Feather-shaped super wideband MIMO antenna

• Published in: International journal of microwave and wireless technologies Vol. 13; no. 1; pp. 94 - 102
• Main Author: Singhal, Sarthak
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.02.2021
• Subjects: Antenna Design, Modelling and Measurements; Antennas; Bandwidths; Broadband; Communication; Configurations; Coplanar waveguides; Correlation coefficients; Design; Feathers; Ground plane; Radiators; Spectrum allocation; Wireless networks; super wideband applications; coplanar waveguide feeding; Feather shaped monopole; multiple input multiple output antenna
• ISSN: 1759-0787; 1759-0795
• DOI: 10.1017/S1759078720000549

Two configurations of a modified feather-shaped antenna element are proposed for super wideband (SWB) multiple-input multiple-output (MIMO) applications. The antenna element geometry comprises of a circular slot-loaded feather-shaped radiator and rectangular notch-loaded quarter elliptical coplanar waveguide ground plane. An operating bandwidth of 4.4–51.5 GHz with inter-port isolation, S21 ≥ 15 dB for spatial diversity configuration, and 3.8–51.5 GHz with S21 ≥ 15 dB in pattern diversity configuration are achieved. The footprints of the antenna configurations are 17 × 33 and 31 × 31 mm2. Both configurations exhibited an envelope correlation coefficient of <−20 dB. The proposed MIMO configurations are fabricated and experimentally validated. The designed antenna configurations are SWB and compact.