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

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/-NAXD/-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
ANT_MAIN
ANT_DIV
(EG91-E)
ANT_DIV
(EG91-NA/-NS/-VX/
-EX/-NAX/-NAXD)

5.1.2. Operating Frequency

Table 25: Module Operating Frequencies
3GPP Band
GSM850
EGSM900
DCS1800
EG91_Series_Hardware_Design
Pin No. I/O Description
60 IO Main antenna pad
49 AI Receive diversity antenna pad
56 AI Receive diversity antenna pad
Transmit
824~849
880~915
1710~1785
LTE Standard Module Series
EG91 Series Hardware Design
Comment
50Ω impedance
50Ω impedance
50Ω impedance
Receive
869~894
925~960
1805~1880
Unit
MHz
MHz
MHz
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