A concentrically corrugated near-field plate

Author

Imani, Mohammadreza F. ; Grbic, Anthony

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA

fYear

2010

fDate

23-28 May 2010

Firstpage

1648

Lastpage

1651

Abstract

We present a concentrically corrugated near-field plate which can form a subwavelength 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 results is observed. Finally, the frequency response of the plate is experimentally studied. The presented near-field plate will find applications in near-field probing.

Keywords

metamaterials; plates (structures); coaxial aperture; coaxial probe; concentrically corrugated near-field plate; frequency response; near-field probing; nonperiodic concentric corrugations; subwavelength near-field focus; subwavelength patterns; Apertures; Coaxial components; Corrugated surfaces; Electromagnetic diffraction; Energy resolution; Focusing; Holography; Microscopy; Optical surface waves; Probes; corrugated surface; diffraction limit; focusing; metamaterials; near field;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International

Conference_Location

Anaheim, CA

ISSN

0149-645X

Print_ISBN

978-1-4244-6056-4

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2010.5517888

Filename

5517888