A Dual-Band Circularly Polarized with Large Impedance Bandwidth Planar Monopole Antenna for Wireless Application

The outlining and design of a dual-band planar monopole antenna is presented in this work. A novel structured monopole antenna is designed and analyzed for dual-band applications. The proposed work covered dual circularly polarization (CP) bands along with broad impedance bandwidth (IBW). The designed antenna consists of a half-moon, full moon slotted rectangular modified radiator with partial ground plane. By fine-tuning, the slot size and ground plane with desired CP radiation are found at desired impedance bandwidth. The physical dimension of the antenna is given by \(0.49\lambda_{0} \times 0.40\lambda_{0} \times 0.02\lambda_{0}\) . The −10 dB IBW is 11.01 GHz (3.59–14.6 GHz) with center frequency of 9.1 GHz having parentage of IBW 121.05% is conformed. The dual 3 dB axial ratio bandwidth (ARBW) of 2.24 GHz (3.65–5.89 GHz) and 0.7 GHz (9.05–9.75 GHz) are achieved. The proposed antenna is very simple to design, and it can be applied for 5G application, S-band radar, and maritime radio navigation.