Title:
ANTENNA SYSTEM WITH SPATIAL FILTERING SURFACE
Document Type and Number:
WIPO Patent Application WO2004008571
Kind Code:
A3
Abstract:
An antenna system includes a ground plane (80) and/or antenna elements (78A, 78B) forming an antenna array. A spatial filtering surface (82) is positioned adjacent the antenna array through which electromagnetic radiation to or from the antenna array passes. The spatial filtering surface includes a dielectric substrate (54) and a plurality of spaced, geometric configured, resonant elements (52) printed on the dielectric substrate and configured and spaced from each other to have a resonant frequency to filter an electromagnetic field at a selected frequency with respect to an angle of incidence to the dielectric substrate. A dielectric filler (58) is positioned between, above and below each resonant element printed on the dielectric substrate. A spatial filter taper transform is imparted when electromagnetic radiation passes therethrough. A standing wave is created between the ground plane and spatial filtering surface.
Inventors:
KILLEN WILLIAM D
DELGADO HERIBERTO JOSE
DELGADO HERIBERTO JOSE
Application Number:
PCT/US2003/020571
Publication Date:
September 01, 2005
Filing Date:
June 27, 2003
Export Citation:
Assignee:
HARRIS CORP (US)
International Classes:
H01Q15/00; (IPC1-7): H01Q19/00; H01Q15/02; H01P1/20
Foreign References:
| US6147572A | 2000-11-14 | |||
| US6396451B1 | 2002-05-28 | |||
| US4970634A | 1990-11-13 |
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