Fishfood
Newbie
I'm working on a project for an upconverter around 27 GHz, and looking to use Isola Itera. Which substrate height is the best to use for this frequency? I have heard rules thumb for 10% of the wavelength and up to quarter wavelength to avoid resonant modes. For er=3.38, this would be 0.054mm or 0.135mm respectively. Does this indicate I should be using 0.127mm substrate height, or is this overkill? The linewidth for a 50Ohm line would be 0.29 mm for the 0.135mm case which feels way too thin.
The chain will include predominantly SMT QFN components and planar designed hair pin filters.
The chain will include predominantly SMT QFN components and planar designed hair pin filters.