RFID antenna system

Details RFID antenna system RFID antenna system

2007-04-18

2010-12-14

Wimer, Michael C (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C340S572700

Reexamination Certificate

active

07852268

ABSTRACT:
An RFID antenna system with the following features: the RFID antenna device, with respect to the goods identification system (GIS) or a side limit receiving this RFID antenna device, comprises 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.

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