Novel Ultrawide band Multi Input/Multi Output Antenna Design with Single Notch Characteristics and Investigation with Improved Isolation

The research work proposes a MIMO i.e. multi input multi output antenna in circular shape with sufficient isolation for ultrawide band applications with single notch characteristics. To reduce mutual coupling among MIMO elements, a decoupling stub is utilized, which can reach up to - 50 dB over the bandwidth. The suggested antenna is suitable for usage in both UWB applications. The suggested antenna is 28*26*1.57 mm3 in overall dimension. In the range of 3–12 GHz, the S11 i.e. the return loss parameter and VSWR are less than -10 dB and 2, subsequently for the considered ultrawide band MIMO antenna. The recommended ultrawide band antenna design has an impedance bandwidth of about 9 GHz. The recommended antenna is designed and simulated in HFSS.