Quectel EG21-G - Antenna Installation; Antenna Requirement

LTE Module Series
EG21-G Hardware Design
EG21-G_Hardware_Design 61 / 100
Table 27: 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
A reference design of GNSS antenna is shown as below.
GNSS
Antenna
VDD
Module
ANT_GNSS
47nH
10R
0.1uF
100pF
NMNM
Figure 35: Reference Circuit of GNSS Antenna
1. An external LDO can be selected to supply power according to the active antenna requirement.
2. If the module is designed with a passive antenna, then the VDD circuit is not needed.
5.3. Antenna Installation
5.3.1. Antenna Requirement
The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
NOTES