Results 21 to 30 of about 12,388 (315)
IEEE Access, 2021 A new concept of broadband equal-split coupled-line directional couplers is proposed. The proposed couplers are based on coupled-line sections, all having the same coupling coefficient, and feature frequency characteristics similar to the ones obtained ...
Kinga Gawel +5 more
doaj +1 more source
Heterogeneously integrated flexible microwave amplifiers on a cellulose nanofibril substrate
Nature Communications, 2020 Though flexible microwave integrated circuits (MICs) are desirable for the construction of functional microwave amplifier circuits, realizing low cost III-V-based MMICs remains a challenge.
Huilong Zhang +15 more
doaj +1 more source
Cavity electromechanics with parametric mechanical driving
Nature Communications, 2020 Microwave circuits are interesting tools for microwave optomechanics and quantum information processing. Here, the authors demonstrate a phase-sensitive microwave amplifier by using parametric frequency modulation of a MHz mechanical nanobeam integrated ...
D. Bothner +5 more
doaj +1 more source
A single‐layered balanced filtering crossover with high selectivity based on square patch resonator
IET Microwaves, Antennas & Propagation, 2023 A new design of single‐layered balanced filtering crossover with high selectivity based on square patch resonator is proposed. Originated from the degenerate modes, that is, TM12 and TM21 on square patch resonators, the feasibility of intrinsic common ...
Yi Li, Jianpeng Wang, Lei Zhu, Wen Wu
doaj +1 more source
Advanced Functional Materials, EarlyView.HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan +9 more
wiley +1 more source
Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures
Advanced Functional Materials, EarlyView.3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina +11 more
wiley +1 more source
Microelectronics Reliability, 1973 マイクロ波ICは, マイクロ波機器の小形・軽量化, 高信頼度化, 経済化を目的に開発されたもので, この数年間に著しい発展をとげた.製造技術の面にはまだ問題が残されているものの, 今後マイクロ波ICの適用により新たな需要が開かれ, 各分野での広い利用が期待されている.本文はマイクロ波ICを分布定数型と集中定数型に大別し, 基本的な構成素子の設計法, 高周波限界, 特徴などを中心に解説したものである.
openaire +3 more sources
Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production
Advanced Functional Materials, EarlyView.Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen +4 more
wiley +1 more source
ChipBuilding communication links among multiple users in a scalable and robust way is a key objective in achieving large-scale quantum networks. In a realistic scenario, noise from the coexisting classical light is inevitable and can ultimately disrupt the ...
Xu Jing +13 more
doaj +1 more source
International Journal of Telemedicine and Applications, 2008 A new system-on-a-chip radar sensor for next-generation wearable wireless interface applied to the human health care and safeguard is presented. The system overview is provided and the feasibility study of the radar sensor is presented.
Domenico Zito +5 more
doaj +1 more source