Product Info

LTE-A Module Series
EM121R-GL Hardware Design
EM121R-GL Hardware Design 56 / 80
5 RF Characteristics
5.1. Cellular Antenna Interfaces
EM121R-GL provides Main, Rx-diversity and GNSS antenna connectors which are used to resist the fall
of signals caused by high-speed movement and multipath effect. The impedance of antenna ports is
50 Ω.
5.1.1. Connector Definition
Table 33: EM121R-GL Connector Definition of Antenna Interfaces
5.1.2. Operating Frequency
Table 34: Operating Frequency of EM121R-GL
Connector Name
I/O
Description
Comment
Main Antenna
AIO
Main Antenna connector:
⚫ LTE: TRx
⚫ WCDMA: TRx
50 Ω impedance
Rx-diversity
AI
Rx-diversity Antenna connector:
⚫ LTE: DRx
⚫ WCDMA: DRx
50 Ω impedance
3GPP Band
Transmit
Receive
Unit
WCDMA B1
1920–1980
2110–2170
MHz
WCDMA B2
1850–1910
1930–1990
MHz
WCDMA B3
1710–1785
1805–1880
MHz
WCDMA B4
1710–1755
2110–2155
MHz
WCDMA B5
824–849
869–894
MHz