Scicos Block
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I/Q demodulator block

\epsfig{file=DEMODIQ_f.eps,height=90pt}

Contents

Palette

Description

This block realizes a complex demodulation in time domain and computes :

\begin{eqnarray}
y_{1}(t) = u_{1}\cos\left(\omega_{o}t\right)+u_{2}\sin\left(\omega_{o}t\right)
\end{eqnarray}



\begin{eqnarray}
y_{2}(t) = u_{2}\cos\left(\omega_{o}t\right)-u_{1}\sin\left(\omega_{o}t\right)
\end{eqnarray}


with u1, u2 are the regular inputs and y1,y2 the outputs. wo is the dialogue parameter "vector of frequencies". This is the pair block of the MODIQ_f block.

Basic blocks equivalent model

\epsfig{file=DEMODIQ_f_sbeq.eps,height=9cm}

Dialog box

\begin{figure}\begin{center}
\epsfig{file=DEMODIQ_f_gui.eps,width=300pt}
\end{center}\end{figure}

Default properties

Interfacing function

Computational function

See also

Authors

A. Layec