I'm building a simple Greinacher based RF Power meter for the PMR band i.e 446MHz. I intend it to work as a confirmation device and not something really acurate.
The led is for visual control if the system works well.
From left to right: I have the input SMA, with a transmission line adapted to 50Ohms. Which goes into the C1 capacitor, then in the diodes, and then in the C3 capacitor.
Is it relevant to consider the trace between C1 and D1 and between D1 and C3 as transmission lines? They are short L < 4mm, for a wavelength of around 70cm. For the moment I have used the embedded calculator in kicad to find the dimensions of the transmission line used :