Gain Bandwidth Product

Using several lower gain stages in cascade is a strategy that also works. And, a very direct and effective solution is a common base configuration, in which the input signal drives the emitter, and the base is grounded, which has the effect of breaking the collector/base feedback path.

Frequency dependent feedback in the figure, the capacitor, Ce, across the emitter resistor, Re, causes the gain of this device to be greater at higher frequencies. As capacitive reactance, Xc, approaches the value of Re, a rapid increase in gain occurs. The effect, of course, is to reduce the negative feedback at higher frequencies. This is often done to compensate for the limited bandwidth of the transistor stage.

Common Base Stage

Because the base is "grounded", this configuration does not suffer from the Miller Effect, thus yielding the widest bandwidth of all configurations.

Note that the drive is to the Emitter, and there is no signal inversion.