Abstract
A theoretical model in terms of RF and electric field is proposed for the attenuation and reflection of TEM and TE microwaves through a dielectric with multipactor. The reflected power is much lower than the attenuated power. Also, both ratios of reflected and attenuated powers increase dramatically when the RF decreases to be near the cutoff frequency for TE microwaves. The attenuation ratio can be larger than 10% and smaller than 0.1%, while previously, it is usually considered as a small constant. The phenomena of power attenuation and reflection are also observed directly by electromagnetic particle-in-cell simulations, and simulation results are consistent with theoretical results.
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