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Sigma Delta and PWM modulation

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amitk3553

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DIfference b/w sigma delta and PWM modulation.Which one is best suitable for GFSK demodulator.
 

hi,
in pwm the signal duty cycle reduces where as in the other we have variable change in the width of the pulse thus providing more accuracy which can be generally useful for inverter application probably this would be better.

regards
bala krishna
 

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