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   Thin Film Capacitor, Physical, T/Q       

Thin Film Capacitor, Physical, T/Q

 

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Netlist Form

Axxxx n1 n2 L=val W=val T=val ERF=val Q=val
COMPONENT=mstfc SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the thin-film capacitor. The entry COMPONENT=mstfc identifies the element as a thin-film capacitor, physical T/Q model, microstrip substrate. 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.

 


Physical Thin-Film Capacitor, T/Q Model Instance Parameters

Parameter

Description

Unit

Default

L

Length of capacitor, assuming rectangular plate

Meter

1e-3

W

Width of capacitor, assuming rectangular plate

Meter

1e-3

T

Dielectric film thickness

Meter

1e-3

ERF

Dielectric constant of film

None

1.0

Q

Quality factor of the thin film

None

1e20

 

Netlist Example

A23 Port1 Port2 L=1e-3 W=0.001 T=0.0001 ERF=1.0 Q=1e20
+ COMPONENT=mstfc 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 RGH=0mil)



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