Beitian BT-3707A RTK Differential High-Gain GNSS Antenna SMA-K IP67 for UGV/AGV, UAV, Marine Robot
Beitian BT-3707A RTK Differential High-Gain GNSS Antenna SMA-K IP67 for UGV/AGV, UAV, Marine Robot
Beitian
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Overview
Beitian BT-3707A is an RTK differential high-gain GNSS antenna designed for high-dynamic positioning and velocity measurement on moving platforms. This GNSS antenna uses a multi-feed design to align the phase center and geometric center, helping reduce measurement error impact in complex environments while maintaining compact size and low wind resistance.
Key Features
- Four-star, multi-frequency reception: BDS, GPS, GLONASS, Galileo, QZSS (bands listed in Specifications)
- Multi-feed design to reduce the impact of antenna-related measurement errors
- High-gain LNA for improved signal performance and support for longer cables
- Strong out-of-band suppression/anti-interference performance (as described)
- IP67 waterproof design
- High-temperature resistant plastic outer cover with insulated internal protection design
- 360° horizontal coverage angle
Specifications
| Model | BT-3707A |
| Connector / Joint model | SMA-K |
| Frequency range (supported signals) | BDS: B1I, B2I, B3I GPS: L1C/A, L2P (Y)/L2C, L5 GLONASS: L1, L2 Galileo: E1, E5a, E5b QZSS: L1, L2, L5 |
| Port / Output impedance | 50Ω |
| Polarization method | Right-handed circular polarization |
| Antenna gain | 3 dBi |
| LNA gain | 35 ±2 dB |
| Noise figure / Noise coefficient | ≤2 dB |
| Input VSWR | ≤2.0 |
| Output voltage standing wave ratio | ≤2 |
| Antenna axis ratio | ≤3 dB |
| In-band flatness | ±2 dB |
| Phase center error | ±2 mm |
| Horizontal coverage angle | 360° |
| Supply / Working voltage | 3.3V - 12.0V |
| Supply / Working current | ≤55 mA |
| Dimensions / Antenna size | Φ90 * 25.5 mm (excluding connectors/joints) |
| Weight | 130 g |
| Ingress / Waterproof level | IP67 |
| Operating / Working temperature | -55°C to +85°C (also listed as -40°C to +85°C) |
| Storage temperature | -55°C to +85°C |
| Working relative humidity | 95% |
Applications
- UGV and autonomous vehicles (including agricultural autonomous vehicles)
- Marine robots / unmanned ships
- UAV positioning applications
- Agricultural machinery and other high-speed mobile systems
- Navigation scheduling, tracking/monitoring, measurement and control
What's Included
- BT-3707A Antenna x1
For installation guidance or compatibility questions with RTK positioning modules/receivers, contact support via https://rcdrone.top/ or email [email protected].
Details
Built for high-dynamic RTK positioning, BT-3707A combines a compact radome with IP67 sealing for outdoor robotics.
Multi-constellation and multi-band reception supports stable RTK fixes across GPS, BDS, GLONASS, Galileo, and QZSS.
Strong out-of-band suppression helps reduce interference and lowers the risk of losing lock in complex RF environments.
The multi-feed design aligns phase center and geometry to help minimize antenna-related measurement error on moving platforms.
A low-profile 90×25.5 mm body and SMA-K interface make integration straightforward on UGVs, UAVs, and marine robots.
Designed for positioning, tracking, and control across UAVs, unmanned ships, agricultural machinery, and autonomous vehicles.
In the box: BT-3707A GNSS antenna (1 pc).
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