UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 49 / 72
4.1.3. Reference Design
T
he 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
UG95 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 50
Ω. UG95 comes with grounding pads which are next to
the antenna pad in order to give a better grounding.
4.2. Antenna Installation
4.2.1. Antenna Requirement
The following table shows the requirement on GSM/UMTS antenna.
Table 20: Antenna Cable Requirements
Type
Requirements
EGSM900
UMTS850/900
Cable insertion loss <1dB
DCS1800
UMTS1900/2100
Cable insertion loss <1.5dB
Quectel
Confidential