Proceedings of the 15th IEEE International Vacuum Electronics Conference (IVEC-2014)
IVEC was originally created in 2000 by merging the U.S. Power Tubes Conferences and the European Space Agency TWTA Workshops. Now a fully international conference, IVEC is held every other year in the U.S., and in Europe and Asia alternately every fourth year. After the successful and enjoyable meeting in Paris, France in May, IVEC 2014 will return to its beautiful U.S. location in the city of Monterey.
In this paper, we analyze the coaxial line, which one or both electrodes have radial grooves, forming ribs. Such "ribbed" coaxial line represents a slow-wave structure (SWS), which characteristics depend on radiuses of the electrodes and the grooves' depth. Analysis of such complex SWS is significantly simplified in the case of relatively low frequencies, the case, which is the most interesting for the practical application of the elements fabricated from the "ribbed coaxial line."
A portable wireless device for recharging batteries of vehicles, phones, and another apparatus is offered and described in this paper. Application of novel antennas, formed by sections of coupled radial spirals with dimensions significantly less than the operating wavelength in free space, makes it possible effective transmission RF energy from one object to another without radiation into surrounding medium.
The plane TWT model on one impedance electrode is offered and analyzed in this paper. The "hot" dispersion equation for the adjacent to the impedance electrode a homogeneous sheet electron beam is found. Formulas for coefficients of the TWT characteristic equation, coupling and depression coefficients, are derived by differentiating the dispersion equation.
The numerical simulation of nonlinear time-dependent processes of the resonant interaction condensations charges in electron-positron substance with the formation of quantum macroplasmoid in terms of classical large particles model and quantum macroscopic model of single-particle wave functions has been conducted. Unlike the point kinematic approach of quantum electrodynamics, the particles are treated as deformable clots charge.
Electron-positron medium is considered as a promising implementation of powerful microwave devices on multibeam electron and positron streams. Simulation of the resonant interaction processes in electron-positron substance is carried out using macroscopic wave functions of electrons and positrons of macroscopic quantum theory. It is shown that at optimum space charge observed nonlinear resonance exchange process leading to the compensation of the Coulomb field.
Results of numerical modeling of slow-wave structure and the electron-optical system of wide-band TWT with continuous output power above 200 W and a gain of 23 dB, for use in vacuum-solid-state amplifier module X / Ku-band have been given.