BNT8AT 8-element anti-jamming antenna supports GPS L1 & GLONASS G1, blocks 7 jammers, 110dB J/S, 1.5m accuracy, 8-34V, ≤19W.
The BNT8AT 8-element anti-jamming antenna is a compact dual-system module built for UAVs and ground platforms operating near hostile RF sources. It uses an eight-element array to create up to seven spatial nulls, suppressing jammers while maintaining GPS L1 and GLONASS G1 reception. The entire RF chain—antenna array, anti-jamming processor, and navigation receiver—fits in a 150 mm × 150 mm × 22.5 mm housing weighing under 720 g.
The core strength of this 8-element anti-jamming antenna lies in its array geometry. With eight elements, the processor forms nulls toward interfering directions while preserving the satellite signals. Single-tone jammer-to-signal ratio reaches at least 110 dB. With three simultaneous interferers, J/S stays above 100 dB, and with seven active jammers, it remains above 90 dB. The module rejects narrowband, broadband, pulsed, swept, and Gaussian jamming on both GPS L1 (1575.42 MHz ±10.23 MHz) and GLONASS G1 (1602 MHz +13.5 MHz). Continuous-wave tolerance is 10 W minimum, and the supply line includes overvoltage protection.
Unlike multi-constellation arrays that sacrifice size, the BNT8AT focuses on GPS L1 and GLONASS G1 for users who need proven dual-system availability. The built-in receiver outputs either UBX or NMEA 0183 protocol, selectable by the host. For flight controllers, a TTL serial port carries position, velocity, and time data directly. For external receivers, an SMA RF port provides combined L1/G1 signals at −70 to −60 dBm. Use one path at a time—serial or RF—to avoid conflicts. The J30J-9ZK connector also includes a dedicated upgrade UART for field firmware updates.
The 8-element anti-jamming antenna runs from an 8–34 V DC input through an XT30 connector, with maximum draw of 19 W. That wide input range suits both 3S–8S drone batteries and vehicle power rails. The light gray housing mounts with M3 screws and measures only 150 mm × 150 mm × 22.5 mm. Operating temperature extends from −40 °C to +70 °C, storage from −45 °C to +85 °C, and the module withstands 96% humidity at 40 °C. Rain exposure meets GJB150A, and mean time between failures is 3000 hours.
Positioning accuracy is ≤1.5 m horizontal in clean conditions and ≤10 m under active jamming. Velocity error stays ≤0.2 m/s, and timing stays ≤100 ns at 95%. These numbers make the BNT8AT practical for timing security in power, telecom, and finance, as well as navigation safety for UAVs, UGVs, and USVs. Convoy defense and high-end logistics also benefit from the seven-null suppression. Connect the supplied TTL lines to your flight controller: TX to RX, RX to TX, GND to GND. For RF mode, use an SMA cable to the receiver antenna port, but ensure that port does not feed more than 5 V back into the module. USB-TTL tools should not be hot-plugged.
The 8-element anti-jamming antenna replaces a standard active antenna or separate anti-jam board, saving integration time and reducing cable loss. If your platform needs clean GPS/GLONASS PNT under broadband or swept jamming, the BNT8AT delivers without the bulk of rack-mount equipment.
For system references, visit the GPS L1 interface and GLONASS interface control.
| TITLE | SIZE |
|---|---|
| BNT8AT-ENZX.pdf |
| Parameter | Value | Note |
| Constellation support | GPS L1 / GLONASS G1 | Dual system |
| Array elements | 8 | Spatial nulling |
| Max simultaneous jammers | 7 | Seven nulls |
| Single-tone J/S | ≥110 dB | One jammer |
| Three-tone J/S | ≥100 dB | Three jammers |
| Seven-tone J/S | ≥90 dB | Seven jammers |
| Positioning accuracy (clean) | ≤1.5 m horizontal | 95% |
| Positioning accuracy (jammed) | ≤10 m | Under interference |
| Velocity accuracy | ≤0.2 m/s | 95% |
| Timing accuracy | ≤100 ns | 95% |
| Input voltage | 8–34 V DC | XT30 |
| Power consumption | ≤19 W | Typical |
| Dimensions | 150 mm × 150 mm × 22.5 mm | Square |
| Weight | ≤720 g | Module |
| RF output level | −70 to −60 dBm | L1/G1 |
| Operating temperature | −40 °C to +70 °C | Ambient |
| MTBF | 3000 hours | Estimated |
