Product Info

LTE Module Series
EG91 Hardware Design
EG91_Hardware_Design 59 / 93
5 Antenna Interfaces
EG91 antenna interfaces include a main antenna interface and anRx-diversity antennainterface which is
used toresist 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/-V/-EC. The impedance of the antenna port
is50Ω.
5.1. Main/Rx-diversityAntenna Interfaces
5.1.1. Pin Definition
The pin definitionof main antenna and Rx-diversityantenna 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/-V/-EC)
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
WCDMA B2 1850~1910 1930~1990 MHz