Reflective fresnel lens for sub-millimeter wave power...

Details Reflective fresnel lens for sub-millimeter wave power... Reflective fresnel lens for sub-millimeter wave power...

2004-12-21

2008-03-04

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Antenna components

C343S755000, C343S786000, C343S91100R

Reexamination Certificate

active

07339551

ABSTRACT:
A reflective Fresnel lens for shaping an incident wave for efficiently delivering the incident wave to an array of receivers, having a wavelength within a predetermined range. The Fresnel lens comprises a ground plate and a plurality of reflective elements formed at various levels of the ground plate. The predetermined range includes millimeter wavelength range, sub-millimeter wavelength range or microwave wavelength range.

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patent: 6473049 (2002-10-01), Takeuchi et al.
Dickey et al., Laser Beam Shaping, Theory and Techniques, 2000, 22 pages, Macel Dekker, Inc.
Theunissen et al., A Contour Beam Synthesis Method Using . . . , 2003, 4 pages, IEEE.
Roberts, Beam Shaping by Holographic Filters, Jan. 1988, 4 pages, British Aerospace, Filton, Bristol UK.
Meltaus et al., Millimeter-Wave Beam Shaping Using Holograms, Apr. 2003, 7 pages, IEEE, vol. 51, No. 4.

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