Title: A compact low profile wideband circularly polarised antenna for WLAN applications

Authors: Aylapogu Pramod Kumar

Addresses: Department of Electronics and Communication Engineering, Vardhaman College of Engineering, Hyderabad, India

Abstract: In the past decade, the rapid improvement in wireless communication system has motivated extended research on low profile, compact and cost effective circularly polarised wideband patch antenna. A flexible and new design of wideband circularly polarised antenna finds application of WLAN. The proposed CP wide band antenna contains a rectangular radiating patch with slots on the opposite sides of the patch to achieve CP and the o-shaped semi-circle with squares inscribed to get wide band with truncated ground to achieve two resonating frequencies on little cost FR4-substrate bear thickness of 1.6 mm. The proposed final design of the antenna is resonating at frequencies 4 GHz and 5 GHz respectively with good impedance matching values of -37.44 dB and -49.72 dB. The propose structure is maintaining its VSWR at the respective bands from 1-2 with antenna gain around 2.5 dBi. The main objective of this article is to achieve the wide bandwidth and circular polarisation with minimal interferences.

Keywords: WLAN; gain; bandwidth; S₁₁; VSWR.

DOI: 10.1504/IJSCC.2023.129928

International Journal of Systems, Control and Communications, 2023 Vol.14 No.2, pp.168 - 179

Received: 31 Oct 2021
Accepted: 14 Apr 2022
Published online: 03 Apr 2023 *

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