McqMate
| Q. |
Gain of power amplifiers with increase in operating frequency. |
| A. | increases |
| B. | decreases |
| C. | increases exponentially |
| D. | decreases exponentially |
| 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. | |
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