Method of improving receiver sensitivity of RFID Reader HW platforms with limited resources

We present a method and implementation to improve the receivers of radio-frequency identification (RFID) readers while focusing specifically on RFID measurement and test instruments targeting high sensitivity simultaneously reducing the required dynamic range of the real-time signal processing block...

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Bibliographic Details
Published in2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) pp. 450 - 453
Main Authors Harvanek, Michal, Derbek, Vojtech
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2016
Subjects
Dynamic range
Encoding
Power measurement
Radiofrequency identification
Receivers
Sensitivity
Signal processing algorithms
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Summary:We present a method and implementation to improve the receivers of radio-frequency identification (RFID) readers while focusing specifically on RFID measurement and test instruments targeting high sensitivity simultaneously reducing the required dynamic range of the real-time signal processing blocks. The article discusses the architecture of the software defined radio which allows tag answer analysis in real time by using a new approach. The main contributions are the implementation of the fast Fourier transform in fixed point arithmetic in an field programmable gate array to reduce hardware requirements and improvement of the dynamic range which allows use of commercially available IP cores. The proposed solution, its implementation on the universal software radio peripheral (USRP), and measurement in a real environment are also presented.
DOI:10.1109/RADIOELEK.2016.7477389