IRO Journals
IRO Journal on Sustainable Wireless Systems

Corner Perturbation-Enabled Dual-Resonant Circularly Polarized Antenna for Resilient UAV Networks

Open Access
Published: 16 June, 2026
Pages: 128-141
  • Ramesh S. , Ramesh S.
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
  • Dillip Prasad P. , Dillip Prasad P.
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
  • Gokulvasan V. , Gokulvasan V.
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
  • Guna Sekar G. , Guna Sekar G.
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
  • Gokul J. Gokul J.
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
    Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Tamil Nadu, India
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How to Cite

S., Ramesh, Dillip Prasad P., Gokulvasan V., Guna Sekar G., and Gokul J. 2026. “Corner Perturbation-Enabled Dual-Resonant Circularly Polarized Antenna for Resilient UAV Networks”. IRO Journal on Sustainable Wireless Systems 8 (3): 128-41. https://doi.org/10.36548/jsws.2026.3.001.
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Keywords

Axial Ratio
Circular Polarization
Corner Perturbation
Defected Ground Structure
Dual-Band Patch Antenna
U-slot

Abstract

In this paper, the development process of a miniature dual-band CP (circularly polarized) microstrip patch antenna is presented for wireless onboard communication in unmanned aerial vehicles (UAVs). It is designed to work in 2.4GHz and 5.2GHz ISM (industrial, scientific, and medical) Wi-Fi bands for achieving high spectral efficiency and communication reliability for critical UAV applications like autonomous monitoring, swarm operations, and emergency communications. The CP radiation technique is used in order to eliminate polarization loss as it is sensitive to the different orientations of aerial platforms. The proposed antenna is composed of an integrated U-slot and two stubs and has asymmetrical corners for obtaining orthogonal modal excitation required for CP operation. A DGS (defected ground structure) cell is also embedded to extend the bandwidth range. The proposed antenna is made up of a FR-4 dielectric substrate, with a compact footprint of 48 × 39 × 1.6 mm³. According to electromagnetic modeling studies, the highest realized gain for the proposed antenna occurs at 3.29 dBi at 2.4 GHz and 2.54 dBi at 5.2 GHz, with impedance bandwidths of 163 MHz and 600 MHz, respectively.

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