Analysis of Multipactor Effect Using a Phase-Shift Keying Single-Carrier Digital Modulated Signal

The main aim of this paper is the analysis of the multipactor effect within a coaxial waveguide structure excited by a phase-shift keying single-carrier digital modulated signal. To reach this aim, we developed in-house a software code which is able to predict the RF multipactor input voltage threshold. This code is based on the single effective electron model, and considers the space charge effect. Numerical simulations are performed for binary phase-shift keying and quadrature phase-shift keying modulated signals. In addition, an experiment is carried out to validate the proposed theoretical model. We have demonstrated that the digital modulation of the single-carrier signal may modify the RF voltage threshold in comparison to the nonmodulated scenario. Good agreement between theory and experimental data is found.