AP EAMCET201824 Apr 2018Morning ShiftPhysicsCommunication SystemActual
A modulated signal is given by C_m(t)=A_c _c t+ A_c _m t _c t , where is modulation index. To keep the signal without distortion, the value of should be
Options
- A>1
- B≥ 1
- C= 1
- D≤ 1
Correct answer
D. ≤ 1
Step-by-step solution
Modulation index is given by = A_m A_c where, A_m and A_c are amplitude of modulating wave and carrier wave. To keep signal without distortion, gathered A_m A_c 1 gathered