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Circularly polarized square slot microstrip antenna for RFID applications

Published online by Cambridge University Press:  26 May 2015

Neha Sharma ,
Anil Kumar Gautam  and
Binod Kumar Kanaujia
Neha Sharma
Affiliation:
Department of Electronics & Communication Engineering, G. B. Pant Engineering College, Pauri Garhwal, Uttarakhand-246 194, India. Phone: +91 8979 719 397
Anil Kumar Gautam*
Affiliation:
Department of Electronics & Communication Engineering, G. B. Pant Engineering College, Pauri Garhwal, Uttarakhand-246 194, India. Phone: +91 8979 719 397
Binod Kumar Kanaujia
Affiliation:
Department of Electronics & Communication Engineering, Ambedkar Institute of Advanced Communication Technologies & Research, Geeta Colony, Delhi-110031, India
*
Corresponding author: A.K. Gautam Email: gautam1575@yahoo.co.in
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Abstract

In this paper, a novel circularly polarized square slot microstrip antenna is proposed for radio frequency identification (RFID) applications. The circular polarization is achieved by incorporating an arc-shaped strip in the square slot antenna. This antenna is fed by deformed bent feeding line to achieve a broad bandwidth (BW). The key parameters of the antenna are used for parametric study to understand the influence on the antenna performance. To validate simulation results of the design, a prototype is fabricated on the commercially available FR4 material. Measured results show a good agreement with the simulated results. It is found that the antenna shows an impedance BW of 170 MHz (844–1014 MHz) and axial-ratio BW of 170 MHz (834–1004 MHz), which shows that the proposed antenna is a good candidate to be used as a RFID antenna.

Keywords

Axial-ratio bandwidth (ARBW)Radio frequency identification (RFID)Circular polarizationMicrostrip antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 8 , December 2016 , pp. 1237 - 1242
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

REFERENCES

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