36 lines
1.5 KiB
TeX
36 lines
1.5 KiB
TeX
% Author: Malte, DE7LMS
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% Modifier: Dr. Matthias Jung, DL9MJ
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% Year: 2022
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% TH138 λ/4 ground plane
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\begin{circuitikz}
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% Corpus:
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\draw (.2,1.4) coordinate(feed right)
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arc[start angle=0, end angle=180, x radius=.2, y radius=.1]
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coordinate(feed left)
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arc[start angle=180, end angle=360, x radius=.2, y radius=.1];
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\draw(feed right) -- ++(0,-2) coordinate(c1);
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\draw(feed left) -- ++(0,-2) coordinate(c2);
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\draw (c1)
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arc[start angle=0, end angle=-90, x radius=.2, y radius=.1] coordinate (bottom)
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arc[start angle=-90, end angle=-180, x radius=.2, y radius=.1];
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\draw (bottom) -- ++(0,-.2);
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\draw[dashed] (bottom) -- ++(0,2);
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% Radials:
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\path (.2,1.4)
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arc[start angle=0, end angle=45, x radius=.2, y radius=.1] coordinate (up right)
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arc[start angle=45, end angle=135, x radius=.2, y radius=.1] coordinate (up left)
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arc[start angle=135, end angle=225, x radius=.2, y radius=.1] coordinate (down left)
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arc[start angle=225, end angle=315, x radius=.2, y radius=.1] coordinate (down right);
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\path (down right) ++(2,-1) coordinate (down right end);
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\path[very thick, shorten <=-1pt, {Circle[length=2pt]}-, line cap=round]
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(up right) edge +(2,1)
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(up left) edge +(-2,1)
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(down right) edge (down right end)
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(down left) edge +(-2,-1);
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% Antenne:
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\draw (feed left) to [open, name={m1}] (feed right);
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\draw[very thick] (m1.center) -- ++(0,3);
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\end{circuitikz} |