SimCom SIM7020E - LTE Antenna Design Guide

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SIM7020_Hardware_Design_V1.02 30 2018-07-25
3
1710 ~1785 MHz
1805 ~1880 MHz
HD-FDD
5
824 ~849 MHz
869 ~894 MHz
HD-FDD
6 830 ~840 MHz 875 ~885 MHz HD-FDD
8 880 ~915 MHz 925 ~960 MHz HD-FDD
12 699 ~716 MHz 729 ~746 MHz HD-FDD
13 777 ~787 MHz 746 ~756 MHz HD-FDD
18
815 ~830 MHz
860 ~875 MHz
HD-FDD
19 830 ~845 MHz 875 ~890 MHz HD-FDD
20
832 ~862 MHz
791 ~821 MHz
HD-FDD
26 814 ~849 MHz 859 ~894 MHz HD-FDD
28 703 ~748 MHz 758 ~803 MHz HD-FDD
Table 21: CAT-NB1 Reference sensitivity (QPSK)
Operating band
Sensitivity dBm (95% throughput with
repetitions )
1, 3,5, 8, 20, 28 -131
4.2 LTE Antenna Design Guide
Users should connect antennas to SIM7000’s antenna pads through micro-strip line or other types of
RF trace and the trace impedance must be controlled in 50Ω.SIMCom recommends that the total
insertion loss between the antenna pads and antennas should meet the following requirements:
Table 22: Trace loss
Frequency Loss
700MHz-960MHz <0.5dB
1710MHz-2170MHz
<0.9dB
2300MHz-2650MHz <1.2dB
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.