LEA-M8S / LEA-M8T - Hardware integration manual
UBX-15030060 - R06 Design Page 14 of 33
Production information
17.0 mm [669 mil]
22.4 mm [881.9 mil]
1.0 mm
[39 mil]
0.8 mm
[31.5 mil]
2.45 mm
[96.5 mil]
1.1 mm
[43 mil]
3.0 mm
[118 mil]
2.15 mm
[84.5 mil]
0.8 mm
[31.5 mil]
Figure 5: LEA-M8S and LEA-M8T footprint
Figure 6: LEA-M8S and LEA-M8T paste mask
2.4 Antenna
☞ For exact pin orientation in any design, see the LEA-M8S Data sheet [1] and the NEO / LEA-M8T
Data sheet [2].
☞ For recommended parts, see Appendix B.
2.4.1 Antenna design with passive antenna
A design using a passive antenna requires more attention to the layout of the RF section. Typically, a
passive antenna is located near electronic components; therefore, take care to reduce electrical noise
that may interfere with the antenna performance. Passive antennas do not require a DC bias voltage
and can be directly connected to the RF input pin RF_IN. Sometimes they may also need a passive
matching network to match the impedance to 50 .
☞ Use an antenna that has sufficient bandwidth to receive all GNSS constellations. For
recommended parts, see Appendix B.
Minimal setup with a good patch antenna
Figure 7 shows a minimal setup for a design with a good GNSS patch antenna.
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