Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM SU806 Series Hardware Guide
Page 59 of 86
4.3
GNSS Antenna
GNSS supports GPS/BeiDou.
Table 4-6 GNSS antenna interface definition
Pin Name
Pin Number
I/O
Description
Note
ANT_GNSS
121
AI
GNSS antenna
-
4.3.1
Operating Frequency
Table 4-7 GNSS operating frequency
Mode
GPS
1575.42±1.023
MHz
BeiDou
1561.098±2.046
MHz
4.3.2
GNSS Antenna Reference Design
4.3.2.1
Passive Antenna Reference Design:
SU806D-EAU series module have a built-in LNA. The passive antenna is used in the design of the device.
Microstrip trace is recommended for the GNSS RF route, with insertion loss within 0.2dB and impedance
at 50Ω.
The GNSS antenna reference design is shown in the following figure:
Module
ANT_GNSS
GNSS_Antenna
NC
0R
82nH
Figure 4-3 GNSS passive antenna reference design
Note
: