Title :
Prediction of Multipactor Breakdown Thresholds in Coaxial Transmission Lines for Traveling, Standing, and Mixed Waves
Author :
Pérez, Antonio M. ; Tienda, Carolina ; Vicente, Carlos ; Anza, Sergio ; Gil, Jordi ; Gimeno, Benito ; Boria, Vicente E. ; Raboso, David
Author_Institution :
Dept. de Comun., Univ. Politec. de Valencia, Valencia, Spain
Abstract :
In this paper, we present a numerical model for predicting the multipactor breakdown effect in coaxial transmission lines. To validate this method, we have first compared our results with numerical data from other theoretical studies and with experimental measurements. Then, we have investigated the multipactor phenomena in coaxial lines considering three kinds of RF signals: traveling, standing, and mixed waves. From this paper, we conclude that different breakdown thresholds are obtained for any of the considered RF excitations under high values of frequency times gap product. This effect is attributed to the existence of regions with zero (or very low levels) electric field amplitude in the propagation direction, where electrons are absorbed before the discharge occurs.
Keywords :
electric breakdown; microwave switches; transmission lines; RF excitations; breakdown thresholds; coaxial transmission lines; discharge; mixed waves; multipactor; numerical model; standing waves; traveling waves; Attractors; breakdown threshold; coaxial lines; multipactor; traveling wave (TW), standing wave (SW), and mixed wave (MW);
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2009.2028428