Using the CGen GGB SET2DIL probe in-line coupon style
Application Note AP531
Specifying the standard and in-line coupon styles for the GGB SET2DIL Picoprobe
The Polar CGen Coupon Generator includes coupon layout styles that accommodate the GGB SET2DIL Picoprobe
This note describes the procedure for using the GGB SET2DIL Picoprobe in-line coupon layout
Start CGen and from the File menu choose New Coupon; specify 8 layers, ensure Symmetry is checked and assign Layers 2 and 4 as plane layers – CGen constructs the coupon as shown below.
Right click Layer 1 and choose the differential structure Edge Coupled Surface Microstrip; click Add to add the structure to the Layer 1; repeat to add three structures to Layer 1.
Close the dialog – the three structures are added to the Structures list.
From the Styles dropdown choose Style GGB SET2DIL:
From the Tools menu select Coupon Properties:
The Coupon Properties dialog allows the dimensional parameters to be set for each coupon style – choose the GGB SET2DIL tab; note the Mode In-line check box.
Note that a single Thru trace serves as reference trace for all three test traces:
The graphic below shows the Thru and first test trace in detail.
If space is not at a premium uncheck Mode In-Line – reference and test traces will be arranged side by side.
CGen Si operates as both a standalone insertion loss or controlled impedance coupon generator. CGen Si works especially well in conjunction with Speedstack Si professional layer stackup design and documentation system.
CGen PCB is a lower cost version of CGen with support for lossless controlled impedance coupons only. CGen PCB also stands alone, but works best with Speedstack PCB.