User's Manual

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L816-AM Hardware User Manual Page
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4.5 Antenna Design
4.5.1 Antenna Design Requirements
The L816-AM module provides Main and Diversity antenna interfaces, and the antenna design
requirements are as follows
Main antenna requirements for L816-AM module
Frequency range
The most proper antenna to adapt the frequencies should be used.
Bandwidth
(GPRS/EDGE
GSM850 : 70 MHz
GSM900 : 80 MHz
GSM1800(DCS) : 170 MHz
GSM1900(PCS) : 140 MHz
Bandwidth (WCDMA)
WCDMA band I(2100) : 250 MHz
WCDMA band II(1900) : 140 MHz
WCDMA band V(850) : 70 MHz
WCDMA band VI(850): 55MHz
WCDMA band VIII(900) : 80 MHz
Bandwidth (LTE)
LTE band 2(1900): 140 MHz
LTE Band 4(1700): 445 MHz
LTE band 12(700): 50 MHz
Impedance
50 Ohm
Input power
> 35dBm(2W) peak power GSM
> 25dBm average power WCDMA & LTE
Recommended
standing-wave ratio
(SWR)
2:1