FM radio systems... help needed plz

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EEE student

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Hi all

Actually i'm facing a big problem to me.. it's a question i have to answer next Monday, plz guys do something for me

What are the limiting factors in an FM radio system for reproducing audio sound wave? Describe using diagrams how an FM detector such as a Phase lock Loop detector works?
 
FM transmitter


Wasn't all that covered in your last chapter in class.
 
I was also sleeping during the last class. EEE student, after getting your answer plz forward to me asap.
Thanks in advance.
 

Limiting factors in no order:

Channel Bandwidth
Modulator Frequency response
demodulator frequency response
modulator signal to noise ratio
receiver audio signal to noise ratio
signal propagation distance
receiver noise figure and sensitivity
transmitter antenna gain
receiver antenna gain
receiver audio output power and impedance
receiver demodulator type
transmitter output power


How a PLL works:
**broken link removed**
 
Last edited:
You might add "capture ratio" as multipath interference will certainly effect audio distortion.
 
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