金属多面体上低剖面天线的矩量法分析

Analysis of low-profile antenna on a conducting polyhedron by MoM

采用矩量法对任意形状导体上的低剖面天线进行了整体分析,其中,导体采用三角形面元矢量基函数、细线结构采用三角形基函数、线面连接处采用特殊的基函数,在处理积分奇异时,通过坐标变换、积分转化、降维处理实现了奇异积分的精确快速计算,以平板单极子天线为例,验证了该方法的有效性.利用该方法对金属立方体上的低剖面电小环天线特性进行了分析,得出的结论对设计复杂载体上低剖面天线或天线阵有一定的参考价值.

Low-profile antenna on an arbitrarily conducting body are analyzed as a whole by the method of moment（MoM）.The Rao-Wilton-Gisson（RWG） basis function and triangular basis function are chosen to discretizate the conducting body and thin wire,respectively,and a special basis function is used to represent the current on the wire/surface junctions.The coordinate transformations,integral transformations and dimensionality reduction are employed to achieve the precise and rapid calculation of the singular integral.The availability of the method is demonstrated by a monopole mounted at the square plate.Finally,low-profile ring antennas mounted on the conducting cube are studied and numerical results are valuable to the low-profile antenna or antenna array design on complex targets.