Leveraging Wireless Power

July 20, 2023
Find out how InnoTractor's asset tracking system takes advantage of Energous' wireless power technology.

Energous' wireless power transmission can power IoT devices from a distance. The company has partnered with InnoTractor, which developed an asset tracking system that takes advantage of wireless power. I talked with Frank Hermans, CEO at InnoTractor, and Eric MacDonald, Director of Product Marketing & Product Management at Energous, to get some insight into the advantages and challenges when using wireless power technology (see video above) You can check out the Q&A on June 28th

Energous provides an RF wireless power-delivery system that can power nearby devices like wireless sensors and tracking devices. The company offers chips as well as devices like its WattUp PowerBridge transmitter built using its chips. These can be used with sensors such as Wiliot’s IoT Pixel devices (Fig. 1) The IoT Pixel has a system-on-chip (SoC) with a 32-bit, Arm Cortex-M0+ running at 1 MHz. Featuring support for Bluetooth 5, it can sense temperature and location. 

InnoTractor is also taking advantage of Energous’ technology by incorporating it into its asset tracking. Energous transmitters (Fig. 2) are located in areas where tagged assets will be located or moved through, and InnoTractor’s technology will identify and track those assets. Unlike simple RFID tags, the InnoTractor devices can support sensor information such as temperature. 

The charging system leverages Energous EN4100 SoC, EN3921 power controller, and EN3913M GaN power amplifier devices. The EN2223 RF-to-dc chip is located in a remote device. It can support up to four antennas. Energous also provides 1- and 5.5-W WattUp PowerBridges. 

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About the Author

William G. Wong | Senior Content Director - Electronic Design and Microwaves & RF

I am Editor of Electronic Design focusing on embedded, software, and systems. As Senior Content Director, I also manage Microwaves & RF and I work with a great team of editors to provide engineers, programmers, developers and technical managers with interesting and useful articles and videos on a regular basis. Check out our free newsletters to see the latest content.

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I earned a Bachelor of Electrical Engineering at the Georgia Institute of Technology and a Masters in Computer Science from Rutgers University. I still do a bit of programming using everything from C and C++ to Rust and Ada/SPARK. I do a bit of PHP programming for Drupal websites. I have posted a few Drupal modules.  

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