Reference Design - Quectel EC200A Series Hardware Design

LTE-FDD B7
LTE-FDD B8
LTE-FDD B20
LTE-FDD B28
LTE-TDD B38
LTE-TDD B40
LTE-TDD B41

5.1.4. Reference Design

The module provides two RF antenna interfaces for antenna connection.
It is recommended to reserve a π-type matching circuit for better RF performance, and the π-type
matching components (C1, R1, C2 and C3, R2, C4) should be placed as close to the antenna as possible.
The capacitors are not mounted by default.
-94.4 -95.8
-96.7 -98.9
-98.1 -99.3
-98.9 -99.5
-96.5 -95.2
-97.3 -97.3
-94.9 -95.1
Module
ANT_MAIN
ANT_DRX
Figure 28: Reference Circuit for RF Antenna Interfaces
-98
-100.1
-101.4
-102.6
-99.3
-100.5
-97.8
Main
antenna
R1 0 R
C2
C1
NM
NM
Diversity
antenna
R2 0 R
C4
C3
NM
NM
LTE Standard Module Series
-94.3 dBm
-93.3 dBm
-93.3 dBm
-94.8 dBm
-96.3 dBm
-96.3 dBm
-94.3 dBm