Q. Gain of power amplifiers with increase in operating frequency.

  • (A) increases
  • (B) decreases
  • (C) increases exponentially
  • (D) decreases exponentially
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✅ Correct Answer: (B) decreases
Explanation: silicon bipolar junction transistor amplifiers in the cellular telephone band of 800-900 mhz band have power added efficiencies of about 80%. but this efficiency drops quickly with increase in the operating frequency.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Sep-2023 07:26 am in Antennas and Microwave Engineering

Explanation by: Mr. Dubey
silicon bipolar junction transistor amplifiers in the cellular telephone band of 800-900 mhz band have power added efficiencies of about 80%. but this efficiency drops quickly with increase in the operating frequency.

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