Comparative Study of Multipactor Effect in Rectangular and Parallel-Plate Waveguides Partially Loaded with Dielectric

Abstract

In this work, a comparative study of the susceptibility chart in a partially dielectric-loaded rectangular wave-guide and in its equivalent partially dielectric-loaded parallel-plate wave-guide with the same height is performed. This study shows how the inhomogeneity of the electric field inside the rectangular wave-guide modifies the edges of the multipactor susceptibility chart with respect to that predicted by the parallel-plate wave-guide case. Moreover, comparisons of the evolution of the population and the trajectory of the effective electron and the DC field appearing in the wave-guide in a point well inside the multipactor region obtained with both models are performed, showing some quantitative differences in the multipactor evolution, but a similar qualitative behaviour is observed.