A broadband low-profile dipole antenna comprised of a planar radiating half-wavelength dipole element placed above four corner cut parasitic patches on a perfect electric conductor ground plane is presented in this paper. Linearly polarized radiations are generated from the excited dipole and corner cut parasitic patches. Cutting the corners of the parasitic patches significantly enhances the bandwidth of the antenna while maintaining the overall antenna structure at a low profile. These improvements in impedance bandwidth are analyzed and validated by full-wave electromagnetic simulations. The antenna design has overall dimensions of 120 mm x 120 mm x 16.3 mm (0.66λo x 0.66λo x 0.09λo at 1.66 GHz), has aλ10 dB impedance bandwidth of 1.465-1.885 GHz (25.3%), a broadside gain range of 8.47-9.12 dBi, and a radiation efficiency > 98% within the impedance bandwidth.
This work was supported in part by Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. 2017-0-00959, University ICT Basic Research Lab), in part by \u2018\u2018Human Resources Program in Energy Technology\u2019\u2019 of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20164030201380).
