Anti-collision interrogation pulse focusing system for use...

Details Anti-collision interrogation pulse focusing system for use... Anti-collision interrogation pulse focusing system for use...

2006-04-18

2006-04-18

Mullen, Thomas (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S010200, C342S044000, C367S138000

Reexamination Certificate

active

07030762

ABSTRACT:
The present invention provides a system for avoiding code collisions from multiple SAW identification tags and a method of operating such system. In one embodiment the invention provides for (1) focusing an interrogation pulse to within a defined space; and (2) discriminating between coded responses returned from tags located within such defined space.

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Johnson R.C., “Antenna Engineering Handbook, Third Edition” 1993; McGraw-Hill; US XP002251973 ISBN: 0-07-03281-X; Chapter 10: Leaky-Wave Antennas; Chapter 13: Helical Antennas; Chapter 17: Reflector Antennas; Chapter 20: Phased Arrays.

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