fm modulation ,how to detect it works in simulation ?

Thread Starter

majd-ghadab

Joined Dec 25, 2012
23
Hello everyone i have a big interest in FM transmitters and i am learning how to design them,
the idea is if i designed a circuit and simulate it on multisim (the software witch i am using) or any software and i saw in its output the frequency which i have calculated ,how to ensure that the signal (for example 10 KHz) is modulated with the carrier signal (80 MHz) is there anyway a tool to analyse this signal in multisim or pspice ,cause in AM modulation its easy cause you sea the signal amplitude is changing relatively with input but in FM modulation its hard to discover the low 10 KHz with 80 MHz
i have used spectrum analysis but it doesn't help me , any ideas ??
 
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