A concentrically corrugated near-field plate

Mohammadreza F. Imani, Anthony Grbic

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

6 Scopus citations


We present a concentrically corrugated near-field plate which can form a sub wavelength near-field focus. The experimental plate consists of a coaxial aperture surrounded by non-periodic concentric corrugations. The measured subwavelength patterns are compared to those created by a coaxial probe with similar dimensions and are shown to be narrower. Excellent agreement between measurements and simulated resuits is observed. Finally, the frequency response of the plate is experimentally studied. The presented near-field plate will find applications in near-field probing.

Original languageEnglish (US)
Title of host publication2010 IEEE MTT-S International Microwave Symposium, MTT 2010
Number of pages4
StatePublished - 2010
Externally publishedYes
Event2010 IEEE MTT-S International Microwave Symposium, MTT 2010 - Anaheim, CA, United States
Duration: May 23 2010May 28 2010

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Other2010 IEEE MTT-S International Microwave Symposium, MTT 2010
Country/TerritoryUnited States
CityAnaheim, CA


  • Corrugated surface
  • Diffraction limit
  • Focusing
  • Metamaterials
  • Near field

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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