FEATURED NEWS AND INFORMATION:
FEATURED ARTICLES AND COLUMNS:

Quiet Power: Causal Power Plane Models

December 13, 2017 | Istvan Novak, Oracle

Causal and frequency-dependent models and simulations are important for today’s high-speed signal integrity simulations. But are causal models also necessary for power integrity simulations? When we do signal integrity eye diagram simulations, we define the source signals, so if we use the correct causal models for the passive channel, we will get the correct waveforms and eye reduction due to distortions on the main path and noise contributions from the coupling paths. Istvan Novak explains.

Who Really Owns the PCB Layout?

December 13, 2017 | Paul Taubman, Nine Dot Connects

In order to understand the current climate, we have to look at the division of labor that took place in electronic design about 40 years ago. The labor was divided into two processes, with the first being the design itself. This process was (and still is) owned by the electrical engineers. Though circuit design has changed, the methods for representing the circuit have not. Paul Taubman of Nine Dot Connects explains.



COLUMNS:

Quiet Power: Causal Power Plane Models

December 13, 2017 | Istvan Novak, Oracle

Causal and frequency-dependent models and simulations are important for today’s high-speed signal integrity simulations. But are causal models also necessary for power integrity simulations? When we do signal integrity eye...

The Pulse: Tangential Thoughts--Loss Tangent Values

December 6, 2017 | Martyn Gaudion, Polar Instruments

Numbers are fascinating things, and the way they are presented can influence our thinking far more than we would like to admit, with $15.99 seeming like a much better deal than $16. Likewise, a salary of $60,000 sounds better than one...

Beyond Design: When Do Traces Become Transmission Lines?

December 6, 2017 | Barry Olney, In-Circuit Design Pty. Ltd.

At low frequencies, traces and components on a PCB behave simply as lossless lumped elements—as taught in Circuit Theory 101. But as the frequency increases, the copper trace and adjacent dielectric(s) become a transmission...

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