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Joachim Steiger roh at hyte.deHarald Welte wrote: [...] > However, now that I think of it, PCIe requires PCB thickness to be > different (1.5mm) from what we are hading for (more like .8 or 1mm). > > So I guess I'll scrap that idea. what about making it 2 pcb? one 'gsm module' with 'plated half holes'* and or board to board conn. one 'carrier board' which then has the right thickness for the pcie-con. that way the sandwhich is mechanical stable and the rf performance shouldnt be tampered with and can even serve as additional shielding if needed (e.g. make side opposite to the modem gnd flat). this makes the modules as small as possible for integration into different kinds of carriers or even a full phone. what do you think? [*] http://www.multi-circuit-boards.eu/en/pcb-design-aid/design-parameters/plated-half-holes.html -- roh