User's Manual

Smart Machine Smart Decision
SIM5320ALD_User Manual_V1.01 2014-08-20
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4.2 Operating Specification
SIM5320ALD can support high rate data by WCDMA wireless network. In the different network
environment, data transmission rate shifts depending on modulation and encoding.
Table 37: HSDPA throughout
Category Supported
Max supported
HS-DSCH codes
Theoretical max
peak rate(Mbps)
Modulation
Category1 5 1.2 16QAM,QPSK
Category2 5 1.2 16QAM,QPSK
Category3 5 1.8 16QAM,QPSK
Category4 5 1.8 16QAM,QPSK
Category5

5 3.6 16QAM,QPSK
Category6

5 3.6 16QAM,QPSK
Category7 10 7.2 16QAM,QPSK
Category8 10 7.2 16QAM,QPSK
Category9 15 10.0 16QAM,QPSK
Category10 15 14.0 16QAM,QPSK
Category11 5 0.9 QPSK
Category12

5 1.8 QPSK
Note: Actual throughout rates depend on network configuration, network loading, signal condition and so on.
4.3 Antenna Design Guide
SIM5320ALD provides RF antenna interface. Customer’s antenna should be located in the host board and
connected to module’s antenna pad through micro-strip line or other types of RF trace and the trace
impedance must be controlled in 50Ω.The maximum gain of the Main antenna gain should not exceed
1dBi considering the SAR radio. No antenna gain may be used that would exceed the 2W EIRP power
limit in 1900MHz band.The input impendence of the antenna should be 50Ω, and the VSWR should be
less than 2.
SIMCom recommends that the total insertion loss between the antenna pad and antenna should meet the
following requirements:
● WCDMA 1900<0.9dB
● WCDMA 850<0.5dB
To facilitate the antenna tuning and certification test, a RF connector and an antenna matching circuit
should be added. The following figure is the recommended circuit.