采用球面建模的圆柱形扫描几何天线特性的数值结果

F. Borrelli, A. Capozzoli, C. Curcio, A. Liseno
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引用次数: 0

摘要

提出了一种采用长球面源建模的近场/远场技术。该方法是为可容纳在一个长条形球体内的长方形天线而设计的,并且可以应用于非定向天线或仅在一个远场切割上的定向天线。用长球面波函数(PSWFs)展开球面上电场的切向分量,使问题的未知量成为表示系数。这些系数与在圆柱形表面上测量的场的切向分量有关,并通过奇异值分解方法以正则化的方式确定。pswf是根据Adelman、Gumerov和Duraiswami设计的方法计算的。给出了数值结果。
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Numerical results for antenna characterization in a cylindrical scanning geometry using a spheroidal modelling
A Near-Field/Far-Field technique employing a prolate spheroidal modelling of the source is presented.The approach is devised for oblong antennas which can be accommodated within a prolate spheroid and can be applied to non-directive antennas or directive antennas on one far-field cut only. The tangential components of the electric field over the spheroidal surface are expanded by Prolate Spheroidal Wave Functions (PSWFs) so that the unknowns of the problem amount to be the representation coefficients. Such coefficients are related to the tangential components of the field measured on a cylindrical surface and are determined, in a regularized way, by a Singular Value Decomposition approach.The PSWFs are calculated according to the method devised by Adelman, Gumerov and Duraiswami.Numerical results presented.
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