High Performance 8 Elements Anti-Jam Module Dual Bands to Protect Navigation Signal
This eight-element anti-jam module protects satellite navigation across two frequency bands simultaneously, delivering 90dBc of single-direction interference suppression. Eight antenna elements give the adaptive array enough degrees of freedom to null up to seven separate interference sources at once, while dual-band operation closes the gap that single-band protection leaves open when an attacker shifts to the secondary frequency.
Dual-Band Protection
Coverage spans BeiDou B1, GPS L1, Galileo E1 and GPS L2. Protecting both the primary L1-class band and the L2 band matters because a receiver that loses one band can still be pushed into a degraded single-frequency solution, losing the ionospheric correction that dual-frequency operation provides. By defending both bands the module preserves full-accuracy positioning rather than merely keeping a coarse fix alive.
90dBc Interference Suppression
Single-direction interference rejection reaches 90dBc, which means a jammer arriving from a given bearing is attenuated by nine orders of magnitude relative to the wanted signal. That margin is what allows the receiver to keep tracking satellites at roughly -130dBm while a ground-based emitter is radiating orders of magnitude more power nearby. Suppression is achieved by adaptive nulling on direction of arrival, not by filtering, so it works against interference that occupies the same frequency as the satellite signal.
Why Eight Elements
An adaptive array can place one fewer independent null than it has elements, so a four-element unit handles three emitters and an eight-element unit handles seven. Defended sites rarely deploy a single jammer: airports, military installations and border zones typically operate several emitters covering different sectors and bands. Eight elements provide headroom for that environment while remaining a practical size and weight for airborne installation.
Interfaces and Integration
The module presents an SMA RF output and a D-sub connector for power and control, mounting through integral flanges on a flat surface. It substitutes for the existing passive GNSS antenna path, so the receiver and flight controller see a normal antenna feed and require no firmware changes. Customisation of band plan, connector arrangement and mounting geometry is available for integration programmes.
Key Features
- 8-element adaptive controlled reception pattern array
- Dual-band protection: BeiDou B1, GPS L1, Galileo E1, GPS L2
- 90dBc single-direction interference suppression
- Nulls up to 7 simultaneous interference sources
- Preserves dual-frequency accuracy, not just a coarse fix
- Effective against both jamming and coherent spoofing
- Direction-of-arrival nulling, works on co-frequency interference
- SMA RF output plus D-sub power and control connector
- Integral mounting flanges for flat-surface installation
- Drop-in replacement for passive GNSS antenna path
- No receiver or flight controller firmware modification
- Customisation available for band plan and mounting
Specifications
| Parameter | Value |
|---|---|
| Elements | 8 |
| Bands | BeiDou B1 / GPS L1 / Galileo E1 / GPS L2 |
| Band Configuration | Dual band |
| Single-Direction Interference Suppression | 90 dBc |
| Simultaneous Nulls | up to 7 |
| Antenna Principle | adaptive controlled reception pattern array |
| RF Interface | SMA |
| Control Interface | D-sub connector |
| Mounting | integral flanges, flat surface |
| Customization | Available |
| Threats Countered | jamming and spoofing |
| Product Type | navigation anti-jam module |
Applications
- Large UAV and VTOL platform navigation protection
- Flight operations inside contested electromagnetic environments
- Precision survey and mapping requiring dual-frequency accuracy
- Border area and checkpoint aerial patrol
- Critical infrastructure inspection near counter-UAS installations
- Military and government reconnaissance platforms
- Vehicle-mounted GNSS position and timing protection
- Fixed reference station protection
- GNSS receiver resilience testing and evaluation
Deployment Notes
Keep the array's upward field of view clear of payloads, landing gear and other antennas, since shadowing reduces satellite gain in exactly the directions the module needs to protect. Route the RF feed away from onboard transmitters to avoid self-interference. Where the expected threat is a single emitter, a four-element unit is lighter and lower cost; specify eight elements when several emitters cover different sectors.
Contact us for pricing and delivery:
WhatsApp: +86 13260128857
Telegram: @uaboron
Hot Tags: high performance 8 elements anti-jam module dual bands, China high performance 8 elements anti-jam module dual bands manufacturers, suppliers, factory
