low cost network analyser
Hi apacz,
You need no diagram to duplicate this circuit.
On photographs you can see all of the vital planar circuits
of this simple VNA(wilkinson divider and the wiggle directional coupler). What is more, this circuit is made of the one two-sided
PCB, has relative wide BW, and, according to author, it's working.
Of course, the other serious problem is to develope the freq generating block.
I think there is no place at the www, where you can find ready to use
documentation about the simple, cheap, wideband, high quality VNA.
harlan1