Patent ID: 6239762
Filing Date: 2001-05-29
Classification: H01Q

Abstract:
A crossed slot antenna arrangement, comprising:a first ground plane having radiating and nonradiating broad sides, said first ground plane defining a crossed slot having first and second mutually orthogonal linear slots, each of which slots includes a first and second portion;a first electrically conductive feed lying parallel with said first ground plane and adjacent said nonradiating side of said first ground plane, and extending across said first portion of said first linear slot for excitation thereof;a first dielectric layer lying between said nonradiating side of said first ground plane and said first electrically conductive feed, whereby said first electrically conductive feed takes the general form of a first transmission-line structure;a second electrically conductive feed lying parallel with said first ground plane and extending across said first portion of said second linear slot for excitation thereof;a second ground layer lying between said second electrically conductive feed and said first electrically conductive feed, thereby providing a second ground plane for said first transmission-line structure, and whereby said second electrically conductive feed takes on the form of a second transmission-line structure;a second dielectric layer lying between said between said second electrically conductive feed and said second ground layer;a third ground plane extending parallel with said first ground plane, adjacent to said second electrically conductive feed, at a location remote from said second dielectric layer, for thereby providing a second ground plane for said second transmission-line structure; andelectrically conductive interconnection means coupled to at least said first portion of said second linear slot and to said third ground plane, without contacting said first and second electrically conductive feeds, for electrically interconnecting said second linear slot with said second transmission-line structure.