Power Supply and Ground Design for a WiFi Transceiver - Tutorial - Maxim

Power Supply and Ground Design for a WiFi Transceiver - Tutorial - Maxim:

PLL Spurs

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GC-Prevue - Align Layers

GC-Prevue is my favorite Gerber Viewer.

To align layers select a pad or feature that exists on both layers.  Select all objects on the layer that is to be moved.  Place the cursor near a pad, press S (select) key to center on the pad then press the Z (zero) key.  Press space bar to move (unlock) crosshair.  On the other layer place the cursor near the same pad, select S key, then O (offset) key, then OK to align the layers.   

select edit mode (press e key) for the layer the is to be move


Thats it !

RLC Tweewers - Siborg Systems Inc.

Siborg Systems Inc.

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PCB Trace Voltage Drop Calculation

Get trace resistance from Saturn PCB Calculator - Conductor Properties

Calculate Trace Voltage Drop using Ohms Law

That's it !

Efficiently Using BGA Signal Routing - NexLogic Technologies

BGAs - NexLogic Technologies:

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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 !