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Best linearized models for RF systems

Friday, 8 October, 2010 - 17:00
Campus: Brussels Humanities, Sciences & Engineering campus
Koen Vandermot
phd defence

Mathematical models are gaining importance in our every days life. In telecommunications,
they are an enabling technology for the large and simultaneous increase of data bandwidths
and battery life. This demanding requirements call for a whole new class of models that
describe systems and components operating under extreme conditions. Often, these
techniques remain hidden for the end user, as their main role lies in the operation and the
design of the portable devices.

Up to now, these mathematical representations are extracted in a dual way: either the behavior
of the device is over-simplified (mathematically the model is then called linear) and the
accuracy of the model is inadequate, or a full physics-based model is used (mathematically
the model is then non-linear). The latter alternative results in extremely accurate models, but
is often practically intractable as it comes at the cost of a very high complexity and is resource

In this thesis, we tried to combine the best of both worlds: provide models that have an
acceptable level of accuracy, but remain easy to understand, to interpret and above all remain
resource friendly. This new method opens the way for a whole new generation of enabling
design tools for the manufacturing of tomorrows feature-rich portable telecom equipment.