Cascode configuration is known to have both high gain and wide bandwidth. One of the problems in undergraduate electronic courses and laboratories is that when the students simulate or implement cascode amplifiers, the resulting gain-bandwidth products do not always correspond with and are lower than the values given in textbooks. In these situations, when the high-frequency response of the amplifier is evaluated using the practical values of elements in the high-frequency models of active devices, it is seen that theoretical values correspond to the results of simulations and experiments. Thus, it is deduced that this configuration might not be added to our repertoire of amplifiers with high gain-bandwidth product.
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