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   MIM Circular Capacitor, Q Specified       

MIM Circular Capacitor, Q Specified

 

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Netlist Form

Axxxx n1 n2 W1=val W2=val L=val R=val T=val
ER=val Q=val COMPONENT=msmimrq SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the capacitor. The entry COMPONENT=msmimrq identifies the element as a MIM circular capacitor, Q specified, 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.

 


MIM Circular Capacitor, Q Specified Instance Parameters

Parameter

Description

Unit

Default

W1

Width of MS feeder line

Meter

1e-3

W2

Width of bottom plate

Meter

1e-3

L

Length of bottom plate

Meter

1e-3

R

Radius of upper plate

Meter

1e-3

T

Dielectric thin film thickness

Meter

1e-4

ER

Dielectric constant of thin film

None

1.0

Q

Quality factorof the thin film

None

1e20


 

Netlist Example

A23 Port1 Port2 W1=0.5e-3 W2=0.5e-3 L=1.1e-3 R=0.8e-3
+ T=0.0001 ER=1.4 Q=1e20 COMPONENT=msmimrq 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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