ZTE Corporation ZM8300G 用户手册
ZTE ZM8300G Module Hardware User Manual
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38
Signal
Pin
Description
Remarks
GND
10
Grounding
GPS_ANT
11
GPS antenna
interface
50
Ω
GND
12
Grounding
3.13.2 Antenna Design Points
Antennas are easily affected by external environments, for example, antenna locations,
antenna occupied room, and surrounding devices. The ZM8300G module provides two
antenna pads for antenna design, with a ground point available to each side of each pad, to
ensure good grounding. Figure 3-17 illustrates a reference circuit for antenna design. The
dual-L matching network helps improve the RF performance. During the design, place the
component near the module, and place the antennas near the matching network, so as to
reduce path loss. Figure 3-19 illustrates the recommended antenna circuit, which includes
resistors, capacitors, and inductors.
ZM8300
ANT
ANT
MAIN_ANT
GPS_ANT
Figure 3-19 Reference Circuit for the Antenna Interfaces
For detailed requirements for antenna design, see section 4.6.