G6
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
12
4 Antenna Interface
4.1 Impedance Control
RF_IN is the GNSS RF interface of G6, which requires a characteristic impedance of 50Ω.
Figure 3-6 shows the GNSS structure inside G6. Control the impedance of the traces between the pins
and antenna to ensure the RF performance. An impedance matching circuit, such as L network, split
capacitor network, and pi network is mandatory in between. Pi network is recommended.
Figure 4-1 L network
RF_IN
GNSS
Module
Z1
Z2
D1
Figure 4-2 Split capacitor network
RF_IN
GNSS
Module
Z1
Z2
D1
Z3
