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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Stripline Elements >
   Gap, Symmetric       

Gap, Symmetric

 

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Netlist Format

A symmetric gap instance has the following netlist syntax:

Axxx n1 n2 W=val G=val COMPONENT=symmetric_gap SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the symmetric gap. The entry COMPONENT=symmetric_gap identifies the element as a symmetric gap.

The entry SUBSTRATE=substrate_name identifies the Stripline substrate model name selected for the design (see Selecting a Stripline Substrate). See the Stripline (SL) Substrate for information on this substrate type.

 


Symmetric Gap Instance Parameters

Parameter

Description

Units

Default

W

Line width

Meter

1e-3

G

Gap spacing

Meter

1e-4

Netlist Example

A23 Port1 Port2 W=5e-3 G=3e-4
+ COMPONENT=symmetric_gap SUBSTRATE=SL1

where SL1, the selected layout technology or substrate type, has a definition such as:

.SUB SL1 SL( B=0.001524 Er=4.40000000000000
+ TAND=0.0200000000000000 MET1=1.72413793103448
+ T1=1.7145e-005 RGH=0mil)

Notes

1. [Stripline] The substrate definition should satisfy the following conditions:
G/B £ 100,
B/lg < 1.0 , where B is the distance between the ground planes and lg is the guide wavelength.

 

 



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