%0 Journal Article
%T Calculation of dispersion relation and radiation pattern of plasma antenna<br>等离子体天线色散关系和辐射场数值计算
%A Zhao Guo-Wei
%A Xu Yue-Min
%A Chen Cheng
%A <br>赵国伟
%A 徐跃民
%A 陈诚
%J 物理学报
%D 2007
%I 
%X 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 tube,and 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.
%K plasma antenna
%K dispersion relation
%K gain
%K radiation pattern<br>等离子体天线
%K 色散关系
%K 增益
%K 辐射方向图
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=6374D8DD88452111&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=9CF7A0430CBB2DFD&sid=1FDE7E5CB61196EA&eid=DED152D7363B951D&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=19