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1. |
An X- band amplifier has a gain of 20 dB and a gain of 1GHz bandwidth. Noise figure of the amplifier is -62 dBm at 290 K and -64.7 dBm at 77 K. then the Y factor of the amplifier is : |
A. | 3 dB |
B. | 6.4 dB |
C. | 2.7 dB |
D. | 5.6 dB |
Answer» D. 5.6 dB | |