High gain wideband circularly polarized antenna with modified ground plane

Rehab Ibrahim Nawar, Ashraf Yahia Hassan, Abdelhady Mahmoud Abdelhady

Abstract


In this study, a high-gain wideband circularly polarized (CP) printed monopole antenna for wireless local-area network (WLAN), worldwide interoperability for microwave access or WiMAX, C-band, and multiple input, multiple output (MIMO) applications was proposed and demonstrated. The proposed antenna structure has an octal-shaped monopole antenna tilted by 20° from its longitudinal axis, excited by coaxial probe feeding, and partial ground plane. To achieve broadband CP performance, the ground plane was redesigned with etching slots. A 1.6-mm-deep FR-4 (Ԑr = 4.3) substrate with dimensions of 70 x 55 mm2 is used to create and test a prototype of the suggested antenna. The proposed antenna's measurement results satisfy requirements for a broad ARBW of 107% (1.83-6.05 GHz), a broad impedance bandwidth of 139.39% (2-11.2 GHz), and a maximum gain of 7.28 dBi.


Keywords


Axial ratio bandwidth; Circularly polarized; Monopole antenna; Octal-shaped; Wideband

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DOI: http://doi.org/10.11591/ijeecs.v32.i1.pp284-291

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Indonesian Journal of Electrical Engineering and Computer Science (IJEECS)
p-ISSN: 2502-4752, e-ISSN: 2502-4760
This journal is published by the Institute of Advanced Engineering and Science (IAES) in collaboration with Intelektual Pustaka Media Utama (IPMU).

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