4GCプラズマリアクタンスアッテネータ

概要

論文の詳細を見る
The analysis of waveguide in which a dielectric material having the specific dielectric constant ε>1 is placed across the center of the waveguide is investigated theoretically very well. But the analysis of waveguide contained a dielectric material having ε<1 is not so studied. The dielectric constant of homogeneous and no loss plasma is showed by ε_p=1-(ω_p/ω)^2 and therefore it is less than unity. In this paper we analized the waveguide contained a plasma in the center of it when it was excited by the H_<01> mode wave. First, we calculated the eigenvalues of air region and plasma region in the guide by boundary value problem. Next, we calculated the electric field, cutoff wavelength and attenuation constant in the guide. When a plasma is placed in the guide, the cutoff wavelength becomes shorter than the one in empty guide. Then the wave transmitting in the plasma guide attenuates by the dielectric constant of plasma. Therefore we can use it as an attenuator of microwave.
山梨大学の論文
1967-12-20