Tracy Blythe Anderson

US Patent:

57481539, May 5, 1998

Filed:

Jun 26, 1996

Appl. No.:

8/669857

Inventors:

William Edward McKinzie - Culver City CA
Tracy Lynn Anderson - Whittier CA

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

H01Q 1308

US Classification:

343767

Abstract:

A conductor-backed coplanar waveguide traveling wave antenna including a dielectric substrate, a coplanar waveguide structure disposed on the substrate, a plate separated from the substrate for concentrating energy radiated by the antenna generally in a half-space adjacent the exterior of the coplanar waveguide structure, and a feed electrically coupled to the coplanar waveguide for transmitting electromagnetic energy to and from the antenna. Preferably, the plate includes a conductive surface facing the substrate. The aforementioned substrate and plate are separated by a structure which has electromagnetic wave absorbing properties. This antenna is flush-mountable because the separation between the plate and substrate can be made very small, and has broadband capabilities due to its traveling wave producing structure. In addition, the antenna produces significant gain patterns in the forward field of view in a plane parallel to the radiating surface of the coplanar waveguide, and E field polarization perpendicular to this plane of the radiating surface.