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Which among the following is true about frequency modulation deviation? 

Option: 1

Frequency modulation deviation shows the deviation of carrier frequency from its unmodulated value after frequency modulation 


Option: 2

It is proportional to the instantaneous amplitude of the modulating signal 


Option: 3

It is proportional to the frequency of carrier wave 


Option: 4

All of the above 


Answers (1)

best_answer

As we have learned

Frequency modulation deviation -

The amount by which carrier frequency is varied from its unmodulated value.

- wherein

The deviation is made proportional to the instantaneous value of the modulating voltage.

 

Frequency Modulation devaition 

                     \delta = f - f_c

Where f_c=  carrier frequency 

          f = frequency of the modulated wave 

                Further   \delta \propto V_m 

And            \delta \propto f_c

Since   \delta_{max } = KV_mf_c

Hence all of the above are true 

 

 

 

 

Posted by

Devendra Khairwa

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