AIRCOIL3 models an air core coil inductor with opposed leads. Coil and lead dimensions are configurable.
This element is for use in 3D EM documents only. See “Using 3D EM Elements ” for details on using 3D pCells with Cadence® AWR® Analyst™ 3D FEM EM analysis software.
See “Air Coil With Centered Axial Leads: AIRCOIL1” for similar topology details.
|*M||Multiplicity factor - not used for this model||1|
|NTurns||Number of turns||4|
|WireDia||Diameter of the wire||Length||1 mm|
|CoilDia||Coil inner diameter||Length||3.5 mm|
|Pitch||Distance between turns, measured from wire center-to-center||Length||1.01 mm|
|LeadLen||Length of lead||Length||1.5 mm|
|LeadOff||Offset distance between coil body and beginning of lead||Length||1.5 mm|
|LeadType||Type of lead contact: 0=round post, 1=bottom flat tab, 2=lofted flat tab||0|
|TabLenRatio||Ratio of tab length to total lead length for LeadType=1 or 2. 0<TabLenRatio<1||0.75|
|Rho||Bulk resistivity of conductor metal normalized to gold||1|
* indicates a secondary parameter
Parameters for this model are unitless. Parameters do not scale when changing Global Units.
The lead geometry is configurable. The simplest lead, LeadType=0, is a round post. Next, LeadType=1 is a lead with a bottom flat tab. The length of the flat bottom section is (LeadLen·TabLenRatio), and the length of the round section is (LeadLen·(1-TabLenRatio)). Lastly, LeadType=2 is a lead with flat bottom that gradually transitions to a round cross-section. The length of the flat bottom section is (LeadLen·TabLenRatio), and the length of the lofted (transition) section is (LeadLen·(1-TabLenRatio)).
LeadOff. LeadOff is the offset distance between the coil body and lead. The cross-section of this region is always round. This length typically represents the length of the gap between body of the coil, and the end of the trace which the coil is attached to.
Rho. Rho is the bulk resistivity of conductor metal normalized to gold, where Rho_Gold=2.44 x 10-8 Ω*m. So actual bulk resistivity of conductor metal is (Rho·2.44 x 10-8) Ω*m.
This element has a layout cell specifically for Analyst 3D EM layouts. See “Using 3D EM Elements ” for details on using 3D pCells with Analyst.