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. 25, 1990
Filed:
Nov. 29, 1989
Ronald M Rudish, Commack, NY (US);
Peter J McVeigh, Hauppauge, NY (US);
AIL Systems, Inc., Deer Park, NY (US);
Abstract
A circular array includes a plurality of antenna elements which are spaced apart from each other and situated in a conical arrangement and in parallel rows circumferentially about the longitudinal axis of the conical arrangement. The circumferential spacing between the phase centers of adjacent antenna elements of any one row situated closer to the base of the conical arrangement is greater than that of adjacent antenna elements situated relatively closer to the apex of the conical arrangement. The respective operating frequencies of the antenna elements of any one row situated closer to the base of the conical arrangment is lower than the operating frequencies of the antenna elements of any other row situated relatively closer to the apex. The circuit array antenna further includes a plurality of feed lines, where each feed line is coupled to an antenna element of each row in progression. The circumferential spacing between the phase centers of adjacent antenna elements of the conical arrangement is maintained at a fixed value of the wavelength of the operating frequencies of the antenna elements.