From: Sean Breheny <shb7@cornell.edu>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Mon, 18 Jan 2021 15:20:55 -0800
Subject: Re: [EE] Lossy bandwidth compression with analog circutry?
Thread-Topic: [EE] Lossy bandwidth compression with analog circutry?
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Don't forget that if you can accept lossy signal processing, you can
use aliasing to your advantage. For example, if you undersample but
can control the precise sampling frequency then you can make small
changes in the sampling frequency and shift aliased signals around to
get a good picture of what the spectrum looks like without having to
actually sample at 2x the highest frequency. If, however, you need an
actual accurate instantaneous snapshot of the entire 100MHz of
spectrum then there is no way to do that without sampling at least at
200 Msps.

Sean


On Sat, Jan 16, 2021 at 7:46 PM Jason White
<whitewaterssoftwareinfo@gmail.com> wrote:
>
> That's right, as you mentioned a fast ADC and processor is needed to cove=
r
> large bandwidths. I was curious if there were other methods.
>
--=20
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