Reference Design Of Rf Antenna Interfaces - Quectel QuecOpen AG521R-NA Hardware Design

LTE-FDD B14
LTE-FDD B17
LTE-FDD B26
LTE-FDD B5
LTE-FDD B30
LTE-FDD B7
LTE-FDD B71
2 )
LTE-FDD B29
NOTE
1)
1. LTE-FDD B29, B30 and B32 support Rx only.

4.1.3. Reference Design of RF Antenna Interfaces

A reference design of main and Rx-diversity antenna interfaces is shown as below. It is recommended to reserve a
π-type matching circuit for better RF performance, and the π-type matching components (R1/C1/C2 and R2/C3/C4)
should be placed as close to the antennas as possible. The capacitors are not mounted by default.
NOTES
AG521R-NA_QuecOpen_Hardware_Design
788-798
704-716
814-849
824~849
/
2500~2570
663-698
/
Module
ANT_MAIN
ANT_DIV
Figure 31: Reference Circuit of RF Antenna Interfaces
AG521R-NA QuecOpen Hardware Design
758-768
734-746
859~894
869~894
2350-2360
2620~2690
617-652
717-728
Main
Antenna
R1 0R
C2
C1
NM
NM
Diversity
Antenna
R2 0R
C4
C3
NM
NM
Automotive Module Series
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
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