Domain decomposition methods for EMC/EMI modeling: Antenna placements on a large air platform

Z. Peng, X. Wang, J. Wang, J. F. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We apply a recently developed multi-solver domain decomposition method (MS-DDM) to compute the antenna pattern of a S-band monopole antenna taking into account the couplings from the surrounding 23 other antennas, both in-band and out-of-band couplings, and the effects of the large air platform on which the S-band antenna is mounted. Since the air platform is electrically large and multi-scale in nature, the usual integral equation methods tax heavily on the computer resources and maybe even fail to converge when iterative Krylov matrix solution technique is employed. To provide a converging integral equation approach for modeling the air platform, we further apply the integral equation domain decomposition method (IE-DDM) as an effective preconditioner for the resulting combined field integral equation (CFIE) method. The fundamental strategy of the proposed MS-DDM is to decompose the entire computational domain into many sub-regions based on the local material properties and geometrical features. Moreover, the coupling between well-separated sub-regions is implemented through Stratton-Chu representation formulas. However, for the touching interfaces between neighboring sub-regions, a Robin transmission condition is introduced to mitigate the troublesome self integral terms with weak singular kernels. Numerical results of the S-band monopole antenna mounted conformally on a mockup F-16 fighter jet, together with 23 other antennas, are shown to demonstrate the flexibility and potentials of the proposed hierarchical MS-DDM and IE-DDM approach. Antenna patterns of the S-band monopole antenna in free space as well as the results including all the couplings form the other antennas and the air platform are also presented.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2011
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
Event2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2011 - Tel Aviv, Israel
Duration: Nov 7 2011Nov 9 2011

Publication series

Name2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2011

Conference

Conference2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2011
CountryIsrael
CityTel Aviv
Period11/7/1111/9/11

Keywords

  • Domain decomposition
  • finite element methods
  • integral equations
  • multilevel fast multipole algorithm
  • mutual coupling

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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