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Single-feed circularly polarized stacked patch antenna with small-frequency ratio for dual-band wireless applications

Published online by Cambridge University Press:  24 April 2015

Sachin Kumar
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies & Research, Delhi-110031, India
Binod K. Kanaujia
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies & Research, Delhi-110031, India
Mukesh K. Khandelwal
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies & Research, Delhi-110031, India
A.K. Gautam
Affiliation:
Department of Electronics and Communication Engineering, G. B. Pant Engineering College, Uttrakhand-246194, India
Corresponding
E-mail address:

Abstract

A single-feed dual-band circularly polarized stacked microstrip patch antenna with a small-frequency ratio is presented. Two pair of orthogonal slits is cut on the lower circular patch for achieving circular polarization and truncated corner square patch is used as the upper parasitic element. The frequency ratio of the dual-band is 1.03. The 3 dB axial ratio bandwidth is 1.3% for the upper band and 1.1% for the lower band. Proposed structure is fabricated on the FR-4 epoxy substrate and fed by SMA connector. The measured results are in good agreement with the theoretical and simulated results. The antenna shows stable radiation characteristics in both bands of operation.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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