Moin,
Thanks for the references!
On Sat, 20 Jun 2015 13:35:54 -0700
"Richard (Rick) Karlquist" wrote:
> Somewhat had asked about "how" close in the 30 dB/decade is
> good for. There is a reference about this issue. The
> book Edson: Vacuum Tube Oscillators has what I believe is
> I think E
On 6/20/2015 1:16 PM, Alex Pummer wrote:
Actually a YIG, even "standalone" has very good phase noise performance,
as long as the tuning current is quite, once upon the time HP made some
cheaper version of the 856x-es spectrum analyzers [ perhaps that was the
95xx ] they had the first LO just "sta
Actually a YIG, even "standalone" has very good phase noise performance,
as long as the tuning current is quite, once upon the time HP made some
cheaper version of the 856x-es spectrum analyzers [ perhaps that was the
95xx ] they had the first LO just "standing alone" no PLL, and drifted
away,
On 6/20/2015 6:25 AM, Jim Lux wrote:
This makes a good case for the "30dB/decade very close in"
Somewhat had asked about "how" close in the 30 dB/decade is
good for. There is a reference about this issue. The
book Edson: Vacuum Tube Oscillators has what I believe is
the first published cal
HI
> On Jun 20, 2015, at 9:25 AM, Jim Lux wrote:
>
> On 6/19/15 9:30 PM, Bob Camp wrote:
>> Hi
>>
>> One of the most interesting things about the last paper mentioned:
>>> On Jun 19, 2015, at 8:57 PM, Charles Steinmetz
>>> wrote:
>>>
>>> Rick wrote:
>>>
However, a better tutorial would
On 6/19/15 9:30 PM, Bob Camp wrote:
Hi
One of the most interesting things about the last paper mentioned:
On Jun 19, 2015, at 8:57 PM, Charles Steinmetz wrote:
Rick wrote:
However, a better tutorial would be the one written by
HP's Dieter Scherer which was published in Microwaves
& RF Magaz
Hi
One of the most interesting things about the last paper mentioned:
> On Jun 19, 2015, at 8:57 PM, Charles Steinmetz wrote:
>
> Rick wrote:
>
>> However, a better tutorial would be the one written by
>> HP's Dieter Scherer which was published in Microwaves
>> & RF Magazine (or possibly Microw
Rick wrote:
However, a better tutorial would be the one written by
HP's Dieter Scherer which was published in Microwaves
& RF Magazine (or possibly Microwave Journal). I believe
the same content was available from HP as an Ap Note or
something.
I suspect the paper you are referring to is:
De
On 6/17/2015 11:36 PM, Attila Kinali wrote:
Do you have any recomendation, where an ordinary engineer could
read up on this topic?
Attila Kinali
There is always Floyd Gardners, Phase Lock Techniques.
However, a better tutorial would be the one written by
HP's Dieter
Rick,
On 06/19/2015 07:32 AM, Richard (Rick) Karlquist wrote:
On 6/18/2015 1:20 PM, Magnus Danielson wrote:
The trick is to convert the 2nd degree loop to a 3rd degree loop, which
then allows for a 12 dB/oct slope, to counteract the 9 dB/oct slope.
No this is not correct. A very conventiona
On 6/18/2015 1:20 PM, Magnus Danielson wrote:
The trick is to convert the 2nd degree loop to a 3rd degree loop, which
then allows for a 12 dB/oct slope, to counteract the 9 dB/oct slope.
No this is not correct. A very conventional Type 2 loop, where the
loop filter consists of an integrator w
On 6/18/15 1:46 PM, Brooke Clarke wrote:
Hi Mark:
Is there any documentation on the HB100?
first hit on google for "HB100 microwave sensor" (recognizing that what
comes up as *my* first hit will probably be different than *your* first
hit)...
https://www.openimpulse.com/blog/products-page/pr
Hi
If you get down to 1 Hz or below on a wide tune microwave VCO, the noise in a
“normal” battery may
be a problem. NIST has some pretty good papers on this. Unless a power supply
is specifically designed with
a wide tune / microwave device measured unusually close in, it’s probably not
going
> When you go very close in on something like a VCO, you get much higher phase
> noise
> than we normally worry about. Some of the “assumptions” that underly the
> measurements
> are no longer true. Small angle of modulation is one, but there are a few
> others.
That's a good point as well. L(f)
Hi Mark:
Is there any documentation on the HB100?
