Enhancing the Modeling Capability of the FE-BI Method for Simulation of Cavity-Backed Antennas and Arrays

Abstract

The modeling capability of the finite element-boundary integral (FE-BI) technique is expanded for the analysis and design of cavity-backed antennas and arrays consisting of complex, inhomogeneous, and anisotropic materials. The adaptive integral method (AIM) is implemented to accelerate the evaluation of the time-consuming boundary integrals. The modeling of anisotropic materials, impedance boundary conditions, and resistive boundary conditions is also addressed. Validation examples and comparison data are presented to demonstrate the acceleration and memory reduction achieved as a result of this enhancement.

Keywords:

• adaptive integral method
• finite element method
• numerical analysis
• cavity-backed conformal antennas
• microstrip antennas and arrays
• scattering and radiation

Acknowledgments

This work was supported by the U.S. Department of Defense's High Performance Computing Modernization Program.