LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 35 / 54
5.2. Antenna Requirements
The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
Table 18: Antenna Requirements
Type
Requirements
GNSS
1)
Frequency range: 1559MHz~1609MHz
Polarization: RHCP or linear
VSWR: < 2 (Typ.)
Passive antenna gain: > 0dBi
Active antenna noise figure: <1.5dB
Active antenna gain: > 0dBi
Active antenna embedded LNA gain: < 17dB
GSM/UMTS/LTE
VSWR:
≤ 2
Efficiency: > 30%
Max input power: 50W
Input impedance
: 50Ω
Cable insertion loss: < 1dB
(GSM850, EGSM900, WCDMA B5/B6/B8/B19, LTE-FDD B5/B8/B12/
B13/B18/B19/B20/B26/B28)
Cable insertion loss: < 1.5dB
(DCS1800, PCS1900, WCDMA B1/B2/B4, LTE-FDD B1/B2/B3/B4/B25,
LTE-TDD B39)
Cable insertion loss: < 2dB
(LTE-FDD B7, LTE-TDD B38/B40/B41)
1. It is recommended to use a passive GNSS antenna when LTE B13 or B14 is supported, as the use of
active antenna may generate harmonics which will affect the GNSS performance.
2. Since the GNSS port has a 2.85V voltage output, a passive antenna that causes shorting to GND,
such as PIFA antenna is not recommended.
NOTES
