MA-25 is the integration of a high performance GPS patch antenna and a state-of-the-art low noise amplifier into a very low profile/ extremely compact/ fully waterproof enclosure which, when connected to a GPS receiver with 2.5~5.5V DC antenna power, provides excellent signal amplification and out-band filtering & rejection, 3V or 5V input Voltage is available.


FEATURES:

1.Compact Construction/ Low Profile
2.Fully Waterproof
3.Magnet and Screw Mount Base
4.Excellent Temperature Stability
5.Low Noise Figure
6.High Gain:28dB
7.Optional customized connectors


APPLICATIONS:

1. Automobile GPS
2. Bluetooth Receiver
3. Car Tracking Navigation System
4. AVL / Fleet Management Systems
5. External Antenna for Handheld GPS
6. External Antenna for PDA Navigator


SPECIFICATIONS:

Physical Condition
Construction:Polycarbonate- radome at top, die-cast shell at bottom/ rubber gasket for water seal in between
Dimension:46mm (L) x 38mm (W) x 12.5mm (H)
Weight:50 grams (excluding cable & connector)
Standard Mounting:Magnet mount with two magnets & screw mount
Optional Mounting Plate:customized metal sheet

Environmental Conditions
Operation temperature:-40°C to +85°C
Storage temperature:-40°C to +100°C
Relative Humidity:95% non-condensing

Cable & Connector
Cable:5 meter RG174/U (standard) cable, other length available
Pulling Strength:6 Kg @ 5sec with molded plastics on connector end for strain relief
Connector Available:BNC,TNC,FME (to be adapted), GT5, MCX (OSX), SMA, SMB or SMC in straight or right angle
Optional Adapters:Universal Connector Adapter (FME to TNC/BNC/SMA/SMB/MCX)

Antenna Element
Center Frequency:1575.42 MHz +/-1.023MHz
Polarization:R.H.C.P. (Right Handed Circular Polarization)
Gain @ Zenith:5.0 dB Typ.
Gain @ 10°:-1 dB Typ.
Axial Ratio:90°: 3 .0dB max.
Mounted on the 60mm x 60mm square ground plane
Bandwidth:10 MHz min. @S11£-10 dB

Low Noise Amplifier
Center Frequency:1575.42 MHz +/- 1.023 MHz
Gain:28 dB Typ.
Noise Figure:1.5dB Typ.
Filter:20dB 25dB @ fo+/- 50MHz
30dB 35dB @ fo+/- 100MHz
* fo=1575.42MHz

Supply Voltages:2.5 ~5.5V DC
Current Consumption:2.5V : 6.6mA Typ.
3.0V: 8.6mA Typ.
4.0V: 12.6mA Typ.
5.0V: 16.6mA Typ.
Output Impedance:50 ohm
Output VSWR:2.0 max.

Overall Performance ( Antenna Element, LNA & Cable )
Frequency range:1575.42 +/- 1.023 MHz
Gain:At 90° vertical to sky 30 +/- 4.5dBi (cable loss) Note:1
Output Impedance:50 ohm
VSWR:2.0 max.