Antenna Interfaces; Main/Rx-Diversityantenna Interfaces; Pin Definition; Operating Frequency - Quectel EG91 Series Hardware Design

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.

5.1.1. Pin Definition

The pin definitionof main antenna and Rx-diversityantenna interfaces is shown below.
Table 24: Pin Definition of RF Antenna
Pin Name
ANT_MAIN
ANT_DIV
(EG91-E)
ANT_DIV
(EG91-NA/-NS/-V/-EC)

5.1.2. Operating Frequency

Table 25: Module Operating Frequencies
3GPP Band
EGSM900
DCS1800
WCDMA B1
WCDMA B2
EG91_Hardware_Design

5.1. Main/Rx-diversityAntenna Interfaces

Pin No. I/O Description
60 IO Main antenna pad
49 AI Receive diversity antenna pad
56 AI Receive diversity antenna pad
Transmit
880~915
1710~1785
1920~1980
1850~1910
59 / 93
EG91 Hardware Design
Comment
50Ω impedance
50Ω impedance
50Ω impedance
Receive
925~960
1805~1880
2110~2170
1930~1990
LTE Module Series
Unit
MHz
MHz
MHz
MHz