Modeling and simulation of broad-band antennas using the time-domain finite element method

Zheng Lou, Jian Ming Jin

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a time-domain finite element method (TDFEM) for the modeling and simulation of complex broad-band antennas. Two critical components, namely the modeling of antenna feeds and the truncation of infinite free space, are discussed in detail. An accurate waveguide port boundary condition is employed to model the commonly used coaxial feeds, which is also applicable to other waveguide feeding structures. An improvement to the simplified probe feed model is also presented. The formulation and implementation of perfectly matched layers are briefly described for the truncation of the TDFEM computational domain. Numerical examples are presented to demonstrate the modeling and simulation of typical broad-band antennas, which include a logarithmic spiral antenna, a Vivaldi antenna, and a Vlasov antenna.

Original languageEnglish (US)
Pages (from-to)4099-4110
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Volume53
Issue number12
DOIs
StatePublished - Dec 2005

Keywords

  • Broad-band antenna simulation
  • Feed modeling
  • Perfectly matched layers
  • Time-domain finite-element method (TDFEM)
  • Waveguide port boundary condition

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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