Towards an Efficient Chipless RFID System for Modern Applications in IoT Networks

Abstract

In this article, we present the design and validation of an efficient chipless RFID system. A multi-resonator chipless tag is designed and tested for high bit coding capacity. A high gain, ultra-wideband step-shape rectangular patch (USRP) antenna is proposed to validate the specificity of the tag in terms of its operation. The devised antenna is evaluated for various performance parameters, which recommend its suitability for testing and validation of high-capacity tags that can be deployed in modern applications, particularly in the Internet of Things (IoT) networks. A measurement setup is established to achieve performance validation of the tag over a significant range of 40 cm. There is close agreement between the measured and simulated results, which suggests that the proposed antenna system can be adopted in a similar measurement setup to test and validate the performance of any chipless RFID tag operating in the same bandwidth meant for IoT networks.

New Compact Antenna Array for MIMO Internet of Things Applications

“…. , 6 The spectral efficiency of the MIMO antenna system suffers when the ECC becomes high. It means that the lower value of ECC is preferable [9].…”

“…IoT systems thus depend on a high level of intelligence to optimize system performance in a challenging environment. Part of the system intelligence can be achieved by using efficient and adaptive beamforming capability associated with the use of multiple-input multiple-output (MIMO) antenna arrays [5][6][7][8]. MIMO systems offer various advantages, including an increase in the data rate, enhancement of spectral efficiency, and boosting the diversity gain [9][10][11].…”

Design and Analysis of a Quad-Band Antenna for IoT and Wearable RFID Applications

“…Operating across multiple frequency bands, RFID includes low-frequency (LF) at 125 kHz for short-range applications, highfrequency (HF) at 13.56 MHz for smart cards and NFC, ultra-high-frequency (UHF) spanning 860-960 MHz for longer-range uses, microwave frequency (2.45 GHz) for active RFID in real-time location and industrial applications, and super-high-frequency (5.8 GHz) for specific high-data-transfer-rate needs. RFID frequency band selection is influenced by factors like required read range, application environment, and regulatory considerations, varying across regions, as reported in [12,13].…”