Final answer:
The question pertains to the design of a cascode amplifier with specific gain and bandwidth requirements in an engineering context. Strategies to achieve the extended bandwidth involve circuit optimization techniques.
Step-by-step explanation:
The cascode amplifier is a two-stage amplifier that consists of a common-emitter stage feeding into a common-base stage. It is widely used in applications requiring high gain and extended bandwidth. In designing a cascode amplifier with a β (beta) of 200, a supply voltage of +12 V and -12 V, and an AC voltage gain of 110 (~40 dB), careful consideration must be given to the device parameters and circuit topology to achieve the desired gain while also extending the bandwidth.
To extend the bandwidth by at least one decade, strategies such as using bypass capacitors to reduce the effect of internal capacitances, employing neutralization techniques, or optimizing the load and source impedances can be utilized. As it is a more complex subject, such design often involves iterative simulation and optimization to meet the specific bandwidth and gain requirements.