Altera AppNote AN672 was recently updated. This app note is perfect for anyone who is on the high speed learning curve.
'via Blog this'
Wednesday, February 22, 2017
Sunday, February 19, 2017
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 !
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 !
Monday, February 13, 2017
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:
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:
