Compare between FM and PM
PARAMETERS
|
FM
|
PM
|
1. Variable parameter of carrier.
|
Frequency
|
Phase
|
2. Variable parameter proportional to modulating voltage.
|
Frequency deviation
|
Phase deviation.
|
3. Amplitude of modulated signal.
|
Constant
|
Constant.
|
4. Noise immunity
|
Best of all schemes
|
Better than AM
|
5. Coverage area for transmitted power
|
More
|
Moderate
|
6. Signal to noise ratio
|
Best
|
Better
|