% Author: Dr. Matthias Jung, DL9MJ
% Year: 2021
\begin{circuitikz}

    \draw[-Triangle](0.0,0.0) -- (5.0,0.0);

    \draw[-Triangle](0,0) -- (5.0,0.0) 
        node[anchor=north east] () {$f$};
    \draw[-Triangle](0.0,0.0) -- (0.0,3.0)
        node[rotate=90, anchor=south east] () {Leistung};
    \draw(2.5,-0.35) node[] () {29\,MHz};

    \draw[thick, black] (0,0) 
          -- ++(0.1,0)
          [rounded corners=2mm]
          cos ++(2.2, 2.5)
          sin ++(0.2, 0.25);

    \draw[thick, black] (4.9,0) 
          [rounded corners=2mm]
          cos ++(-2.2,2.5)
          sin ++(-0.2, 0.25);

    \draw [dashed] (2.5,0) -- (2.5,3);
\end{circuitikz}