首页> 外文会议>IEEE Antennas and Propagation Society International Symposium >A Mode Matching - Finite Element - Spectral Decomposition Approach for the Analysis of Finite Arrays of Horn Antennas
【24h】

A Mode Matching - Finite Element - Spectral Decomposition Approach for the Analysis of Finite Arrays of Horn Antennas

机译:一种模式匹配 - 有限元 - 喇叭天线有限阵列分析的有限元光谱分解方法

获取原文

摘要

A new hybrid Mode Matching-Finite Element Method (MM-FEM) [1] and Spectral Decomposition (SD) approach [2][3] is presented for the analysis of large arrays of horn antennas. The proposed methodology (MM-FEM-SD) retains advantages from the three involved techniques. The SD approach is used to reduce the finite large problem to a summation of infinite periodic problems through a Fast Fourier Transform (FFT) technique or by means of a Fourier closed form solution [4]. Floquet's expansion enables us to reduce the analysis to a single radiating element, whereas SD accounts for the presence of the remaining antennas by a proper phase shift. A key step in the analysis consists in resorting to a stepped waveguide model of the longitudinal inner profile of the elementary horn antenna. A MM procedure is employed to ensure the continuity of transverse fields over each waveguide discontinuity and over the radiating aperture. Floquet's modes and TE/TM waveguide modes have been exploited to compute the Generalized Scattering Matrix (GSM) of the radiating element. A two dimensional FE approach with tangential vector interpolation basis functions is employed to solve the eigenvectors and eigenvalues problem of unconventional shaped radiating apertures or waveguide sections. The flexibility of the FE method allow us to model complex irregular structures providing a very high degree of generality. The efficiency of MM and SD techniques enables us to solve very large array problems typically untreatable with fully three-dimensional approaches. A brief formulation of the proposed method is presented in the next section. Finally, some preliminary numerical results are shown to demonstrate the effectiveness of this approach.
机译:提供了一种新的混合模式匹配 - 有限元方法(MM-FEM)[1]和光谱分解(SD)方法[2] [3]用于分析大喇叭天线阵列。所提出的方法(MM-FEM-SD)保留了三种涉及的技术的优点。 SD方法用于通过快速傅里叶变换(FFT)技术或傅立叶闭合溶液[4]将有限大问题降低到无限周期性问题的总和[4]。 FOROQUET的扩展使我们能够将分析降低到单个辐射元件,而SD占据了剩余天线的存在,通过适当的相移。分析中的一个关键步骤包括借助基本喇叭天线的纵向内部轮廓的阶梯式波导模型。采用MM程序来确保每个波导不连续和辐射孔上的横场的连续性。已经利用FLOQUET的模式和TE / TM波导模式来计算辐射元件的广义散射矩阵(GSM)。使用具有切向矢量插值基函数的二维Fe方法来解决非传统形状辐射孔或波导部分的特征向量和特征值问题。 Fe方法的灵活性使我们能够建模复杂的不规则结构,提供非常高的一般性。 MM和SD技术的效率使我们能够以完全三维方法解决非常大的阵列问题,通常是未经处理的。在下一节中提出了对该方法的简要制剂。最后,显示了一些初步数值结果来证明这种方法的有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号