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Nexxim Simulator >
Nexxim Component Models >
Grounded Coplanar Waveguide Elements >
Unmitered Bend, Distance Between Ground Planes

Unmitered Bend, Distance Between Ground Planes

Netlist Format

An instance of a grounded coplanar waveguide unmitered bend, ground plane distance, has the following netlist syntax:

Axxx n1 n2 [W=val] [Y=val]
COMPONENT=gcpw_bend_ground_plane_distance SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the bend. The entry COMPONENT=gcpw_bend_ground_plane_distance identifies the element as a grounded coplanar waveguide unmitered bend, ground plane distance specified.

The SUBSTRATE=substrate_name is the coplanar waveguide substrate model name selected for the design (see Selecting a Coplanar Waveguide Substrate for details).

**Grounded Coplanar Waveguide Unmitered Bend, Ground Plane Distance Instance Parameters**
Parameter	Description	Units	Default
W	Center conductor width	Meter	1.0e-3
Y	Distance between ground planes	Meter	3.0e-3

Netlist Example

A5 Port1 Port2 W=0.75e-3 Y=2.1e-3
+ COMPONENT=cpw_bend_ground_plane_distance SUBSTRATE=GCPW1

where GCPW1, the selected layout technology or substrate type, has a definition such as:

.SUB GCPW1 GCPW(
+ H=0.001524 Er=4.4 TAND=0.02 HU=2.54E-4
+ MET1=1.724137931034483 T1=2.54e-5 RGH=0)

Notes

1. Reference planes coincide with the inside vertex of the corner, as shown in the figure.

2. For accurate results, the substrate definition should specify:
H > Y
0.1 < W/Y < 0.9

3. The coplanar mode is assumed to exist only. The CPW Air Bridge can be used if parasitic effects due to air bridges are to be considered.

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