Incident angle-dependent effective surface impedance (ZS) of electromagnetic crystal (EMXT)

Hao Xin, M. Kim, J. B. Hacker, J. A. Higgins

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Electromagnetic crystal (EMXT) surfaces are modeled with effective surface impedance method. Effects of oblique incidence are studied using a technique similar to the waveguide simulator method for analyzing infinite phased array. Numerical results are compared with an analytical model. EMXT samples are characterized by open-ended waveguide reflection measurements using different aperture sizes (WR28 and WR22). The measurements confirm the angular dependence of the EMXT surface impedance. A rectangular waveguide with EMXT sidewalls is modeled by using the angle-dependent effective surface impedance as the sidewall boundary condition. Excellent agreement between this model and full-wave finite-element simulation of the entire waveguide structure is obtained.

Original languageEnglish (US)
Pages (from-to)437-439
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume14
Issue number9
DOIs
StatePublished - Sep 2004
Externally publishedYes

Fingerprint

impedance
electromagnetism
waveguides
Crystals
Waveguides
crystals
rectangular waveguides
phased arrays
crystal surfaces
simulators
Antenna phased arrays
Rectangular waveguides
incidence
apertures
boundary conditions
Analytical models
Simulators
Boundary conditions
simulation

Keywords

  • Electromagnetic crystal (EMXT) surfaces
  • Infinite phased array
  • Surface impedance

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Incident angle-dependent effective surface impedance (ZS) of electromagnetic crystal (EMXT). / Xin, Hao; Kim, M.; Hacker, J. B.; Higgins, J. A.

In: IEEE Microwave and Wireless Components Letters, Vol. 14, No. 9, 09.2004, p. 437-439.

Research output: Contribution to journalArticle

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