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Ripple

Unlock new radar applications with standardized APIs.

Ripple, hosted by the Consumer Technology Association (CTA)®, is an open radar API standard to enable hardware / software interoperability and accelerate the growth of applications for general purpose consumer radar.

Experts from across the silicon, sensing, automotive, and electronics industries have come together to develop open and standardized API interfaces for radar system development. Standardized API calls for general purpose radar enable interoperability and the rapid deployment of new applications.

The first release of the Ripple standard (January 2022) focuses on enabling interoperability between FMCW radars by defining a Hardware Abstraction API, Signal Processing Libraries, and Extensions. The second release of the Ripple standard (June 2022) adds specification documentation, updates the standard data formats of the Hardware Abstraction level, and adds a Hello World demo. 

Benefits of Ripple

Interoperable software libraries: With standardized calls, software libraries can work across various radar hardware implementations, ensuring reusability and easier firmware upgrades.

Growth of radar hardware ecosystems + integrators: With an open API standard, it's easier for integrators to get started, develop, and distribute radar solutions. This reduced barrier to entry will lead to new products and services for consumers.

Opportunities to innovate and differentiate with extensions: Ripple will enable developers to create specialized extensions so that they can build on the standard to support their own differentiated use cases. These extensions can be incorporated as official interfaces in future versions of the standard.

Education and academic research: Standardized software that works across all radar applications can simplify experimentation and prototyping, making radar technology more accessible to students, startups, academics, and researchers.

Radar Applications

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Non-invasive wellness monitoring allows for contactless vital sign measurement and sleep tracking for home and clinical use.



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Occupancy detection can be used to optimize usage of office buildings and public spaces. In addition, advanced motion detection enables privacy-preserving security monitoring.

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Human activity recognition can understand a person's position and orientation, detect falls, help direct pedestrian traffic, track exercise, and more.

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Touchless gesture controls expand the way humans interact with their cars, appliances, consumer electronics, and more.


Radar sensing systems have historically been designed for single applications, with hardware and software custom-developed for each purpose. This means that traditional product solutions — from the hardware to the final user experience — are bespoke. For example, a radar speed gun shares no common components with a radar air traffic control system. Recent technological advances have made radars smaller, cheaper, and lower power. They can now be easily manufactured and embedded across a variety of consumer, industrial, automotive, and medical devices. Radar has evolved into a general purpose sensor where each radar system has the potential to support many different
 applications.

Ripple CES 2022 Booth

Ripple API Released at CES 2022

CTA Partners with Industry Leaders to Announce Ripple, a new open Radar API Standard.


Participants Include:

Acconeer
Aptiv
Blumio
Ford
Ghost Locomotion, Inc.
Google




Infineon
NXP
Qorvo
Spartan Radar
Tellus
Texas Instruments 

Get Involved

Ripple is an ongoing project that will evolve and expand over time. If you are interested in getting involved or have any questions please contact ripple@cta.tech.