Layout Recommendation; Ground Planes; Rf Connection - FALCOM JP7-T Series Hardware Description

GPS-RECEIVER JP7-T

9 Layout recommendation

9.1 Ground planes

JP7-T GPS receiver needs two different ground planes. The pins RF_GND
(Pins 11, 12, 13, 14, 15, 16, 18) shall be connected to analog ground, the
pins GND (Pins 2, 10, 30) to digital ground.
The two ground planes shall be separated :
♦
the planes are connected inside the receiver (see Figure 11).
Digital GND
Figure 11: Ground plane of the JP7-T family GPS receiver

9.2 RF connection

The JP7-T family GPS receiver is designed to be functional by using either
a passive patch antenna or an antenna connector with standard RF cables. In
order to make a RF connection properly, the user has to connect the antenna
points or the pins of the connector to the RF pin (pin 17) and RF grounds
(GND's of RF part), respectively (see Figure 11)
Figure 12: RF connection to antenna feed of the JP7-T GPS receiver.
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connected internally
Analog GND
VERSION 1.02
RF connector feed
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