Asahi Kasei unveils radar modules for privacy-focused health monitoring

Asahi Kasei Microdevices Corp. has launched a new line of radar modules designed to detect human presence, breathing, posture and falls without the use of cameras.

The AK581xAIM Antenna-in-Module (AiM) devices are now commercially available and aimed at accelerating product development in smart home, health care and consumer electronics applications. The modules integrate millimeter wave radar technology in a compact package that eliminates the need for custom antenna or radar design expertise.

The rollout comes as more adults in the United States express a desire to age at home. A 2024 AARP survey found that 75% of Americans over age 50 plan to remain in their homes as they age, fueling demand for privacy-preserving monitoring technologies.

The AiM modules combine AKM’s radar chip with a 4-in/4-out antenna array in a 23mm × 23mm package. Multi-channel measurement and high angular resolution allow for precise 3D sensing to distinguish between people, pets and objects.

Because the system does not rely on cameras, it can be deployed in private areas such as bedrooms and bathrooms, offering safety monitoring while preserving privacy. The company said the technology may also reduce caregiver burden by enabling faster response times in the event of a fall. In addition to health monitoring, the modules can be used for occupancy-aware control of lighting, heating and air conditioning systems to improve energy efficiency.

To support product developers, Asahi Kasei is also offering two evaluation kits. The AIMEZ-V is geared toward rapid proof-of-concept testing with multiple connectivity options, while the LUMI kit supports algorithm development with an integrated system-on-chip for advanced data processing and machine learning. Both kits include baseline software to simplify setup and integration.

Asahi Kasei has designated its electronics division as a priority growth area, citing the AiM radar modules as part of its strategy to expand in electronic materials and components.

Growing role in health care

Radar-based sensing is increasingly being applied in health care settings where unobtrusive monitoring is critical. Researchers are exploring its use for continuous vital sign tracking, such as measuring respiration and heart rate without the need for wearable devices. The technology is also being studied for early detection of sleep apnea and other sleep-related disorders, offering a less invasive alternative to traditional monitoring systems.

Fall detection remains one of the most significant use cases, particularly in elder care. Unlike camera-based systems, radar provides real-time monitoring while maintaining privacy, which is important for adoption in home and long-term care environments. Some pilot programs have also investigated radar’s role in hospital patient monitoring, where it could help reduce the frequency of manual checks and alert staff quickly to changes in a patient’s condition.

By enabling passive, continuous observation, radar systems are seen as a potential tool to improve safety, support independent living, and lessen the workload for caregivers in both home and clinical environments.