\begin{texdraw}
\drawdim cm

% abcisas
\move(-2.5 0)
\avec(1 0)
\rmove(0 -0.2)
\textref h:C v:T \htext{$\sigma$}

% ordenadas
\move(0 -2.1)
\avec(0 2.5)
\rmove(-0.2 0)
\textref h:R v:C \htext{$j\omega$}

%%
%% POLOS pi/4
%%
\move (-1.414 1.414)
\textref h:C v:C \htext{x}
\move (-1.414 -1.414)
\textref h:C v:C \htext{x}
\move (-1.5 1.414)
\textref h:R v:B \htext{$Q=\sqrt{2}/2$}

%%
%% POLOS pi/2
%%
\move (0 -2)
\textref h:C v:C \htext{x}
\move (0 2)
\textref h:C v:C \htext{x}
\move (0.2 2)
\textref h:L v:C \htext{$Q=\infty$}

%%
%% POLOS 0
%%
\move (-2 0)
\textref h:C v:C \htext{x}
\move (-2 0)
\textref h:C v:C \htext{+}
\move (-1.8 -0.1)
\textref h:L v:T \htext{$Q=0$}

%%
%% Vector omega
%%
\move (0 0)
\avec (-1.414 1.414)
\move (-0.6 0.707)
\textref h:L v:B \htext{$\omega_0$}


% circunferencia para los polos
\lpatt(0.1)
\move (0 0)
\larc r:2 sd:90 ed:270

\end{texdraw}