Antenna Installation; Antenna Requirements; Recommended Rf Connector For Antenna Installation - Quectel EM12-G Hardware Design

5.3. Antenna Installation

5.3.1. Antenna Requirements

The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
Table 21: Antenna Requirements
Type
1)
GNSS
WCDMA/LTE
NOTE
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.

5.3.2. Recommended RF Connector for Antenna Installation

EM12-G is mounted with standard 2mm × 2mm receptacle RF connectors for convenient antenna
connection. The connector dimensions are illustrated below:
EM12-G_Hardware_Design
Requirements
Frequency range: 1559MHz ~ 1609MHz
Polarization: RHCP or linear
VSWR: < 2 (Typ.)
Passive antenna gain: > 0dBi
VSWR: ≤ 2
Efficiency: > 30%
Max Input Power: 50W
Input Impedance: 50Ω
Cable insertion loss: <1dB
(WCDMA B5/B8/B19,
LTE B5/B8/B12/B13/B14/B17/B18/B19/B20/B26/B28/B29)
Cable insertion loss: <1.5dB
(WCDMA B1/B2/B3/B4/B9, LTE B1/B2/B3/B4/B9/B21/B25/B32/B39/B66)
Cable insertion loss <2dB
(LTE B7/B30/B38/B40/B41)
LTE-A Module Series
EM12-G Hardware Design
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