Near-field pattern of a scanning aperture microwave probe: Experimental determination and computer simulations

M. Golosovsky, A. F. Lann, D. Davidov, A. Frenkel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We study imaging properties of a microwave scanning probe consisting of a thin slit aperture in the waveguide endwall. We perform vector measurements of the near-field reflectivity of test samples (conducting dot, stripe, half-plane, plane) at various probe-sample separations and orientations. The experimental results for small objects agree fairly well with analytical calculations and computer simulations and may be described by a quasistatic model. Experimental results for extended conducting objects show strong deviations from a quasistatic model probably due to excitation of the surface waves. Experimental results show several peculiar near-field features which has not been properly addressed in the context of near-field imaging, namely, (i) strong collimation of the fields away from the probe up to a distance equal to the probe width, (ii) very weak phase dependence on distance, (iii) excitation of surface waves above conducting surfaces.

Original languageEnglish
Title of host publication21st IEEE Convention of the Electrical and Electronic Engineers in Israel, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages33-36
Number of pages4
ISBN (Electronic)0780358422, 9780780358423
DOIs
StatePublished - 2000
Event21st IEEE Convention of the Electrical and Electronic Engineers in Israel, IEEEI 2000 - Tel-Aviv, Israel
Duration: 11 Apr 200012 Apr 2000

Publication series

Name21st IEEE Convention of the Electrical and Electronic Engineers in Israel, Proceedings

Conference

Conference21st IEEE Convention of the Electrical and Electronic Engineers in Israel, IEEEI 2000
Country/TerritoryIsrael
CityTel-Aviv
Period11/04/0012/04/00

Bibliographical note

Publisher Copyright:
©2000 IEEE.

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