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Nexxim Simulator >
Nexxim Component Models >
Stripline Elements >
Via Through Hole with Reference

Via Through Hole with Reference

Netlist Format

A via hole instance has the following netlist format:

Axxx n1 n2 [D=val] [DG=val] COMPONENT=viahole SUBSTRATE=substrate_name

n1 and n2 are the names of the node attached to the via through hole. The entry COMPONENT=viahole identifies the element as a via through hole.

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.

**Via Through Hole Instance Parameters**
Parameter	Description	Unit	Default
D	Diameter of upper via hole	Meter	1e-3
DG	Diameter of lower via hole	Meter	D

Netlist Example

A21 Port1 net_31 D=0.001 COMPONENT=viahole 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. [All substrates] If metallization is not specified in the referenced substrate definition, the via element behaves as an inductance only.

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