Ublox LEA-M8F, Руководство по интеграции оборудования

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LEA-M8F - Hardware Integration Manual
UBX-14000034 - R03 Early Production
Information
Design
Page 13 of 30
Non 'emitting'
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RF Part
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RF & heat
'emitting'
circuits
PCB
Digital & Analog circuits
RF& heat
'emitting'
circuits
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Figure 6: Placement (for exact pin orientation see LEA-M8F Data Sheet [1])
2.1.2 Antenna connection and ground plane design
The LEA-M8F module can be connected to passive patch or active antennas. The RF connection is on the PCB
and connects the
RF_IN pin with the antenna feed point or the signal pin of the connector, respectively. Figure 7
illustrates connection to a typical five-pin RF connector. One can see the improved shielding for digital lines as
discussed in the
GPS Antenna Application Note [5]. Depending on the actual size of the ground area, additional
vias should be placed in the outer region. In particular, the edges of the ground area should be terminated with
a dense line of vias.
Figure 7: Recommended layout (for exact pin orientation see the LEA-M8F data sheet [1])