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LEA-M8S / LEA-M8T - Hardware Integration Manual
0.8 mm
[31.5 mil]
17.0 mm [669 mil]
Figure 5: LEA-M8S / LEA-M8T footprint
Figure 6: LEA-M8S / LEA-M8T paste mask
2.4 Antenna and Antenna supervision
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, care should be taken 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 Ω.
Minimal setup with a good patch antenna
Figure 7 shows a minimal setup for a design with a good GNSS patch antenna.
Figure 7: Module design with passive antenna (for exact pin orientation see the LEA-M8S Data Sheet [1] and the NEO/LEA-M8T
Data Sheet [2])
UBX-13003140 - R07
Production Information
Design
Page 11 of 31
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