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   Transmission Line, Physical Length with Reference       

Transmission Line, Physical Length with Reference


 

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Netlist Format

An instance of a coplanar waveguide transmission line, physical length with reference has the following netlist syntax:

Axxx n1 n2 n3 n4 [W=val] [G=val]
COMPONENT=cpwtrl SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the transmission line. n3 and n4 are the reference nodes. The entry COMPONENT=cpwtrl identifies the element as a coplanar waveguide transmission line, physical length.

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

 


Coplanar Waveguide Transmission Line, Physical Length with Reference Instance Parameters

Parameter

Description

Units

Default

W

Width of center conductor

Meter

1.0e-3

G

Slot gap width

Meter

1.0e-3

P

Physical length

Meter

1.0e-2

Netlist Example

A5 Port1 Port2 Port3 Port4 W=0.75e-3 G=1.1e-3 P=2e-2 COMPONENT=cpwtrl SUBSTRATE=CPW1

where CPW1, the selected layout technology or substrate type, has a definition such as:

.SUB CPW1 CPW(
+ H=0.001524 Er=4.4 TAND=0.02 HU=2.54E-4 HL=2.54e-4
+ MET1=1.724137931034483 T1=2.54e-5 RGH=0)

 



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