I was looking at the PCB layout pdf file, and I notice it appears as though the L1 inductor is BETWEEN the U.FL connector and the uBlox module - is this the case or is the pdf outdated/incorrect? Shouldn’t it be that the inductor and resistor are in series between the RF_IN line and the VCC_RF pin, with the RF_IN pin directly connected to the RF connector? Also, have there been issues with multiple connection/disconnections of the antenna with the board? I believe U.FL connectors are only designed for a few insertions before replacement. Would be great to know about these concerns!
We have noticed that problem of the layout . And we will change the layout next version.
Many thanks for your suggestion.