GLOBALSAT ET-314 GPS Engine Board - Manual (Page 7)

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.)