und structure is inserted in the base plane, and the value of common coupling may be suppressed for levels of 37.5 dB within the operating band among the antennas in [9]. [10] shows a different way of adding the neutralization line that improves the isolation between two similar antennas up to >25 db. A compact UC-EBG uniplanar electro- magnetic band gap UWB MIMO antenna, with isolation superior to 18 dB throughout the whole impedance spectrum is also described in [11]. Multiple networks of nar- rowband wireless, such as 5G, having 3.6 GHz center frequency or Wi-Fi 6E having 6GHz center frequency, may generate significant interference within the FCC- assigned radio spectrum of UWB (3.1-10.6GHz). To alleviate this problem, band stop filter circuits may be incorporated into UWB devices, although this increases the cost and size of systems [12]. In [13-16], several UWB-MIMO antenna designs have been observed to exhibit band-notch behavior. In [13], a U-shaped slot is added on the surface of the antenna element to prevent current dispersion at 5.5 GHz. Two separate slits are loaded on each antenna element by the developers in [14] to give dual band rejection capabilities for Wi-MAX at 3.5 GHz and WLAN at 5.5 GHz. [15] produces a tri-band rejection concept by etching rotating C-shaped slots on the patches and rectangular shape slots on the base planes. Metamaterial structures (ELC) were used as a supplementary strategy for inducing notched resonance in the construction for UWB antennas [16]. SRRs and their related complements display LC resonator cir- cuit behavior depending on their topology, and their permittivity and permeability are extracted with the use of Nicolson-Ross or transmission or reflection approaches [17]. The goal is to design planar antenna having a small footprint, low mutuality, and high multiband rejection. The authors of this paper study a variety of EBG topologies on basic microstrip antennas in order to reduce mutual coupling (MC) among components for a 4-port MIMO antenna in IoT applications. 