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Nexxim Simulator >
Nexxim Component Models >
Microstrip Elements >
Multi-Coupled Lines, Asymmetric

Multi-Coupled Lines, Asymmetric

Netlist Form

An asymmetric multiple coupled line, physical length instance has the following netlist syntax:

Axxx in1 [...inNL] out1 [...outNL]
NL=NumberofLines [P=length] [W=width] [SP=spacing]
COMPONENT=ms_mcpl_a SUBSTRATE=substrate_name

in1 through inNL are the names of the input nodes. out1 through outNL are the corresponding output nodes. The entry COMPONENT=ms_mcpl_a identifies the element as an asymmetric multiple coupled line, physical length.

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

**Asymmetric Multiple Coupled Line, Physical Length,**
**Instance Parameters**
Parameter	Description	Units	Default
NL	Number of signal lines	None	None
P	Physical length	Meter	1e-3
W1, W2, ...	Conductor widths	Meter	1e-3
S1, S2, ...	Spacing between conductors (S1 = spacing between 1 and 2, etc.)	Meter	1e-3

Netlist Example (3 Conductors)

A3 Port1 Port2 Port 3 Port 4 Port 5 Port 6 NL=3
+ P=15mm W1=0.75mm S1=0.4mm W2=1.3mm S2=0.6mm W3=1.1mm
+ COMPONENT=ms_mcpl_a SUBSTRATE=FR4

where FR4, the selected layout technology or substrate type, has a definition such as:

.SUB FR4 MS( H=7.6200e-004 Er=4.4 TAND=0.02 TANM=0
+ MSat=0 MRem=0 HU=0.00508 MET1=1.72413793103448
+ T1=1.7145e-005)

Notes

1. Surface roughness in the substrate definition is not supported in the MCPL implementation.

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