The goal of this applications brief is to inform and educate partners and customers on the advancements that Texas Instruments’ has made in millimeter wave (mmWave) Radar sensing. The key advancement discussed in this brief is the release of the IWRL6432 low power 60 GHz mmWave radar sensor that can run sensing applications from a typical battery. The Technology: What is mmWave Radar Sensing? mmWave is a radio frequency (RF) sensing technology that works in the spectrum band between 30 GHz and 300 GHz. mmWave has a wavelength of 1 millimeter up to 10 millimeters. Therefore, the industry term most often used for the technology is mmWave as a result of the aforementioned wavelength. The sensing technology works by using one or more RF transmitters to send short radio pulses at pre-determined frequencies from an on-chip frequency generator into an area. The radio pulses reflect off objects in the area, and those reflections are captured on the same integrated circuit (IC) by one or more on-chip RF receivers. Information about the reflected signal is then used to determine range, velocity and angle of reflection of a person/object with an unmatched level of accuracy and reliability. The range is the distance of the object from the sensor. While the velocity is the speed and direction of movement of the object. Finally, the angle of reflection is the angle at which the reflected signals return to the sensor upon reflection. This information is used to determine the precise location of the object relative to the sensor and in a three-dimensional space. As previously mentioned, mmWave is an RF technology. Therefore, mmWave sensors are only mildly susceptible to changes in or less than ideal environmental conditions. Conditions such as bright sunlight, darkness, rain, sleet, snow, smoke, fog, high humidity, extreme high or extreme low temperatures have little to no impact on the accuracy of a mmWave radar sensor. As a result, radar can be used in all kinds of applications, whether industrial, residential, indoors or outdoors, where competing technologies fail. mmWave radar sensors detect people and protect their identities. As an RF based sensing technology the sensors do not return any visual nor identifying information unique to a specific person or object. You don't get a visual of the object or person. The radar does not return any information that can compromise someone's privacy beyond presence and number of objects detected. Additionally, the radar can be easily installed behind objects allowing the radar to run invisibly, reliably and robustly. The radar can sense through various media (e.g. glass, plastic, wood, drywall of varying thickness and more). Therefore, the radar can be placed behind a picture or behind curtains, basically out of plain sight. IWRL6432: Low Power Use Cases/Products To date, mmWave Radar sensing based products for industrial use have been largely relegated to line-powered applications. This limited radar’s potential use-cases and product appeal despite the performance advantages that the technology has over competing technologies like Passive Infrared (PIR) sensors. IWRL6432, with focus on high-performance while consuming less power is set to change that. Radar can supplement the camera in products like home security cameras and video doorbells. adding functionality such as precise location detection, low-power presence detection, human vs non-human classification and person counting, while reducing false detections/alarms. End equipment developers can even decide to replace the camera completely to allow the security solution to be placed in areas where personal privacy is of concern and non-visual observation is desired like bedrooms and restrooms. The low-power consumption of the device enables battery power too, further increasing the areas where the device can be placed.