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AX04B GNSS anti-jamming CRPA antenna 8-array 7-nulling

AX04B GNSS Anti‑Jamming CRPA System | 8‑Array Multi‑Jam Protection

AX04B 8‑array GNSS anti‑jamming CRPA system, ultra‑compact, lightweight, multi‑platform compatible for critical mission navigation.

Model Specifications

Ant-jamming Parameters

Dimensions (mm) 160×160×35
Weight (g) < 770
Power Consumption (w) < 25 W
Antenna Array 8 Array CRPA Antenna
Simultaneous Independent Nulling 7
Simultaneous Active Bands GPS L1/GALILEO E1/BEIDOU B1
Nominal Wideband Suppression > 95 dB J/S performance based on performance of typical GPS receivers, in the presence of 7 spatially diverse broadband jammers
Connectors 1x SMA Female, J30J 21-pin Socket
Operating Voltage 12 V DC
Operating Temperature -40 °C to +70 °C
Data Interfaces Serial
  • Export documentation support
  • Bulk orders & stable lead time
  • After-sales & spare parts support
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Description

1. General Description

AX04B Anti-Jam CRPA System supports critical missions by providing jam free GNSS signals.

With an 8-array CRPA antenna, the system can assure the normal operation of GNSS receiver in presence of multiple jamming sources.

AX04B Anti-Jam CRPA System can be employed using various configuration and operates with civil and military GPS receivers for the land, sea, air platforms (including unmanned aerial systems) and fixed installations. The product has an embedded GNSS receiver that supports all satellite constellations.

2. How It Works

AX04B mitigates interference by creating nulls in the antenna gain pattern in the direction of jammers, providing significant anti‑jam protection even in dynamic multi‑jammer scenarios. The output is a protected standard Radio Frequency (RF) signal, free from jamming and suitable for input to modern and legacy GNSS receivers.

3. Key Benefits

  • Immediate availability for urgent operational needs
  • Simple assembly means easy to install or retrofit
  • Compatible with all types of external GPS receivers and vehicle navigation systems
  • Minimal integration training required
  • Light Weight
  • Ultra Compact Size
  • Superior Suppression Performance

4. Application Areas

  • Fixed Winged Aircraft
  • Rotary Wing Aircraft
  • Unmanned Autonomous Systems
  • Armored Vehicles
  • Naval Platforms, Coast Guard Platforms

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FAQ

What is the main function of the AX04B Anti-Jamming Antenna?

The AX04B is an 8-array CRPA anti-jamming antenna that suppresses GNSS interference via spatial filtering, creates nulls toward jamming sources, and outputs clean standard RF signals for GNSS receivers, ensuring stable navigation in multi-jammer environments.

How many simultaneous jammers can the AX04B suppress?

The AX04B is equipped with an 8-array CRPA design, which can create up to 7 simultaneous independent nulls, effectively suppressing up to 7 spatially diverse broadband jammers at the same time.

What is the J/S suppression performance of the AX04B?

The AX04B delivers superior anti-jamming performance with a J/S suppression ratio of >95 dB, maintaining reliable signal reception even in harsh jamming environments.

Which GNSS constellations and receivers is the AX04B compatible with?

The AX04B supports GPS L1, Galileo E1, and BeiDou B1 satellite constellations, and is fully compatible with all types of civil and military GNSS receivers, as well as vehicle navigation systems.

What platforms and application scenarios is the AX04B suitable for?

The AX04B is widely used in fixed-wing aircraft, rotary-wing aircraft, unmanned autonomous systems (UAS), armored vehicles, naval platforms, coast guard platforms, and other land, sea, air navigation scenarios.

What are the key physical and electrical parameters of the AX04B?

The AX04B has a compact size of 160×160×35mm, a weight of <770g, operates on 12V DC power, has a power consumption of <25W, and an operating temperature range of -40℃ to +70℃.

What type of output signal does the AX04B provide?

The AX04B outputs a protected standard Radio Frequency (RF) signal that is completely free from jamming and interference, which is suitable for direct input to both modern and legacy GNSS receivers.