What is the input signal-to-noise ratio in db

Assignment Help Electrical Engineering

Reference no: EM13257877

a) The input signal to an amplifier is -20 dBm. What is the input signal power in mW?

10 uW

0.01 mW

0.1 mW

100 mW

b) If the input noise power is 1uW, then what is the input noise power in dBm?"

-30 dBm

30 dBm

0 dBm

0.06 dBm

c) Given the input signal and noise power in parts (a) and (b), what is the input signal-to-noise ratio in dB?"

10 dB

-10 dB

-35.56 dB

35.56 dB

d) If the power gain of the amplifier is 115, then what is the power gain in dB?"

40.61 dB

47.45 dB

20.61 dB

94.90 dB

e) If the power gain of the amplifier is as given in part (d), then what is the output signal power in dBm?"

-29.39 dBm

27.45 dBm

0.61 dBm

74.90 dBm

f) If the amplifier contributes 0.01mW of noise power, then what is the output signal-to-noise ratio in dB?"

40 dB

9.64 dB

27.45 dB

0.61 dB

g) What is the noise factor of this amplifier?

1.04

1.05

1.09

1.08

h) What is the noise figure of this amplifier?

0.5 dB

0.36 dB

1.04 dB
1.1 dB

Reference no: EM13257877

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