During the last decades, linear system theory has ruled engineering applications. Almost all engineers are raised in the linear framework and a lot of techniques are available to measure and to model linear devices. Almost everything that is not linear or cannot be linearised is treated as a perturbation that has to be eliminated. However, the constant pressure of low-power and high-bandwidth applications pushes an increasing number of devices beyond the edges of their linear range into a nonlinear operation region. Think of example of an exigent customer who wants an optimal working, cheap-priced mobile phone with a large autonomy. Most of these demands can be granted by increasing the efficiency of the transistors. The problem, however, is that increasing the efficiency of a transistor means pushing its operating point closer to the compression region. Since compression is synonymous for nonlinearity, acquiring insight in the nonlinear behaviour of a component becomes essential. By better integrating oneself in the nonlinear world, it becomes hence easier to model the nonlinear behaviour of telecommunication building blocks, i.e. the RFIC's.
|Number of pages||16|
|Journal||IEEE Microwave Magazine|
|Issue number||IEEE Microwave Magazine|
|Publication status||Published - 14 Nov 2006|
Bibliographical noteMike Golio
- Nonlinear network Analyzer