Precision GNSS Performance in Challenging RF Environments
Calian AC4990PXF Multi-Constellation GNSS Antenna
The Calian AC4990PXF is a high-precision, multi-constellation GNSS antenna designed to deliver reliable positioning across a broad range of satellite navigation signals. Featuring Accutenna® 4 quad-feed technology, the antenna provides excellent multipath rejection, a low axial ratio, and tight phase centre stability to support demanding applications where positioning accuracy is critical.
As the RF spectrum becomes increasingly congested, interference from LTE, satellite communications, and other out-of-band signals can compromise GNSS receiver performance. Calian's custom XF filtering is engineered to mitigate existing and emerging interference, including Ligado and LTE signals, helping prevent antenna saturation and maintain reliable signal reception. Housed in a rugged, weatherproof enclosure with a metallic base, integrated rubber bumper, and 5/8-inch mounting hole, the AC4990PXF is suited for permanent installations in demanding environments.
Calian AC4990PXF Key Features:
Full-band, multi-constellation GNSS support for GPS, QZSS, GLONASS, Galileo, BeiDou, and NavIC, with regional SBAS and L-band correction services
Accutenna® 4 quad-feed technology with low axial ratio (< 1.0 dB typical)
Tight phase centre variation (≤ 2 mm from zenith to 15° above the horizon)
Low-noise preamplifier (2.5 dB typical) and high-gain LNA (30 dB typical)
Custom XF filtering to mitigate out-of-band interference and help prevent GNSS antenna saturation
Low current consumption (17 mA typical) and operation from 2.5 to 16 VDC
ESD protection rated at 15 kV
Rugged metallic base, integrated rubber bumper, and weatherproof enclosure for permanent installations
CE RED, RoHS, and REACH compliant
Calian AC4990PXF Key Applications:
High-precision GNSS systems
Marine navigation
Autonomous vehicle navigation and guidance (land, sea, and air)
Precision agriculture
Land survey rovers
RTK/PPP systems
GNSS reference networks
The Calian AC4990PXF combines full-band GNSS coverage, advanced interference mitigation, and stable phase centre performance for high-precision positioning applications. Contact info@Braemac.com to learn more.
