A miniaturized triple-band circularly polarized antenna using meander geometry

Maharana Pratap Singh, Rahul Kumar Jaiswal, Kumar Vaibhav Srivastava and Saptarshi Ghosh

Journal of Electromagnetic Waves and Applications, 2022, vol. 36, issue 2, 228-236

Abstract: In this paper, a compact triple-band printed monopole antenna with circular polarization (CP) has been presented for C-band wireless applications. To achieve the triple-band CP response, the top layer of antenna geometry consists of a meander structure and two orthogonal stubs, whereas a ground plane consists of a vertical slot. The 10-dB impedance bandwidth of the proposed antenna is 450, 560, and 830 MHz at center frequencies of 4.1, 5.8, and 6.7 GHz, respectively. The 3-dB axial ratio (AR) bandwidth’s attained around center frequencies is 4.29%, 4.03%, and 3.52%, respectively. Additionally, the proposed design exhibits a miniaturized performance with an overall size of 0.35 × 0.39 × 0.017 λ, where λ represents free space wavelength at smallest CP frequency. Furthermore, the structure has a simple topology, broadside radiation, and sufficient moderate gain. The proposed antenna has been fabricated and its measured responses are in good agreement with the simulated results.

Date: 2022
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DOI: 10.1080/09205071.2021.1961612

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