本文设计了一款由低成本荧光管构成,工作频率为3 GHz的新型可重构等离子体角反射器天线,并采用电流密度卷积时域有限差分(JEC-FDTD)算法对该新型天线的辐射特性进行了计算和分析.计算结果表明,等离子体角反射器天线能够在微秒量级内完成全向、单波束及双波束的天线波形切换,实现天线辐射特性的快速动态重构.此外,与金属天线相比,该天线还具有工作频带宽更宽,天线增益高,能更好的将辐射波束向指定方向发射等优点.因此具有广阔的应用前景.
A novel reconfigurable plasma corner refiector antenna which is composed of low cost fluorescent lamps is proposed in this paper operating at 3 GHz.The radiation characeristic of plasma corner refiector antenna is also studied by JE convolution finite-difference time-domain (JEC-FDTD) method.The study result shows that the beam shape of the CRA can be changed from single-beam to dual-beam shapes and back to omnidirectional beam shape alternately within microseconds,and the radiation characeristic of antenna can rapid reconstruction.Furthermore,comparing with metal antenna,this antenna has wider bandwidth and high gain,which is able to better collimate the energy in specified direction.
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