I rethinked the problem after reading several papers.
OK. We have an if-strip. To avoid spectral regrowth in later stages
because of saturation, the input must be amplitude
controlled. Pulses and bursts at the input will saturate somewhere in
the stages. An common AGC is always design-limite
Hi Magnus -
Well. I made homework for sure. Endless viewed websites what others had
done.
We all seek for the singularity of beauty in our art. At the moment this
is a CD4007 or similar without AGC. Cheap, effective. Not oversized. I
came from TCA440. One of the not many receiver chips where t
On 28/01/11 03:33, ehydra wrote:
Magnus Danielson schrieb:
On 27/01/11 20:19, ehydra wrote:
I found chapter Appendix 7A "Analysis of interference in a hard limiter"
There is a half page with a couple of formulas. Not much, not
practically oriented. Only idealized hard-limiters.
I'm interested
Magnus Danielson schrieb:
On 27/01/11 20:19, ehydra wrote:
I found chapter Appendix 7A "Analysis of interference in a hard limiter"
There is a half page with a couple of formulas. Not much, not
practically oriented. Only idealized hard-limiters.
I'm interested in SOFT-limiters!
Jim's problem
On 27/01/11 20:19, ehydra wrote:
I found chapter Appendix 7A "Analysis of interference in a hard limiter"
There is a half page with a couple of formulas. Not much, not
practically oriented. Only idealized hard-limiters.
I'm interested in SOFT-limiters!
Jim's problem was with a hard-limiter so
On 1/27/11 11:19 AM, ehydra wrote:
I found chapter Appendix 7A "Analysis of interference in a hard limiter"
There is a half page with a couple of formulas. Not much, not
practically oriented. Only idealized hard-limiters.
I'm interested in SOFT-limiters!
Soft limiters are even more complex to
I found chapter Appendix 7A "Analysis of interference in a hard limiter"
There is a half page with a couple of formulas. Not much, not
practically oriented. Only idealized hard-limiters.
I'm interested in SOFT-limiters!
Hm. Does the writer seen a real working system once upon in time?
- Henry
Hi Mike,
On 27/01/11 18:25, Mike Feher wrote:
Even the original is a good classic on PLLs. I have an original photocopy of
the typed pre-publication volume, as well as the actual book. Regarding hard
limiters, we did a lot of study on their behavior on the resulting power
spectra. We use a one b
Hi,
On 27/01/11 01:30, ehydra wrote:
Hm Magnus -
I heard of it as a standard text book but never looked inside. And not
known that it describes limiter behaviour.
Anyway. Now I have a version of 2004, 3rd edition, and cannot find the
mentioned chapter. Please post a little more info, so I can
..@febo.com] On
Behalf Of Magnus Danielson
Sent: Wednesday, January 26, 2011 12:34 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] power spectrum of hard limiter output
On 26/01/11 00:35, ehydra wrote:
> Hi Magnus -
>
> What book? This one maybe:
> Gardner F M PHASELOCK TECHNIQUES Wiley
time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ehydra
Sent: Wednesday, January 26, 2011 7:31 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] power spectrum of hard limiter output
Hm Magnus -
I heard of it as a standard text book but neve
Hm Magnus -
I heard of it as a standard text book but never looked inside. And not
known that it describes limiter behaviour.
Anyway. Now I have a version of 2004, 3rd edition, and cannot find the
mentioned chapter. Please post a little more info, so I can find with
keywords.
Thank you!
-
On 26/01/11 04:32, jimlux wrote:
On 1/25/11 10:47 AM, Magnus Danielson wrote:
Jim,
On 25/01/11 14:53, jimlux wrote:
On 1/24/11 1:19 PM, Magnus Danielson wrote:
What are you *really* trying to achieve? 1-bit ADC at the end of a
noisy
channel?
I have a GPS receiver front end (sampler) that
On 26/01/11 00:35, ehydra wrote:
Hi Magnus -
What book? This one maybe:
Gardner F M PHASELOCK TECHNIQUES Wiley & Sons 1966
Yes, but there is later revisions of it. A classic on PLLs.
Cheers,
Magnus
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time-nuts mailing list -- time-nuts@febo.com
T
On 1/25/11 10:47 AM, Magnus Danielson wrote:
Jim,
On 25/01/11 14:53, jimlux wrote:
On 1/24/11 1:19 PM, Magnus Danielson wrote:
What are you *really* trying to achieve? 1-bit ADC at the end of a noisy
channel?
