ZTE Corporation ZM8300G Manuale Utente
ZTE ZM8300G Module Hardware User Manual
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4.4.7
Requirements for IoT Antenna Design
Table 4-7 lists requirements for basic parameters for designing an IoT antenna.
Table 4-7 Requirements for Antenna Design
Parameter
Requirement
VSWR
<2
Gain (dBi)
>1
Maximum input power
(dBm)
25.7
Input impedance (ohm)
50
Polarization
Linear polarization
4.4.8
Precautions for Early Antenna Design
When determining a location for an antenna, observe the following guidelines: Ensure that the
location and the base station served by the antenna are in the horizontal direction, with the
goal of enabling the antenna to produce the highest efficiency; ensure that the location is far
away from components or chips that may generate electromagnetic interference such as a
switch-mode power supply, data line, and chip; ensure that the location is unreachable by
hand, with the goal of preventing hands from causing antenna attenuation. In addition,
consider radiation reduction and structure feasibility. Therefore, at the beginning of antenna
design, invite structure engineers, ID engineers, circuit engineers, and antenna engineers to
assess the layout. If a system board needs to process signals from multiple antennas,
consider co-channel interference.
ZTE has certified multiple antenna vendors. If required, ZTE can recommend several antenna
vendors for antenna design.