Go to www.awrcorp.com
Back to search page Click to download printable version of this guide.

(Obsolete) Coplanar Waveguide Substrate Definition: CPWSUB

Symbol

Summary

This element is OBSOLETE and is replaced by the Coplanar Waveguide Substrate Definition (CPW_SUB) element.

Parameters

Name Description Unit Type Default
Er Relative dielectric constant   0
H Substrate thickness Length 0 um
T Conductor thickness Length 0 um
Rho Metal bulk resistivity normalized to gold   1
Tand Loss tangent of dielectric   0
HC Cover height above substrate Length 0 um
Name Substrate name Text SUB1[1]

[1] Modify only if schematic contains multiple substrates. See “Using Elements With Model Blocks” for details.

Parameter Details

Er. The permittivity of the substrate material relative to freespace εo = 8.854*10-12 F/M.

Tand. The dielectric loss tangent of the substrate material: (Tand = εr"/εr' with εr 1/2 εr'- jεr")

Rho. Rho is the volume resistivity of the conductors relative to gold: 2.44 x 10 -8 Ω*m)

Physical volume resistivity = Rho * 2.44 x 10-8 Ω*m.

H, HC, and T are cross-sectional dimensional variables given in default length units.

In a schematic that contains coplanar waveguide elements, at least one instance of this element must exist.

Name. Provides a unique identifier for each instance of CPWSUB. The coplanar waveguide elements have a CPWSUB parameter that indicates which CPWSUB element to use.

Elements used with CPWSUB

OBSOLETE
CPWLIN
CPW1LIN
CPW2LIN
CPW3LIN

Layout

This element does not have an assigned layout cell. You can assign artwork cells to any element. See “Assigning Artwork Cells to Layout of Schematic Elements” for details.

Legal and Trademark Notice