MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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by default;
4. PCB layout, Module RF port to the antenna between lines as short as possible, and need to plate
factory for RF line do 50
Ω
impedance control.
Figure 19 RF reference circuit
5.3 Installation of antenna
5.3.1 Antenna requirements
The requirements of antenna receiving antenna are shown in the following table:
Table 20 Antenna requirements
Type
Requirement
GSM/TDD-LTE/FDD-LTE
VSWR: < 2
Gain
(dBi): 1
Maximum Inupt (W): 2W
Input impedance
(ohm): 50
Polarization Type:
vertical direction
Cable insertion loss
: < 1.5dB
(GSM900/1800 ; LTE B1/B2/B3/B4/B5/B8/B34/B39)
Cable insertion loss
: < 2dB
(LTE B7/B38/B40/B41)
WIFI/BT
VSWR: < 2