Reference Design - Quectel UC20 Hardware Design

UMTS 900
UMTS 850
UMTS 800

5.1.3. Reference Design

The reference design of main antenna and UMTS Rx-diversity antenna is shown as below. It should
reserve a π-type matching circuit for better RF performance. The capacitors are not mounted by default.
NOTE
Keep a proper distance between main antenna and diversity antenna to improve the receiving sensitivity.
UC20_Hardware_Design
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925 ~ 960
869 ~ 894
875 ~ 885
ANT_MAIN
ANT_DIV
Module
Figure 33: Reference Circuit of Antenna Interface
Confidential / Released
880 ~ 915
824 ~ 849
830 ~ 840
Main
antenna
R1 0R
C2
C1
NM
NM
Diversity
antenna
R2 0R
C4
C3
NM
NM
UMTS/HSPA Module Series
UC20 Hardware Design
MHz
MHz
MHz
56 / 82