Canadian positioning sensor developer Calian GNSS has launched two advanced antenna solutions designed for precision navigation applications: the HC3990XF housed full-band helical antenna and the next-generation Accutenna 4 antenna family, with the latter showcased at Intergeo 2025.
HC3990XF Technical Specifications
The HC3990XF helical antenna measures 66.5 mm in base diameter, 34 mm in height, and weighs just 105 grams. The antenna requires no ground plane, making it ideal for size-constrained applications. It supports comprehensive constellation coverage including GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b/E6, BeiDou-B1/B2a/B2b/B3, and NavIC-L5 frequency bands, plus regional SBAS services.
The antenna features Calian’s eXtended Filtering technology, providing mitigation against LTE interference including Ligado service signals (1526-1536 MHz), European Band 32 (1452-1496 MHz), and Japanese Bands 11 and 21 (1476-1511 MHz). Standard through-hole design supports TNC, Type N, and cabled connectors.
Accutenna 4 Family Features
The Accutenna 4 series utilizes a stacked composite patch antenna element with quad-feed design at half the weight of major competitors. The embedded version weighs 85 grams and provides full GNSS band coverage supporting GPS, Galileo, BeiDou, GLONASS, SBAS, and correction services. The advanced four-feed design minimizes multipath interference while maintaining stable phase center performance for centimeter-level accuracy.
Available mounting options include embedded, pole, surface, and through-hole configurations. The antenna integrates eXtended Filtering technology for interference rejection in crowded RF environments.
“GNSS users need full band antennas they can trust to deliver clean signals in real-world environments,” said Ken MacLeod, Director of Product Management. “The Accutenna 4 family brings together precision, durability and adaptability in four packages: embedded, pole, surface and through hole mounts, empowering customers in surveying, autonomy, agriculture and more”.
Both antenna families target applications including UAV navigation, precision agriculture, surveying, and autonomous systems where weight, size, and RF interference rejection are critical performance factors.
More information on Calian’s suite of GNSS antennas is available here.
About Calian GNSS
Based in Ottawa, Canada, Calian GNSS is focused on high-precision GNSS and Iridium antenna design and manufacturing. Calian GNSS is known for its Accutenna, VeraPhase, VeraChoke, VeroStar and Helical antenna innovations. These technologies have provided accuracy and precision that exceed customer expectations.
INTERGEO
With drones playing a growing role in everything from climate resilience to infrastructure management, INTERGEO 2025 demonstrates how unmanned systems are no longer peripheral—they are central to geospatial work. For attendees, the show offers an opportunity to see the latest platforms, connect with global innovators, and hear directly from experts shaping the future of drone operations.
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Ian McNabb is a journalist focusing on drone technology and lifestyle content at Dronelife. He is based between Boston and NH and, when not writing, enjoys hiking and Boston area sports.
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