## 7 Conclusions
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Reference/Year**} & \multirow{2}{*}{\begin{tabular}{c} **Overall** \\ **Size 1 (\(\Delta^{2}\) \& mm\({}^{2}\))** \\ \end{tabular} } & \begin{tabular}{c} **Permittivity** \\ **and** \\ **Thickness** \\ \end{tabular} & \multirow{2}{*}{\begin{tabular}{c} **\& **\% Miniaturisation** \\ **Tickness** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Resonant** \\ **Frequency** \\ **(GHz)** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Gain** \\ **(dBi)** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **No. of** \\ **Bands** \\ \end{tabular} } \\ \hline
[5]/ & - & 4.4 & \multirow{2}{*}{0.75} & \multirow{2}{*}{-} & 0.926 & 0.32 & \multirow{2}{*}{3} & \multirow{2}{*}{-} \\
2018 & 20 \(\times\) 21 & & 1.6 & & 1.57 & 1.2 & & \\ \hline
[6]/ & - & 3 & \multirow{2}{*}{0.79} & \multirow{2}{*}{44.94} & \multirow{2}{*}{1.36} & \multirow{2}{*}{1.77} & \multirow{2}{*}{1} & \multirow{2}{*}{1.13} \\
2021 & 60 \(\times\) 70 & & 1.524 & & & & & \\ \hline
[8]/ & 0.197 \(\times\) 0.246 & 2.2 & \multirow{2}{*}{0.98} & \multirow{2}{*}{-} & \multirow{2}{*}{14.76} & \multirow{2}{*}{7.16} & \multirow{2}{*}{1} & \multirow{2}{*}{7.96} \\
2017 & 4 \(\times\) 5 & & 2.6 & & & & & \\ \hline
[20]/ & - & 2.2 & \multirow{2}{*}{-} & \multirow{2}{*}{24} & \multirow{2}{*}{6.3} & \multirow{2}{*}{1} & \multirow{2}{*}{-} \\
2017 & 40.7 \(\times\) 61 & & 1.27 & & & & & \\ \hline
[22]/ & - & 4.4 & \multirow{2}{*}{-} & \multirow{2}{*}{81.3} & \multirow{2}{*}{5} & \multirow{2}{*}{3.47} & \multirow{2}{*}{2} & \multirow{2}{*}{-} \\
2019 & 40 \(\times\) 20 & & 1.6 & & & & & \\ \hline
[24]/ & 0.177 \(\times\) 0.243 & 2.2 & \multirow{2}{*}{0.943} & \multirow{2}{*}{-} & \multirow{2}{*}{13.25} & \multirow{2}{*}{7.09} & \multirow{2}{*}{1} & \multirow{2}{*}{7.96} \\
2016 & 4 \(\times\) 5.5 & & 2.36 & & & & & \\ \hline
[25]/ & - & 4.4 & \multirow{2}{*}{-} & \multirow{2}{*}{50} & \multirow{2}{*}{2.9} & \multirow{2}{*}{-4.5–3.1} & \multirow{2}{*}{3} & \multirow{2}{*}{-} \\
2020 & 100 \(\times\) 100 & & & & & & & \\ \hline
[26]/ & 0.161 \(\times\) 0.192 & 2.2 & \multirow{2}{*}{0.775} & \multirow{2}{*}{-} & \multirow{2}{*}{9.51} & \multirow{2}{*}{3.2} & \multirow{2}{*}{1} & \multirow{2}{*}{5.37} \\
2010 & - & 3.175 & & & & & & \\ \hline Proposed & 0.164 \(\times\) 0.164 & 4.4 & \multirow{2}{*}{0.72} & \multirow{2}{*}{60.7} & \multirow{2}{*}{2.4} & \multirow{2}{*}{3.8} & \multirow{2}{*}{2} & \multirow{2}{*}{1.63} \\
20 & 20 \(\times\) 20 & & 1.6 & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Performance comparison of the proposed antenna with the other microstrip patch antennas loaded with metamaterial. **Author Contributions:** [PERSON] made substantial contributions to the conception, design, analysis, conducting experiments and writing the manuscript; [PERSON] analysed the obtained results, revised the manuscript, provided intellectual suggestions and supervised the whole research. All authors have read and agreed to the published version of the manuscript. This research received no external funding. **Data Availability Statement:** Not applicable. **Conflicts of Interest:** The authors declare no conflict of interests.