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Diffstat (limited to 'buch/papers/ellfilter/tikz/filter.tikz.tex')
| -rw-r--r-- | buch/papers/ellfilter/tikz/filter.tikz.tex | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/buch/papers/ellfilter/tikz/filter.tikz.tex b/buch/papers/ellfilter/tikz/filter.tikz.tex new file mode 100644 index 0000000..769602a --- /dev/null +++ b/buch/papers/ellfilter/tikz/filter.tikz.tex @@ -0,0 +1,32 @@ +\begin{tikzpicture}[>=stealth', auto, node distance=2cm, scale=1.2] + + \tikzstyle{zero} = [draw, circle, inner sep =0, minimum height=0.15cm] + + \tikzset{pole/.style={cross out, draw=black, minimum size=(0.15cm-\pgflinewidth), inner sep=0pt, outer sep=0pt}} + + \begin{scope}[xscale=3, yscale=2.5] + + \fill[darkgreen!15] (0,0) rectangle (1,1); + \node[darkgreen] at (0.5,0.5) {Durchlassbereich}; + \fill[orange!15] (1,0) rectangle (2.5,1); + \node[orange] at (1.75,0.5) {Sperrbereich}; + + \draw[gray, ->] (0,0) -- (0,1.25) node[anchor=south]{$|H(\Omega)|$}; + \draw[gray, ->] (0,0) -- (2.75,0) node[anchor=west]{$\Omega$}; + + \draw[dashed] (0,0.707) node[left] {$\sqrt{\frac{1}{1+\varepsilon^2}}$} -| (1,0) node[below] {$\Omega_p$}; + \draw[dashed] (0,0.707) node[left] {$\sqrt{\frac{1}{1+\varepsilon^2}}$} -| (1,0) node[below] {$\Omega_p$}; + + \node[left] at(0,1) {$1$}; + + \draw[red, thick] (0,1) -- (1,1) -- (1,0) -- (2.5,0); + + \node[anchor=north, red] at (0.5,1) {Ideal}; + + \draw[thick, domain=0:2.5, variable=\x, smooth, samples=200] plot + ({\x}, {sqrt(abs(1/ (1 + \x^10)))}); + \node[anchor=south] at (0.5,1) {Butterworth ($N=5$)}; + + \end{scope} + +\end{tikzpicture} |