The disadvantages of DDS include the limit on maximum output frequency and higher ___________.
A. cost
B. output waveforms
C. phase noise
D. analog units
Question 2
Why are virtually all oscillators used in communications applications the feedback type?
A. They are capable of producing highly pure sine waves.
B. The currents in the diodes and the currents in the transistors are the same.
C. They use RC timing circuits to generate nonsinusoidal waveforms.
D. They allow waveform distortion.