Ok - it doesn't have to be PIN diode, could be anything obtainable.
What I try to do is sampler so it needs a generator able to produce short pulses with sharp edges.
Most circuits I saw used SRDs - but very few companies still produce them, almost impossible to find where to buy online.
Tunnel diodes seem ok too but again - this is legacy technology - even though they are quite cheap on ebay it is limited resource.
Than I read some Agilent application notes about using PIN as frequency multipliers - I have it somewhere on my disk but can't find it right now.
I even have some agilent HSMP PIN diodes laying around (but those "wrong" ones with 200ns life time :evil
As far as I remember they didn't go above 10GHz.
So here is what I would like to find:
- something capable of generating step pulses - the shorter the better
- quite low repetition rate - 1MHz is fine - anything between 100kHz - 100Mhz is fine
- pulse strong enough to drive quad / octal shottky diodes bridge
- parts available on market and acceptable prices - it is not going to be government sponsored hi-tech project but something for personal and educational use - so if something goes wrong I don't want to cry for a whole day that I broke expensive part that is no more produced
This may help you to help me.