Results 271 to 280 of about 93,397 (307)

Phase variation in free-electron laser amplifiers

IEEE Journal of Quantum Electronics, 1987
The evolution of the phase of the output radiation of free-electron laser amplifiers is investigated by means of a three-dimensional simulation code. The configuration employed consists of the propagation of a relativistic electron beam through a loss-free cylindrical waveguide in the presence of a helically symmetric wiggler and a uniform axial guide ...
Henry P. Freund, Achintya K. Ganguly
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Quasiballistic electronic transport in a tunneling hot-electron-transfer amplifier

Physical Review B, 1991
Ce transport est simule en le traitant comme une diode a barriere double ou le champ a travers chaque barriere peut varier independemment. Le courant est evalue en calculant le coefficient de transmission de la structure entiere en partant d'un cadre de transport coherent, puis en introduisant une diffusion elastique et inelastique des electrons entre ...
, Leo, , Bending
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The electronic negative feedback amplifier

1993
This chapter discusses the developments and the use of electronic negative feedback amplifier. The comparison in the developments in telephone and then wireless communication systems illustrates the great significance of Black's recognition that negative feedback has benefits other than simply providing stability.
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Tunnelling Hot Electron Transfer Amplifiers

1993
Abstract : Significant advances were achieved in tunneling hot electron amplifiers and in the understanding of hot electron transport in the work funded by the contract and carried out by M. Heiblum and his co-workers. The results of this work are described in detail in nine papers that have been published in the open literature.
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Electronically tunable class-E power amplifier

2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157), 2002
The 20-W class-E power amplifier (PA) described here is electronically tunable from 19 to 31 MHz (ratio 1.67). This PA employs a single RF-power MOSFET and operates from 25 V. The output-tuning network employs fixed inductors and high-voltage MOSFETs for variable capacitors.
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Precision Electronic Switching with Feedback Amplifiers

Proceedings of the IRE, 1956
Electronic-switching signal transmission devices have been, until recently, used principally for the simultaneous display of more than one waveform on a cathode ray oscillograph. During the past few years, however, in the field of electronic analog computers, several applications have required the development of electronic switches which have ...
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An overview of real‐world data sources for oncology and considerations for research

Ca-A Cancer Journal for Clinicians, 2022
Lynne Penberthy, Donna R Rivera, Jennifer L Lund, Msph   +2 more
exaly  

Amplifiers and electronics

AIP Conference Proceedings, 1998
G. Hall, R. G. Payne
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Electronic defects in metal oxide photocatalysts

Nature Reviews Materials, 2022
Ernest Pastor, Michael Sachs, Shababa Selim   +2 more
exaly  

Design, fabrication and assembly considerations for electronic systems made of fibre devices

Nature Reviews Materials, 2023
Huisheng Peng
exaly