Randika Koswatta

Development of digital control section of RFID reader for multi-bit chipless RFID tag reading

This paper presents a design and hardware implementation of a digital control section for chipless RFID tag readers. As the processing device a mid range microcontroller has been used. The control section is designed with a UWB chipless tag reader operating in the frequency range of 4.0 – 6.0 GHz. The designed digital controller has the capability of using with tags having a different number of bits and 4 - bit and 9 - bit tags have been successfully tested. This digital control system is suitable for readers mounted on conveyor belt systems.

Chipless Radio Frequency Identification Reader Signal Processing: Karmakar/Chipless Radio Frequency Identification Reader Signal Processing

This book presents the recent research results on Radio Frequency Identification (RFID) and provides smart signal processing methods for detection, signal integrity, multiple-access and localization, tracking, and collision avoidance in Chipless RFID systems. The book is divided into two sections: The first section discusses techniques for detection and denoising in Chipless RFID systems. These techniques include signal space representation, detection of frequency signatures using UWB impulse radio interrogation, time domain analysis, singularity expansion method for data extraction, and noise reduction and filtering techniques. The second section covers collision and error correction protocols, multi-tag identification through time-frequency analysis, FMCW radar based collision detection and multi-access for Chipless RFID tags as we as localization and tag tracking.