User's Manual

Table Of Contents
UMTS/HSPA Module Series
UG96 Hardware Design
UG96_Hardware_Design Confidential / Released 50 / 75
UMTS900
925 ~ 960
880 ~ 915
MHz
UMTS850
869 ~ 894
824 ~ 849
MHz
UMTS800
875 ~ 885
830 ~ 840
MHz
4.1.3. Reference Design
The RF external circuit is recommended as below. It should reserve a π-type matching circuit for better
RF performance. The capacitors are not mounted by default.
RF_ANT
R1 0R
C1
NM
C2
NM
Module
Figure 31: Reference Circuit of Antenna Interface
UG96 provides an RF antenna PAD for customer’s antenna connection. The RF trace in host PCB
connected to the module RF antenna pad should be micro-strip line or other types of RF trace, whose
characteristic impendence should be close to 50Ω. UG96 comes with grounding pads which are next to
the antenna pad in order to give a better grounding.