At some point I would like to capture the ipedance formula that takes into account mu... let me know where there is a good explanation of that.

The microwave office TXLine calculator does show some effect on Z0 when resistance increased, but not enough to explain a 10% shift.

Steve

It is a very hard material to grind.... that is why they make sandpaper out of it! someone told me about a shop that can hopefully do this::

https://arcnano.com/

Thanks again
Steve

WIN semi would also be my guess. I wonder how many other fabless companies use them...

Thanks!

There might be some type of header that fits over the drain supply pin, but that would not work on the ground lug. Honestly, I like your idea, especially since you never have to worry about a clip-leab falling off!

Steve

It does seem weird that there are 2.92 to 3.5mm adapters available... how accurate do you need a calibration? if you don't work for NIST maybe you can ignore a slight discontinuity.

I would like to see the data sheet on the 2.92 mm connector with dielectric.... Thanks!

Keep in touch!
Steve

I'm not sure I have this, but I'll look at some old MWO files. If you have the calculation in Excel or just equations can you provide them?

Steve

I finally got around to adding this info to the interpolation page... Thanks again!

https://www.microwaves101.com/encyclopedias/s-parameter-interpolator

Richard
Thanks for the thoughts! I should have mentioned this, I was thinking of a GaAs pHEMT LNA design.
Steve

Julien

This is great! I will add it to the page as an alternative way to interpolate. SciKit RF is awesome, I'm still waiting for Alex to print up some new shirts. Blam!

Steve

That makes sense! How about if you test some samples at peak power slightly about the requirement, left them on a hot plate, and saw no measurable change in S-parameters or DC current? Would that be a convincing argument?

Thanks

Norman
We will forward your interest to the owner of this equipment and get back to you by email. Thanks for your participation in our discussion board!

Steve

Thanks! I found someone that lent me the book so I am all set!
Steve

That will be a useful paper to many people, thanks!

Steve

Richard

Yes that is what I was referring to. Thanks!

Thank you Mr. Matt! I found someone with a copy of it I was able to borrow. Hoping to learn some multiplier magic!

Partially answering own question.... Faber, Chramiec and Adamski, Microwave and Milliieter Wave Diode Frequency Multipliers....

https://www.amazon.com/Microwave-Millimeter-Wave-Frequency-Multipliers-Hardcover/dp/0890066116

out of print and out of stock.

Thanks! Later this year I will try to do some measurements on PIN diode switches on a spec an... If this Covid thing dies down...

Out mixer spreadsheet has been updated to fix the high-side group delay issue, grab a copy here.

https://www.microwaves101.com/download-area#SparMixer

You are referring to this, correct?

https://www.microwaves101.com/encyclopedias/history-of-microwave-software#handy

Steve

Totally agree. Combine a good process and good people and there is nothing to worry about. This was more of a thought experiment gone awry! Thanks Desert Sage.

I did not consider TDR, thanks madengr!