Hi everyone,

I am currently working on a FM square wave receiver. Basically it demodulates my signal and outputs the frequency i need (square wave 1khz 1vpp)

I tried using PLL receiver but it does not demodulate square. I am out of choices.

Can anyone suggest a name for a simple square wave receiver (if possible?)

The reason why is i have a LM555 which creates PWM , then it is amplified by a 2 stage amplifier , it transmits through collpitt oscillator.

This PWM will control a servo and it works extremely well but i need a receive to demodulate square wave.....really need your help everyone !!

Thanks.

 

A simple monostable will FM demodulate a FM signal. Just put a low pass filter after the monostable and the audio will be what's left.

 

Do you mean a typical monostable circuit using LM555 and the LP filter it?

Can you suggest me a circuit or i can simply google a monostable circuit , then antenna to input of the monostable circuit, to LP filter, to PLL receiver?


THANK YOU VERY MUCH !!!!

 

The monostable replaces the PPL. It works by a different principle, but the end result is the same. It turns an FM signal is a form of PWM (pulse width modulation).