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High-Frequency Amplifiers MCQs

Practice High-Frequency Amplifiers MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Analog ElectronicsHigh-Frequency Amplifiers

A cascode amplifier combines a common-emitter or common-source input device with a common-base or common-gate device mainly to obtain?

  • AHigh gain with improved high-frequency response
  • BZero input impedance
  • COnly unity voltage gain
  • DFull-wave rectification
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Correct Answer: A. High gain with improved high-frequency response
Explanation: The cascode suppresses large voltage variation at the input device's output node, reducing Miller effect while retaining useful gain.
Reference: Standard analog electronics: cascode amplifier