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NL668-LA series module main antenna requirements
Impedance
Input power
Standing wave ratio
recommended
7.5.2 Antenna reference design
Antenna is a sensitive device, susceptible to the external environment. For example, the size of the
module, the location of the antenna, the space it occupies, and the surrounding ground all may affect
antenna performance. In addition, the RF cable connect with antenna, and the location of the fixed
antenna also may affect its performance. NL668-LA series module's three antenna all led by welding
plate. recommended clients use the U.FL-R-SMT-1 antenna connector and corresponding match
adapter cable. Figure 7-1 is reference design of main antenna and diversity antenna.
Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM NL668-LA Series Hardware User Manual
LTE Band 7(2600): 190 MHz
LTE Band 8(900): 80 MHz
LTE Band 12(700): 50 MHz
LTE Band 17(700): 50 MHz
LTE Band 28(700):100 MHz
LTE Band 66(2100):490 MHz
LTE band 38(2600):50 MHz
LTE band 40(2300):100 MHz
50 ohm
> 33dBm (2 W) peak power GSM
> 23dBm average power WCDMA & LTE &TD-SCDMA&CDMA&EVDO
≤ 2:1
Table 7- 6 Main Antenna Requirements
Page 51 of 65
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