Reliability And Operating Characteristics; Electronic Characteristics - SIM Tech SIMCom SIM5360 Hardware Design

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Figure 39: Antenna matching circuit(MAIN_ANT)
In this figure, the components R1,C1,C2 and R2 is used for antenna matching, the value of components
can only be got after the antenna tuning, usually, they are provided by antenna vendor. By default, the R1,
R2 are 0 ohm resistors, and the C1, C2 are reserved for tuning.
The RF test connector in the figure is used for the conducted RF performance test, and should be placed as
close as to the module's antenna pin. The traces impedance between components must be controlled in
50ohm.
Antenna feed pad
Matching circuit
DIV_ANT
82
J3
J4
R3 R5
GND 58
C3 C5
MODULE
Figure 40: Antenna matching circuit(DIV_ANT)
In above figure, the components R3,C3,C5 and R5 is used for diversity antenna matching. The method of
antenna tuning is same as MAIN_ANT.
5

Reliability and Operating Characteristics

5.1

Electronic Characteristics

Absolute maximum rating for digital and analog pins of SIM5360 are listed in the following table:
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SIM5360_Hardware Design_V1.01 2013-11-22