A printer-encoder antenna has to reliably communicate with only one targeted tag among a number of tightly spaced transponders in very close proximity. Moreover, the distance between the encoder and transponder antennas is typically a few millimeters only. Thus, antennas for UHF-RFID printer encoders are more similar to electromagnetic couplers than to antennas, and a specific analysis is required in terms of power transferred by the encoder to the transponder chip. In this paper, a reader antenna identical to the tag antenna is suggested as an optimal solution for meeting the severe requirement on the spatial selectivity of the encoding process.
|Titolo:||Optimal antennas for RFID printer-encoders|
|Anno del prodotto:||2016|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|