Performance Evaluation and Electromagnetic Compatibility Measurements on UHF Radio Frequency Identification Systems

Georgiana Buta

Abstract


The history of RFID (Radio Frequency IDentification) can be traced back to World War II, when Germans, Japanese, Americans and British were using radar systems to detect the approaching planes while they were miles away. Nowadays, RFID technology is used in a large field of applications like asset tracking, manufacturing and supply chain automation, automotive and contactless payments. Several electromagnetic compatibility measurements on an UHF (865 MHz - 945 MHz) RFID system were performed, while the radiated emissions levels were recorded using a 20 Hz-26.5 GHz EMI Test Receiver, a log-periodic antenna and RF cables. The tests were made in a semi-anechoic chamber, which is a shielded enclosure with radio absorbing material on ceiling and walls


Keywords


anechoic chamber, electromagnetic compatibility (EMC), radiated emissions, radio frequency identification (RFID), ultra high frequency (UHF)

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DOCT-US

ISSN: 2065-3247

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