ANTI-COLLISION INTERROGATION PULSE FOCUSING SYSTEM FOR USE WITH MULTIPLE SURFACE ACOUSTIC WAVE IDENTIFICATION TAGS AND METHOD OF OPERATION THEREOF
摘要
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.