Transceiver Link Design Guidelines for High-Gbps Data Rate Transmission - Altera

Altera AppNote AN672 was recently updated. This app note is perfect for anyone who is on the high speed learning curve.

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How to 'Exclude' parts in HyperLynx | Mentor Graphics Communities

How to 'Exclude' parts in HyperLynx | Mentor Graphics Communities:

An unanswered question.

There are resistors in this design that can be fitted or not fitted to determine the signal paths. 

To accurately simulate this design Hyperlynx would need to analyze the signal path and stub lengths based on which parts are installed and not fitted.

click on image to view

The question is how would you remove the stubs and paths from within Hyperlynx to simulate the design as though the parts were not fitted (removing the stub paths).

Comments welcome and appreciated !

Via fence - Thumb Rules

Thumb rules:

Stitching Vias for RF should be spaced at lamba/20, where lamba equals the wavelength of the highest frequency of interest.

For striplines, "a rule of thumb is to place the fences at least four times the trace to ground plane distance away from the line being guarded"

Source: Via fence - Wikipedia:

Great Scott Gadgets - Home

Great Scott Gadgets - Home:

RF Projects

Michael Ossmann: Simple RF Circuit Design

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TIP #025: Try to use as big gap / clearance between signals as possible - YouTube

Source: Robert Feranec

TIP #025: Try to use as big gap / clearance between signals as possible - YouTube:


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