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:
Apr. 17, 1984
Filed:
Sep. 28, 1981
Terry M Smith, La Honda, CA (US);
Ford Aerospace & Communications Corporation, Detroit, MI (US);
Abstract
A coaxial radiating waveguide antenna is disclosed, comprising two conductive concentric right circular cylinders forming a cavity. Equally spaced within the cavity is a set of probes phased in such a manner as to produce TE.sub.21 or a higher order difference mode of radiation. One side of the toroidal antenna is sealed by a flat conductive ring; the other side is generally open and terminates in two flared regions which serve to shape the beam in the desired fashion. A broad null surrounds the boresight axis with major lobes disposed approximately 45.degree. therefrom in the case of TE.sub.31 propagation. The resulting radiation can be circularly or linearly polarized.