Concept of near-field millimeter-wave imaging system with a spatial resolution beyond the Abbe barrier

I. V. Minin, Oleg V. Minin

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

Abstract

A near-field millimeter-wave (mm-wave) imaging system with a spatial resolution of less than 0.5 A has been designed in the millimeter wave range for on-line inspection of nonmetallic (dielectric) materials. The imaging system consists of a transceiver block coupled to an antenna that scans the material to be imaged; a reflector plate is placed behind the material. As an antenna a diffractive optics with focus F < λ is used. Such an antenna allow to focusing of millimeter-wave radiation beyond the Abbe barrier. A quadrature IF mixer in the transceiver block enables measurement of in-phase and quadrature-phase components of reflected signals with respect to the transmitted signal. The initial results show the feasibility of the near-field mm-wave sensor for nondestructive inspection of materials with subRayleigh resolution. Using future optically dense modified Fresnel lenses, a resolution of the order λ/100 seems to become possible.

Original languageEnglish
Title of host publicationProceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008
Pages509-512
Number of pages4
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2008 China-Japan Joint Microwave Conference, CJMW 2008 - Shanghai, China
Duration: 10 Sep 200812 Sep 2008

Conference

Conference2008 China-Japan Joint Microwave Conference, CJMW 2008
CountryChina
CityShanghai
Period10.9.0812.9.08

Keywords

  • Abbe barrier
  • Fresnel lens
  • Millimeter wave imaging system
  • Nondestructive testing
  • Sub-rayleigh resolution

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Minin, I. V., & Minin, O. V. (2008). Concept of near-field millimeter-wave imaging system with a spatial resolution beyond the Abbe barrier. In Proceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008 (pp. 509-512). [4772481] https://doi.org/10.1109/CJMW.2008.4772481