CES Las Vegas 1月 05, 2027

World's first 802.15.4ab-UWB chip verified by Calterah and Rohde & Schwarz to be demoed at CES 2026

Calterah, a global leader in chip design for CMOS single-chip millimeter-wave radar sensors, together with Rohde & Schwarz, a world-leading company in test and measurement, has successfully demonstrated its next-generation solution for digital car keys based on the Dubhe-UWB-SoC chip (Ultra-Wideband; System-on-Chip). This is the world’s first UWB chip to fully comply with the new IEEE 802.15.4ab standard. For the first time, the industry presents at CES 2026 a complete ecosystem for the new technology, combining state-of-the-art standards, advanced chip technology, and official verification.

At the heart of the innovation is the Dubhe-UWB-SoC series. It is the world’s first UWB-SoC chip featuring an architecture with two transmit and four receive channels (2T4R), integrating positioning and radar functions into a single SoC. The use of BLE-Assisted-MMS technology (Bluetooth Low Energy-Assisted Multi-Millisecond) is key for wireless distance measurement, offering greater range, higher accuracy, and increased stability. Thanks to optimized connectivity, the maximum range for reliable distance measurement increases to over 400 meters, and stable positioning is possible — even through five vehicles in underground garages. This addresses the well-known limitations of traditional UWB. With 22-nm process technology and energy-efficient design, power consumption is reduced by 32 percent during transmission and 56 percent during reception compared to similar solutions, which is ideal for applications with long standby times, such as Sentry Mode.

The functional demonstration and parallel verification of the Dubhe-UWB-SoC chip were carried out using the CMP200 and CMP180 radio communication testers from Rohde & Schwarz. As a FiRa Consortium-certified test platform, the CMP200 was used to comprehensively verify the chip’s UWB functionality at the physical level and confirm compliance with IEEE 802.15.4a/z/ab standards. The CMP180 was used to capture and verify BLE signals. Together with the CMP200, it was employed to demonstrate the full BLE-Assisted-MMS dual-mode functionality.

For Calterah, the collaboration with Rohde & Schwarz brings strategic advantages. Joint verification with a leading test equipment provider accelerates the development and adoption of the new IEEE 802.15.4ab standard and the BLE-MMS ecosystem. Calterah also offers customers in the broader value chain a ready-to-use, reliable, and officially verified solution for Automated Test Equipment (ATE) and production testing, significantly reducing development hurdles and risks for these customers. At the same time, the global recognition of Rohde & Schwarz in test and measurement greatly increases customer confidence in the performance and reliability of the Dubhe chip, paving the way for market adoption.

The Dubhe-UWB-SoC chip combines communication and sensing functions in a single architecture, providing the foundation for various applications. In addition to digital car keys, this includes radar-based features such as kick-to-open for the tailgate, detection of vital signs in the interior (for example, Child Presence Detection, CPD), and intrusion detection. This combination in one chip significantly reduces complexity, further advancing automotive intelligence.

“The collaboration with Rohde & Schwarz was crucial for the successful verification of the Dubhe-UWB-SoC and has significantly shortened the time to market. We thank them for the excellent cooperation. In the future, we aim to further expand the ecosystem with partners from the industry,” says Peter Wiese, EMEA Managing Director at Calterah.

Interested parties can find more information in a detailed technical whitepaper available here.

Rohde & Schwarz USA is located at booth 4567 in the Las Vegas Convention Center (LVCC).

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Rohde & Schwarz

Rohde & Schwarz is striving for a safer and connected world with its Test & Measurement, Technology Systems and Networks & Cybersecurity Divisions. For over 90 years, the global technology group has pushed technical boundaries with developments in cutting-edge technologies. The company's leading-edge products and solutions empower industrial, regulatory and government customers to attain technological and digital sovereignty. The privately owned, Munich based company can act independently, long-term and sustainably. Rohde & Schwarz generated net revenue of EUR 3.16 billion in the 2024/2025 fiscal year (July to June). On June 30, 2025, Rohde & Schwarz had more than 15,000 employees worldwide.

R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.

Automotive test solutions – Test it. Trust it.

As a global provider of innovative test and measurement instruments, software and systems, Rohde & Schwarz employs its technical expertise to advance the automotive industry’s vision of autonomous driving, electrification, and connectivity. OEMs, chip suppliers, tier1s and engineering service providers, as well as certification organizations around the world rely on the test solutions for radar, connectivity including antennas, infotainment, in-vehicle networks, electric drivetrain components and electromagnetic compatibility. Rohde & Schwarz supports its customers over the entire automotive lifecycle from R&D to production and beyond.

About Calterah

Calterah founded in 2014, is a global leader in CMOS single-chip millimeter-wave radar sensors. Calterah pioneered the world’s first CMOS 77/79 GHz mmWave radar transceiver for the automotive OEM market and continues its innovation with system-on-a-chip (SoC), antenna-in-package (AiP), and radiator-on-package (RoP) solutions. Its comprehensive product portfolio supports applications in advanced driver assistance systems (ADAS), autonomous driving, smart home, and industry.

Calterah collaborates with more than 30 automotive manufacturers worldwide and equips over 300 car models with its mmWave radar SoCs. To date, Calterah has delivered more than 20 million integrated circuits (ICs).

Headquartered in Shanghai, Calterah has R&D centers across China and offices in Hong Kong and Munich. The company has filed more than 600 patents and is certified to automotive industry standards to ensure the highest reliability and safety. Calterah is committed to continuously advancing mmWave radar and UWB technology for a safer and smarter world.

For more information, visit the Calterah LinkedIn page and Calterah.com/en.