Calian GNSS Ltd

Smart GNSS Antennas

Integrated GNSS antenna/receiver systems for Positioning, Navigation & Timing

Calian GNSS Smart Antennas combine cutting-edge antenna technology with integrated high-precision GNSS receivers, Inertial Measurement Units (IMUs), application processors and diverse digital interfaces to deliver flexible solutions that fit a broad swath of applications, from drones to smart agriculture to autonomous vehicles to subsidence sensors and even survey applications.

Cost competitive single band solutions provide excellent solutions for telematics and timing, and include IMUs to assist in satellite obstructed “deep urban canyon” scenarios or even 100% satellite obstructed situations such as parkades.

Dual-band high precision solutions incorporate advanced high precision GNSS receivers from partners such as u-blox, delivering the cm level precision required for autonomous driving applications and sensitive subsidence applications.

Base or Rover RTK capability, or u-blox PointPerfect PPP-RTK services combined with IMU’s, application processors and digital interfaces such as RS-232 or RS-422, transform GNSS challenges into a plug and play Positioning, Navigation and Timing resource, enabling you to focus on your application rather than the difficult problem of GNSS signal reception.

Get started on your application quickly by verifying performance with one of Calian’s Software Development Kits, which include Smart Antenna, TruPrecision evaluation/configuration software and bundle a 60 day trial of u-blox PointPerfect PPP-RTK service (where applicable).

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Helical Technology

Advanced helical antennas for low-SWaP PPP/RTK applications

Calian’s helical antennas are designed for SWaP (size, weight and power)-critical and high-performance applications such as UAVs. A precision-tuned helix antenna element delivers excellent gain and axial ratio over all elevation and azimuth angles, significantly minimizing multipath. Low-noise amplifiers (LNAs) with integrated low-loss pre-filters ensure high signal-to-noise ratios and excellent interference mitigation.

Being very light weight, and performing well without a ground plane, Calian’s helical antennas are ideal for UAV, unmanned systems precise point positioning (PPP), and real-time kinematic (RTK) applications.

The Helical antenna family features:

• Ultra-light weights ranging from 4 to 42 g
• Broad GNSS band coverages, including single, dual, triple, and full band options, with L-band correction service offerings
• Embedded versions and robust military-grade IP67-compliant plastic enclosed variants
• Certified Iridium options

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VeroStar™ Technology

Multi-GNSS & L-band antennas with exceptional low-elevation tracking

VeroStar™ antennas are designed to receive all GNSS signals as well as L-band correction services, supporting demanding and advanced applications for aerial, ground and marine robotics and autonomous vehicles.

Featuring a unique design with crossed-driven dipoles that are fed in quadrature and coupled to wideband radiating elements, VeroStar™ technology is ideal for RTK and PPP applications, delivering excellent low-elevation tracking, low axial ratio, and stable phase center.

VeroStar™ features include:

• Excellent radiating pattern with low roll off for exceptional tracking of low`-elevation GNSS and L-band signals
• High radiating efficiency for optimized signal-to-noise ratio
• Extremely stable phase centre variation (±2 mm)
• Excellent axial ratio for improved multipath rejection
• Innovative low-noise amplifier with superior out-of-band filtering
• Waterproof compact and IP69K-rated design

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Accutenna^® Technology

Multi-constellation and multi-frequency dual-feed patch antennas

Calian’s Accutenna® technology delivers industry-leading GNSS precision through patented dual-feed ceramic patch design. Optimized for multi-constellation and multi-frequency reception, Accutenna® offers superior multipath rejection and cross-polarization suppression, outperforming conventional single-feed antennas.
Ideal for RTK, PPP, and other high-accuracy GNSS applications, Accutenna® maintains a truly circular polarization across a wide bandwidth, enhancing positioning reliability in complex environments. The Accutenna® antenna family features:

• Dual-feed patch design for wideband circular polarization and low axial ratio
• Strong rejection of multipath and near-band interference via integrated pre-filters
• Coverage of upper and lower GNSS bands (GPS, GLONASS, Galileo, BeiDou, L-Band)
• Options for single and dual patch configurations for multi- frequency support
• Optimized performance for modern multi-GNSS receivers

Learn more: Unique dual-feed ceramic patch antennas

Anti-Jam Technology

Robust single-band anti-jamming antennas

Calian’s single-band (L1/G1/E1/B1) Accutenna anti-jamming technology modifies the antenna radiation pattern so that jammer signals arriving from an elevation angle of +15 to -10 degrees above and below the horizon are blocked. In addition, antenna gain is slightly increased at high elevation angles.

