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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Independent Sources >
Voltage Source, AM (Netlist Only)

Voltage Source, AM (Netlist Only)

AM Voltage Source Netlist Format

The netlist format for amplitude-modulated, time-varying (AM) voltage source is:

Vxxxx n+ n- AM (sa oc fm fc [td])

n+ is the positive node and n- is the negative node of the voltage source. Parameters in parentheses are positional. The first four parameters must be present in the order given.

Note

The AM voltage source is available for use in netlists, but is not supported in the Components window of the Designer Schematic Editor.

**AM Voltage Source Parameters**
Parameter	Description	Unit	Default
sa	Signal amplitude	Volt	0.0
oc	Offset constant applied to the modulation amplitude	None	0.0
fm	Modulation frequency	Hertz	1/TSTOP
fc	Carrier frequency	Hertz	0.0
td	Propagation delay before the start of the signal	Second	0.0

AM Voltage Source Netlist Example

* AM Voltage Source netlist example
* To visualize the interaction of sa (signal amplitude)
* and oc (offset constant)
* swap the next two lines by moving the comment mark (*),
* analyze, create reports

* V1 1 0 AM (80 0 5e6 1e9 0)

V1 1 0 AM (20 4 5e6 1e9 0)

R1 1 0 1

.TRAN 1e-10 1e-6

.PRINT tran V(1)

.END

Notes

1. The AM voltage source output is calculated as follows:

output = sa ´ {oc + sin[2p ´ fm ´ (time - td)]} ´ sin[2p ´ fc ´ (time - td)]

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