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Rectangular Inductor

Rectangular Inductor

Netlist Form

A regular inductor instance has the following netlist syntax:

Axxx n1 n2 LI=val AI=val BI=val N=val W=val S=val T=val
RB=val COE=val COMPONENT=msreci SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes connected to the inductor. The entry COMPONENT=msreci identifies the element as a regular inductor.

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.

**Rectangular Inductor Instance Parameters**
Parameter	Description	Units	Default
AI	Inner length parallel to LI	Meter	3e-3
BI	Inner length perpendicular to LI	Meter	3e-3
COE	Coefficient of contribution from crossovers	None	1.0
LI	Length of the innermost line	Meter	5e-3
N	Number of turns. Fractional turns are calculated based on the number of full turns	None	3
RB	Bulk resistivity	mOhm-cm	Defaults to substrate metallization
S	Spacing between conductors	Meter	1e-3
T	Conductor thickness	Meter	Defaults to substrate metallization
W	Conductor width	Meter	1e-3

Netlist Example

A23 Port1 Port2 LI=5e-3 AI=3e-3 BI=3e-3 N=3 W=0.001
+ S=1e-3 T=0.0 RB=0.0 COE=1
+ COMPONENT=msreci 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)

Notes

1. [All substrates] This model is not recommended for use beyond the first resonant point.

2. [All substrates] The inductor model is a partial representation of a physical inductor. Air bridges are required to connect the interior end of the inductor to the rest of the circuit. The air bridges must be modeled separately. See MS Air Bridge.

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