User's Manual

H380 M.2 Series Module Hardware User Manual page
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7 RF Interface
7.1 Operating Band
7.1.1 Antenna Band
Operating Band Tx Rx
UMTS 2100 (Band I IMT) 1920–1980 MHz 2110–2170 MHz
UMTS 1900 (Band II IMT) 1850–1910 MHz 1930–1990 MHz
UMTS 850 (Band V IMT) 824–849 MHz 869–894 MHz
UMTS 900 (Band VIII IMT) 880–915 MHz 925–960 MHz
GSM 850 824–849 MHz 869–894 MHz
GSM 900 880–915 MHz 925–960 MHz
DCS 1800 1710–1785 MHz 1805–1880 MHz
PCS 1900 1850–1910 MHz 1930–1990 MHz
7.1.2 Diversity Antenna Band
Operating Band Rx
UMTS 2100 (Band I IMT) 2110–2170 MHz
UMTS 1900 (Band II PCS) 1930–1990 MHz
UMTS 850 (Band V CLR) 869–894 MHz
UMTS 900 (Band VIII GSM) 925–960 MHz
7.2 RF PCB Design
7.2.1 Impedance Design
The impedance of RF should be matched 50 ohm.
7.3 Antenna Design
7.3.1 Main Antenna Design Requirements
(1) Antenna Efficiency
Antenna efficiency is the ratio between antenna input power and radiation power. The radiation power of
an antenna is always lower than the input power due to the following factors: return loss, material loss,