###### Abstract
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Ref.** & **Freq** & **Substrate** & **Sub** & **Patch** & **Gain** & **Bandwidth** & **Efficiency** & **Transp-** & **Transmitance** \\ \hline
[12] & 2.53 & Glass & 2 mm & AgHT-4 & 9.8 & 2.49– & - & - & 75 \\  & & & & & & 2.58 GHz & & & \\ \hline
[13] & 28 & Glass & 2.54 mm &
\begin{tabular}{c} ITO, FTO, \\ AgHT-4, \\ AgHT-8 \\ \end{tabular} & 4.8, 4.2, & 26– & 81, 73, 75, 73 & - & - \\ \hline
[14] & 3.5 & Glass & 2.3 mm & AgHT-4 & 3.96 & 3.49– & 50 & - & 92 \\ \hline
[15] & 5.25 & Polyimide & - &
\begin{tabular}{c} IZTO/Ag \\ /IZTO \\ \end{tabular} & 4.1–5.2 & 4.7– & 61–82 & - & - \\ \hline
[16] & 9.85 &
\begin{tabular}{c} Quartz \\ glass \\ \end{tabular} & 1.5 mm & ITO & 4.27 & - & 56 & - & - \\ \hline
[17] & 5.8 & Glass & 1 mm & ITO & 6 & 5.7-6 GHz & - & - \\ \hline
[18] & 0.1–1 THz & Polyimide & 0.013 mm & Polymer & - & - & - & 80 \\ \hline
[19] & 3, 5, 8, 13 & \
\begin{tabular}{c} Borosilicate \\ glass \\ \end{tabular} & 7 nm & Cu, ITO &
\begin{tabular}{c} \(-4,-2,\) \\ 0.5, 2 \\ \end{tabular} & 3.1– & 27, 25, 20, & 88 & - \\ \hline
[20] & 24.8 & \
\begin{tabular}{c} Pyrex \\ glass \\ \end{tabular} & 0.4 μm & ITO & 11.5 &
\begin{tabular}{c} 17– \\ 30 GHz \\ \end{tabular} & 92.30 & - & - \\ \hline
[21] & 2.45 &
\begin{tabular}{c} Soda– \\ line \\ glass \\ \end{tabular} & 2 mm & MM & 2–3 GHz & - & & 75 \\ \hline
[22] & 2 &
\begin{tabular}{c} Corning \\ glass \\ \end{tabular} & 1.1 mm & AgGL & 5.2 & 19.7\% & 60 & 51–70 & - \\ \hline
[23] & 1-8.5 & Perspex & 2 mm & AgHT-4 &
\begin{tabular}{c} \(-2.5\) to \\ \(-33\) \\ \end{tabular} & 1–10 GHz & - & - & - \\ \hline
[24] & 2, 6 & \
\begin{tabular}{c} Corning \\ glass \\ \end{tabular} & 1.1 mm & AgGL & 2–6 &
\begin{tabular}{c} 2.5– \\ 5.3 GHz \\ \end{tabular} & - & 80 & \\ \hline
[25] & 750 & Polyimide & 20μm & \
\begin{tabular}{c} ITO,TIO \\ with \\ MWCNT \\ \end{tabular} & 4.5–5.8 &
\begin{tabular}{c} 723– \\ 780 GHz \\ \end{tabular} & 47–61 & - & - \\ \hline
[26] & 23.92–43.8 & Plexiglass & 1.48 mm & - & 2.8 & 23.92– & 90 & - & - \\ \hline
[27] & 2.4 &
\begin{tabular}{c} Silica \\ glass \\ \end{tabular} & 1.4 μm & GZO & - & - & - & - & - \\ \hline
[28] & 2.5, 5 &
\begin{tabular}{c} Pyrex \\ glass \\ \end{tabular} & 4 mm & FTO & 0.43, 3.63 & - & 72 & - & 74–84 \\ \hline
[29] & 2.45, 5.8 & PET & 0.175 mm & AgHT-8 & \
\begin{tabular}{c} \(-3.25,\) \\ \(-4.53\) \\ \end{tabular} &
\begin{tabular}{c} 1.6–2.95, \\ 5.4–6.4 \\ \end{tabular} & 80 & \\ \hline
[30] & 4.9 &
\begin{tabular}{c} Soda– \\ line \\ glass \\ \end{tabular} & - & FTO & 5.16 & 0.8 GHz & - & - & 60 \\ \hline
[31] & 2.4 & PET & 0.05 mm & ITO & \(-1.36\) & 2.2–3 GHz & 20–52 & 96 & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Summary of optical transparent antennas using mesh grid. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Ref** & **Freq** & **Substrate** & **Sub** & **Patch** & **Gain** & **Bandwidth** & **Efficiency** & **Transp-** & **Transmitance** \\ \hline
[32] & 0.84 & Glass & 0.006 mm & Ag/Ti & - & 85 & 81 & - \\ \hline
[33] & 2.4–2.5 & Acrylic & 1.2 mm & Metal mesh & 4.14 & 2.48– & 56 & 82 & - \\ \hline
[34] & 18 & Quartz & - & ITO/metal mesh & - & - & 38, 41 & - & 73–95, 66–94 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Summary of optical transparent antennas using mesh grid.