An analytic formulation of dynamic electro-thermally induced nonlinearity is developed for a general resistive element, yielding a self-heating circuit model based on a fractional derivative. The model explains the 10 dB/decade slope of the intermodulation products observed in two-tone testing. Two-tone testing at 400 MHz of attenuators, microwave chip terminations, and coaxial terminations is reported with tone spacing ranging from 1 to 100 Hz.
|Number of pages||9|
|Journal||IEEE Transactions on Microwave Theory and Techniques|
|Publication status||Published - Dec 2008|
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics