Results 81 to 90 of about 6,979 (259)
Low-current Gunn diodes based on gallium arsenide for millimeter-wave devices
Технологія та конструювання в електронній апаратурі, 2005 A hardware implementation of multichannel domestic millimeter-wave therapy devices based on Gunn diodes operating in the frequency ranges of 42–53 GHz and 56–65 GHz with operating currents below 120 mA has been carried out. New technologies for forming a
A. G. Yatsunenko +3 more
doaj
A Dual‐Functional Electrolyte Additive for Highly Reversible Zinc‐Ion Batteries
Advanced Functional Materials, EarlyView.This study introduces tetrabutylammonium bromide (TBAB) as a dual‐function additive for aqueous zinc‐ion batteries. TBAB disrupts the hydrogen‐bond network of water while TBA+ adsorbs on Zn to improve interfacial wettability and regulate Zn2+ flux, resulting in suppressed dendrite growth and parasitic reactions. This synergy extended the lifespan of Zn|
Shirui Zhang +9 more
wiley +1 more source
Semiconductor Devices for Millimeter-Wave Repeaters
The Journal of the Institute of Television Engineers of Japan, 1972 主として電電公社通研で行なわれてきたミリメートル波ダイオードの研究結果につき述べた.40～80GHz帯を使用する実用的なミリ波伝送方式に必要とされる送受信周波数変換器, 周波数逓倍器にはGaAsを用いたショットキーバリヤダイオードおよび拡散ダイオードが良好な性能をもって使用されうる見通しがついた.ミリ波直接発振源としてのインパットダイオードについても, 実験室的には漸次方式実験に供しうるものが得られつつある.
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Advanced Functional Materials, EarlyView.A dye‐based photoinitiator acting as a structure‐directing element, guides the formation of a cholesteric polymer network that behaves as a chirped photonic structure with dissipative chiral coupling. Photopolymerization freezes a depth‐dependent helical pitch, broadening the Bragg resonance spectrum.
Alfredo Mazzulla +2 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son +5 more
wiley +1 more source
MicromachinesThis paper presents a novel approach to fabricate substrate integrated waveguides (SIWs) on glass substrates with tin (Sn) through glass vias (TGVs) tailored for millimeter-wave applications.
Seung-Han Chung +6 more
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A Compact V-Band Planar Gap-Coupled $4\times 1$ Antenna Array: Improved Design and Analysis
IEEE Access, 2017 In this paper, a broadband 60-GHz millimeter-wave 4 x 1 microstrip patch antenna array using the gap-coupled technique is presented and analyzed.
Chaouki Hannachi, Serioja Ovidiu Tatu
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Real-Time Positioning Based on Millimeter Wave Device to Device Communications
IEEE Access, 2016 Current generation mobile wireless communication networks are not suitable for real-time positioning applications because timing information is not readily available. Fifth generation (5G) cellular networks provide device to device real-time communications which can be used for real-time positioning. Millimeter-wave (mmWave) transmission is regarded as
Xue-rong Cui +3 more
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Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport
Advanced Functional Materials, EarlyView.This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan +9 more
wiley +1 more source
IEEE AccessThis paper presents a reconfigurable antenna that can be applied to sub-6 GHz, millimeter-wave band and D-band for wearable mobile watches. Owing to the compact size of wearable devices, their close proximity to the human body, and the requirement for ...
Ming-An Chung +2 more
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