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Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
System Component Models >
Modulators >
   Phase Modulator (PMMOD)       

Phase Modulator (PMMOD)

 

 


Property

Description

Units

Default

Range

FC

Carrier frequency

Hz

100000

[0, Inf)/Real

P

Carrier power

Watt

0

[0, Inf)/Real

SEN

Phase deviation sensitivity, in rad per second per volt

Radian/Sec/Volt

1

[-1e6, 1e6]/Real

RIN

Input impedance

Ohm

Inf

(0, Inf]

ROUT

Output impedance

Ohm

0

[0, Inf)

Ports

Input

Input signal (complex)

Output

Output of phase modulator (complex)

 

Notes

1. This model performs phase modulation. The input to this model is assumed to be a baseband signal vin(t). The output is a phase modulated bandpass signal with carrier frequency FC and carrier power P. The output in-phase and quad-phase envelopes are given as follows, respec­tively
vout,i(t) = A · cos(q(t))
vout,q(t) = A · sin(q(t))
where
q(t) = SEN · vin(t)

and

A = SQRT(8 · ROUT · P) for FC < input sampling rate/2 (i.e., sampled carrier output)

or

A = SQRT(4 · ROUT · P) for FC > input sampling rate/2 (i.e., complex envelope output)

Netlist Form

PMMOD:Name n1 n2 FC=val P=val SEN=val [Rin=Val] [Rout=Val]

Netlist Example

PMMOD:1 1 2 FC=1MHz P=0.002W SEN=1.2



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