Quadrifilar helix antenna
AssigneeAntcom
InventorsSon Huy Huynh, George Cheng
Life of this patent
Estimating the term…
Abstract
A low cost quadrifilar helix antenna having a molded body providing an elongated hollow radome supporting at least one radiating elements and a feed network within the body. In one form, the body is molded in two identical half sections so as to be joined together into a unitary construction with the feed network and radiating elements being applied to the internal surface by a plating procedure. In another form, the molded body is a thick walled cylinder having at least one spiral passageway occupied by inserted wires constituting the radiating elements.
Claims12
A low cost quadrifilar helix antenna for use in satellite telecommunication applications comprising:
- a dielectric hollow elongated radome having an exterior surface and internal surface;
- and
- a feed network carried on said internal surface adjacent a selected end of said radome;
- and
- a plurality of radiating elements arranged in a given geometric arrangement in electrical connection with said feed network and carried on said internal surface extending from said feed network to an opposite end of said radome from said selected one end;
- and
- said feed network and said radiating elements are plated in fixed spaced-apart relationship to said internal surface.
In a quadrifilar helix antenna, the combination which comprises:
- an elongated body having a central longitudinal axis;
- said body having an open end and a closed end with a bore extending therebetween defined by an internal surface;
- electrical conductors carried on said internal surface providing a spiral radiating array of at least four radiating elements coaxially disposed with respect to said central longitudinal axis;
- a feed network carried on said internal surface adjacent said open end and in electrical coupling relationship with said radiating elements;
- and
- said body being of molded construction and said feed network and said radiating elements defined as plated components onto said internal surface.
A method of manufacturing a low cost quadrifilar helix antenna including at least one radiating element comprising the step of:
- molding an elongated hollow body with a cylindrical wall defining an internal surface;
- and
- plating metallic radiating element on said body for supporting and protecting said radiating element from adverse environmental conditions.
Dependencies are inferred from the claim text.