hatim butt
New Member
Could somebody have idea for fm demodulation of 75Mhz signal having 16khz message?? i used sl1454 for this but the problem is my demodulated output is clipped and having ripple how could it be sorted out thanks in advance!!!!
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There is some information missing here.fm demodulation of 75Mhz signal having 16khz message
OK, so the deviation is a significant fraction of the carrier frequency, so a faily lowQ tuned circuit is probably required.The deviation is +/-5MHz around center frequency of 75MHz
Did you read what I wrote in my previous post? ....Secondly why i would go for single tuned circuit than double and remove loading resistors???
I was just taking a guess in the absence of information from you.if the deviation is small compared with the carrier frequency, then you need a fairly high Q tuned circuit.
My initial wild guess suggestion would be to use a single tuned circuit (like fig4 in the app note), remove the resistor and make the inductor 140nH and the capacitor 33pF.