Application circuit, Power circuit, Application – GLOBALSAT ET-314 GPS Engine Board User Manual
Page 7: Application circuit power circuit, Gps power
ET-314AC
High Performance GPS Engine Board
2010/4/1
- 7 -
Application
Application Circuit
POWER Circuit
VIN
C2
10UF/16V
C3
470PF
U1
XC6209B332MRN 3.3V
VIN
1
GND
2
NC
4
CE
3
VOUT
5
C1
22UF/10V
GPS POWER
GPS_3V3
L1
BLM18AG121SN1D
GPS Active Antenna Specifications (Recommendation)
Frequency:
1575.42 + 2MHz
Amplifier Gain:
18~22dB Typical
Axial Ratio:
3 dB Typical
Output VSWR:
2.0 Max.
Output Impedance: 50Ω
Noise Figure:
2.0 dB Max
Polarization:
RHCP
Antenna Input Voltage: 2.85V (Typ.)