Modulation Basic Equations

Ask

Find the correct match between group 1 & group 2 Group P. $ (1+km(t)A sin(\Omega t))$ Q.$ km(t) A sin(\Omega t)$ R.$ A sin(\Omega t + k m(t))$ S. $ A sin[\Omega t + k \int (m(t))]$ Group 2 W. Phase Modulation X.  Frequency Modulation Y. Amplitude Modulation Z. DSB-SC Modulation

(a) P-Y , Q- Z , R- W, S-X
(b) P-Z , Q -Y, R - W, S- X
(c) P- X, Q-W,R-Y,S-Z
(d) none of above



Answer is ( a )

Concept

$ (1+km(t)A sin(\Omega t))$ - Amplitude Modulation

$ km(t) A sin(\Omega t)$ -  DSB-SC Modulation

$ A sin(\Omega t + k m(t))$ - Phase Modulation

$ A sin[\Omega t + k \int (m(t))]$ - Frequency Modulation