Phase correcting reflection zone plate for focusing microwaves

Details Phase correcting reflection zone plate for focusing microwaves Phase correcting reflection zone plate for focusing microwaves

H - Electricity

01

P

H01P 1/00 (2006.01) H01P 11/00 (2006.01) H01Q 19/06 (2006.01)

Patent

CA 2087012

2087012 9201319 PCTABS00010 A zone plate for focusing microwave energy is provided comprising a plurality of reflective portions (14a-d) corresponding to zones of said zone plate, each reflective portion reflecting energy lambda/P out of phase with respect to adjacent reflective portions, where lambda is the wavelength of the energy. The reflective portions (14a-d) are positioned in P parallel planes (10-13) mounted on low dielectric loss sheets and separated by a distance of lambda/2P such that energy reflected from the reflective portions constructively interfere at a focus of the zone plate. Also a method and apparatus for the manufacture of such a zone plate is disclosed.

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