Gnss Antenna Interface - Quectel EG91 Series Hardware Design
Lte standard module
Hide thumbs
Also See for EG91 Series:
- Hardware design (98 pages) ,
- Hardware design (94 pages) ,
- Hardware design (109 pages)
Table of Contents
Advertisement
5.2. GNSS Antenna Interface
The GNSS antenna interface is only supported on EG91-NA/-VX/-EX/-NAX/-NAXD/-NAXDL/-AUX/-NAL.
The following tables show pin definition and frequency specification of GNSS antenna interface.
Table 25: Pin Definition of GNSS Antenna Interface
Pin Name
ANT_GNSS
(EG91-AUX/-EX/-NA/-NAL/-NAX/-NAXD
/-NAXDL/-VX)
Table 26: GNSS Frequency
Type
GPS
GLONASS
Galileo
BeiDou
QZSS
A reference design of GNSS antenna is shown as below.
EG91_Series_Hardware_Design
Frequency
1575.42 ±1.023
1597.5–1605.8
1575.42 ±2.046
1561.098 ±2.046
1575.42
Module
ANT_GNSS
NM
Figure 31: Reference Circuit of GNSS Antenna
Pin No.
I/O
Description
49
AI
GNSS antenna
VDD
0.1 μF
10R
47 nH
100 pF
0R
NM
LTE Standard Module Series
Comment
50 Ω impedance
Unit
MHz
MHz
MHz
MHz
MHz
GNSS
Antenna
63 / 105
Advertisement
Table of Contents
