It is easy to demonstrate that amplitude modulation satisfies the  superposition principle, whereas angle modulation does not. To  be specific, let m1 (t) and m2 (t) represent two message signals  and let u1(t) and u2(t) represent the corresponding modulated  versions.It is easy to demonstrate that amplitude modulation satisfies the superposition principle, whereas angle modulation does not. To be specific, let m1 (t) and m2 (t) represent two message signals and let u1(t) and u2(t) represen

It is easy to demonstrate that amplitude modulation satisfies the 

superposition principle, whereas angle modulation does not. To 

be specific, let m1 (t) and m2 (t) represent two message signals 

and let u1(t) and u2(t) represent the corresponding modulated 

versions.It is easy to demonstrate that amplitude modulation satisfies the
superposition principle, whereas angle modulation does not. To
be specific, let m1 (t) and m2 (t) represent two message signals
and let u1(t) and u2(t) represent the corresponding modulated
versions.