DocumentCode :
2140595
Title :
The blade beam reflector antenna for stacked nearfield millimeter-wave imaging
Author :
Rappaport, Carey M. ; González-Valdés, Borja
Author_Institution :
Gordon CenSSIS / ALERT Center of Excellence, Northeastern Univ., Boston, MA, USA
fYear :
2012
fDate :
8-14 July 2012
Firstpage :
1
Lastpage :
2
Abstract :
A novel reflector antenna for nearfield millimeter-wave imaging applications has been developed. Combining parabolic curvature in one plane with elliptical curvature in the other, this antenna generates a “blade beam” focusing radiated field at a line. When excited at its focal point, transmitted rays are collimated in the first (horizontal) plane, each passing through the focal line at the second ellipse focus. As such, they illuminate a narrow slice of an object to be imaged. With only this slice illuminated, the scattered field will only be due to this narrow portion of the object, allowing for computationally simple inversion of a one-dimensional contour rather than an entire two-dimensional surface. Stacking the reconstructed contours for various horizontal positions provides the full object image.
Keywords :
electromagnetic wave scattering; millimetre wave antennas; millimetre wave imaging; reflector antennas; blade beam focusing radiated field; blade beam reflector antenna; elliptical curvature; focal line; full object image; one-dimensional contour; parabolic curvature; reconstructed contour scattering; scattered field; second ellipse focus; stacked near-field millimeter-wave imaging; two-dimensional surface; Blades; Image reconstruction; Imaging; Radar imaging; Reflector antennas; Surface reconstruction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
ISSN :
1522-3965
Print_ISBN :
978-1-4673-0461-0
Type :
conf
DOI :
10.1109/APS.2012.6348549
Filename :
6348549
Link To Document :
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