Results 321 to 330 of about 9,509,423 (360)
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Applied Optics, 1976
High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
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High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
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4 GHz high-power high-efficiency pseudomorphic power HEMT
1993 IEEE MTT-S International Microwave Symposium Digest, 2002The power performance of 0.25- mu m*8-mm double recessed GaAs-based pseudomorphic high electron mobility transistors (PHEMTs) at 4 GHz is reported. The 0.25- mu m-gate-length PHEMTs exhibit typical gate-to-drain breakdown voltage of more than 20 V, peak transconductance of 430 mS/mm, and maximum drain current density of 450 mA/mm.
S.T. Fu +6 more
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High-Frequency and High-Power Capacitive Power Transfer Technology
2023Capacitive power transfer (CPT) technology offers a promising wireless power transfer approach using the coupling capacitance of metal plates, eliminating the need for metal cables. Emerging within the last two decades, CPT has demonstrated significant advantages, such as cost-effectiveness, lightweight design, absence of eddy-current losses, and ...
Yao Wang, Fei Lu, Karen Nan Miu
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Electrical Engineering, 1936
A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
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A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
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Development on high-power and high power density capacitor charging power supply
2014 17th International Symposium on Electromagnetic Launch Technology, 2014This paper discussed the high-power and the miniaturization technology of capacitor charging power supply. The design and implementation of parallel operating high power density CCPS prototype with "peak current shifting control" was described. The single CCPS prototype output power is 35kW and the whole output power of parallel operating CCPS is 70kW.
Gao Yinghui +6 more
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A mobile, high-power, high-energy pulsed-power system
2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC), 2012A high-power, high-energy pulsed-power generator, based on a 415 kJ / 22 kV capacitor bank, has recently been developed and tested indoor at Loughborough University. The generator can drive a high-impedance system, generating a total electrical power of many GW while depositing Joule energy of many tens of kJ.
B. M. Novac +4 more
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High power and high efficiency Ka band power amplifier
2015 IEEE MTT-S International Microwave Symposium, 2015A 36 W Ka-band MMIC power amplifier using 0.2 um gate GaN HEMT technology is presented. The power was measured across 27 to 30 GHz with a minimum 30% PAE. A peak power of 40 W at 27 GHz was demonstrated. The MMIC area is a compact 13.5 mm^2 and uses 10.67 mm device periphery in the output stage.
Salah Din +2 more
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High-power, high-linearity photodiodes
26th International Conference on Indium Phosphide and Related Materials (IPRM), 2014This talk will describe modified uni-traveling carrier photodiodes (MUTCs) that have achieved high RF output power and high saturation current. Discrete photodiodes, 4×1 phase matched arrays, and balanced detectors will be discussed.
Joe C. Campbell +4 more
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A High Voltage High Power Switching Power Amplifier
2023 IEEE 5th International Conference on Power, Intelligent Computing and Systems (ICPICS), 2023Hongcai Zhang +5 more
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Powering High-Power LD Systems
2017A three-phase AC line is used to power multi-kilowatt laser systems. The block diagram of the three-phase LDD depicted in Fig. 9.1. It consists of an EMI filter, a three-phase bridge rectifier, a full-bridge (FB) inverter with a FB diode rectifier, an output inductor, and a control circuit.
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