1. Draw the frequency spectrum at the output of the first balanced modulator.
2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier.
3. Draw the frequency spectrum at the output of the second balanced modulator.
4. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and linear power amplifier.
5. Find the value for the required Q for the first filter.
6. Find the value for the required Q for the second filter.