Question

An amplifier under test has a gain of 25 dB. With an input signal level at f of -45 dBm, there are spurious outputs at f2 which are -80 dBm and spurious outputs at f3 which are-65 dBm. As the input level in increased to -40 dBm, the signal at f2 increases to -65 dBm, while the signal at f3 increases to-55 dBm. Identify the source of the signal at f2 or fs and use the information provided to estimate a performance parameter of the amplifier. The frequencies f, f2, and fs are not harmonically related. Extra credit for identifying both the signals at f2 and fs and estimating other performance parameters of the amplifier

Answer 1

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