Results 111 to 120 of about 16,343 (165)

Traveling-wave effects in microwave photonics

2009 IEEE LEOS Annual Meeting Conference Proceedings, 2009
Traveling-wave effects in microwave photonics are reviewed. We show how periodically loaded structures can be used to improve the microwave performance of traveling-wave photodetectors, series cascade lasers and microwave fiber-optic links.
Iezekiel, Stavros, Iezekiel, Stavros
openaire   +2 more sources

Relativistic effects in the traveling-wave amplifier

IEEE Transactions on Electron Devices, 1970
A relativistically correct large-signal theory is developed for the analysis of high-power, axially symmetric traveling-wave amplifiers in order to investigate the physical phenomena involved in the interaction process. The nonlinear integro-differential system equations are developed from the Lorentz force equation, the one-dimensional equivalent ...
P.J. Tallerico, J.E. Rowe
openaire   +1 more source

Travelling-wave Field-effect Transistors†

International Journal of Electronics, 1966
ABSTRACT The field-effect transistor (FET) has a very high input resistance compared with the conventional junction transistor. Unfortunately, however, the traiiHconductance, gm, is relatively low in the FET, and its cut-off frequency,fct, also is low because of the large input and output capacitances.
ATSUSHI ABE, JUN-ICHI NISHTZAWA
openaire   +1 more source

Effect of Travelling Waves on Tunnels in Soft Soil

2018
The paper proposes a three-dimensional numerical model able to catch the main deformation patterns of the soil and of an underground tunnel structure subjected to non-uniform seismic shaking. The proposed 3D FE model for instance, investigate the effect of the non-uniform seismic loading condition due to the wave passage along the longitudinal axis of ...
Fabozzi S., Bilotta E., Yu H., Yuan Y.
openaire   +2 more sources

Gallium arsenide traveling-wave field-effect transistors

IEEE Transactions on Electron Devices, 1985
The design, modeling, and fabrication of a GaAs traveling-wave field-effect transistor (TWF) is reported. The TWF described is a device with a single continuous 1-µm-long gate and a total width of 3 mm which shows flat band gain from 1 to 10 GHz with the potential of much wider band performance (1-40 GHz) and high gains.
Davies, I., Oxley, C. H., Holden, A. J., Daniel, D. R., Rees, H. D.   +4 more
openaire   +1 more source

Effect of Corona on Travelling Waves

Nature, 1960
A NEW phenomenon of impulse corona has been observed with voltage waves of relatively long wave-fronts on a 33-kV. overhead line. The wave-shape at the sending end is 5.7/19.3 µsec. nominal. The accompanying oscillograms show typical waves recorded at a point 2.08 miles away.
openaire   +1 more source

Coupled effects of chemotaxis and growth on traveling bacterial waves

Journal of Contaminant Hydrology, 2014
Traveling bacterial waves are capable of improving contaminant remediation in the subsurface. It is fairly well understood how bacterial chemotaxis and growth separately affect the formation and propagation of such waves. However, their interaction is not well understood.
Zhifeng Yan, Edward J. Bouwer, Markus Hilpert   +2 more
openaire   +2 more sources

Effective traveling-wave excitation below the speed of light

Optics Letters, 2001
We demonstrate that effective traveling-wave excitation of high-gain amplifiers requires velocities that are remarkably slower than the velocity of light. Experiments with a femtosecond-laser-pumped molecular hydrogen laser exhibit pronounced enhancement of the intensity if an excitation velocity that is slower than the velocity of light is employed ...
R, Tommasini, E E, Fill
openaire   +2 more sources

Model Equations and Traveling Wave Solutions for Shallow-Water Waves with the Coriolis Effect

Journal of Nonlinear Science, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guilong Gui, Yue Liu, Ting Luo
openaire   +2 more sources

Characterization of Wave Propagation on Traveling-Wave Field Effect Transistors

Japanese Journal of Applied Physics, 1998
The wave propagation characteristics along the electrodes of traveling-wave field effect transistors (TW-FETs) are described. Due to the fine gate structure of present high-speed FETs, the performance is greatly influenced by the electromagnetic coupling between the gate line and the drain line.
Koichi Narahara Koichi Narahara, Taiichi Otsuji Taiichi Otsuji   +1 more
openaire   +1 more source