SLM770A Module Hardware Design Manual
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⚫ Maximize the distance between the GNSS antenna, the main antenna and the diversity antenna.
⚫ Digital signals such as USIM card, USB interface, camera module, display interface and SD card
should be far away from the antenna;
⚫ Use ground via around the GNSS trace and sensitive analog signal traces to provide isolation and
protection.
⚫ Keep 50Ω characteristics impedance of the ANT_GNSS trace.
⚫ In case of any static electricity or lightning strikes, reserve a place for TVS on the mainboard.
Refer to Chapter 5 for GNSS reference design and antenna considerations.
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