Quectel EG21-G User Manual

LTE Module Series
EG21-G Hardware Design
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5 Antenna Interfaces
EG21-G antenna interfaces include a main antenna interface, an Rx-diversity antenna interface which is
used to resist the fall of signals caused by high speed movement and multipath effect, and a GNSS
antenna interface. The impedance of the antenna port is 50Ω.
5.1. Main/Rx-diversity Antenna Interfaces
5.1.1. Pin Definition
The pin definition of main antenna and Rx-diversity antenna interfaces is shown below.
Table 24: Pin Definition of the RF Antenna
Pin Name
Pin No.
I/O
Description
Comment
ANT_MAIN
49
IO
Main antenna pad
50Ω impedance
ANT_DIV
35
AI
Receive diversity antenna pad
50Ω impedance.
If unused, keep it
open.
5.1.2. Operating Frequency
Table 25: Module Operating Frequencies
3GPP Band
Transmit
Receive
Unit
GSM850
824~849
869~894
MHz
EGSM900
880~915
925~960
MHz
DCS1800
1710~1785
1805~1880
MHz
PCS1900
1850~1910
1930~1990
MHz
WCDMA B1
1920~1980
2110~2170
MHz

Quectel EG21-G Specifications

General

Brand	Quectel
Model	EG21-G
Category	Wireless modules
Language	English