58 lines
1.6 KiB
TeX
58 lines
1.6 KiB
TeX
% Author: Dr. Matthias Jung, DL9MJ
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% Year: 2021
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\begin{tikzpicture}
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% Yagi:
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\draw[very thick, gray] plot[
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variable=\t,
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domain=0:360,
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smooth,samples=101
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]
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({180+60*sin(\t)}:{0.75*pow(sin(\t/2),9)});
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\draw[very thick, gray] plot[
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variable=\t,
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domain=0:360,
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smooth,samples=101
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]
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({35*sin(\t)}:{7*pow(0.95*sin(\t/2),5)});
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% Dipole:
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\draw[thick] plot[
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variable=\t,
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domain=0:360,
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smooth,samples=101
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]
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({180+90*sin(\t)}:{3*pow(sin(\t/2),9)});
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\draw[thick] plot[
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variable=\t,
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domain=0:360,
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smooth,samples=101
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]
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({90*sin(\t)}:{3*pow(sin(\t/2),9)});
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\draw (-3.500, 0) -- ( 6.000, 0.0);
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% Label:
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\draw[gray] (5,-1.8) node[]{Richtantenne};
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\draw[black] (-2.5,+1.8) node[]{Dipol};
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% Bemaßung
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\draw(-0.755,2.5) coordinate(s1);
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\draw(0,2.5) coordinate(e1);
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\DARCmeasure[gray][top]{s1}{e1}{0,0}{0}{$P_\text{R}$}
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\draw[ultra thin](start) -- (start|-0,0);
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\draw[ultra thin](end) -- (end|-0,0);
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\draw(-0.755,2.5) coordinate(s1);
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\draw(5.42,2.5) coordinate(e2);
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\DARCmeasure[gray]{e1}{e2}{0,0}{0}{$P_\text{V}$}
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\draw[ultra thin](end) -- (end|-0,0);
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\draw(0,-2.5) coordinate(s2);
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\draw(3,-2.5) coordinate(e3);
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\DARCmeasure{s2}{e3}{0,0}{0}{$P_\text{D}$}
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\draw[ultra thin](end) -- (end|-0,0);
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\draw(-3,-2.5) coordinate(e4);
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\DARCmeasure{e4}{s2}{0,0}{0}{$P_\mathrm{D}$}
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\draw[ultra thin](start) -- (start|-0,0);
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\draw[ultra thin](end) -- (end|-0,0);
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\end{tikzpicture} |