V_sffm - MapleSim Help
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V_sffm

Single-frequency FM voltage source

Description

The V_sffm component models a source consisting of a carrier signal of frequency ${F}_{C}$ frequency-modulated by a sinusuoid of frequency ${F}_{S}$.

 • All parameters of sources should be set explicitly.
 • Since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.
 Equations $i={i}_{p}=-{i}_{n}$ $v={v}_{p}-{v}_{n}={V}_{\mathrm{O}}+{V}_{A}\mathrm{sin}\left(2\mathrm{\pi }{F}_{C}t+\mathrm{MDI}\mathrm{sin}\left(2\mathrm{\pi }{F}_{S}t\right)\right)$

Variables

 Name Units Description Modelica ID $v$ $V$ Voltage drop between the two pins $\left({v}_{p}-{v}_{n}\right)$ v $i$ $A$ Current flowing from pin p to pin n i

Connections

 Name Description Modelica ID $p$ Positive pin p $n$ Negative pin n

Parameters

 Name Default Units Description Modelica ID ${V}_{\mathrm{O}}$ $0$ $V$ Offset VO ${V}_{A}$ $0$ $V$ Amplitude VA ${F}_{C}$ $\mathrm{Hz}$ Carrier frequency FC $\mathrm{MDI}$ $0$ Modulation index MDI ${F}_{S}$ $\mathrm{FC}$ $\mathrm{Hz}$ Signal frequency FS

 Modelica Standard Library The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.