Telit Wireless Solutions ME910G1 Series User Manual

ME910G1 HW Design Guide
1VV0301593 Rev.3 Page 70 of 97 2020-03-24
GNSS Antenna Requirements
GNSS active antenna must be used or integrated in the application.
8.3.1. GNSS Antenna specification
Item
Value
Frequency range
1559.0 ~ 1610.0 MHz
Gain
20 ~ 30dB
Impedance
50 ohm
Noise Figure of LNA
< 1.5 (recommended)
DC supply voltage
DC 1.8 ~ 3.3V
VSWR
≤ 3:1 (recommended)
8.3.2. GNSS Antenna – Installation Guidelines
• The antenna must be installed according to the antenna manufacturer’s instructions to
obtain the maximum performance of GNSS receiver.
• The antenna location must be evaluated carefully if operating in conjunction with any
other antenna or transmitter.
• The antenna must not be installed inside metal cases or near any obstacle that may
degrade features like antenna lobes and gain.
8.3.3. Powering the External LNA (active antenna)
The LNA of active antenna needs a source of power because 1.8V or 3V DC voltage
needed by active antenna is not supplied by the ME910G1 module, but can be easily
included by the host design.
The electrical characteristics of the GPS_LNA_EN signal are:
Example of external antenna bias circuitry:
Level
Min [V]
Max [V]
Output High Level
1.6
1.9
Output Low Level
0V
0.3

Telit Wireless Solutions ME910G1 Series Specifications

General

Brand	Telit Wireless Solutions
Model	ME910G1 Series
Category	GSM/GPRS Modules
Language	English