Antenna Interface; Module Rf Output Power; Module Rf Receive Sensitivity - SIM Tech SIM900D HD Manual

SIM900D Hardware Design

4 Antenna Interface

SIM900D provides RF antenna interface. And customer's antenna should be located in the customer's main board
and connect to module's antenna pad through microstrip line or other type RF trace which impendence must be
controlled in 50Ω.
SIM900D material properties:
SIM900D PCB Material: FR4
Antenna pad: Gold plated pad
Table23: Pin Definition of the ANT
Pin Name
ANT

4.1 Module RF Output Power

Table24: SIM900D conducted RF output power
Frequency
GSM850
EGSM900
DCS1800
PCS1900

4.2 Module RF Receive Sensitivity

Table25: SIM900D conducted RF receive sensitivity
Receive sensitivity（Typical）
Frequency
GSM850 -109dBm
EGSM900 -109dBm
DCS1800 -109dBm
PCS1900 -109dBm
SIM900D_HD_V1.02
Pin Number
33 RF antenna interface
Max
33dBm ±2db
33dBm ±2db
30dBm ±2db
30dBm ±2db
7
Min
5dBm±5db
5dBm±5db
0dBm±5db
0dBm±5db
Receive sensitivity(MAX)
-107dBm
-107dBm
-107dBm
-107dBm
09.04.2010