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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Grounded Coplanar Waveguide Elements >
   Tee       

Tee

 

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Netlist Format

An instance of a grounded coplanar waveguide tee has the following netlist syntax:

Axxx n1 n2 n3 n4 [W1=val] [W3=val][Y=val] COMPONENT=gcpwtee SUBSTRATE=substrate_name

n1, n2, n3, and n4 are the names of the nodes attached to the cross.

The entry COMPONENT=gcpwtee identifies the element as a grounded coplanar waveguide tee element.

The SUBSTRATE=substrate_name is the grounded coplanar waveguide substrate model name selected for the design (see Selecting a Grounded Coplanar Waveguide Substrate for details).

 


Grounded Coplanar Waveguide Tee Instance Parameters

Parameter

Description

Units

Default

Y

Ground-to-ground spacing at all ports. Must be greater than W1, W2, and W3.

Meter

4e-3

W1

Conductor width at port 1

Meter

1e-3

W2

Conductor width at port 2

Meter

1e-3

W3

Conductor width at port 3

Meter

1e-3

Netlist Example

A23 Port1 Port2 Port3 W1=4.0e-4 W2=3.0e-4 W3=2.0e-4 Y=6.0e-4
+ COMPONENT=GCPWTEE SUBSTRATE=GCPW1

where GCPW1, the selected layout technology or substrate type, has a definition such as:

.SUB GCPW1 GCPW(
+ H=0.001524 Er=4.4 TAND=0.02 HU=2.54E-4
+ MET1=1.724137931034483 T1=2.54e-5 RGH=0)

Notes

1. The lines connected to nodes n1 and n2 are collinear, with conductor widths W1 and W2. The perpendicular line is connected to node n3 and has center conductor width W3. The ground-to-ground distance Y is the same for all ports.

2. For accurate results, the substrate definition should specify:
H > Y
0.1 < Wn/Y <0.9, where Wn is the conductor width at any port.

3. The coplanar mode is assumed to exist only. Parasitic effects due to air bridges are not considered by this model.



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