MaîtreAnchor AOA+TWR
Single-Anchor 2D Positioning Network Gateway Combining Angle-of-Arrival & Two-Way Ranging (Model FM-MA-AOA)
Top-Mounted Phased Antenna Array
Integrated Diagnostic OLED Display
Overview & Principle of Operation
MaîtreAnchor AOA+TWR is a specialized UWB base station in an impact-resistant ABS enclosure capable of determining the 2D polar coordinates (r, θ) of MaîtreBadge and MaîtreTag devices from a single mounting point—without requiring overlapping coverage from 3–4 neighboring anchors.
A vertical half-wavelength (λ/2) dual-element phased antenna array is mounted on top of the housing. On each UWB frame exchange, the gateway simultaneously measures radial distance r via Dual-Sided Two-Way Ranging (DS-TWR, ±10–15 cm accuracy) and azimuth angle θ via carrier Phase Difference of Arrival (PDoA / AoA, < 3° accuracy across a ±60° sector).
- Replaces 3–4 Conventional Anchors: Purpose-built for narrow corridors, underground mine drifts, conveyor galleries, and hazardous machine safety gates.
- On-Site Diagnostics: Built-in OLED display shows network and server status, so installers can commission the anchor without a laptop.
- Flexible Power & Backhaul: 2.4 GHz Wi-Fi or Ethernet; 5 V USB Type-C power or optional PoE.
- Hybrid Interoperability: Operates standalone or seamlessly alongside MaîtreAnchor TDoA gateways in open factory bays.
Technical Parameters — MaîtreAnchor AOA+TWR
| Parameter | Specification |
|---|---|
| Product Identification & Positioning Performance | |
| Model | FM-MA-AOA |
| Positioning Methods | Dual-Sided Two-Way Ranging DS-TWR (15.65 ps timer resolution, ±10–15 cm ranging accuracy) + Phase Difference of Arrival PDoA / AoA (< 3° angular accuracy within a ±60° / 120° Field of View) |
| Radio Frequency (RF) Characteristics & Network | |
| UWB Interface (IEEE 802.15.4-2015 / 802.15.4z) | Operating frequencies: 6489.6 MHz (Channel 5) / 7987.2 MHz (Channel 9), 499.2 MHz bandwidth, EIRP spectral density ≤ -41.3 dBm/MHz. Dual-element phased antenna array |
| Wi-Fi Network Interface | IEEE 802.11 b/g/n, 2412–2472 MHz, maximum output power (EIRP) ≤ 20 dBm (100 mW) |
| Ethernet Interface | Wired Ethernet, optional PoE (IEEE 802.3af/at) |
| Bluetooth Interface | Bluetooth Low Energy 5.0, 2402–2480 MHz, output power up to +4 dBm (2.5 mW) |
| Diagnostics & Power Supply | |
| Diagnostic Display | Integrated top-panel OLED display: model, HWID, IP address, server connection status, uptime, current UWB channel, and number of active tags |
| Power Supply | 5 V DC via USB Type-C (up to 250 mA, ≤ 1.25 W) or PoE (IEEE 802.3af/at, optional, ≤ 2.5 W) |
| Mechanical Parameters & Security | |
| Dimensions & Weight | Main body: 86 × 46 × 38 mm (including side mounting flange) + 37 mm vertical antenna radome. Weight: 68 g (up to 95 g with PoE module) |
| Enclosure | Impact-resistant ABS housing; side mounting flange with two Ø4 mm screw holes |
| Optional Encryption | When enabled, UWB STS, Bluetooth, Wi-Fi, and Ethernet links are encrypted; can be disabled for non-cryptographic operation |
Device Mounting & Orientation Guidelines (AoA)
1. Bore-Sight Alignment (±60° FoV)
- Align the broadside axis of the top vertical antenna blade along the centerline of the monitored corridor, tunnel, or safety gate.
- Provides high-precision azimuth tracking across a ±60° horizontal sector (120° total FoV) at ranges up to 40–60 m.
2. Polarization Matching
- Mount the gateway with the phased-array blade oriented vertically so its polarization matches vertically worn MaîtreBadge and MaîtreTag devices.
3. Phase-Front Clearance
- Secure the housing via the two Ø4 mm flange holes at a height of 2.5–4.5 m.
- Keep the ±60° cone free of metallic pipes, wire mesh, or cable trays within 30 cm of the antenna blade to preserve carrier phase integrity.
Need Single-Anchor 2D Tracking for Corridors or Safety Zones?
Contact our engineering team to configure MaîtreAnchor AOA+TWR for your facility.
Contact Engineering Team