Characterization of Transponder Antennas Using Intermodulation Response

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Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2015
Major/Subject
Mcode
Degree programme
Language
en
Pages
2412-2420
Series
IEEE Transactions on Antennas and Propagation, Volume 63, Issue 6
Abstract
The intermodulation measurement technique enables measuring transponder antennas without any cable connections. This contactless technique exploits the inherent nonlinearity of the transponder to generate intermodulation products that can be measured. In this paper, we relate the transponder antenna properties to the intermodulation response, and use this relation to calculate the gain andimpedance matching of the transponder antenna. Additionally, we consider the limitations of the measurement method and present three different measurement geometries for measuring the radiation pattern. The presented equations and methods are experimentally verified by measuring an example harmonic transponder.
Description
Keywords
antenna measurements, harmonic radar, intermodulation distortion, mixers, RFID, transponders, wireless sensors
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Citation
Hannula, Jari-Matti & Rasilainen, Kimmo & Viikari, Ville. 2015. Characterization of Transponder Antennas Using Intermodulation Response. IEEE Transactions on Antennas and Propagation. Volume 63, Issue 6. 2412-2420. DOI: 10.1109/tap.2015.2414438.
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