Note: This page has been translated by MathWorks. Please click here

To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

Model DC offset and sinusoidal modulation

**Library:**RF Blockset / Circuit Envelope / Sources

The Sinusoid block implements a voltage or current source that provides a DC offset and sine wave modulation. This block can be used with each listed block carrier in the circuit envelope environment.

The block implements the following voltage (or current) relationships
for the in-phase (*u _{i}*), and
quadrature (

$$\begin{array}{l}{u}_{k,i}(t)={D}_{i}+{A}_{i}\mathrm{sin}({w}_{k}(t-\tau ))\\ {u}_{k,q}(t)={D}_{q}+{A}_{q}\mathrm{sin}({w}_{k}(t-\tau ))\end{array}$$

*D*and_{i}*D*are DC offsets._{q}*A*and_{i}*A*are in-phase and quadrature amplitudes._{q}*τ*is the time delay.*ω*is the specified modulation frequency at a given carrier frequency_{k}*f*._{k}*t*is the time.

Was this topic helpful?