Electronic Design

Phase-Noise Modeling, Simulation, and Propagation in Phase-Locked Loops (Part 2)

Some brief theory and typical measurements of phase noise. Standard analysis of PLL phase noise used by most CAD applications. How to produce the lowest phase noise at a PLL output. A standard design ...
EDN

Good behavioral model simulation: key to predicting first-order PLL synthesizer performance (Part 2 of 2)

The Agilent RFDE and ADS tools provide today's engineer with an accurate, well-defined methodology for predicting first-order phase noise performance of the PLL in the above example. The ...
Wired

Inside Heathrow's third runway noise simulator

In its mission to build a third runway, Heathrow is going high-tech. The UK's biggest and busiest airport is using innovative sound simulations to try and show the real impact of expansion on the ...
The Guardian

Heathrow sound simulator aims for a quiet take-off in central London

Arup SoundLab aims to win over opponents of third runway by simulating future noise levels. Gwyn Topham tests the noise Heathrow airport has a new hi-tech weapon in its battle to win over public ...