Key specifications include:
Frequency Range: GPS 1575.42 MHz / BDS 1561.098 MHz
Gain: 28 dBi (typical)
VSWR (Voltage Standing Wave Ratio): ≤ 2.0
Operating Temperature: -40°C to +85°C
Cable: RG174 Coaxial, 5 meters
This article explores the design, functionality, and applications of this GNSS antenna in fleet management systems.
2.1 Connectivity: Blue FAKRA Female Connector (50Ω)
The FAKRA (Fachkreis Automobil) connector is an automotive-grade RF connector widely used in vehicle telematics and navigation systems. The Blue FAKRA Female Connector (50Ω impedance) ensures low signal loss and high-frequency stability, making it ideal for GNSS applications.
Key Advantages:
Standardized Color Coding: The blue connector helps in quick identification and correct installation.
Secure Locking Mechanism: Prevents accidental disconnections due to vibrations in moving vehicles.
EMI/RFI Shielding: Minimizes interference from other electronic devices in the vehicle.
2.2 Material: ABS Housing
The antenna’s housing is made of Acrylonitrile Butadiene Styrene (ABS), a durable thermoplastic known for:
High Impact Resistance: Protects internal components from mechanical shocks.
Weatherproof Properties: Resists UV radiation, moisture, and extreme temperatures.
Lightweight Design: Reduces unnecessary weight in vehicle installations.
2.3 Polarity: Linear
The linear polarity configuration ensures compatibility with standard GNSS receivers. Unlike circular polarity antennas, linear antennas provide higher gain and better directional sensitivity, which is crucial for fleet tracking applications.
2.4 Frequency Range and Signal Reception
The antenna supports:
GPS L1 Band (1575.42 MHz)
BDS B1 Band (1561.098 MHz)
This dual-band support allows seamless operation in regions where both GPS and BeiDou signals are available, improving positioning accuracy.
2.5 Gain and VSWR Performance
Gain: 28 dBi (typical) – Ensures strong signal reception even in weak signal areas.
VSWR ≤ 2.0 – Indicates efficient power transfer with minimal signal reflection.
2.6 Temperature Resilience
Operating Temp: -40°C to +85°C
Storage Temp: -40°C to +85°C
This wide temperature range ensures reliable performance in extreme climates, from freezing winters to scorching summers.
2.7 Cable: RG174 Coaxial (5 meters)
The RG174 coaxial cable offers:
Low Signal Attenuation – Maintains signal integrity over long distances.
Flexibility – Easy routing inside vehicles without signal degradation.
Shielded Design – Reduces electromagnetic interference (EMI).
3.1 Real-Time Vehicle Tracking
Fleet operators rely on GNSS antennas for:
Live Location Updates – Monitor vehicle movements in real-time.
Route Optimization – Reduce fuel consumption and improve delivery efficiency.
Geofencing Alerts – Notify managers when vehicles enter or exit predefined zones.
3.2 Driver Behavior Monitoring
By integrating GNSS data with telematics systems, fleet managers can track:
Speed Violations
Harsh Braking/Acceleration
Idling Time
This data helps in improving driver safety and reducing operational costs.
3.3 Theft Prevention and Recovery
Stolen Vehicle Tracking – Authorities can locate stolen vehicles using GNSS signals.
Immobilization Features – Some systems allow remote engine shutdown.
3.4 Compliance with Regulatory Standards
Many regions mandate Electronic Logging Devices (ELDs) for commercial vehicles. A high-performance GNSS antenna ensures compliance with:
FMCSA (Federal Motor Carrier Safety Administration) regulations (USA)
EU ECall (Emergency Call) requirements
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