Calian’s CR8894SXF+ GNSS Controlled Reception Pattern Antenna (CRPA) can mitigate/null one (1) interference or jamming signals in both the lower (1189 -1254 MHz) and upper (1559 – 1591 MHz) GNSS bands for a total of two (2) nulls. The CR8894SXF+ is a 4-element CRPA designed for dual-band Global Navigation Satellite System (GNSS) signal reception. It supports GPS L1/L2, Galileo E1/E5b, GLONASS G2/G3, and BeiDou B1/B2b signal bands. The wide bandwidth antenna elements also support GPS M-Codes on both L1 and L2.

Interference or jamming can saturate a standard GNSS antenna’s Low Noise Amplifier (LNA), making it unusable. Calian’s CR8894SXF+ uses two interference-mitigating technologies: eXtended Filtering+ (XF+) and Controlled Reception Pattern Antenna. XF+ features > 80 dB of out-of-band rejection from 400 MHz to 3000 MHz and separates the LNA’s upper and lower signal amplification channels, if one channel is jammed the other remains usable. CRPA technology creates radiation pattern nulls in the direction of the interference/jammer, preventing LNA saturation and ensuring a usable GNSS signal. The output is a standard RF signal with the interference removed and a signal that is compatible with all Commercial Off The Shelf (COTS) GNSS receivers.

The CR8894SXF+ uses Tallysman Accutenna® technology and a low-power analog interference detection and mitigation methodology. It integrates the antenna, null-forming, and interference mitigation technology into a compact, lightweight surface-mount enclosure. Two serial interfaces are provided: one supports RS232, the other RS422. These interfaces output NMEA messages that contain jamming detection, mitigation status, jammer band, and direction relative to the antenna, enhancing situational awareness.

The lightweight, waterproof (IP67) rugged enclosure withstands harsh conditions, including military, drone, and vehicle applications. The CR8894SXF+ CRPA is surface-mounted using four screws. A standard RF connector (SMA or TNC) and serial interface connectors are centrally located, properly sealed to prevent water ingression.

A future version of CR8894SXF+ antenna will support three (3) nulls per band.

Trust Calian to provide a clean RF signal in a noisy RF world.

Why Choose the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA)?

• Dual band GNSS signal support

• Supports eXtended Filtering+ (XF+) providing sharp out-of-band signal rejection

• Up to 20-40 dB null depth

• Serial interface provides state information and estimated jammer direction

• IP67 water proof housing

Benefits of the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA)

• Compatible with standard GNSS receivers

• Very low power consumption (150 mA)

• Small, lightweight, and low-profile form factor makes it ideal for many uses

• Supports situational awareness, indicates CRPA state: jamming observed/mitigated, frequency, and direction

What Is the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA) Used For?

• Critical Timing

• Navigation in contested environs

• Critical Infrastructure GNSS (airports, etc.)

• Law enforcement and public safety

Frequently Asked Questions

What is the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA)?

Calian’s CR8894SXF+ GNSS Controlled Reception Pattern Antenna (CRPA) can mitigate/null one (1) interference or jamming signals in both the lower (1189 -1254 MHz) and upper (1559 – 1591 MHz) GNSS bands for a total of two (2) nulls. The CR8894SXF+ is a 4-element CRPA designed for dual-band Global Navigation Satellite System (GNSS) signal reception. It supports GPS L1/L2, Galileo E1/E5b, GLONASS G2/G3, and BeiDou B1/B2b signal bands. The wide bandwidth antenna elements also support GPS M-Codes on both L1 and L2.

Where is the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA) available?

The CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA) is available through Leo Drive in the following region: Turkey. For other regions, please contact Leo Drive.

How can I get the datasheet and technical specifications for the CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA)?

Calian supplies the datasheet for this antenna on request rather than as a public download. Please contact Leo Drive and we will arrange it, along with ordering options and integration support.

Explore More at Leo Drive

The CR8894SXF+ Anti-Jamming Four Element Controlled Reception Pattern Antenna (CRPA) is part of the GNSS Antennas range at Leo Drive. Browse all autonomous vehicle sensors and components, or talk to our engineering team about integration in your project.