Proceedings of the 18th IEEE International Vacuum Electronic Conference (IVEC-2017), London, ISBN 978-1-5090-5916-4/17
The 18th International Vacuum Electronics Conference (IVEC 2017) helded on 24-26 April 2017 in London, UK. With technical co-sponsorship from the IEEE Electron Devices Society (EDS), the conference provide a forum for scientists and engineers from around the globe to present the latest developments in vacuum electronics technology at frequencies ranging from the UHF to THz frequency bands. 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.
A TWT model formed by a meta-magnetic plate and a metal screen is offered and analyzed. The dispersion equation of the model in the presence of a homogeneous electron beam filling the space between the plate and the screen is derived and solved. The coupling and depression coefficients are calculated by the method of differentiation the dispersion equation. The calculated characteristics are compared with the TWT models on a dielectric plate and an “impedance” comb.
The investigation of microwave sensor on the planar mushroom-shaped metamaterial is considered. The results of numerical simulation microwave sensor for measurement of physical quantities and monitoring parameters of technological processes using CST Studio Suite are presented. Also it is shown that the microstrip sensor has geometrical dimensions much smaller operating wavelength while maintaining a high Q-factor structure.
The paper presents the results of computer simulation of electromagnetic wave propagation in a standard rectangular waveguide R32 type with the cross-section 72,14х34,04 mm, one of the wide walls of which are made in the form of the mushroom-shaped metamaterial magnetic wall. Using the electromagnetic simulation methods the dependences of the field distribution during simulation of the fundamental mode H10, the characteristics of the complex reflection coefficient S11 on the frequency and the near field radiation pattern of the waveguide are obtained.