Title :
The characteristics of scattering from finite arrays of nonuniform cylindrical cavities in a ground plane
Author :
Villegas, F.J. ; Rahmat-Samii, Y. ; Jackson, D.R.
Author_Institution :
California Univ., Los Angeles, CA, USA
Abstract :
We make use of a hybrid method-of-moments formulation for the solution of scattering from finite, nonuniform, one- and two-dimensional arrays of cylindrical cavities in an infinite ground plane. We show that the method is rather versatile, with the capability to handle both small and large finite arrays of dissimilar elements, including a dielectric superstrate layer if desired. A modified AEF definition, specifically developed for scattering type problems, has been employed to make the analysis of very large arrays tenable. Scattering from novel non-periodic topologies is accommodated with the use of a ´masking´ procedure. We illustrate the overall versatility, accuracy and efficiency of the method with a survey of various applications of interest to the antenna and microwave engineering communities.
Keywords :
antenna arrays; antenna theory; electromagnetic wave scattering; method of moments; active element factor; cylindrical cavities; dielectric superstrate layer; dissimilar elements; finite arrays; hybrid method-of-moments formulation; infinite ground plane; masking procedure; modified AEF definition; non periodic topologies; nonuniform arrays; one-dimensional arrays; scattering; two-dimensional arrays; very large arrays; Apertures; Approximation algorithms; Current distribution; Message-oriented middleware; Microwave antennas; Microwave theory and techniques; Periodic structures; Phased arrays; Scattering; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959573
