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   Directional Coupler, Three Port (COUPLER3)       

Directional Coupler, Three Port (COUPLER3)

 

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Properties

Description

Units

Default

Range

ZREF

Reference Impedance

Ohm

50

(0,INF)

COUP

Coupling factor, in dB

dB

20

(0,INF)

LOSS

Attenuation, in dB

dB

3

[0,INF)

DIRECTIVITY

Directivity, in dB

dB

100

[0,INF)

VSWR1

Voltage standing wave ratio at port 1

dB

1

[1,INF)

VSWR2

Voltage standing wave ratio at port 2

dB

1

[1,INF)

VSWR3

Voltage standing wave ratio at port 3

dB

1

[1,INF)

 

Notes

1. 20 log |S21| = 20 log |S12| = - LOSS

2. 20 log |S23| = 20 log |S32| = DIRECTIVITY

3. 20 log |S31| = 20 log |S13| = - COUP

4. |S11| = (VSWR1 - 1)/(VSWR1 + 1)

5. |S22| = (VSWR2 - 1)/(VSWR2 + 1)

6. |S33| = (VSWR3 - 1)/(VSWR3 + 1)

7. The phases of all the S-parameters are zero.

8. All the parameters are assumed to be constant. If not, the frequency and/or temperature depen­dent S-parameters, ABCD-parameters, Z-parameters or Y-parameters should be measured /calculated, stored in an external file, and referred from the element’s property window. For more information see the Data Format chapter of this manual.

Netlist Form

COUPLER3:NAME n1 n2 n3 [COUP=val] [DIRE=val] [LOSS=val] [VSWR1=val] [VSWR2=val] [VSWR3=val]

Netlist Example

COUPLER3:1 1 2 3 COUP=3 DIRE=25

References



HFSS视频教学培训教程 ADS2011视频培训教程 CST微波工作室教程 Ansoft Designer 教程

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