Open AccessCalculation of dispersion relation and radiation pattern of plasma antenna
Author(s) -
Guowei Zhao,
Yang Xu,
Chen Cheng
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.5298
Subject(s) - radiation pattern , antenna (radio) , plasma , radius , collision frequency , electromagnetic electron wave , optics , physics , attenuation , dispersion relation , microwave , plasma parameters , radiation , materials science , radiation properties , dielectric , electromagnetic radiation , optoelectronics , telecommunications , computer security , quantum mechanics , computer science
We investigated some important plasma antenna parameters, such as the transmission characteristics of a microwave propagating along the cylindrical symmetric plasma antenna, dispersion relations, radiation pattern and gain. By analyzing the dielectric constant of the tube material, the outer and inner radius, the density of the plasma and the collision frequency, we found that to minimize the attenuation of wave propagation along the plasma antenna, one should increase the density of the plasma, decrease the collision frequency, increase the radius of the plasma, increase the thickness of tubeand decrease the dielectric constant. We also calculated the radiation pattern of the plasma antenna and the change of gain under different conditions. These results are useful for the design of plasma antenna.