Results 71 to 80 of about 3,395 (261)

Antenna structures based on combined slot-vibrator emitters with impedance passive elements

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка
Relevance. The research is aimed at solving current problems related to the construction of mathematical models, methods and algorithms for calculating complex multi-element radiating structures, antenna systems and arrays, determining the physical ...
Berdnyk S. L.   +4 more
doaj   +1 more source

Switchable Long-Term Evolution/ Wireless Wide Area Network/ Wireless Local Area Network Multiple-Input and Multiple-Output Antenna System for Laptop Computers

open access: yesIEEE Access, 2017
This paper introduces a multiple-input and multiple-output (MIMO) antenna system for deployment in the closed hinge slot region of notebook computers for long-term evolution (LTE)/wireless wide area network (WWAN)/wireless local area network (WLAN ...
Shu-Chuan Chen, Chen-Shuo Fu
doaj   +1 more source

Overcoming Interfacial Hurdles in Solid‐State Aluminum Batteries for Safe and Energy‐Dense Storage

open access: yesAdvanced Science, EarlyView.
Solid‐state aluminum batteries (SSABs) promise high energy density and intrinsic safety but face severe solid–solid interfacial challenges. This review reveals the three core hurdles—anode passivation, cathode contact loss, and electrolyte grain boundary resistance and discusses strategies including artificial interphases, alloying, and composite ...
Yunlei Wang   +5 more
wiley   +1 more source

Regulating Droplet Dynamics via Wormlike Micelle Networks: From Splash Suppression to Precise Confined Spreading

open access: yesAdvanced Science, EarlyView.
As displayed in Graphical Abstract image.tif, a molecular‐design strategy precisely tailors high‐speed droplet dynamics through programmed surfactant co‐assembly. The structural transition into an entangled wormlike micelle network completely suppresses stochastic splashing on fibrous substrates.
Shuling Liu   +6 more
wiley   +1 more source

A Method for Low Sidelobe Substrate-Integrated Waveguide Slot Antenna Design Applied for Millimeter-Wave Radars

open access: yesRemote Sensing
With the development of millimeter-wave radar systems, substrate-integrated waveguide (SIW) slot antennas have been widely used. This paper presents a computational approach for calculating the equivalent normalized admittance of slot in low sidelobe SIW
Shuqi Wang, Bin Zhou, Guangyou Fang
doaj   +1 more source

Leading the Pack: Next‐Generation Batteries for Humanoid Robotics

open access: yesAdvanced Science, EarlyView.
Humanoid robots challenge traditional and anticipated energy technologies. Humanoid robot benchmarks of runtimes and energy demands for industry applications inform humanoid robot battery design choices at the cell level, pack level, and system level.
Matthew Bergschneider   +6 more
wiley   +1 more source

Gel Electrolytes for Flexible Zinc‐Air Batteries: Design, Challenges, and Perspectives

open access: yesAdvanced Science, EarlyView.
This review summarizes design strategies for gel electrolytes in flexible zinc‐air batteries, focusing on dendrite suppression, interfacial stability, and ultrathin architectures to enhance cycle life and energy density. ABSTRACT Flexible zinc‐air batteries (FZABs) have emerged as promising candidates for next‐generation flexible electronics and large ...
Yapeng Cao   +5 more
wiley   +1 more source

Design and Implementation of a 4x2 Diamond Patch Array Microstrip Antenna with I-Slot for 2.4 GHz Frequency

open access: yesJurnal Jaringan Telekomunikasi
As communication technology continues to evolve rapidly, particularly in the field of wireless communication, there is a growing demand for high-speed, efficient, and high-quality communication systems due to the increasing mobility of society ...
Ade Dwi Arya   +2 more
doaj   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Design and Implementation of Microstrip Antenna Hexagonal – Rectangular Patch 2x4 Array with H - Slot at 2.4 GHz Frequency

open access: yesJurnal Jaringan Telekomunikasi
Antenna microstrip is one of the lots of antennas used in system telecommunication specifically for microwave frequency. Antenna microstrip own a number of applications as in communication cellular and satellite, GPS, RFID, WiMax, radar, rectenna to use
Hanif Fergiawan   +2 more
doaj   +1 more source

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