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System Simulator >
System Component Models >
Miscellaneous >
Voltage Controlled Switch: Type 3 (SWITCH3)

Voltage Controlled Switch: Type 3 (SWITCH3)

Property	Description	Units	Default	Range/Type
VTHRESHOLD	Control voltage threshold	Volt	0.5	(-1e+020, 1e20)/Real
RIN1	Input1 impedance	Ohm	Inf	(0, Inf]/Real
RIN2	Input2 impedance	Ohm	Inf	(0, Inf]/Real
RIN3	Input3 impedance	Ohm	Inf	(0, Inf]/Real
ROUT	Output impedance	Ohm	0	[0, Inf)/Real
Ports
Input1	First input signal (complex)
Input2	Second input signal (complex)
Input3	Third input signal, control signal (complex)
Output	Output signal (complex)

Notes

1. This model performs voltage-controlled switching. The control voltage is represented by V3:

_V3 = V₃_I ^. cos(2pf_3ct) - V₃_Q^.sin (2pf_3ct)

Where, V₃_I+ jV₃_Q is the voltage complex envelope at the third input port, and f_3c is its carrier frequency. The carrier frequency f_4c and voltage complex envelope (V₄_I+ jV₄_Q) at output port are determined by

f_4c = f_1c, and (V₄_I + jV₄_Q)) = (V₁₁ + jV₁_Q) for the condition V3 > VTHRESHOLD, and

f_4c = f_2c,and (V₄_I + jV₄_Q) = (V₂_I+ jV₂_Q) elsewhere

where, f_1c, V₁_I+ jV₁_Q are the carrier frequency and voltage complex envelope at the first input port, and f_2c, V₂_I+ jV₂_Q are the carrier frequency and voltage complex envelope at the second input port.

Netlist Form

SWITCH3:Name n1 n2 n3 n4 [VTHRESHOLD=val] [Rin1=val][Rin2=val] [Rin3=val] [Rout=val]

Netlist Example

SWITCH3:1 1 2 3 4 VTHRESHOLD=1V

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