## 4 Conclusions  
In this paper, an integrated patch antenna is proposed. The proposed prototype consists of two different MIMO configurations, one referred to as mid-band MIMO configuration and the other as mmWave 5G MIMO configuration. The complete progression of the design is explained in detail and the design is analyzed in-depth for the analysis of \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Figure of** & **[16]** & **[17]** & **[18]** & **[20]** & **[21]** & **[22]** & **[23]** & **Proposed** \\ \hline \hline \multicolumn{10}{c}{**Mid-Band Antenna**} \\ \hline ECC & \textless{}0.4 & \textless{}0.15 & 0.0058 & \textless{}0.04 & No & No & \textless{}0.2 & \textless{}0.05 \\ \hline CCL (bits/Hz) & Not provided & Not provided & Not provided & Not provided & Not provided & \textless{}0.3 & \textless{}0.2 \\ \hline Minimum & & & & & & & & \\ isolation & & & & & & & & \\ between & & & & & & & & \\ MIMO & & & & & & & & \\ antenna & & & & & & & \\ elements (dB) & & & & & & & & \\ \hline Diversity & Not provided & Not provided & Not provided & Not provided & Not provided & \textgreater{}9.95 & \textgreater{}9.99 \\ \hline Radiation & 62–78 & 41-82 & 75 & 75-90 & 71-79 & 50–90 & 71 & 96.3 \\ \hline Gain (dBi) & 3.7 & Not provided & 4.39 & 2.15 & 3.3,5.4 & Not provided & 5.13 & 5.29 \\ \hline MIMO & & & & & & & & \\ functionality & & & & & & & & \\ \hline \multicolumn{10}{c}{**mmWave 5G Antenna**} \\ \hline ECC & Not provided & Not provided & Not provided & 0.000001 & No & No & \textless{}0.05 & \textless{}0.01 \\ \hline CCL & Not provided & Not provided & Not provided & Not provided & Not provided & \textless{}0.4 & \textless{}0.2 \\ \hline Minimum & & & & & & & & \\ isolation & & & & & & & \\ between & & & & & & & \\ MIMO & & & & & & & & \\ antenna & & & & & & & \\ elements (dB) & & & & & & & \\ \hline \hline \multirow{2}{*}{Diversity gain} & Not provided & Not provided & Not provided & Not provided & Not provided & Not provided & \textgreater{}9.83 & \textgreater{}9.99 \\ \hline Radiation & Not provided & Not provided & Not provided & Not provided & 63 & 60–80 & 73 & 86 \\ \hline Gain (dBi) & Not provided & Not provided & 8.2 & 9 & 8.77 & 7 & 9.53 & 8.57 \\ \hline MIMO & & & & & & & & \\ functionality & No & No & No & Yes & No & No & Yes & Yes \\ \hline \end{tabular}
\end{table} 
Table 3: Comparison of the proposed design with the relevant literature. the performance. After the analysis, it was found that the proposed MIMO configurations have the highest isolation, when compared with 2D Flat (single or multilayer) antenna structures, and second highest in the mmWave band, when compared with conformal antenna structures. The proposed design has all the MIMO performance parameters within range, with the best values, when compared with 2D flat antenna designs. Therefore, the design can be used for the integrated mid-band and 5G-mmWave applications. Conceptualization, H.K., W.A.A. and M.A. ([PERSON]); methodology, software and validation, H.K., M.H., A.F. and N.H., S.K., M.A. ([PERSON]) and E.L.; formal analysis, investigation, resources and data curation, W.A.A., N.H. and M.A. ([PERSON]); writing--original draft preparation, H.K., A.F. and M.H. ; writing--review and editing, W.A.A., N.H., S.K., M.A. ([PERSON]) and E.L.; measurements, M.A. ([PERSON]); project administration, M.A. ([PERSON]) and E.L. All authors have read and agreed to the published version of the manuscript. This project has received funding from Universidad Carlos III de Madrid and the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant Agreement No 801538. As well as, this work was partially supported by the Antenna and Wireless Propagation Group ([[https://sites.google.com/view/awpgrp/home](https://sites.google.com/view/awpgrp/home)]([https://sites.google.com/view/awpgrp/home](https://sites.google.com/view/awpgrp/home)) accessed on 16 June 2021). In addition, it received funding from the Researchers Supporting Project number (RSP-2021/58), King Saud University, Riyadh, Saudi Arabia.