonathan M. Rigelsford   +3 more
doaj   +1 more source

Optimization of Low-Frequency Magnetic Metamaterials for Efficiency Improvement in Magnetically Coupled Resonant Wireless Power Transfer Systems

IEEE Access, 2022
With the extensive applications of magnetically coupled resonant wireless power transfer (WPT), improving the power transfer efficiency (PTE) of WPT systems is critical. Magnetic metamaterials (MTMs) can effectively improve the PTE.
Wanlu Li, Fengqi Yu, Xinwei Rong, Heng Qin   +3 more
doaj   +1 more source