The Method of Equivalent Dipole Moments (MEDM) - a Novel CBFM Approach for the Fast and Accurate Solution of Dielectric-Scattering Problems
Paper in proceeding, 2011
High-resolution basis functions are em- ployed for accurate modelling of electromagnetic scattering from dielectric objects. It is shown that the field radiated by each of these micro basis func- tions resembles the dipole field, even in the imme- diate vicinity of its cubic support. This, in turn, significantly eases the computational burden of gen- erating the off-diagonal elements of the moment matrix. Furthermore, the on-diagonal self-term is known analytically and only governed by the electro- static field (electrodynamic part is negligible). This method has been hybridised with the Characteris- tic Basis Function Method (CBFM) and the Adap- tive Cross Approximation (ACA) algorithm to re- duce both the size and generation time of the mo- ment matrix equation. It is demonstrated that the proposed method, herein referred to as MEDM, is not only fast and memory efficient but it also gener- ates an accurate solution of scattering problems as- sociated with complex-shaped, thin and electrically large objects.
Electrically large objects
Scattering problems
Electrostatic field
Basis functions
matrix
Dipole fields
Matrix algebra
Electromagnetic scattering
Generation time
Matrix equations
Characteristic basis function methods
High resolution
Electromagnetism
Approximation algorithms
Scattering
Off-diagonal elements
Computational burden
Dielectric scattering
Adaptive cross approximation algorithms
Memory efficient
Dielectric objects
Author
Muhammad Naeem
Chalmers, Signals and Systems
Rob Maaskant
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
D. kant
Netherlands Institute for Radio Astronomy (ASTRON)
Per-Simon Kildal
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
R. Mittra
Pennsylvania State University
Proceedings - 13th International Conference on Electromagnetics in Advanced Applications, ICEAA'11, Torino, 12-16 September 2011, s. 1013-1016
1013-1016 6046482
978-161284978-2 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/ICEAA.2011.6046482
ISBN
978-161284978-2