大型波导缝隙阵与天线罩的一体化高效精确分析

Efficient and accurate analysis of large slotted-waveguide antenna arrays with radome

针对带罩大型波导缝隙阵的辐射特性分析,基于并行区域分解合元极算法,提出一种多区域的精确高效算法.将每根波导缝隙天线以及天线罩实体目标作为一个有限元计算区域,各区域之间通过基于各区域表面的边界积分方程进行耦合,并于天线罩内部应用区域分解技术来降低计算资源实现高效计算.与传统单区域合元极的数值结果比较验证了该多区域方法的精确高效性,还计算分析了带罩大型波导缝隙阵的频域辐射特性.

An teristic analysis of position algorithm accurate and efficient multi-domain analysis approach is presented for radiation charac- radome-enclosed large slotted-waveguide antenna arrays based on parallel domain decom- （DDA） finite element-boundary integral-multilevel fast multipole algorithm （FE-BI- MLFMA）. Each slotted-waveguide antenna and the radome are taken as sub-domains by employing the fi- nite element method（FEM） based on the regional entities, and the sub-domains communicate through the boundary integral （BI） equation. In the radome FEM domain, the DDA can be applied to the FE-BI- MLFMA to greatly reduce the computation resource and achieve high efficiency. The comparisons of the numerical results method has good with the conventional single-domain FE-BI-MLFMA demonstrate that the multi-domain accuracy and high e slotted-waveguide antenna arrays wit Keywords waveguide ant fficiency. The frequency-domain radiation characteristics of the large h radome are calculated and studied.