LTE Module Series
BG96-NA Hardware Design
BG96-NA_Hardware_Design Confidential / Released 48 / 64
In order to ensure RF performance and reliability, the following principles should be complied with in RF
layout design:
Use impedance simulation tool to control the characteristic impedanceof RF tracesas 50ohm.
The GND pins adjacent to RF pins should not be hot welded, and should be fully connected to
ground.
The distance between the RF pinsand the RFconnectorshould be as short as possible, and all the
right angle tracesshould be changed to curved ones.
There should be clearance area under the signal pin of the antenna connector or solder joint.
The reference ground of RF traces should be complete. Meanwhile, adding some ground viasaround
RF traces and the reference ground could help to improve RF performance. The distance between
theground viasand RF traces should be no less than two times the width of RF signal traces (2*W).
For more details about RFlayout, please refer to
document [4]
.
5.2. GNSS Antenna Interface
The following tables show the pin definition and frequency specification of GNSS antenna interface.
Table 23: Pin Definition of GNSS Antenna Interface
Pin Name
Pin No.
I/O
Description
Comment
ANT_GNSS
49
AI
GNSS antennainterface
50 ohm impedance
Table 24: GNSS Frequency
Type
Frequency
Unit
GPS/Galileo/QZSS 1575.42±1.023
MHz
GLONASS 1597.5~1605.8
MHz
BeiDou 1561.098±2.046 MHz
