An efficient iterative solver for the modes in a dielectric waveguide

Kaladhar Radhakrishnan, Weng Cho Chew

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

Abstract

Two Krylov subspace based methods were used to solve the sparse matrix generated by the finite difference formulation. The use of the bi-Lanczos algorithm allows this method to be computationally competitive with other approximate methods while the use of the finite difference formulation makes this method versatile enough to handle complicated waveguide structures. The BiCG based algorithm reduces the storage requirements to O(N) and thus can handle problems with several hundred thousand calculations. The speed of this algorithm can be further enhanced hy using a non-uniform grid in the solution space outside the dieletric waveguide. By using a non-uniform grid, the size of the artificial boundary can be greatly increased which limits the error in the results near cutoff frequencies.

Original languageEnglish (US)
Title of host publicationIEEE Antennas and Propagation Society International Symposium, 1998 Digest - Antennas
Subtitle of host publicationGateways to the Global Network - Held in conjunction with: USNC/URSI National Radio Science Meeting
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1492-1495
Number of pages4
ISBN (Print)0780344782, 9780780344785
DOIs
StatePublished - Jan 1 1998
Event1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998 - Atlanta, United States
Duration: Jun 21 1998Jun 26 1998

Publication series

NameIEEE Antennas and Propagation Society International Symposium, 1998 Digest - Antennas: Gateways to the Global Network - Held in conjunction with: USNC/URSI National Radio Science Meeting
Volume3

Other

Other1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998
Country/TerritoryUnited States
CityAtlanta
Period6/21/986/26/98

ASJC Scopus subject areas

  • Instrumentation
  • Radiation
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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