A 32-Bit Single Quadrant Angle-Controlled Chipless Tag for Radio Frequency Identification Applications
Muhammad Noman,
Usman A. Haider,
Hidayat Ullah,
Farooq A. Tahir,
Hatem Rmili,
Ali I. Najam
Affiliations
Muhammad Noman
Research Institute for Microwave and Millimeter-Wave Studies, School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad 44000, Pakistan
Usman A. Haider
Research Institute for Microwave and Millimeter-Wave Studies, School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad 44000, Pakistan
Hidayat Ullah
Research Institute for Microwave and Millimeter-Wave Studies, School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad 44000, Pakistan
Farooq A. Tahir
Research Institute for Microwave and Millimeter-Wave Studies, School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Islamabad 44000, Pakistan
Hatem Rmili
K.A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Ali I. Najam
National Electronics Complex of Pakistan, Islamabad 44000, Pakistan
A 32-bit chipless RFID tag operating in the 4.5–10.9 GHz band is presented in this paper. The tag has a unique multiple-arc-type shape consisting of closely packed 0.2 mm wide arcs of different radii and lengths. The specific tag geometry provides multiple resonances in frequency domain of an RCS plot. A frequency domain coding technique has also been proposed to encode the tag’s RCS signature into a 32-bit digital identification code. The tag has an overall dimension of 17.9 × 17.9 mm2, resulting in a high code density of 9.98 bits/cm2 and spectral efficiency of 5 bits/GHz. The proposed tag is built on a low loss substrate bearing a very small footprint, thereby making it extremely suitable for large-scale product identification purposes in future chipless RFID tag systems.
