Title :
A multiresolution method for simulating infinite periodic arrays
Author :
Filipovic, Dejan S. ; Anderson, Lars S. ; Volakis, John L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
11/1/2000 12:00:00 AM
Abstract :
Hierarchical mixed-order tangential vector finite elements (TVFEs) for tetrahedra are attractive for accurate and efficient analysis of a wide class of electromagnetic radiation and scattering problems. They provide versatile geometrical modeling and accurate field representation by allowing combination of lowest and higher order TVFEs. In this letter, the finite-element boundary-integral (FE-BI) method with hierarchical TVFEs for tetrahedra is used for analysis of infinite, doubly periodic antenna arrays. It is shown that accurate prediction of array scanning properties can be obtained by using higher order TVFEs in the regions where large fields and rapid field variations are expected and lowest order TVFEs elsewhere. This is demonstrated in the case of a microstrip patch array
Keywords :
antenna arrays; boundary integral equations; finite element analysis; microstrip antenna arrays; periodic structures; scanning antennas; accurate field representation; array scanning properties; doubly periodic antenna arrays; electromagnetic radiation; electromagnetic scattering; finite-element boundary-integral method; geometrical modeling; hierarchical mixed-order tangential vector finite elements; infinite periodic arrays simulation; microstrip patch array; multiresolution method; tetrahedra; Antenna arrays; Boundary conditions; Computational modeling; Finite element methods; Geometry; Microstrip antenna arrays; Periodic structures; Phased arrays; Predictive models; Solid modeling;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
