An 868MHz passive temperature sensing transponder using a selfbiasing UHF rectifier with -10.5dBm sensitivity in low-cost 0.35micrometer CMOS

Conference: ANALOG '11 - 12. GMM/ITG-Fachtagung
11/07/2011 - 11/09/2011 at Erlangen, Deutschland

Proceedings: ANALOG '11

Pages: 2Language: englishTyp: PDF

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Stanitzki, Alexander; Feldengut, Tobias; Kolnsberg, Stephan; Kokozinsk, Rainer (Fraunhofer IMS, Finkenstr. 61, 47057 Duisburg, Germany)
Marzouk, Abdel Moneim; Kokozinsk, Rainer (University Duisburg-Essen, Bismarckstr. 81, 47057 Duisburg, Germany)

An 868MHz passive temperature sensing transponder in low-cost 0.35micrometer CMOS technology is presented. The transponder uses a self-biasing UHF rectifier achieving -10.5dBm sensitivity. Measurements are shown of the fabricated demonstrator including the RF frontend, rectifier and voltage regulator, a bandgap voltage reference and temperature sensor as well as the analog-to-digital converter and digital baseband. The device implements a subset of the ISO/IEC 18000-6 protocol and can communicate with standard EPC readers.