A-131 GPS Antennas
Introduction
A-131 GPS Antennas is a performance GPS antenna with power and RF signal protection built-in to protect the active Low Noise Amplifier (LNA) and the host GPS receiver at the connector end from danger of shorting, (GPS receiver front-ends can be destroyed or de-graded by external antennas over-loading or shorting). The RF signal protection shield on the bottom cuts out noise and provides a more accurate signal. A-131 GPS Antennas is designed for multi-purpose integration applications such as GPS tracking products etc. The antenna is designed for standard power input voltages ranging from 3V~6V with reverse polarity shutdown, over-current sense shutdown and EMC power line suppression. And, like all the other ARKNAV antennas, A-131 GPS Antennas is made with high quality double-shielding cable and silver coated conducting pin, and meets RoHS directives.
Features
A-131 GPS Active Antennas is the only innovating design antenna with performance,
quality and a Power protection circuit built-in to protect the active LNA’s, and most
importantly the host GPS receiver down the connector end from the danger of a
SHORT circuit external antenna (Note: GPS receiver front-end can be destroyed or
de-graded by an external GPS antenna in an over-load or short conditions. The A-131
is a low profile GPS active antennas system for the next generation multi-purpose
GPS mobile antenna products for Telematics, Fleet Management, Navigations and
AVL applications. This small print size of the antenna design does not reflect over-all
performance, since the antenna itself needs no ground plane aid to deliver the L1
band small signal carrier that originates from the 24 orbiting USA satellites located
thousands of miles over-head and with the ground reception power sensitivity at over
-130dB. The A-131 GPS Active Antennas is also design as a standard power input
voltages in range from +3Vdc to +6Vdc with reverse polarity shutdown, over-current
sense shutdown and an EMC power line suppression. The most important over-all
design concept of the A-131 GPS Active Antennas is the complete protections of the
host sensitive GPS receiver made from any manufacturer that it serve and can also
be destroy or de-grade using an improper design antenna.
Specification
| General |
| 2 Stages active LNA |
| Dual Filters, (HPF & LPF(lump element)) |
| +28dB gain |
| Dielectric Patch antenna |
| Low Noise Low drop-out, Linear Regulator |
| GPS receiver short circuit protect |
| Low Loss RG/174 Coax cable |
| Aluminum Base/ PC+ Radome Plastic |
| Performance |
| Receiving Frequency |
L1 Band(1575MHz) |
| Output Impedance |
50 ohms |
| Polarization’s |
Right Hand Circular (RHC) |
| Bandwidth |
10dB Mhz @ -3dB point |
| VSWR |
1.5 Typical @ 1575MHz |
| Elev. Angle Coverage |
5~90 degree |
| Az. Bearing Coverage |
360 degree |
| Filtering |
Dual(BPF <10 Mhz B/W, LPF @1576 MHz Stop-band @ 1585MHz) |
| Over-all Gain |
28dB (typical including 4dB cable loss & Filters) |
| Over-all NF |
<1.8dB @fo, 2dB max. |
| LNA Characteristic |
K=>1 Un-conditionally Stable |
| RF Insertions loss |
K=>0.1dB, leakage power 100mW /1 watt input |
| Power Consumption |
11mA to 13mA (max) |
| Power Input Sensor |
Reverse Polarity Short Circuit shutdown |
| Over-Current Sensor |
Thermal Over-current shutdown >+150degreeC |
| Electrical |
| Power Input |
+3Vdc to + 6Vdc input, Auto Switching |
| Physical |
| Dimensions |
31 x 24.5 x 7mm +/-0.5mm |
| Mount |
Magnetic |
| Radome Color |
No |
| Coax Connector |
BNC, SMA, SMB, MCX, MMCX, GT-5 |
| Coax Cable |
RG-174U double shielded 5m, Low Loss 0.7dB/m |
| Environmental |
| Operating Temperature |
-30 to + 85 degree C |
| Storage |
-40 to + 90 degree C |
| Optional |
| 1. Open Frame Antenna , with RF shield |
| 2. Open Frame with 3” Flanges & RF shield |
| 3. Ant + Aluminum Base |
Documentation