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Long Range Passive UHF RFID System Using HVAC Ducts
2010
Proceedings of the IEEE
To provide a potential communications channel, HVAC ducts can function as electromagnetic waveguides; a 30-m read range has been achieved within a free space range of 6 m. ABSTRACT | In this paper, the use of hollow metal heating, ventilating, and air-conditioning (HVAC) ducts as a potential communication channel between passive ultrahigh-frequency (UHF) radio-frequency identification (RFID) readers and tags is studied. HVAC ducts behave as electromagnetic waveguides with much lower signal
doi:10.1109/jproc.2010.2047821
fatcat:uszrjohzpzempp5arknra33dhu