A New Technique for the Direct Measurement of Y-Parameters at Microwave Frequencies
A technique has been developed which makes practical the direct measurement of active device two-port y-parameters at microwave frequencies. The instrumentation involved is a simple modification of a conventional s-parameter test set, and the measurement procedure is only slightly more complicated than in a conventional s parameter measurement.
Microwave-transistor power-amplifier design by large-signal y parameters
The validity of large-signal y parameters for use in the design of microwave-transistor power amplifiers has been investigated, and simple design equations have been derived for the optimum source and load terminations. The predicted terminations are in good agreement with those experimentally obtained with a 1 GHz 1 W amplifier.
Mean field model of a game for power
Abstract Our aim is to model a game for power (equivalent to total energy) as a dynamical process, where an excess of power possessed by a player allows him to gain even more power. Such a positive feedback is often termed as the Matthew effect. Analytical and numerical methods allow to identify a set of stationary states, i.e. fixed points of the model dynamics. The positions of the unstable fixed points give an insight on the basins of attraction of the stable fixed points. The results are interpreted in terms of modeling of coercive power.