GNSS four-arm helical antenna
High-performance GNSS quadrifilar helix antenna supporting multi-frequency signals including BDS B1/B2/B3, GPS L1/L2, GLONASS L1/L2, and Galileo E1/E5b. Features high gain, wide beam coverage, excellent phase center stability, and IP67 waterproof rating. Ideal for high-precision applications such as UAVs, autonomous vehicles, and precision agriculture.
Classification:
GNSS High-precision Positioning Antenna
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Product Description
GNSS Quadrifilar Helix Antenna
Multi-frequency high-precision antenna for centimeter-level positioning
Multi-Frequency Support
BDS B1/B2/B3, GPS L1/L2, GLONASS L1/L2, Galileo E1/E5b
High Gain & Wide Beam
Excellent low-elevation satellite reception
Stable Phase Center
Millimeter-level phase center stability
Robust Protection
IP67 waterproof, lightning & ESD protection
Product Overview
This advanced GNSS quadrifilar helix antenna supports multiple satellite systems including BDS, GPS, GLONASS, and Galileo across multiple frequency bands. With its high gain, wide beam coverage, and excellent phase center stability, it delivers superior performance for high-precision positioning applications. The antenna features a robust design with IP67 waterproof rating, lightning protection, and advanced filtering for reliable operation in challenging environments.
Key Features
Multi-Frequency Operation
Supports all major GNSS systems across multiple frequency bands
Excellent Phase Center Stability
Multi-feed design ensures millimeter-level phase center accuracy
Superior Low-Elevation Performance
Wide beam pattern with +2dB circularity at ≥20° elevation
Advanced Protection
Lightning and ESD protection circuits with overvoltage protection
Robust Construction
UV-resistant ABS+PC housing, IP67 waterproof rating
Advanced Filtering
Two-stage filtering effectively suppresses out-of-band interference
Technical Specifications
Antenna Parameters
| Frequency Range | GPS L1:1575MHz/L2:1227MHz/L5:1176MHz BDS B1:1561MHz/B2:1207MHz/B3:1268MHz GLONASS L1:1602MHz/L2:1246MHz Galileo E1:1575MHz/E5b:1207MHz |
|---|---|
| Peak Gain | ≥2.0dBi |
| Polarization | RHCP (Right Hand Circular Polarization) |
| VSWR | <1.5 |
| Impedance | 50Ω |
| Radiation Pattern | 360° azimuth coverage |
| Low Elevation Circularity | +2dB (elevation ≥20°) |
| Axial Ratio | <3dB |
LNA Parameters
| LNA Gain | 32.0 ± 2.0dB |
|---|---|
| Noise Figure | ≤2.0dB |
| Input VSWR | <2.0 |
| Output VSWR | <2.0 |
| Impedance | 50Ω |
| Differential Delay | ≤5nS |
| Operating Voltage | 2.8V - 12.0V |
| Operating Current | ≤10mA |
Environmental & Mechanical
| Operating Humidity | 95% |
|---|---|
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -45°C to +85°C |
| Dimensions | Φ27.5mm × 55.6mm |
| Connector | SMA-J |
| Weight | <20g |
| IP Rating | IP67 |
| Housing Material | ABS+PC (UV resistant) |
| Color | Black |
Applications
UAV & Drones
High-precision positioning and navigation for unmanned aerial vehicles
Precision Agriculture
Automated guidance systems for farming equipment
Autonomous Vehicles
Navigation and positioning for self-driving cars and robotics
Aerospace
Aviation and satellite communication systems
Surveying & Mapping
High-accuracy geodetic and construction surveying
RTK Systems
Real-time kinematic positioning with base stations
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