Patent ID: 7777626
Filing Date: 2010-08-17
Classification: G06K

Abstract:
1. In an RFID tag system, a tag having an antenna and a feed point and more than two randomly oriented integrated circuits that transmit phase coherent signals in which there is zero phase difference between the signals from said integrated circuits such that said signals constructively add to provide either increased range or a better signal to noise ratio at a given range, at least two of said randomly oriented integrated circuits being coupled to the feed point of said antenna, said more than two integrated circuits being deposited in a random manner with random orientations over the feed point of said antenna through a printing process in which said integrated circuits are immersed in a non-conductive fluid constituting an ink deposited by printing over the feed point of said antenna, at least two of said integrated circuits with phase coherent signals being coupled to the feed point of said antenna, whereby the random orientations do not prevent robust RFID operation.