Quad Port Miniaturized MIMO Antenna for UWB 11 GHz and 13 GHz Frequency Bands

Abstract A simple but effective four port miniaturized Multiple Input Multiple Output (MIMO) antenna operating at wide-Ultra-wideband (UWB) region (3-13.5 GHz) including UWB (3.1-10.6 GHz), 11 GHz (10.7 to 11.7 GHz) and 13 GHz (12.75 to 13.25 GHz) frequency bands is proposed here. The phenomenon of the polarization diversity by deploying four orthogonal antenna elements is used to enhance the isolation between the MIMO antenna elements. The overall size (40 × 40 × 1.524 mm3) of the antenna is reduced by mitigating the unwanted interaction between the antenna elements by modifying patch shape and placing them in closed proximity to each other. The simulated results are verified by the measurements of the prototpe MIMO antenna. The results are compared with the state of the art antennas to demonstrate the valuability of the proposed antenna for the UWB MIMO applications. The proposed miniaturized UWB MIMO antenna is a potential candidate for the compact and portable devices.