MarkT:
You have no clearance around the trace, so it will be less than 50 ohms. That microstrip trace width is assuming
a ground plane on the opposite side of the board, and clear space around it top-side.
So if my impedance is less than 50 ohms, can I just decrease the width? I know it's probably harder to calculate, but wouldn't that theoretically work?
Also, the spec sheet for the cellular module says to use large caps in parallel (summing up to 300uF if the power supply can handle up to 2A spikes) to prevent voltage drops on the power supply, and the three VBAT pins are right next to each other but sandwiched in between the cellular antenna and the GNSS antenna. This means I can't really get any clearance unless I remove the large caps. How do you suggest I do this?
Another thing: I'm using the SIM7000 series modules from SIMCOM (spec sheets attached below) and the website and hardware spec sheet all say that there is GNSS built in to the module, but there is no mention of GNSS or GPS on the AT command manual. What is going on here? Should I just use one of their GNSS modules with antennas?
EDIT: I guess I'll assume that the GPS AT commands are the same as their other products like this one.