A wide band circularly polarized CP) printed monopole antenna is proposed. The 3 -dB axial ratio (AR) is realized by protruding a horizontal stub from a vertical monopole and creating a slot on the ground plane beneath the protruded stub. The monopole and slot resemble rotated T- shape structures when viewed from the top. The proposed antenna has a size of 25 × 25 mm2. Numerical results show that the antenna can realize an S11 ≤ -10 dB impedance bandwidth of 85.6 % from 4 -10 GHz, and a broadband 3 -dB AR bandwidth of 73.9 %, from 4.54 – 9.8 GHz. The pro posed antenna is simple to design, compact and suitable for circular polarization applications in C band.

How to Cite
SANI ELLIS, Mubarak. A Circularly Polarized Planar Monopole Antenna with Wide AR Bandwidth using a Novel Radiator/Ground Structure. Global Journal of Research In Engineering, [S.l.], july 2017. ISSN 2249-4596. Available at: <https://engineeringresearch.org/index.php/GJRE/article/view/1586>. Date accessed: 25 jan. 2022.