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Asymmetrical π-Shaped Slot Embedded Microstrip Antenna for Circular Polarization

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Abstract

A unique geometry of a square patch antenna with an embedded asymmetrical π-shaped slot for circular polarization is presented. The proposed structure has an aperture coupled feed which is matched over a very wide frequency band. This is accomplished by incorporating an oval shaped stub at the end of the single microstrip feed. The antenna shows a 3-dB axial ratio bandwidth of 3.9 % (2.50–2.60 GHz) with respect to the measured minimum axial ratio frequency of 2.56 GHz. The 10-dB return loss bandwidth measured is 40.23 % (2.32–3.35 GHz) with respect to 2.56 GHz. The antenna gain is >8.2 dBi in the circularly polarized band. The antenna is well suited for use in circularly polarized antennas and arrays for wireless communication.

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Authors and Affiliations

  1. School of Information and Communication Technology, Guru Gobind Singh Indraprastha University, New Delhi, 110 078, India

    Ajay Kumar Sharma & B. Venkata Ramana Reddy

  2. Ambedkar Institute of Advanced Communication Technologies and Research, Geeta Colony, New Delhi, 110 031, India

    Ashok Mittal

Authors
  1. Ajay Kumar Sharma
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  2. Ashok Mittal
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  3. B. Venkata Ramana Reddy
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Correspondence to Ajay Kumar Sharma.

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Sharma, A.K., Mittal, A. & Reddy, B.V.R. Asymmetrical π-Shaped Slot Embedded Microstrip Antenna for Circular Polarization. Wireless Pers Commun 83, 2069–2083 (2015). https://doi.org/10.1007/s11277-015-2503-2

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  • DOI: https://doi.org/10.1007/s11277-015-2503-2

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