JP14-R-LP & JP14-Q-LP F
ALCOM
GPS R
ECEIVERS
V
ERSION
1.0.0
9 LAYOUT RECOMMENDATION
9.1 Ground planes
JP14-R-LP/Q-LP GPS receivers need two different ground planes. The pins RF_GND to
both unit should be connected to analog ground, the pins GND to digital ground, see
tables
1
and
2
respectively.
The two ground planes shall be separated:
♦
planes are connected inside the receiver (see figure 10).
Digital GND
Analog GND
connected internally
Figure 10:
Ground plane of the JP14-R-LP/Q-LP GPS receivers
9.2 RF connection
The JP14-R-LP/Q-LP GPS receivers are designed to be functional by using either a
passive patch antenna or an antenna connector with standard RF cables. In order
to make a properly RF connection, the user has to connect the antenna points to
the RF pins of the JP14-R-LP/Q-LP or (RF_IN, see tables
1
and
2
) and RF grounds
(RF_GND), respectively.
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