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:
Dec. 16, 1986
Filed:
Jul. 01, 1985
Richard J Dewey, Reigate, GB;
U.S. Philips Corporation, New York, NY (US);
Abstract
A horn antenna suitable for an amplitude-comparison broadband direction-finding system with 360.degree. azimuth coverage comprises a horn with a wide angle of flare in a plane normal to the z-axis of a cylindrical co-ordinate system and an aperture which is suitably cylindrical, as seen from that axis, and further comprises means for launching electromagnetic energy into the horn towards the aperture. In order to provide a substantially constant beamwidth over a broad frequency range, which may be as wide as 7:1, the horn and launching means are adapted to launch and propagate to the aperture a substantially pure lowest order circumferential mode having its electric field in a direction parallel to the z-axis, the launching means acting substantially as a line source coincident with the z-axis. The flare angle may be 180 degrees, and the launching means may comprise an electric probe extending substantially along the z-axis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile