u-blox LEA-6 Series Hardware Integration Manual

LEA-6 / NEO-6 - Hardware Integration Manual
GPS.G6-HW-09007-A Preliminary Design-in
Page 32 of 62
2.5.3 Active antenna (NEO-6)
NEO-6 modules do not provide the antenna bias voltage for active antennas on the RF_IN pin. It is therefore
necessary to provide this voltage outside the module via an inductor as indicated in Figure 25. u-blox
recommends using an inductor from Murata (LQG15HS27NJ02). Alternative parts can be used if the inductor’s
resonant frequency matches the GPS frequency of 1575.4MHz.
Low Noise Amplifier
Active Antenna
RF_IN
VCC_RF
GND
GND
10
Ω
Figure 25: Recommended wiring for active antennas (for exact pin orientation see data sheet)
For optimal performance, it is important to place the inductor as close to the microstrip as possible. Figure 24
illustrates the recommended layout and how it should not be done.
GND
Microstrip
GND
RF
_IN
Antenna Supply Voltage
(e.g. VCC_RF)
Inductor L
GND
GND
Antenna Supply Voltage
(e.g. VCC_RF)
Inductor L
Microstrip
RF_IN
Good Bad
Figure 26: Recommended layout for connecting the antenna bias voltage for LEA-6M and NEO-6
Low Noise Amplifier
Active Antenna
RF_IN
VCC_RF
GND
GND
10 Ω
External
antenna
supply
voltage
Downloaded from DatasheetLib.com - datasheet search engine

u-blox LEA-6 Series Specifications

General

Brand	u-blox
Model	LEA-6 Series
Category	GPS
Language	English