Mail_Attachment --
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
Mark Sims wrote:
hb100 microwave sensor
_
On 6/18/15 10:05 AM, Mark Sims wrote:
If you want to play with a homodyne doppler radar, search Ebay for "hb100 microwave
sensor". It is a cute little 10 GHz doppler module that costs around $6. It can
be operated in continuous or pulsed mode. The output does require a couple of op-amps t
Attila,
On 06/18/2015 08:36 AM, Attila Kinali wrote:
Moin Rick,
On Wed, 17 Jun 2015 13:08:04 -0700
"Richard (Rick) Karlquist" wrote:
Having said that, if an ordinary engineer had asked me this question,
I would think that he needed some coaching on how to clean up the
VCO with a synthesizer
On 6/18/15 3:46 AM, Bob Camp wrote:
Hi
Be careful when you do find the data.
When you go very close in on something like a VCO, you get much higher phase
noise
than we normally worry about. Some of the “assumptions” that underly the
measurements
are no longer true. Small angle of modulation i
Hi Bob:
The DC supply in the HP 4352 VCO test set is very special in that it's output
voltage has extremely low noise.
Another option is to use a battery(s) for the control voltage.
Mail_Attachment --
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.ht
If you want to play with a homodyne doppler radar, search Ebay for "hb100
microwave sensor". It is a cute little 10 GHz doppler module that costs
around $6. It can be operated in continuous or pulsed mode. The output does
require a couple of op-amps to get a TTL level output.
Hi
Be careful when you do find the data.
When you go very close in on something like a VCO, you get much higher phase
noise
than we normally worry about. Some of the “assumptions” that underly the
measurements
are no longer true. Small angle of modulation is one, but there are a few
others. A
Moin Rick,
On Wed, 17 Jun 2015 13:08:04 -0700
"Richard (Rick) Karlquist" wrote:
> Having said that, if an ordinary engineer had asked me this question,
> I would think that he needed some coaching on how to clean up the
> VCO with a synthesizer of sufficiently wide loop bandwidth. However,
> yo
On 6/17/15 6:15 PM, John Miles wrote:
Also see http://www.ke5fx.com/gunnpll.html , a quick and dirty but
successful attempt at locking a Gunnplexer in a relatively low (1
kHz) loop bandwidth. The inband noise is likely too high for good
performance in a radar application, but the basic idea is w
On 6/17/15 1:08 PM, Magnus Danielson wrote:
Jim,
John Miles have been a bit active:
http://www.ke5fx.com/brick/brick.htm
Just to give you a start-sample.
those seemed to be all PLL outputs.. I didn't see the bare VCO data.
And, I'm really interested in the 1 Hz to 100 Hz kind of range.
_
On 6/17/15 1:08 PM, Richard (Rick) Karlquist wrote:
On 6/17/2015 8:22 AM, Jim Lux wrote:
I'm looking for some representative data for inexpensive microwave VCOs
(in the 2.5-6 GHz range, in general). Not in a locked loop situation,
If the phase noise data you have goes to a low enough freque
PM
> To: time-nuts@febo.com
> Cc: mag...@rubidium.se
> Subject: Re: [time-nuts] Close in phase noise of microwave VCOs
>
> Jim,
>
> John Miles have been a bit active:
> http://www.ke5fx.com/brick/brick.htm
>
> Just to give you a start-sample.
>
> Cheers,
>
On 6/17/2015 8:22 AM, Jim Lux wrote:
I'm looking for some representative data for inexpensive microwave VCOs
(in the 2.5-6 GHz range, in general). Not in a locked loop situation,
If you are working up to 2.5 GHz, you can get a low power
chip for $2 from Analog Devices that has a VCO and syn
On 6/17/2015 8:22 AM, Jim Lux wrote:
I'm looking for some representative data for inexpensive microwave VCOs
(in the 2.5-6 GHz range, in general). Not in a locked loop situation,
If the phase noise data you have goes to a low enough frequency to
get below the 1/f corner (which is the case fo
Jim,
John Miles have been a bit active:
http://www.ke5fx.com/brick/brick.htm
Just to give you a start-sample.
Cheers,
Magnus
On 06/17/2015 05:22 PM, Jim Lux wrote:
I'm looking for some representative data for inexpensive microwave VCOs
(in the 2.5-6 GHz range, in general). Not in a locked lo
I'm looking for some representative data for inexpensive microwave VCOs
(in the 2.5-6 GHz range, in general). Not in a locked loop situation,
but just bare: with a DC voltage on the tuning input. I'm particularly
interested in data closer than 100 Hz.
Most of the data sheets (e.g. from Minici
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