On 9/16/18 11:06 PM, Attila Kinali wrote:
> Moin,
>
> On Sat, 15 Sep 2018 08:38:55 -0700
> "Richard (Rick) Karlquist" wrote:
>
>> On 9/15/2018 3:26 AM, Attila Kinali wrote:
>>
>>> possible logic family for the task. Otherwise the harmonics of the
>>> switching of the FF will down-mix high
In message
, Azelio Boriani writes:
>How many samples of the Loran input signal in that 1/6th of the period?
Not many: At 5MHz sample rate it was 8 samples.
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In message <20181010165425.df6d24aa3825ca765f301...@kinali.ch>, Attila Kinali w
rites:
>> >"A Physical Sine-to-Square Converter Noise Model,"
>> > by Kinali, 2018
>>
>[...]
>Hence the first gain stage already aliases the noise from its whole
>bandwidth, which can be a lot of noise if
On Mon, 17 Sep 2018 00:37:43 -0500
Dana Whitlow wrote:
> For example, take the case of 10 MHz starting frequency; the phase noise
> several MHz out
> is likely to be nil. But divide the 10 MHz down to, say, 1 Hz; then
> there's likely to be quite a
> lot of phase noise within "folding range" of
Salut Mattia,
On Thu, 20 Sep 2018 12:31:01 +0200
Mattia Rizzi wrote:
> > People talk of aliasing and sampling,
> > but do not describe where the sampling happens in the first place.
> > After all, it's a time-continuous system and as such, there is no
> > sampling.
>
> I would say that the
Hi Attila, everyone,
very interesting discussion!
>People talk of aliasing and sampling,
but do not describe where the sampling happens in the first place.
After all, it's a time-continuous system and as such, there is no
sampling.
I would say that the sampling occurs when you're using only a
Hi
For moderate division ratios ( like 100 MHz down to 1 MHz ), the 20 log N stuff
holds
pretty well ….
Bob
> On Sep 17, 2018, at 12:37 AM, Dana Whitlow wrote:
>
> The act of squaring up the waveform alone might not do much harm, depending
> on the extent
> to which the phase noise on said
On Sun, 16 Sep 2018 23:06:06 +0200
Attila Kinali wrote:
> [2] "A Physical Sine-to-Square Converter Noise Model,"
> by Kinali, 2018
Oops.. I forgot to add the link to the pdf, sorry
http://people.mpi-inf.mpg.de/~adogan/pubs/IFCS2018_comparator_noise.pdf
Attila
The act of squaring up the waveform alone might not do much harm, depending
on the extent
to which the phase noise on said waveform has already been filtered off.
But it's mainly when
the signal gets divided down by large ratios that the difference would
become really noticeable.
For example,
Atilla wrote: "Yes. This effect has been known for a few decades at
least. What kind of puzzles me is, that I have not seen a mathematically
sound explanation of it, so far. People talk of aliasing and sampling,
but do not describe where the sampling happens in the first place. After
all, it's
I'd been thinking, in an admittedly non-rigorous sort of way, about this
matter for some years.
As I see it, it is certainly true that the phase of an oscillator's output
is a continuous funciton
of time. It could be described as a continuous ramp, whose slope
corresponds to the frequency,
and
Moin,
On Sat, 15 Sep 2018 08:38:55 -0700
"Richard (Rick) Karlquist" wrote:
> On 9/15/2018 3:26 AM, Attila Kinali wrote:
>
> > possible logic family for the task. Otherwise the harmonics of the
> > switching of the FF will down-mix high frequency white noise down
> > to the signal band (this is
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