Antenna Installation; Antenna Requirement - Quectel EG91 Series Hardware Design

NOTES
1. An external LDO can be selected to supply power according to the active antenna requirement.
2. If the module is designed with a passive antenna, then the VDD circuit is not needed.

5.3.1. Antenna Requirement

The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
Table 28: Antenna Requirements
Type
1)
GNSS
GSM/WCDMA/LTE
EG91_Hardware_Design
Figure 35: Reference Circuit of GNSS Antenna

5.3. Antenna Installation

Requirements
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
VSWR: ≤ 2
Efficiency: > 30%
Max Input Power: 50 W
Input Impedance: 50Ω
Cable insertion loss: <1dB
64 / 93
LTE Module Series
EG91 Hardware Design