The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2002
Filed:
Nov. 29, 2000
Vladimir Volman, Newtown, PA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A conical horn antenna that yields performance substantially equivalent to, or even greater than, that of a corresponding corrugated horn antenna while being simple and inexpensive to manufacture and light in weight. The body portion of the conical horn antenna is a conical horn antenna with a flare break positioned with respect to a central axis. At the output aperture of the body portion, a structure is located. The structure is a series of parallel rings, concentric to the common central axis, that are made of an electrically conductive material, and that are spaced at intervals to form a dielectric region between each ring. The dielectric region may be vacuum, air, free space or may contain a dielectric material. Alternatively, the structure is a helical winding, made of electrically conductive material, that spirals outwardly away from the central axis and forms a dielectric region between the turns of the winding. In a variation, the helical coil winding is surrounded by a jacket of dielectric material. In each case, the dielectric region substantially impedes the flow of electrical current through the wall of the horn antenna in the direction of the central axis.