\documentclass{scrartcl}
\usepackage{color}
\usepackage{multicol}
\usepackage[final]{graphicx}
\usepackage{pst-plot,pstricks}
\begin{document}
	\psset{xunit=1cm,yunit=5cm}
	\begin{pspicture}(-0.5,-0.1)(10.5,1.1)
		\psaxes[Dx=20,Dy=1]{->}(0,0)(-0.5,-0.1)(10.5,1.1)
		\psplot[plotstyle=curve]{0}{10}{x 5 div 3 add x 5 div 8 exp 1 add 4 mul div}
		\psplot[plotstyle=curve,linestyle=dashed]{0}{10}{1}
		\rput[l](10.5,0){$\omega$}
		\rput[r](-0.1,1.1){$\left|\underline{H}\left(j\omega\right)\right|$}
	\end{pspicture}
\end{document}
