\begin{tikzpicture}[scale=2.54] % dpic version 2020.03.01 option -g for TikZ and PGF 1.01 \ifx\dpiclw\undefined\newdimen\dpiclw\fi \global\def\dpicdraw{\draw[line width=\dpiclw]} \global\def\dpicstop{;} \dpiclw=0.8bp \dpiclw=0.8bp \dpicdraw (0.145,-0.25) rectangle (0.895,0.25)\dpicstop \dpicdraw (0.145,0.125) --(0.02,0.125)\dpicstop \dpicdraw[fill=black](0.02,0.125) circle (0.007874in)\dpicstop \dpicdraw (0.145,-0.125) --(0.02,-0.125)\dpicstop \dpicdraw[fill=black](0.02,-0.125) circle (0.007874in)\dpicstop \dpicdraw (0.895,0.125) --(1.02,0.125)\dpicstop \dpicdraw[fill=black](1.02,0.125) circle (0.007874in)\dpicstop \dpicdraw (0.895,-0.125) --(1.02,-0.125)\dpicstop \dpicdraw[fill=black](1.02,-0.125) circle (0.007874in)\dpicstop \draw (0.02,0.125) node[above left=1bp]{\sl W1a}; \draw (0.02,-0.125) node[below left=1bp]{\sl W1b}; \draw (1.02,0.125) node[above right=1bp]{\sl E1a}; \draw (1.02,-0.125) node[below right=1bp]{\sl E1b}; \dpicdraw[fill=white!90!black](1.895,-0.5) rectangle (3.895,0.5)\dpicstop \draw (2.895,0) node{n-port}; \dpicdraw (1.895,0.25) --(1.77,0.25)\dpicstop \dpicdraw[fill=black](1.77,0.25) circle (0.007874in)\dpicstop \dpicdraw (1.895,-0.25) --(1.77,-0.25)\dpicstop \dpicdraw[fill=black](1.77,-0.25) circle (0.007874in)\dpicstop \dpicdraw (2.180714,0.5) --(2.180714,0.625)\dpicstop \dpicdraw[fill=black](2.180714,0.625) circle (0.007874in)\dpicstop \dpicdraw (2.752143,0.5) --(2.752143,0.625)\dpicstop \dpicdraw[fill=black](2.752143,0.625) circle (0.007874in)\dpicstop \dpicdraw (3.037857,0.5) --(3.037857,0.625)\dpicstop \dpicdraw[fill=black](3.037857,0.625) circle (0.007874in)\dpicstop \dpicdraw (3.609286,0.5) --(3.609286,0.625)\dpicstop \dpicdraw[fill=black](3.609286,0.625) circle (0.007874in)\dpicstop \dpicdraw (3.895,0.4) --(4.02,0.4)\dpicstop \dpicdraw[fill=black](4.02,0.4) circle (0.007874in)\dpicstop \dpicdraw (3.895,0.2) --(4.02,0.2)\dpicstop \dpicdraw[fill=black](4.02,0.2) circle (0.007874in)\dpicstop \dpicdraw (3.895,0.1) --(4.02,0.1)\dpicstop \dpicdraw[fill=black](4.02,0.1) circle (0.007874in)\dpicstop \dpicdraw (3.895,-0.1) --(4.02,-0.1)\dpicstop \dpicdraw[fill=black](4.02,-0.1) circle (0.007874in)\dpicstop \dpicdraw (3.895,-0.2) --(4.02,-0.2)\dpicstop \dpicdraw[fill=black](4.02,-0.2) circle (0.007874in)\dpicstop \dpicdraw (3.895,-0.4) --(4.02,-0.4)\dpicstop \dpicdraw[fill=black](4.02,-0.4) circle (0.007874in)\dpicstop \dpicdraw (2.048846,-0.5) --(2.048846,-0.625)\dpicstop \dpicdraw[fill=black](2.048846,-0.625) circle (0.007874in)\dpicstop \dpicdraw (2.356538,-0.5) --(2.356538,-0.625)\dpicstop \dpicdraw[fill=black](2.356538,-0.625) circle (0.007874in)\dpicstop \dpicdraw (2.510385,-0.5) --(2.510385,-0.625)\dpicstop \dpicdraw[fill=black](2.510385,-0.625) circle (0.007874in)\dpicstop \dpicdraw (2.818077,-0.5) --(2.818077,-0.625)\dpicstop \dpicdraw[fill=black](2.818077,-0.625) circle (0.007874in)\dpicstop \dpicdraw (2.971923,-0.5) --(2.971923,-0.625)\dpicstop \dpicdraw[fill=black](2.971923,-0.625) circle (0.007874in)\dpicstop \dpicdraw (3.279615,-0.5) --(3.279615,-0.625)\dpicstop \dpicdraw[fill=black](3.279615,-0.625) circle (0.007874in)\dpicstop \dpicdraw (3.433462,-0.5) --(3.433462,-0.625)\dpicstop \dpicdraw[fill=black](3.433462,-0.625) circle (0.007874in)\dpicstop \dpicdraw (3.741154,-0.5) --(3.741154,-0.625)\dpicstop \dpicdraw[fill=black](3.741154,-0.625) circle (0.007874in)\dpicstop \draw (1.77,0.25) node[left=1bp]{\sl W1a}; \draw (1.77,-0.25) node[left=1bp]{\sl W1b}; \draw (4.02,0.4) node[right=1bp]{\sl E1a}; \draw (4.02,-0.4) node[right=1bp]{\sl E3b}; \draw (2.180714,0.625) node[above=1bp]{\sl N1a}; \draw (2.752143,0.625) node[above=1bp]{\sl N1b$\;\;$}; \draw (3.037857,0.625) node[above=1bp]{\sl $\;\;$N2a}; \draw (3.609286,0.625) node[above=1bp]{\sl N2b}; \draw (2.048846,-0.625) node[below=1bp]{\sl S1a}; \draw (3.741154,-0.625) node[below=1bp]{\sl S4b}; \draw (2.895,-0.725) node{$\cdots$}; \draw (4.17,0.05) node{$\vdots$}; \dpicdraw (4.895,-0.166667) rectangle (5.395,0.166667)\dpicstop \dpicdraw (4.895,0) --(4.77,0)\dpicstop \dpicdraw[fill=black](4.77,0) circle (0.007874in)\dpicstop \dpicdraw (5.395,0) --(5.52,0)\dpicstop \dpicdraw[fill=black](5.52,0) circle (0.007874in)\dpicstop \dpicdraw (5.145,-0.166667) --(5.145,-0.291667)\dpicstop \dpicdraw[fill=black](5.145,-0.291667) circle (0.007874in)\dpicstop \draw (4.77,0) node[left=1bp]{\sl W1}; \draw (5.52,0) node[right=1bp]{\sl E1}; \draw (5.145,-0.291667) node[below=1bp]{\sl S1}; \draw (0.52,-0.55) node{\tt nport}; \draw (2.895,-0.895) node{\tt nport(wid 2.0 ht 1 fill\_(0.9) "n-port",1,2,3,4)}; \draw (5.145,-0.611667) node{\tt nterm}; \end{tikzpicture} \vspace*{-0.5\baselineskip}