I am using a Positioning module that has a SMA port to hot plug an SMA antenna. It also has pins available through its footprint to connect a GPS Antenna.
I want to solder a passive chip antenna about 5-10cm away from the GPS module to be used in case should the external SMA antenna is broken or disconnected. At least with a longer fix time, I would still have some fix, without having no fix at all.
Would having two antennas connected, one through PCB trace and other through direct SMA cable be a problem for the performance of the device?