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. 11, 1978
Filed:
Nov. 02, 1976
Abstract
Disclosed is a device for eliminating the ghost wherein at least two antenna bays are spaced apart in the horizontal direction by 1/4 wavelength, a mixer is provided which mixes the outputs from the antenna bays, phase shifting means for shifting the ghost signal in phase with or out of phase by 180.degree. with the desired signal is inserted between the output terminal of one antenna bay and an input terminal of the mixer, amplitude control means is inserted between the output terminal of the other antenna bay and an input terminal of the mixer, and the output from the mixer is delayed and the delayed output and the undelayed output from the mixer are mixed so as to control their amplitudes and polarities, whereby the ghost signal may be cancelled.