Behavior of CAD 110 Copper (Heat Sink Material) as a Fractal Structured RFID Antenna in High Temperature Operation

Authors V. Chitra, S. Arulselvi, B. Karthik

Department of Electronics & Communications Engineering, Bharath Institute of Higher Education and Research, 173 Agharam Road Selaiyur, Chennai 600073, Tamil Nadu, India

Issue Volume 14, Year 2022, Number 6
Dates Received 27 October 2022; revised manuscript received 20 December 2022; published online 27 December 2022
Citation V. Chitra, S. Arulselvi, B. Karthik, J. Nano- Electron. Phys. 14 No 6, 06028 (2022)
PACS Number(s) 61.43. – j, 84.40.Ba
Keywords CAD 110 copper, Fractal structured antenna, High temperature operation, Radio frequency identification, Read range.

There is a high demand for Radio Frequency Identification (RFID) antennas to be installed in high temperature environments. For these applications, new material combinations are being pursued to deal with heat dissipation and faster heat transfer, without compromise in antenna performance. These materials should perform accurately in withstanding volatile environments. In this manuscript, an RFID antenna for 900 MHz frequency has been proposed and prepared on a 1.35 mm thick CAD 100 copper sheet, which is a heat sink material. The antenna is intended to identify processed and partly processed products during fabrication in manufacturing industries. Variations in input impedance were observed on increasing the testing temperatures. It was found that the read range of the antenna decreased at higher temperatures. At working environment of 130 °C-150 °C, a fractal structured RFID antenna using CAD 110 copper material could be detected at around 40 cm distance. This better read range helps in identification at a safe distance, which prevents injury and hazard to workers operating near it.

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