User's Manual

LTE Module Series
EC21 Hardware Design
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5.3. Antenna Installation
5.3.1. Antenna Requirement
The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
Table 29: Antenna Requirements
Type Requirements
GNSS
Frequency range: 1561~1615MHz
Polarization: RHCP or linear
VSWR: <2 (Typ.)
Passive antenna gain: >0dBi
Active antenna noise figure: <1.5dB
Active antenna gain: >-2dBi
Active antenna embedded LNA gain: 20dB (Typ.)
Active antenna total gain: >18dBi (Typ.)
GSM/WCDMA/LTE
VSWR: ≤2
Gain (dBi): 1
Max input power (W): 50
Input Impedance (ohm): 50
Polarization type: Vertical
Cable insertion loss: <1dB
(GSM900, WCDMA B5/B8,
LTE B5/B8/B12/B13/B18/B19/B20/B26/B28)
Cable insertion loss: <1.5dB
(GSM1800, WCDMA B1/B2/B4,LTE B1/B2/B3/B4)
Cable insertion loss <2dB
(LTE B7/B40)