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. 13, 1988
Filed:
May. 15, 1987
Keith V Anderson, Black Hawk, SD (US);
Other;
Abstract
An antenna array for receiving microwave signals is provided that is particularly designed for use in television receive only (TVRO) satellite earth stations. The array comprises a plurality of identically-directed microwave antenna elements arranged in a plane perpendicular to their common primary receiving direction. Each antenna element includes an integral low-noise amplifier (LNA). Outputs of the LNAs are combined to produce a composite output signal which provides maximum response to microwave radiation arriving from the common primary receiving direction of the elements and null responses to microwave radiation arriving from particular other directions. The array includes means for rotating the elements about an axis parallel to the common primary receiving direction. Such rotation effectively adjusts the angle between the primary receiving direction of the array and a null-response direction disposed in a plane perpendicular to the plane of the array. Interfering microwave signals or noise emanating from a source located in an angular direction that is slightly different from the primary receiving direction of the array can thereby be adjustably nullified by rotating the array about its primary receiving direction axis.