Performance Enhancement by the In Ga As Pseudomorphic Channel on the In Al As Metamorphic Buffer Layer

A new method to determine the isothermal dc and ac characteristics has been presented. This method can be used with standard measurement equipment. The method has been applied to a state of the art HBT technology. It hasbeen validated by comparing the pulsed measurement method to this new method on a 0.35- m AMS technology. Applying this method to measured data confirms, that isothermal data are useful for parameter extraction for transit time and Kirk effect-related parameters.

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