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Reference Modulation for Calibrated Measurements of Tag Backscatter



Daniel G. Kuester, David R. Novotny, Jeffrey R. Guerrieri, Randy Direen, Zoya Popovic


This paper presents an active antenna designed to modulate the scattering of an interrogating wave in the 860-960 MHz UHF RFID band. The device can be characterized with straightforward S- parameter measurements, and can then be used for characterization of both passive and semi-passive RFID tags. A model for the back-scattering with modulated signals in an arbitrary linear environment is presented. RFID reader testing and interference studies can also be performed with this scatter modulator.
IEEE Microwave and Wireless Components Letters


RFID, UHF, backscatter, modulation


Kuester, D. , Novotny, D. , Guerrieri, J. , Direen, R. and Popovic, Z. (2011), Reference Modulation for Calibrated Measurements of Tag Backscatter, IEEE Microwave and Wireless Components Letters, [online], (Accessed June 14, 2024)


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Created April 12, 2011, Updated April 15, 2019