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Potential interference issues between FCC Part 15 compliant emitters and immunity complaint equipment



Jeffrey R. Guerrieri, David R. Novotny, Daniel G. Kuester


Transmitting equipment may interfere with sensitive electronic equipment even if both are in compliance with regulatory standards. This paper examines the potential of electromagnetic interference (EMI) between, Federal Communications Commission (FCC) Part 15.247 for Ultra High Frequency (UHF) emitters and immunity compliant sensitive equipment. At close ranges the electromagnetic (EM) fields from these UHF emitters may exceed minimum standard immunity testing levels. This does not imply that interference will occur, but that the device may not be qualified to operate in the EM environment near the emitter. UHF Radio Frequency Identification (RFID) emitters are deployed regularly in locations where sensitive electronic equipment is in use. Recent studies have indicated that an interference potential can exist between some UHF emitters and medical, commercial and military systems. This paper estimates the range at which FCC compliant devices may pose a risk to industrial, consumer and medical devices and compares it to previously published data.
Proceedings Title
Antenna Measurements Techniques Association
Conference Dates
November 1-6, 2009
Conference Location
Salt Lake City, UT


FCC Part 15.247 devices, IEC 60601-1-2:2007 immunity levels, UHF RFID, 4W EIRP, sensitive electronic equipment


Guerrieri, J. , Novotny, D. and Kuester, D. (2009), Potential interference issues between FCC Part 15 compliant emitters and immunity complaint equipment, Antenna Measurements Techniques Association, Salt Lake City, UT, [online], (Accessed June 19, 2024)


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Created November 1, 2009, Updated April 4, 2019