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. 04, 1995
Filed:
Aug. 28, 1992
Applicant:
Inventors:
Marc Heddebaut, Sainghin En Melantois, FR;
Marion Berbineau, Lambersart, FR;
Stephane Lassalle, Gennevilliers, FR;
Pierre Degauque, Lambersart, FR;
Assignee:
GFC Alsthom S A, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; G01S / ; H01Q / ;
U.S. Cl.
CPC ...
342457 ; 342454 ; 342386 ; 343770 ; 343771 ;
Abstract
A microwave system for locating a mobile element comprises a hollow tube forming a waveguide fed with microwave signals. A location beacon radiates into free space an electromagnetic wave derived from the microwave signals propagating in the waveguide. A location antenna attached to the mobile element receives the electromagnetic wave radiated by the beacon. The location beacon transmits to the antenna a single electric field signal enabling transmission of a location message.