Product Info

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design
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5 Antenna Interfaces
EG91 series module antenna interfaces include a main antenna interface and 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 which is only supported on EG91-NA/-NS/-VX/-EX/-NAX/-AUX. 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 RF Antenna
Pin Name
Pin No.
I/O
Description
Comment
ANT_MAIN
60
IO
Main antenna pad
50Ω impedance
ANT_DIV
(EG91-E)
49
AI
Receive diversity antenna pad
50Ω impedance
ANT_DIV
(EG91-NA/-NS/-VX/ 56
AI
Receive diversity antenna pad
50Ω impedance
-EX/-NAX)
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