Globalsat ET-314 GPS Engine Board [21/22] Pcb layout recommend

ET-314AC

High Performance GPS Engine Board

2010/4/1

- 21 -

PCB Layout Recommend

Recommended Layout PAD

Unit: mm

Tolerance:

0.1mm

PCB Layout Recommendations

Do not routing the other signal or power trace under the engine board.

RF:

This pin receives signal of GPS analog via external active antenna .It has to be a controlled

impedance trace at 50ohm.

Do not place the RF traces close to the other signal path and not routing it on the top layer.

Keep the RF traces as short as possible.

Antenna:

Keep the active antenna on the top of your system and confirm the antenna radiation pattern、

axial ratio、power gain、noise figure、VSWR are correct when you Setup the antenna in your case.