From Communication to Sensing: Calterah “All-in-One” UWB Chips Unlock Smarter Vehicle Experiences
2026-02-26
A Single Chip Reused for Both Secure Ranging & Positioning and Real-Time Sensing
As the demand for automotive intelligence continues to evolve, the industry is actively seeking solutions that deliver richer functionality within optimized cost. While Ultra-Wideband (UWB) technology has already made its mark in the digital key sector with its centimeter-level precision, Calterah has taken a decisive leap forward—introducing Dubhe, a UWB chip series for both communication and sensing, built on our deep expertise in automotive RF and radar sensing. This innovation is poised to support multiple intelligent automotive applications using a single hardware platform.
Tech DNA of a Proven Leader in mmWave Radar Chips
Calterah charted a different course when entering the UWB market. By leveraging over a decade of expertise and a track record of shipping tens of millions of automotive-grade mmWave radar chips, we have designed UWB chips with comprehensive radar system engineering capabilities.
This foundation ensures that Dubhe UWB chips can deliver automotive-grade reliability and environmental adaptability and filter out real-world interference for automotive applications, significantly shortening development cycles and reducing risks in mass production.
The core advantage of Dubhe is its pioneering 2-transmit, 4-receive (2T4R) architecture. Compared to 1T2R solutions, the 2T4R chip can help to obtain signal information in more dimensions, which means superior angular resolution, enhanced spatial awareness, and more robust interference immunity.
With this hardware structure, Dubhe can enable reliable positioning and sensing in complex scenarios, such as stable positioning in underground parking lots, detecting vital signs after penetrating seats, and accurately recognizing kick-to-open gestures in cluttered environments.
“All-in-One” Chips Supporting Flexible Deployment
One Chip for Multiple Use Cases with Optimized System Cost
Calterah’s innovative UWB chips that handle both communication and sensing allow a single UWB anchor to pull double duty. It can function as a secure digital key anchor for ranging and unlocking, while simultaneously acting as a radar sensor for in-cabin monitoring, kick sensing, or sentry mode. This "all-in-one" design slashes system cost while boosting efficiency.
Flexible Architectures for Various Car Models
Calterah’s UWB solution supports different numbers of anchors and flexible installation positions. Dubhe can meet the intelligent feature requirements of various vehicle models, for both ground-up new architectures and feature enhancement for existing platforms.
A Pragmatic Roadmap for Future Use Cases
Currently, Calterah is partnering with industry leaders to bring two major use cases to maturity: child presence detection (CPD) and kick sensing.
Beyond today’s requirements, Dubhe’s powerful hardware and radar capability are built for tomorrow. Its great potential in spatial resolution and signal analysis—brought by communication and sensing capabilities—unlocks an evolutionary roadmap for advanced interactive and safety features. Applications such as gesture recognition, seat occupancy detection, intrusion alerts, sentry mode, etc. all have a clear path for development, paving the way for future smart vehicle capabilities.
From a systems-engineering standpoint, Calterah goes beyond supplying UWB technology. We integrate both communication and sensing, drawing on over a decade of experience in radar chip design, algorithms, and mass production, to provide high-reliability and high-performance solutions that help customers bring intelligent vehicles to market faster.
