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The relationship between emitted energy spectrum and multipactor threshold of impedance transformer is investigated numerically in this paper. Secondary electron yield remains the same, while the emitted energy spectrum changes. Numerical simulations are provided for different cases of emitted energy spectrum. We analyze the practicability of this method in theory and simulation. Simulation results...
It has been a big challenge that breakdown occurs due to multipactor in the high-power antenna system. A novel approach was proposed which introduced porous structure on the surface of microwave components to reduce the secondary emission yield and improve the multipactor threshold. In addition, the simulation method of multipactor was established for the analysis of microwave components with the...
A novel numerical scheme is proposed in the hybrid numerical method, combining the conformal time-domain finite integral theorem with the particle-in-cell method, to analyze the multipactor in waveguide devices more efficiently. In multipactor analysis, the electromagnetic waves and charged particles interact only in the interior regions of waveguide devices. Hence, elements outside the waveguide...
A three-dimensional numerical simulation method of multipactor in open-structured high-power microwave systems is presented in this work. This method considering the perfect absorption of electrons at open boundaries, the commonly used absorption method with perfect-matched layers in electro-magnetic simulations has been modified and an improved absorbing boundary has been established which avoids...
A novel method for the multipactor breakdown inhibiting of microwave components is described in this paper. It is a new surface treatment with regular porous structure on silver plated by the photolithography technique. The influences of the regular porous structure for secondary emission are studied with theoretic analysis and experimental research. The abilities to increase the multipactor power...
A novel method for the multipactor breakdown inhibiting of microwave components is described in this paper. It is a new surface treatment with regular porous structure on silver plated by the photolithography technique. The influences of the regular porous structure for secondary emission are studied with theoretic analysis and experimental research. The abilities to increase the multipactor power...
A self-consistent simulation method for the prediction of multipactor breakdown threshold in passive microwave components is presented in this paper. To model the motion of electrons during the entire multipactor process, three-dimensional particle models of primary and secondary electrons are established and a self-consistent algorithm is put forward to drive them. Moreover, the Coulomb repulsion...
A self-consistent simulation method for the prediction of multipactor breakdown threshold in passive microwave components is presented in this paper. To model the motion of electrons during the entire multipactor process, three-dimensional particle models of primary and secondary electrons are established and a self-consistent algorithm is put forward to drive them. Moreover, the Coulomb repulsion...
An approach to predict multipactor breakdown threshold in microwave components using an electromagnetic-based Particle-In-Cell (PIC) simulation method is presented. Macro-particles, interacting with the electromagnetic fields, are used to model the kinetic motion of free electrons. Time evolution trend of the particle number at different transmitted power is put forward as criteria for the breakdown...
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