Patent ID: 6320550
Filing Date: 2001-11-20
Classification: H01Q

Abstract:
An electromagnetic antenna comprising:(a) first and second conductors in generalized contrawound helical relation to one another, wherein said first and second conductors arc insulated from one another, said first conductor is divided into first and second portions by a first node, said second conductor is divided into first and second portions by a second node, said first and second nodes are in proximate location to one another and constitute a first port, said first portion of said first conductor is in overlapping relation with said first portion of said second conductor as a first portion of a generalized contrawound helix, said second portion of said first conductor is in overlapping relation with said second portion of said second conductor as a second portion of said generalized contrawound helix, said generalized contrawound helix has an axis having curvature; and(b) a signal feed comprising first and second terminals, wherein said first and second terminals are operatively coupled to said first and second nodes.