Electromagnetic Analysis of Periodic Structure Reflection and Transmission by the Hybrid Finite Element Method.
Abstract
A numerical solution for the time-harmonic electromagnetic fields in an infinite periodic structure has been developed, implemented, and validated. It uses a variation of the hybrid finite element method that includes periodic radiation conditions at the exterior surfaces, and periodicity conditions at the unit cell side walls inside the structure. The electric fields inside the unit cell are represented by linear vector finite elements. The successful test cases include an inductive screen, a parallel wire grid, a conducting-sphere artificial dielectric, a bandgap structure made up of parallel, layered-dielectric rods, and crossed conducting bars representative of reinforced concrete. The report describes the formulation of the method, and its implementation in a general-purpose computer code, and the results of the test cases. Possible uses of the code for studies in high power microwaves are addressed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1995
- Accession Number
- ADA302144
Entities
People
- Daniel T. Mcgrath