Radio antennae structures employing helical conductors
AssigneeNational Research Development Corporation
InventorsJames R. James, William James, Robert J. Drewett
Life of this patent
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Abstract
The invention relates to compact radio antennae structures having wide bandwidth characteristics, the antennae structure including a plurality of end-fed antennae, and a terminal connected to end feed the antennae, wherein each of the antennae comprise a pair of extended conductors disposed in helical insulated windings of the same diameter and opposite chirality, the windings being coaxially, longitudinally coextensive and connected together at one end to form said end-feed, and wherein the antennae are each of different electrical lengths.
Claims4
A radio antenna structure including a plurality of end-fed antennae, and a terminal connected to end feed said antennae, wherein each of said antennae comprise a pair of extended conductors disposed in helical insulated windings of the same diameter and opposite chirality, said winds being coaxial, longitudinally coextensive and connected together at one end to form said end-feed, and wherein the antennae are each of different electrical lengths.
Dependencies are inferred from the claim text.