The robust anti-jamming antennas can mitigate ground- or near ground-based jamming signals that can saturate the antenna’s Low Noise Amplifier (LNA) and prevent legitimate satellite signals from being passed to the GNSS receiver.

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eXtended Filtering (XF) Technology

Enhanced filtering to mitigate RF congestion

Calian’s eXtended Filtering (XF) technology is designed to provide the cleanest possible GNSS and L-band corrections signals, mitigating interference from sources such as LTE and 5G, Iridium, Globalstar, and Inmarsat.

Calian eXtended Filter GNSS antennas feature high-linearity front-end amplifiers with additional pre-filters for each frequency band right at the antenna element feed, integrated with the diplexer for dual/triple-band antennas and with additional in-line filters.

XF filter technology is currently available in the TW3000 family, and will soon be available on all of Calian’s product lines.

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Applications

GNSS for AIS, Autonomous vessels, ECDIS, Ocean Mapping, and Smart buoys

Calian’s high-precision GNSS antennas are built for the harsh realities of maritime environments, delivering reliable, multi- constellation positioning for AIS, autonomous vessels, ECDIS, ocean mapping, and smart buoys.

With IP69K-rated waterproofing, full GNSS and Iridium support, and industry-leading multipath rejection via Accutenna® technology, they ensure accurate performance in challenging RF and weather conditions. Pre-filtered and embedded options offer flexibility for integration and interference mitigation.

Explore: GNSS for AIS, Autonomous vessels, ECDIS, Ocean Mapping, and Smart buoys

GNSS for Advanced Agricultural Machinery, Guidance Systems, and RTK Infrastructure

Calian’s high-performance GNSS antennas enable centimeter- level accuracy for precision agriculture, supporting advanced practices like variable-rate application and offset planting to boost yields, reduce input costs, and minimize environmental impact.

Designed for modern multi-constellation, multi-frequency receivers, Calian antennas deliver low phase center variation, excellent multipath rejection, and compatibility with L-band correction services. Options include rugged enclosures, magnetic or threaded mounts, embedded variants, and models calibrated to IGS and NGS standards.

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GNSS Antennas for Surveying, Mapping, RTK Rovers, and Geodetic Reference Stations

Calian’s high-performance GNSS antennas deliver the accuracy, stability, and signal integrity required for professional surveying, geodetic, and mapping applications using RTK, PPP, or hybrid methods across all modern GNSS constellations.

With exceptional multipath rejection, full multi-frequency support, and a range of compact to high-precision models, these antennas excel in challenging environments—from open skies to dense urban canyons.

Explore: GNSS Antennas for Surveying, Mapping, RTK Rovers, and Geodetic Reference Stations

GNSS Antennas for Precise Timing in Communications, Power, Financial, and Industrial Systems

Calian’s patented GNSS antennas deliver reliable, high- accuracy timing signals essential for synchronizing critical infrastructures such as communications systems, electrical power grids, and financial networks, leveraging multi-constellation support to ensure precise global time distribution.

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Anti-Jamming and Resiliency GNSS Antennas for Critical Infrastructure, Marine, and Defence Applications

Calian’s next-generation CRPAs offer compact, low-power, high-resilience GNSS protection with in-band null forming and extended filtering for uninterrupted, interference-mitigated positioning, navigation, and timing in challenging RF environments. Featuring dual low-noise amplifiers for redundancy, real-time jammer detection with directional reporting, and strong out-of-band rejection, these antennas enhance situational awareness and secure mission- critical GNSS operations.

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GNSS Antennas for UAVs & Drones

Calian’s high performance multi-constellation and multi-frequency antennas are designed with optimized SWaP (size, weight and power) footprints, making them ideal for both fixed-wing and rotary UAVs.

The company’s GNSS antennas have been used to provide precise positioning for a wide range of applications, including mapping and surveying, infrastructure inspection, and cargo delivery.

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GNSS Antennas for Autonomous Vehicles, UGVs & USVs

Calian’s cutting-edge GNSS antennas deliver the positioning accuracy and precision required for advanced autonomous vehicles operating both on land and at sea, with excellent multi-path rejection for superior performance in extremely challenging environments.

Use cases include autonomous delivery, self-driving vehicles, uncrewed marine survey vessels, and more.

Explore: GNSS antennas for Autonomous Vehicles, UGVs & USVs