A 20 GHz Crossover


Solid model of a 20 GHz crossover

I’ve been working on a 20 GHz crossover network. It turned out pretty good in its first iteration, but still needs some “tweaking” …



One of the problems with out-of-the-box  thinking is… you sometimes find yourself  without the box. In this particular case the box I was without was a 40 GHz network analyzer. So, I had to rely on the kindness of strangers. Here is the first article as tested:


I also wish I would have taken the trouble to assemble the test circuit myself. At 40 GHz, I don’t think you can get away with the kind of shenanigans displayed in the photo.

We recently acquired 40 GHz test capability, including a probe station, so we’re going to re-run some measurements to see what needs to be done.

Stay “tuned”…

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