% Author: Prof. Dr. Matthias Jung, DL9MJ
% Year: 2026
\begin{circuitikz}
    \draw(0,0)
        node [anchor=east](){$f=\qty{3.5}{\mega\hertz}$}
        to [short, o-] ++(1.5,0)
        node [twoportsplitshape,anchor=west,t1=f,t2={2\,f}](f1){};
    \draw(f1.east)
        to [short, -o] ++(1.5,0)
        node [anchor=west](){$f=\qty{7.0}{\mega\hertz}$};
\end{circuitikz}