An Ultra-Compact 4-Port MIMO Antenna for Multiband Applications Including Bluetooth and UWB with Integrated Band-Stop Filters

This work reports an ultra-compact four-port MIMO antenna technology for Bluetooth-UWB applications which is fabricated on Arlon AD430 substrate with permittivity 4.30 applicable for microwave access. The square-radiating patch which radiates electromagnetic waves is etched with pair of L-shaped slits and embedded with T-shaped stubs, which provides the elimination of the two interfering electromagnetic energy bands, WLAN and WiMAX. 5.22dBi is the highest gain with acceptable 2-D radiation patterns
UWB
. The operating bandwidth of 2.32GHz-9.83GHz with band-stop filter bandwidth of 3.22GHz-3.98GHz and 4.97GHz-5.83GHz respectively is offered by the proposed MIMO
integrated
antenna. The designed MIMO
integrated
antenna offers good diversity performance i.e., high isolation between inter-spaced antenna elements, ECC $\lt 0.50$, and TARC $\lt -35.0dB$ in the operating bandwidth of interest. The antenna is useful for information and communication technologies and can be used for mobile networks.