JS-HAC41A
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JS-HAC41A
UAV / Helical Antennas
The JS‑HAC41A is a multi‑constellation, full‑band high‑precision helical antenna designed for GNSS applications. It covers GPS, BDS, GLONASS, and Galileo signals, offering excellent low‑elevation gain, wide‑angle circular polarisation, and a stable phase centre. With its integrated LNA and compact form factor, it is well suited for UAVs, surveying and mapping, aerial photography, navigation dispatching, disaster monitoring, and container terminal operations.
Full-Band Multi-Constellation
Covers GPS (L1/L2/L5), BDS (B1I/B2I/B3I), GLONASS (G1/G2/G3), Galileo (E1/E5a/E5b/E6).
Stable Phase Center & Low-Elevation Gain
Excellent low-elevation gain and stable phase center for high-precision applications.
360° Omnidirectional Coverage
Wide-angle circular polarization with 360° horizontal coverage for reliable signal tracking.
High-Gain LNA & Low Noise
LNA gain 32±2dB, noise figure ≤2dB, output VSWR ≤2.0 for clear signal reception.
Compact & Lightweight Design
Overall dimensions Φ45±0.5 × H69.2±0.5mm, weight ≤70g (including cable).
Plug-and-Play & Anti-Interference
Simple installation with anti-interference circuit design, SMA connector, and RG316 cable.
JS-HAC41A
Multi-Constellation Full-Band Helical Antenna
JS-HAC41A is a multi-constellation, full-band high-precision antenna that covers BDS, GPS, GLONASS, and Galileo. It features excellent low elevation gain, wide-angle circular polarization, and stable phase center.
The module is easy to install, offers outstanding performance, and is suitable for multi‑system, high‑precision surveying and mapping applications.
It is widely used in unmanned aerial vehicles (UAVs), surveying and mapping, aerial photography, navigation dispatching, disaster monitoring, and container terminal operations.
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Key Features
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Full-Band Multi-Constellation Covers GPS (L1/L2/L5), BDS (B1I/B2I/B3I), GLONASS (G1/G2/G3), and Galileo (E1/E5a/E5b/E6).
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Stable Phase Center & Low-Elevation Gain Excellent low-elevation gain with stable phase center for high-precision positioning.
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360° Omnidirectional Coverage Wide-angle circular polarization with 360° horizontal coverage for no-blind-spot tracking.
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High-Gain LNA & Low Noise LNA gain 32±2dB, noise figure ≤2dB, output VSWR ≤2.0 for superior signal quality.
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Compact & Lightweight Overall dimensions Φ45±0.5 × H69.2±0.5mm, weight ≤70g (including cable).
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Plug-and-Play & Anti-Interference Anti-interference circuit design, SMA connector, simple installation without debugging.
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Technical Specifications
Antenna RF Performance
| Antenna Type | Multi-Constellation Full-Band Helical Antenna |
| Supported Signals | GPS L1/L2/L5; BDS B1I/B2I/B3I; GLONASS G1/G2/G3; Galileo E1/E5a/E5b/E6 |
| Impedance | 50Ω |
| Polarization | Right-hand circular polarization (RHCP) |
| Horizontal Coverage | 360° |
| Antenna Output VSWR | ≤1.5 |
| LNA Gain | 32±2dB |
| Noise Figure | ≤2dB |
| LNA Output VSWR | ≤2.0 |
Electrical & Mechanical
| Operating Voltage | +3.3 ~ 12V |
| Operating Current | ≤45mA |
| Dimensions | Φ45±0.5 × H69.2±0.5mm |
| Weight | ≤70g (including cable) |
| Connector Type | SMA-J internal thread inner pin (customizable) |
| Cable | RG316 / 500mm (length customizable) |
| Operating Temperature | -40℃ ~ +80℃ |
| Storage Temperature | -55℃ ~ +85℃ |
| Humidity | 0% ~ 95% non-condensing |
| Compliance | RoHS |
Typical Applications
Surveying and Mapping
High-precision surveying & mapping applications
Navigation Dispatching
Vehicle & fleet navigation dispatching systems
Lightweight UAVs
UAV positioning & aerial survey applications
Geographical Measurement
Geographic data collection & measurement
Traffic Patrol
Traffic monitoring & patrol systems
Public Security Monitoring
Security surveillance & public safety systems
Disaster Monitoring
Disaster early warning & emergency response
Remote Telemetry
Remote data collection & telemetry systems
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