More Spurious Signals Running a test, a design engineer applies two signals to an amplifier. The frequencies of the two signals are in the neighborhood of 500 MHz. The engineer observes five equally...

More Spurious Signals Running a test, a design engineer applies two signals to an amplifier. The frequencies of the two signals are in the neighborhood of 500 MHz. The engineer observes five equally spaced signals at the output of the amplifier. The highest frequency observed is 2,040 MHz. The lowest frequency observed is 1,960 MHz. Figure 7-53 shows the input and output spectra.

a. What are the two input and five output frequencies?

b. What is the equation that generates each spurious signal (e.g., 4 f1, 3 f1 − f2)?

c. What is the highest possible order of the equation that produced this result?