Design and analysis of a novel tri-band flower-shaped planar antenna for GPS and WiMAX applications

Sadiq Ullah, Farooq Faisal, Ashfaq Ahmad, Usman Ali, Farooq Ahmad Tahir and James A. Flint

Journal of Electromagnetic Waves and Applications, 2017, vol. 31, issue 9, 927-940

Abstract: This paper presents the design of a tri-band flower-shaped planar monopole antenna operating at three frequencies i.e. 1.576 (GPS), 2.668, and 3.636 GHz (Mobile WiMAX). The radiating element of the antenna is backed by a 1.6 mm thicker FR-4 substrate having a dielectric constant of 4.3. The substrate is backed by a truncated ground plane. The antenna is fed through a 50 Ω microstrip line. The flower shape of the radiating element is derived from the basic circular shape by introducing in it rounded slots of various radii. The upper part of the antenna is flower shaped while the lower part comprises a microstrip feed line and two branches, each having two “leaves” at the end. The leaves and branches contribute in the impedance matching of the lower (1.576 GHz) and middle (2.668 GHz) frequency bands. The antenna gives an acceptable simulated efficiency >70% in the three frequency bands. Suitable gains of 1.63, 2.59, and 3.23 dB are obtained at 1.576, 2.668, and 3.636 GHz, respectively. The antenna matched with a VSWR

Date: 2017
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DOI: 10.1080/09205071.2017.1330160

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