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US 2003/0197653 A1Published application
RFID antenna apparatus and system
OwnerRussell Barber, Mark Nicholsoninventors
Life of this patent
Estimating the term…
Abstract
A RFID antenna apparatus and system comprising substantially coplanar first and second loop elements and a crossover element that generally define an H-shape, the first and second loop elements having substantially similar geometric shapes of substantially equal dimension, and a drive element.
Claims9
An antenna apparatus, comprising:
- a substantially H-shaped antenna structure, said antenna structure having substantially coplanar first and second loop elements and a crossover element, said first and second loop elements having substantially similar geometric shapes of substantially equal dimension, said crossover element having a pair of spaced, substantially parallel conductors electrically connecting said first and second loop elements;
- and
- a drive element for driving said antenna structure,
- said antenna apparatus providing a substantially uniform tag read area that is substantially devoid of null points.
1 more element
A modular RFID antenna system, comprising:
- a plurality of modular antenna segments, each of said plurality of antenna segments having an antenna adapted to transmit and receive at least one RF signal from at least one RF tag,
- said antenna having a substantially H-shaped antenna structure, said antenna structure having substantially coplanar first and second loop elements and a crossover element, said first and second loop elements having substantially similar geometric shapes of substantially equal dimension, said crossover element having a pair of spaced, substantially parallel conductors electrically connecting said first and second loop elements and a drive element for driving said antenna structure,
- said antenna segments being removably connectable to form a plurality of antenna system configurations, at least a first of said plurality of antenna system configurations providing a first antenna field, said first antenna field providing substantially multi-directional RF transmission and receipt of said RF signal.
Dependencies are inferred from the claim text.