I have a GPS receiver front end (sampler) that normally one tests by
running GPS
Hi Magnus -
What book? This one maybe:
Gardner F M PHASELOCK TECHNIQUES Wiley & Sons 1966
- Henry
Magnus Danielson schrieb:
It goes towards sine as I recall it. The gaussian noise rubs of
overtones. Gardner describes this in his PLL book. Setting up a nice
sawtooth detector is no good when
Hi Bob -
Yes. But coming back to the CMOS inverter multi-stage amplifier:
Because of the absolute momentum signal level the first stages
(=amplifier) sees it operates more linear than later more saturating stages.
As long as the single one stage works linear, this stage will not change
the spec
Jim,
On 25/01/11 14:53, jimlux wrote:
On 1/24/11 1:19 PM, Magnus Danielson wrote:
What are you *really* trying to achieve? 1-bit ADC at the end of a noisy
channel?
I have a GPS receiver front end (sampler) that normally one tests by
running GPS signals through it, acquiring and tracking th
Yes, it depends. Sometimes noise lowers SNR, sometimes it improves.
A similar scheme exists to improve ADC performance. If I remember it
correctly, LTC owns a patent where they inject pseudo-noise with known
properties, then the signal runs thru the ADC, then 'a picture of' the
added input noi
On 1/24/11 1:41 PM, Bob Camp wrote:
Hi
Most communications systems also have constraints based on signals in
adjacent channels. That pretty much forces a solution of "lots of filter
before lots of gain". Distributing both gain and filtering across multiple
stages gets you into a variety of issue
On 1/24/11 1:19 PM, Magnus Danielson wrote:
What are you *really* trying to achieve? 1-bit ADC at the end of a noisy
channel?
I have a GPS receiver front end (sampler) that normally one tests by
running GPS signals through it, acquiring and tracking the signals and
deriving SNR estimates,
Re: [time-nuts] power spectrum of hard limiter output
The classical approach is to heavily band-limit the input of an
following hard-limiter. But would it possible to merge both functions in
several stages of an IF-strip?
I think most individuals cannot follow much of this idea but time-nuts
have t
On 24/01/11 21:32, jimlux wrote:
On 1/24/11 11:44 AM, Magnus Danielson wrote:
On 24/01/11 07:39, Bruce Griffiths wrote:
jimlux wrote:
On 1/23/11 10:01 PM, Magnus Danielson wrote:
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the
output
of
The classical approach is to heavily band-limit the input of an
following hard-limiter. But would it possible to merge both functions in
several stages of an IF-strip?
I think most individuals cannot follow much of this idea but time-nuts
have the same problem :-)
My main interest is a pract
On 1/24/11 11:44 AM, Magnus Danielson wrote:
On 24/01/11 07:39, Bruce Griffiths wrote:
jimlux wrote:
On 1/23/11 10:01 PM, Magnus Danielson wrote:
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the
output
of a hard limiter (1 bit thresholder
On 24/01/11 07:39, Bruce Griffiths wrote:
jimlux wrote:
On 1/23/11 10:01 PM, Magnus Danielson wrote:
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoi
jimlux wrote:
On 1/23/11 10:01 PM, Magnus Danielson wrote:
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoid.
At high SNR, the output of the limiter
On 1/23/11 10:01 PM, Magnus Danielson wrote:
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoid.
At high SNR, the output of the limiter is basically a
On 1/23/11 7:34 PM, shali...@gmail.com wrote:
Jim,
You should be able to model it in Spice and do an FFT on the output.
Or in Matlab.. Simulation is easy for this one...
I was looking for a paper that looked at it analytically.. I figure it's
such a straightforward thing that someone back i
Jim,
On 24/01/11 02:35, jimlux wrote:
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoid.
At high SNR, the output of the limiter is basically a square wave at at
the input frequency, but as
Reply-To: Discussion of precise time and frequency measurement
Subject: [time-nuts] power spectrum of hard limiter output
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoid.
At
I'm looking for a reference that gives the power spectrum of the output
of a hard limiter (1 bit thresholder) with band limited noise and a
single sinusoid.
At high SNR, the output of the limiter is basically a square wave at at
the input frequency, but as the SNR decreases, it starts to act l
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