Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2007-04-18
2008-12-02
Nguyen, Hoang V (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C340S572100, C340S572700, C340S572800
Reexamination Certificate
active
07460073
ABSTRACT:
An RFID antenna system for a goods identification system with the following features: the RFID antenna device and/or a side limit receiving this RFID antenna device comprise(s) at least two antenna, the at least two antennae for the goods identification system (GIS) consist of patch antennae, the at least two patch antennae are arranged mutually offset in the direction of the passageway or passage region, or at least with one component mutually offset in the passage direction, and the at least two patch antennae are arranged at an equal spacing from a floor area of the passageway and/or on the same horizontal plane or offset thereto, and, more precisely, in such a way that a straight line laid through the center points and/or centers of gravity of at least two adjacent patch antennae encloses an angle α with respect to a horizontal plane and/or a plane that is parallel to the floor space, which angle is ≦45°.
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Klaus Finkenzeller, RFID Handbook: Fundamentals and Applications in Contactless Smart Cards and Identification, Second Edition, Chapters 1.2, 1.3, 2.3 to 2.5.4 and 3.1 to 3.1.2, Copyright 2003, John Wiley & Sons, Ltd.
Lankes Thomas
Mierke Frank
Schillmeier Gerald
Kathrein-Werke KG
Nguyen Hoang V
Nixon & Vanderhye P.C.
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