Summary
URSI Commission B 2013 International Symposium on Electromagnetic Theory EMTS 2013
2013
Session Number:23AM1D
Session:
Number:23AM1D-05
Reconstruction of MMW Near-field Image with Antenna-radiation-pattern Deconvolution Processing
H. Togo, T. Kojima, S. Mochizuki, N. Kukutsu,
pp.423-424
Publication Date:2013/5/20
Online ISSN:2188-5079
DOI:10.34385/proc.30.23AM1D-05
Summary:
This paper describes the enhancement of special resolution with a new two-dimensional image reconstruction algorithm in millimeter-wave near-field images. The algorithm deconvolutes the images with the near-field radiation pattern from an antenna, which is not based on plane-wave decomposition and provides a constant spatial resolution independent of antenna characteristics. This paper presents reconstruction results from images of a 0.1-mm-wide crack on a concrete block measured at 76.5 GHz. These results demonstrated 2.4-fold enhancement of the spatial resolution by applying our algorithm to the raw image, which is close to the highest resolution determined with the diffraction limit.