Re: AM demodulation

Hi Barry and Bill,

> I don't know how wide a spectrum the PLL can handle.

Generally, that's not really inherently limited by anything but the
loop bandwidth.

It's a really simple PLL, with a complex sample-argument phase
detector.

In other words: if you set the loop bandwidth too high, the PLL will
jump around like crazy in the presence of noise, or might lock onto
data instead of carrier.

Pick a bandwidth too small, and it won't be able to ever lock to even
the cleanest carrier if it's further away. It also won't be able to
"follow" a changing carrier frequency (might be pretty relevant for
satcom, if it's not geosync.

Best regards,
Marcus