% \begin{figure}[h!]
%   \centering
\shorthandoff{:!}
    \begin{circuitikz}[scale=1.2]
      \draw (0,0) rectangle (2,2) node [midway] {Filter};
      \node at (1,0.5) {$Y_f$};
%       \draw (-2.,1.75) to[resistor,i>^=$i_a$,l=$Z_a$] (0,1.75);
      \draw (-2.,1.75) to[resistor,i>^=$ i_a$,l=$Z_a$] (0,1.75);
      \draw (2.,1.75) -- (3.,1.75)  (3.,0.25) -- (2,0.25);
      \draw (-2.,0.25)--(0,0.25) ;
      \node at (-1,-0.1) {} ;
      \draw[-triangle 45] (-0.2,0.3) -- (-0.2,1.7) node[left, midway] {$V_{fe}$};
       \draw  (-2.,1.75)to[resistor, l=$R_{rad}$, *-*] (-2.,0.25);
       
%       \draw [postaction={decorate,decoration={markings,mark=at position .55 with {\arrow[thick,arrowstyle]{latex}}}}] (-1,1.75)--(0.,1.75)  node[above,midway] {$i_{e}$};
      \draw[-triangle 45] (2.6,0.3) -- (2.6,1.7) node[left, midway] {$V_{fs}$};
       \draw[triangle 45 -] (-2.,2.5) -- (-0.2,2.5) node[above, midway] {$V_{a}$};

       \draw[-triangle 45] (-2.4,0.3) -- (-2.4,1.7) node[left, midway] {$V_{e}$};
             \draw (3.,1.75) to[capacitor,i>^=$ i_c$,l=$C_l$] (3.,0.25) -- (2,0.25);
    \end{circuitikz} 
    \shorthandon{:!}
%  \caption{Schéma de principe de l'ensemble $\lbrace Antenne \, + \, Filtre \, + \, Capacit\acute{e} \rbrace$}
%  \label{fig33}
% \end{figure}