Improved bandwidth and F/B ratio of a CPW-fed planar monopole antenna

M.S. Ellis; A.-R. Ahmed; J.J. Kponyo; K.O. Gyasi; K.S.O. Kwakye; S. Ameyaw

Heliyon (Aug 2022)

Improved bandwidth and F/B ratio of a CPW-fed planar monopole antenna

M.S. Ellis,
A.-R. Ahmed,
J.J. Kponyo,
K.O. Gyasi,
K.S.O. Kwakye,
S. Ameyaw

Affiliations

M.S. Ellis: Corresponding author.; Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
A.-R. Ahmed: Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
J.J. Kponyo: Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
K.O. Gyasi: Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
K.S.O. Kwakye: Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
S. Ameyaw: Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana

Journal volume & issue: Vol. 8, no. 8
p. e10037

Abstract

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A directional planar monopole antenna is described. The antenna comprises of a circular monopole, coplanar waveguide (CPW) feed line and a ground plane. To achieve unidirectional radiation, a stub is also attached to on the ground plane to increase the lower end impedance bandwidth and also increase the Front-to-Back ratio (F/B). The proposed antenna is etched on a 50 × 50 mm2 FR4 substrate. Simulated and experimental results reveal that the proposed antenna can achieve an impedance bandwidth from 2.3 – 10.5 GHz for S11 < −10 dB, and unidirectional radiation patterns with high gain and high efficiency.

Published in Heliyon

ISSN: 2405-8440 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Science (General); Social Sciences: Social sciences (General)
Website: https://www.cell.com/heliyon/home

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