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:
Jan. 22, 1980
Filed:
Nov. 22, 1978
Horst Vogel, Korntal, DE;
Herbert Kleiber, Ludwigsburg, DE;
International Standard Electric Corporation, New York, NY (US);
Abstract
A novel DME transponder having a plurality of directional antennas arranged equidistantly on a circle each having a radial, highly directional pattern and as a group covering 360.degree. in the azimuth plane. The antennas are divided into at least two groups of nonadjacent antennas. Each group is connected to a receiver. The DME reply signal is radiated from the group containing the antenna which has received the DME interrogation signal with the greatest amplitude. The signal radiated in the direction of the interrogator is the DME reply signal, and the signals radiated in the other directions are used as filler pulses.