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Millimeter Wave Characterization of a Catadioptric Lens for Imaging Applications

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3 Author(s)
Banik, B. ; Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg, Sweden ; Vukusic, J. ; Stake, J.

Characterization of a catadioptric dielectric lens-horn configuration for short-range sensing and imaging is presented. The focusing property is investigated both numerically and experimentally at 108 GHz. The lens-horn provides a focal spot of ~ 0.9 lambda at a distance of ~ 4.5 lambda. An imaging example employing the lens in a CW imaging setup is presented. A test pattern was imaged and a marked improvement in image resolution was observed. With the aid of the lens, features close to the wavelength are resolved, which are absent or indistinguishable otherwise.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:19 ,  Issue: 11 )