Page tree
Skip to end of metadata
Go to start of metadata



SPDT_Static (Single Pole Double Throw Switch, Static)

Symbol

Available in ADS and RFDE

Parameters

Name

Description

Units

Default

State

State of switch: 0=off; 1=on

None

1

F1

First frequency breakpoint

 

F2

Second frequency breakpoint

 

F3

Third frequency breakpoint

 

Loss1

Attenuation for frequencies ≤ F1

dB

0

Loss2

Attenuation for F1< frequency ≤ F2

dB

0

Loss3

Attenuation for F2 > frequency ≤ F3

dB

0

VSWR1

Voltage standing wave ratio at both ports for frequencies ≤ F1

None

1

VSWR2

Voltage standing wave ratio at both ports for frequencies > F1, ≤ F2

None

1

VSWR3

Voltage standing wave ratio at both ports for frequencies > F2, ≤ F3

None

1

Isolat

Isolation

dB

100

ZRef

reference impedance for all ports

Ohm

50

Temp

temperature

°C

None

CheckPassivity

check passivity flag: if set to yes, a passivity check is performed and a warning is output if the device is not passive; if set to no, a passivity check is not performed.

None

yes

Notes/Equations
  1. This model is based on S-parameters (S12 = S21, S13 = S31).
  2. Up to three frequency break points can be used to define four bands, with different losses and VSWR for each frequency band.
    Enter loss as a positive attenuation. In other words, a 0.5 dB loss is entered as Loss = 0.5, not Loss = −0.5.
  3. Isolation is assumed to be constant across all frequency bands.
    When using this device in a transient simulation, the switch setting must be constant.
  • No labels