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:
Jul. 19, 1988
Filed:
May. 19, 1986
Wilbur J Linhardt, Hawthorne, CA (US);
Robert J Patin, Hawthorne, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
An array of horn antennas with non-uniform aperture sizes is disclosed wherein the individual horns phase track over a wide frequency band. The horn with the smallest aperture is considered the reference horn, and its length defines the overall horn length of the other horn in the array. The flare lengths of the other horns of the array are less than the length of the reference horn, and lengths of waveguide are added to the other horns such that the respective combined flare lengths and waveguide lengths of each of the other horns equals the horn length of the reference horn. The respective lengths of the flare and the waveguide section are chosen such that the resultant horn antenna phase tracks the reference horn over the frequency band. Therefore, horn antennas of various aperture sizes, and restricted to a maximum length can be phase matched over a band of frequencies by reducing the flared length of each horn in relation to that of the smallest or reference horn, and making up the resulting length difference by a waveguide section.