Tuesday, January 21, 2014

RF Probe 1kHz....12GHz



RF   Probe mounted on FR 4. FR 4 copper on one side.


5 comments:

Herbert said...

The idea is good but..... there is the groubd missing..... on the RF side !!
You should split the 68n cap into two 68n in series and place the NEEDED RF ground in the middle !

The it makes sense !

Best regards

Herbert
CT2IJD / DD0PC

Herbert said...

Try the BAT62, it gives better results.

How can I drop files for you ?

Herbert

CT2IJD / DD0PC

LY3LP said...

Hi Herbert,Ebay found only HSMS.This is my old desing.Not even the FR4.Will ned Remarke.On 1,2 GHZ sufficient
Herzliche Gruesse aus Litauen,lieber Herbert, 73! Klemens

Herbert said...

Hi Klemens,

I was only thinking to send you a LTSpice file for a Simulation with BAT62 or others. In your design the RF ground is missing at all ???

In that way you make your results very dependent from the hand that hold the probe ?!

I am using the anti parallel BAT62 double diode also in the heads of an old URV5 ( R&S ) where it works great far into the GHz region,

Writing in English for the non German speking majority of tis world of HAMs.

73 & 55
Herbert
CT2IJD / DD0PC

Grüße aus Portugal

LY3LP said...

Hi Herbert, fine, please send material for discussion. My email kle555@gmail.com
Herzliche Gruesse, Klemens.