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:
Jun. 27, 1995
Filed:
Sep. 28, 1993
Applicant:
Inventor:
Loek D'Hont, Almelo, NL;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ; H01Q / ;
U.S. Cl.
CPC ...
343742 ; 343867 ; 343876 ; 340572 ;
Abstract
An antenna system for use in an Automatic Vehicle Identification (AVI) system 10 having a plurality of non-resonant antenna loops 14 which operate as a single loop antenna during a transmit cycle and individual antenna during a receive cycle. The antenna system includes individual antenna 14 each having amplifier 29 connected to a single source. A switch circuit selectively switches the system from a transmit to receive mode and from a receive to a transmit mode.