Results 41 to 50 of about 980,794 (310)

High-Efficiency Power Amplifiers [PDF]

, 2018
Postprint (published version)
Velasco Quesada, Guillermo, Martínez García, Herminio, Conesa Roca, Alfons   +2 more
openaire   +2 more sources

Numerical Study on the Aerodynamic Performance and Noise of Composite Bionic Airfoils

Fluids
Bionic airfoils are an effective method to improve aerodynamic performance and reduce the noise of wind turbine blades. To explore the impact of the lower surface of bird wing airfoils on the aerodynamic performance and noise of blades, this study ...
Shunlong Su, Shenwei Xin, Xuemin Ye, Chunxi Li   +3 more
doaj   +1 more source

Numerical simulation on influence of noise barrier on thermal performance for natural draft wet cooling towers

Case Studies in Thermal Engineering, 2021
The noise barrier installed around the natural draft wet cooling tower can reduce the operating noise, but it will lead to an adverse effect on the thermal performance of the tower.
Zhirui Zheng, Deying Zhang, Lei Jiang, Zhengqing Zhang, Suoying He, Ming Gao   +5 more
doaj   +1 more source

Power balance and efficiency of metasurface antennas [PDF]

Scientific Reports, 2020
AbstractThis paper presents two methods for the efficient evaluation of the power balance in circular metasurface (MTS) antennas implementing arbitrary modulated surface impedances on a grounded dielectric slab. Both methods assume the surface current in the homogenized MTS to be known.
Bodehou M., Gonzalez-Ovejero D., Craeye C., Maci S., Huynen I., Martini E.   +5 more
openaire   +4 more sources

Energy efficiency of 2- Step power-clocks for adiabatic logic [PDF]

, 2016
The generation of power-clocks in adiabatic integrated circuits is investigated. Specifically, we consider the energy efficiency of a 2-step charging strategy based on a single tank-capacitor circuit. We have investigated the impact of various parameters
Raghav, H., Himadri Singh Raghav, Kale, I., Izzet Kale, Vivian A. Bartlett, Bartlett, V.   +5 more
core   +1 more source

Insight into the Impact of Blade Perforation on the Aerodynamics and Acoustics of a Two-Stage Variable-Pitch Axial Fan

Energies
For a two-stage variable-pitch axial fan, a perforation design in first-stage rotor blades was proposed to improve aerodynamic performance and reduce acoustic noise.
Chen Qiao, Xuemin Ye, Yunhao Wu, Chunxi Li   +3 more
doaj   +1 more source

Optimal Scheduling of Integrated Community Energy Systems Based on Twin Data Considering Equipment Efficiency Correction Models

Energies, 2023
The economics of integrated community energy system (ICES) dispatch schemes are influenced by the accuracy of the parameters of the different energy-conversion-equipment models.
Zeli Ye, Wentao Huang, Jinfeng Huang, Jun He, Chengxi Li, Yan Feng   +5 more
doaj   +1 more source

An approach to harmonic load- and source-pull measurements for high-efficiency PA design [PDF]

, 2004
High-efficiency power-amplifier design requires numerous efforts to investigate both input and output harmonic terminations effects. A simplified theoretical approach to clarify the relevance of such terminations is presented here, and design criteria to
Ernesto Limiti, F. GIANNINI, Colantonio, P, COLANTONIO, PAOLO, Teppati, Valeria, Colantonio, P., E. LIMITI, Giannini, F., Limiti, E., Limiti, E, GIANNINI, FRANCO, Teppati, V, Teppati, V., P. COLANTONIO, LIMITI, ERNESTO, Giannini, F, Paolo Colantonio, Student Member, Franco Giannini   +18 more
core   +1 more source

Optimization of Power Transfer Efficiency and Energy Efficiency for Wireless-Powered Systems With Massive MIMO [PDF]

IEEE Transactions on Wireless Communications, 2018
published
Talha Ahmed Khan, Ali Yazdan 0001, Robert W. Heath Jr.   +2 more
openaire   +2 more sources

Investigating the Influence of Pore Shape on Shale Gas Recovery with CO₂ Injection Using Molecular Simulation

Energies, 2023
Carbon-dioxide-enhanced shale gas recovery technology has significant potential for large-scale emissions reduction and can help achieve carbon neutrality targets.
Juan Zhou, Shiwang Gao, Lianbo Liu, Tieya Jing, Qian Mao, Mingyu Zhu, Wentao Zhao, Bingxiao Du, Xu Zhang, Yuling Shen   +9 more
doaj   +1 more source