A Frequency-Independent Method for Computing the Physical Optics-Based Electromagnetic Fields Scattered from a Hyperbolic Surface

Yu Mao Wu, Weng Cho Chew, Ya Qiu Jin, Li Jun Jiang, Hongxia Ye, Wei E.I. Sha

Research output: Contribution to journalArticlepeer-review

Abstract

In this communication, we propose a frequency-independent approach, the numerical steepest descent path (NSDP) method, for computing the physical optics scattered electromagnetic field on the quadratic hyperbolic surface. Due to the highly oscillatory nature of the physical optics integral, the proposed method relies on deforming the integration path of the integral into the NSDP on the complex plane. Numerical results for the PO-based EM fields from the hyperbolic surface illustrate that the proposed NSDP method is frequency independent in computational cost and error controllable in accuracy.

Original languageEnglish (US)
Article number7399687
Pages (from-to)1546-1552
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Volume64
Issue number4
DOIs
StatePublished - Apr 2016

Keywords

  • Critical-point contributions
  • hyperbolic surface
  • numerical steepest descent path (NSDP)
  • physical optics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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