1) Explain what is meant by the super-heterodyning?
2) A carrier of 20 MHz is amplitude modulated with a signal frequency of 3 KHz and amplitude of 5V. If the modulation index is 0.5, draw the spectra of the waveform.
3) Mathematically represent an FM wave.
4) Explain the need for the Pre-emphasis and De-emphasis circuits?
5) Design the PSK signal waveform. And explain it in brief.
6) Explain what is meant by the Sampling theorem.
7) Speicfy the Kepler’s three laws of the planetary motion.
8) Explain what is Numerical Aperture?
9) Explain why is the hexagonal cell shape chosen in the cellular technology?
10) Write differences of the soft handover with hard handover.