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:
Sep. 04, 1990
Filed:
Nov. 15, 1988
Jacques Lanciaux, Pibrac, FR;
Rockwell-Collins France, Blagnac, FR;
Abstract
Radiodirection finding method and apparatus using Doppler effect frequency modulation for measuring the bearing of a source transmitting a high frequency signal, wherein either on the reception side or on the transmission side, several antenna strands are used in pairs diametrically spaced from each other and spaced evenly apart angularly about a circumference. A first pair of diametrically spaced antenna strands are energized and then the next pair of diametrically spaced antenna strands in turn are selectively energized so as to create, at all times, a mobile fictitious antenna moving diametrically and alternately between the two diametrically opposite antenna strands of the particular pair of antenna strands considered. Different pairs of diametrically opposite antenna strands are successively energized in an angularly rotating sequence from the first pair of antenna strands.