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% vim:set ts=2 sw=2 noet:
\begin{tikzpicture}[
antenna/.pic = {
\draw[very thick] (0,0) -- ++(2mm, 3mm) -- ++(-4mm,0) -- cycle;
\draw[very thick] (0,0) -- ++(0,-5mm) coordinate (-mast) {};
\draw[thick] (0,0) -- ++(0,3mm);
\node[inner sep = 0pt, outer sep = 6pt] (-center) at (0,2mm) {};
},
]
\coordinate (X) at (-3.5,3);
% antennas
\draw (X) pic (T) {antenna} node[above = 3mm] {\sffamily\bfseries TX};
% rays
\foreach \i [count=\j] in {-2.2,-0.3,1.3,2.7,5.3,7.1,8.3}{
\draw[blue!20, line width = 1mm]
(T-center) -- ({30 * \i}:25mm) coordinate (p\j) -- (0,0);
};
% angle
\draw[dashed, thick] (25mm, 0) node[right] {0}
-- (0,0) -- (p3) node[above right] {\(\vartheta_k \sim \mathcal{U}(0,2\pi)\)};
% LOS
\draw[line width = 1mm, red!50,
decorate, decoration = {
expanding waves, angle = 5, segment length = 2mm
}
] (T-center) -- (-5mm, 5mm);
% ring und RX antenna
\draw (0,0) pic (R) {antenna} node[above = 3mm] {\sffamily\bfseries RX};
\draw[thick, densely dotted] circle (25mm);
\end{tikzpicture}
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