Slotted antenna with anisotropic covering

摘要

An antenna includes a tubular, conductive radiator having a longitudinal slot formed therein from a first end of the conductive radiator to a second end of the conductive radiator. An antenna feed can be joined to the conductive radiator adjacent to and across the slot. An anisotropic plate is positioned a uniform distance from the conductive radiator, centered above the slot. The plate extends beyond the length of the radiator and is electrically insulated therefrom. An anisotropic tube surrounds the plate and radiator. The anisotropic tube is electrically insulated from the plate and radiator. In use, this antenna gives enhanced bandwidth over ordinary slotted antennas. This can also be applied to preexisting slotted antennas for enhanced bandwidth.

主权项

1. An antenna capable of being joined to an antenna feed comprising:
a conductive radiator being substantially tubular and having a slot formed therein from a first end of the conductive radiator to a second end of the conductive radiator, the antenna feed being connectable to the tubular region adjacent to and across the slot; an anisotropic plate positioned a uniform distance from a surface of said conductive radiator, centered above the slot, and extending from the first end of said conductive radiator to the second end of said conductive radiator, said anisotropic plate being electrically insulated from said conductive radiator; and an anisotropic tube positioned a uniform distance from a surface of said conductive radiator and a second uniform distance from said anisotropic plate, said anisotropic tube being electrically insulated from said conductive radiator and said anisotropic plate.