A low-profile circularly polarized microstrip antenna using elliptical electromagnetic band gap structure
Published online by Cambridge University Press: 28 September 2021
Abstract
This study investigates a low-profile circularly polarized (CP) antenna using coplanar waveguide feeding. Rectangular-shaped slots and an inverted L-shaped slit are entrenched into the ground plane to enhance the impedance bandwidth of the antenna. Furthermore, the antenna is implemented with six elliptical electromagnetic band gap structures on its substrate to enhance the −10 dB return loss bandwidth and also to generate CP waves. The experimental and theoretical results closely match each other and indicate that a simple and compact design antenna with dimensions of 0.317λ0 × 0.317λ0 × 0.023λ0(λ0 is the operating wavelength at 4.74 GHz in free space) achieves 36.9% (3.91–5.68 GHz) of the −10 dB return loss bandwidth and 9.98% (4.09–4.52 GHz) of the 3-dB axial ratio bandwidth, thus making it a favorable entrant for radio altimeter and wireless avionics infra-communication systems.
- Type
- Antenna Design, Modelling and Measurements
- Information
- International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 8 , October 2022 , pp. 1009 - 1018
- Copyright
- Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association
References
- 6
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