$4 \times 4$ Massive MIMO Antennas for 39 GHz Millimeter-Wave Applications

This paper shows a compacted design of $4\times 4$ Massive Multiple Input Multiple Output (mMIMO) antennas that will be used for future 39 GHz millimeter-wave (mm-Wave) effective communications required for 5^th Generation (5G) networks. The 5G networks not only support a high data rate but also accommodates excessive internet traffic. The proposed single element antenna is designed on Rogers RT5880 (lossy) with a maximum dimension of $10\times 8.8\ mm^{2}$. The proposed design consists of $4\times 4$ MIMO with defected ground structure, improves the isolation between MIMO antenna elements. The required band is covered by this proposed MIMO structure, which ranges from 38.26 GHz to 39.69 GHz, covering a bandwidth of around 1.43 GHz. Peak gain obtained in the required band is 6.38 dB. Moreover, the results of the Envelope Correlation Coefficient (ECC), Diversity Gain (DG), and the Mean Effective Gain (MEG) have also been discussed. The simple planar design and radiation qualities approve the proposed massive MIMO structure, exhibiting an appropriate contender for future mm-Wave 5G applications.