Results 231 to 240 of about 2,310,681 (269)
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Nature Materials, 2007
Numerous prototypes of electric power devices based on high-temperature superconductors have been successfully demonstrated. Materials research over the next decade will improve cost-performance and accelerate commercialization.
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Numerous prototypes of electric power devices based on high-temperature superconductors have been successfully demonstrated. Materials research over the next decade will improve cost-performance and accelerate commercialization.
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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-Availability Power for MX
IEEE Power Engineering Review, 1982With modern computer-based analyses it was sible to optimize an extensive power transmission and distribution network for supplying power to MX missile shelter sites. This network would serve some 4600 of these sites, located in suitable contiguous areas, with the shelter sites spaced one mile apart.
H. Oman, C. Bannon
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2006 IEEE LEOS Annual Meeting Conference Proceedings, 2004
The 20-year-evolution of high-power laser diodes with a multitude of device designs that explore various practical applications is presented. The four major applications for high-power diode lasers, namely pumps for EDFAs, YAG rods, disk lasers and fiber lasers have a tremendous impact on the selection process in this evolution.
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The 20-year-evolution of high-power laser diodes with a multitude of device designs that explore various practical applications is presented. The four major applications for high-power diode lasers, namely pumps for EDFAs, YAG rods, disk lasers and fiber lasers have a tremendous impact on the selection process in this evolution.
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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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A High Power Attenuator for Microwaves
Review of Scientific Instruments, 1949A high power variable attenuator has been developed for use in 10-cm wave guide transmission lines. The attenuating material is a liquid which serves also to transfer the absorbed energy. The attenuator can handle power levels up to 100 watts, has a power standing wave ratio less than 1.1 to 1, and an attenuation which is variable from 1.5 db to 40 db.
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High-Power Microwave Photodiodes
Optical Fiber Communication Conference, 2014The talk reviews modified uni-traveling carrier photodiodes that are capable of delivering high RF output power levels of >1 Watt. Discrete photodiodes, balanced detectors, photodiode arrays, and waveguide photodiodes are discussed.
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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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IEEE Transactions on Microwave Theory and Techniques, 1958
In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
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In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
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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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