Affiliations: [a] Space Science Centre (ANGKASA), Universiti Kebangsaan Malaysia, Selangor, Malaysia | [b] Department of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Selangor, Malaysia
Correspondence:
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Corresponding author: T. Alam, Space Science Centre (ANGKASA), Universiti Kebangsaan Malaysia, 43600UKM, Bangi, Selangor, Malaysia. E-mail:touhid13@siswa.ukm.edu.my
Abstract: A novel compact microstrip patch circularly polarised antenna for mobile wireless application is presented in this paper. The proposed antenna is incorporated with
quadrilateral shape radiator, inverted S-shape partial ground plane and 50
Ω microstrip feed line. A wide impedance bandwidth of 109.13%
(1.69-5.75 GHz with measured 3 dB axial ratio (AR) bandwidth of 22.22%
(2-2.5 GHz) is realized with overall electrical size of
0.26 λ × 0.21 λ × 0.01 λ at
lower-end frequency. The antenna also exhibits good performance of
circular polarization (CP) radiation with lower 3d B AR beamwidth of ± 60°.
In addition, the specific absorption rate of the presented antenna is analysed.
Keywords: Antenna, circular polarization, wideband, wireless communication
