Results 11 to 20 of about 277,685 (261)

Power Efficient Connected Topologies in Ad Hoc Networks

open access: yes10th IEEE Symposium on Computers and Communications (ISCC'05), 2005
Power efficient topologies in an ad-hoc network can reduce battery usage and increase the lifetime of a network. Topology control algorithms including a local minimum spanning tree (LMST), distributed relative neighbourhood graph (DRNG) and K-Neigh graphs are computed by using the location or the distance information of the network nodes.
G. Srivastava   +2 more
openaire   +2 more sources

A 28-GHz Cascode Inverse Class-D Power Amplifier Utilizing Pulse Injection in 22-nm FDSOI

open access: yesIEEE Access, 2020
Current Mode Class-D (CMCD) Power Amplifiers are of particular interest in outphasing transmitters or Doherty configuration. This is because the output capacitance can be absorbed in the RLC output matching network and 100% theoretical efficiency.
Nourhan Elsayed   +3 more
doaj   +1 more source

Power added efficiency optimisation of microwave transistor amplifier

open access: yesElectronics Letters, 1989
A high-efficiency microwave amplifier design routine which optimises the power added efficiency of any class (A, AB, B, C, D, E,. . .) of amplifier is reported. It has the advantage of a reduced variable number, and easy synthesis for input-output circuits.
A. Algani, H. Wang, A. Konczykowska
openaire   +1 more source

High Power AlN/GaN HEMTs with record power-added-efficiency >70% at 40 GHz [PDF]

open access: yes2020 IEEE/MTT-S International Microwave Symposium (IMS), 2020
We report on breakthrough power-added-efficiency (PAE) Q-band performances using a vertically scaled AlN/GaN HEMT technology. The comparison between a 3 nm and 4 nm barrier thickness shows both superior performance and robustness for the thinner barrier layer attributed to the reduced mechanical strain into the heterostructure.
Harrouche, Kathia   +3 more
openaire   +1 more source

An Approach to Increase Power-Added Efficiency in a 5 GHz Class E Power Amplifier in 0.18 µm CMOS Technology

open access: yesIET Circuits, Devices and Systems, 2023
A new approach to increasing the power-added efficiency (PAE) of a class E power amplifier (PA) is proposed in this paper. The PA operates at a 5 GHz frequency and a reactance compensation technique is utilized to maximize the bandwidth at the operating ...
Hemad Heidari Jobaneh
doaj   +1 more source

A Novel 4H-SiC MESFET with a Heavily Doped Region, a Lightly Doped Region and an Insulated Region

open access: yesMicromachines, 2021
A novel 4H-SiC MESFET was presented, and its direct current (DC), alternating current (AC) characteristics and power added efficiency (PAE) were studied.
Hujun Jia   +4 more
doaj   +1 more source

Design and Optimizing of a GaN HEMT Power Amplifier Based on the Inclined Planes System Optimization Algorithm for Wireless Applications

open access: yesIranian Journal of Electrical and Electronic Engineering, 2022
Power amplifier is one of the main components in the RF transmitters. It must provide various stringent features that can lead to complicating the design.
M. Soruri, S. M. Razavi, M. Forouzanfar
doaj  

Maximizing Transfer Efficiency with an Adaptive Wireless Power Transfer System for Variable Load Applications

open access: yesEnergies, 2021
Electronic devices usually operate in a variable loading condition and the power transfer efficiency of the accompanying wireless power transfer (WPT) method should be optimizable to a variable load.
Jung-Hoon Cho   +2 more
doaj   +1 more source

Novel High-Energy-Efficiency AlGaN/GaN HEMT with High Gate and Multi-Recessed Buffer

open access: yesMicromachines, 2019
A novel AlGaN/GaN high-electron-mobility transistor (HEMT) with a high gate and a multi-recessed buffer (HGMRB) for high-energy-efficiency applications is proposed, and the mechanism of the device is investigated using technology computer aided design ...
Shunwei Zhu   +7 more
doaj   +1 more source

Numerical prediction method of shafting power characteristics of free self-propelled ship in waves

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveTo investigate ship power characteristics and the difference between the towing model and self-propulsion model for ship motion response in waves, numerical simulations of ship self-propulsion performance in waves are carried out. MethodsIn this
Jiawei YU   +4 more
doaj   +1 more source

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