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:
Mar. 09, 1976
Filed:
Mar. 07, 1972
Matthew Fassett, Billerica, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
An improved directional antenna for use in an airborne vehicle is shown. The contemplated antenna includes a planar phased array of antenna elements mechanically rotatable about an axis of rotation, the plane of such array making an acute angle with such axis. The beam from such array may be electronically scanned, within wide limits, regardless of the orientation of the phased array. Also shown is an improved constrained centerfeed for the antenna elements in each row thereof in such array, the disclosed feed incorporating a double ladder arrangement, including wideband couplers, to permit the extensive use of stripline and at the same time to allow practically independent adjustment of azimuth and elevation difference patterns when the phased array is used as an element in a monopulse system.