Product Info

LTE Standard Module Series
EG91 Hardware Design
EG91_Hardware_Design 57 / 96
5 Antenna Interfaces
EG91 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. 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/
-EX/-NAX)
56
AI
Receive diversity antenna pad
50Ω impedance
5.1.2. Operating Frequency
Table 25: Module Operating Frequencies
3GPP Band
Transmit
Receive
Unit
EGSM900
880~915
925~960
MHz
DCS1800
1710~1785
1805~1880
MHz
WCDMA B1
1920~1980
2110~2170
MHz