Re: How to make a super fast sampling head?

John Larkin wrote:
On Thu, 10 Jan 2008 20:57:38 GMT, Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:

Jan Panteltje wrote:
On a sunny day (Thu, 10 Jan 2008 20:03:29 GMT) it happened Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in
<lSuhj.84616$Um6.74872@xxxxxxxxxxxxxxxxxxxxxxxxxx>:

Jan Panteltje wrote:
On a sunny day (Thu, 10 Jan 2008 17:51:19 GMT) it happened Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in
<rWshj.7228$pA7.4769@xxxxxxxxxxxxxxxxxxxxxxxxxx>:

Jan Panteltje wrote:
J Larkin was saying his super sampling head costs 750$.
I was thinking how can you make one yourself, what else is needed?
Usually a transistor that avalanches nicely, a chunk of good coax and blazingly fast diodes, preferable a matched quad.
Any suggestion for diodes?
I have a stash from Microwave Associates which has become M/A COM. You can find the really hot stuff here but you might want to sit down when the quote comes in:

http://www.macom.com/psc/jsp/ListParts.jsp?dataFile=mixing_detector_diodes.txt
mm 80Ghz! wow.

Good stuff. But check you bank account before ordering :-)

Skyworks SMS7621-079, 0.25 pF schottky. I have a reel of them, 23
cents each.


Neat! That's a great deal.

Jan, in Europe you can get this brand via BFI Optilas. In case you want to look these up:
http://www.skyworksinc.com/products_display_item.asp?did=798

--
Regards, Joerg

http://www.analogconsultants.com/
.

Relevant Pages

  • Re: BJT Can be Considered a CCCS in some situations
    ... John Larkin wrote: ... I don't design transistors, I design electronics, so I ... > I don't recall anybody discussing intrinsic device physics here. ... when I stated "the bipolar transistor is a voltage controlled device". ...
    (sci.electronics.design)
  • Re: OT: Rant on Dictatorship
    ... John Larkin wrote: ... In 1934 German physicist Dr. Oskar Heil patented another field-effect transistor. ... The junction transistor was certainly invented at Bell Labs. ... and then the MIT RadLab did extensive theoretical and practical work. ...
    (sci.electronics.design)
  • Re: Google Gropers
    ... John Larkin wrote: ... superficial knowledge of transistor and diode marking codes will help ... The first sign of insanity is denying that you're crazy. ...
    (sci.electronics.basics)
  • Re: How to make a super fast sampling head?
    ... Jan Panteltje wrote: ... Usually a transistor that avalanches nicely, a chunk of good coax and blazingly fast diodes, preferable a matched quad. ...
    (sci.electronics.design)
  • Re: How to make a super fast sampling head?
    ... Jan Panteltje wrote: ... Usually a transistor that avalanches nicely, a chunk of good coax and blazingly fast diodes, preferable a matched quad. ... But check you bank account before ordering :-) ...
    (sci.electronics.design)
Quantcast