使用 circuitikz 绘制图表的正确方法

Question

有人能用画出这个电路吗circuitikz？

我画了图，但是不知道如何像图中那样在两个端口上方画出箭头。

\begin{circuitikz} 
\draw (0,0) to [twoport,t=G,v^<= .] (2,0) (2,0) -- (4,0)node[anchor=west]{AG} (2,0) |- (4,-1)node[anchor=west]{AG} (-1,0)node[anchor=east]{A} --(0,0) (6,-0.5)node[]{\Large$\Rightarrow$} (8,0)node[anchor=east]{A} (9,0) (10,0) to [twoport,t=G] (12,0)node[anchor=west]{AG} (10,-1.5) to [twoport,t=G] (12,-1.5)node[anchor=west]{AG} (8,0) -- (10,0) (9,0) |- (10,-1.5) ; 
\end{circuitikz}