SV: [sdiy] 40Mhz triangle core on FR4 substrate!

[karl dalen]

Oh, sorry, forget previous posting, i just remembered, 
1,2Ghz is about possible with not to much losses (0,02 in loss)!
Well, im then of to the lab to do some diy ! :)

KD

--- karl dalen <dalenkarl at yahoo.se> skrev:

> Im trying to scream up a 8Mhz triangle VCO core 
> to 40Mhz on a FR4 PCB substrate, does anyone know
> of a online PCB design tutortial for RF somwhere?
> 
> How high up can one design "easy" with single and doubble
> sided FR4 substrate? 2 layer ought to create capacitive
> problems at certain frequency. I used to know this but 
> i have completely forgotten!! 
> 
> I mean, how far can one design in frequency without
> having to take to much care of the properties of 
> the FR4 material?
> 
> KD
>