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Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
System Component Models >
Sources >
   Additive White Gaussian Noise Source, Real (AWGNS)       

Additive White Gaussian Noise Source, Real (AWGNS)

 

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Property

Description

Units

Default

Range/Type

NSAMP

Number of samples

None

100

[1, Inf)/Integer

Seed

Random Seed

None

0

[0, Inf)/Integer

Noise_Power

Noise power

Watt

1

[0, Inf)/Real

Sample_Rate

Output bit rate in Hz

Hz

1000

(0, Inf)/Integer

FC

Carrier frequency in Hz

Hz

0

[0, Inf)/Real

ROUT

Output impedance

Ohm

50

[0, Inf)/Real

Ports

Output

Output signal (real)

Notes

This model generates a real additive white Gaussian noise signal. The output voltage is given by

 

[spacer]

 

 

Where A(t) is a random white Gaussian processes with a standard deviation given by

 

[spacer]

for envelope analysis

 

or

 

[spacer]

for instantaneous analysis

 

Netlist Form

AWGNS:Name n1 NSAMP=val [SEED=val] Noise_Power=val
+ Sample_Rate=val [FC=val] [ROUT=val]

Netlist Example

AWGNS:1 1 nsamp=1024 seed=10 Noise_Power=10dbm
+ Sample_Rate=200KHz

 



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