We have older revision M10578-A3 parts that are working fine in our design. We just built boards with newer GPS modules and the GPS isn't working. Markings on the parts are shown below. Any insight would be helpful.
Antenna Engineer at Antenova Yu Kai is an antenna expert with over 10 years of experience in the design and testing of antennas. He has experience helping customers with certification testing, combined with his knowledge of RF measurement procedures.