Are millimeter waves key to remote charging?

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Millimeter Waves Are Central to Motorola's Remote Charging Development

Motorola is actively developing a remote wireless charging system that relies on millimeter wave frequencies, a technology that enables smartphones to recharge simply by being in the same room as the transmitter. This approach allows for charging without the need for direct contact or placement on a charging pad, with the handset needing only to be within a meter of the charger. The company is collaborating with the startup GuRu Wireless to bring this technology to fruition, although specific models that will feature this capability have not yet been identified.
Transmitter Utilises Millimeter Wave Frequencies

The remote charging system being developed by Motorola employs a small transmitter that operates using millimeter wave frequencies. These specific frequencies are already in use for transmitting 5G signals in other applications, highlighting the established utility of this part of the electromagnetic spectrum. This technology forms the core of how the charger can broadcast power over a distance.
Airwave Charging Demonstrated by Other Companies

Motorola's pursuit of remote charging is not an isolated effort within the industry. Researchers in the United States have previously demonstrated the ability to charge small connected devices by harnessing energy from the 5G network, indicating a broader trend in leveraging these high-frequency waves for power transmission. Additionally, Chinese firm Xiaomi showcased a similar airwave-based wireless charging technology earlier in the year, which also allows devices to charge automatically when in proximity to a compatible transmitter.
Potential for Broader Application Beyond Smartphones

The advancement of remote wireless charging technology, particularly its reliance on millimeter waves, suggests a future where a wider array of connected devices could benefit from untethered power. While current development is focused on smartphones, the underlying principles of broadcasting energy wirelessly could extend to other small electronics and internet-of-things devices, further reducing reliance on traditional charging methods.

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Are millimeter waves key to remote charging?

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