On June 30, 2026, Japan's Ministry of Internal Affairs and Communications (MIC) published amendments to the Radio Equipment Regulations (Ordinance No. 84 of 2026), which are effective immediately. The amendments expand the scope of license-exempt radio stations in the 900 MHz band by explicitly including Wireless Power Transmission (WPT) and RFID devices as eligible categories under Article 6, Paragraph 4.

The new rules introduce mandatory compliance conditions for on-site WPT stations, notably requiring carrier sense mechanisms to mitigate potential interference and ensure human safety. Specific exposure limits are also defined, with the Specific Absorption Rate (SAR) capped at 2 W/kg for the whole body (excluding limbs) and 4 W/kg for limbs (excluding hands).

These changes are designed to facilitate the deployment of innovative wireless technologies while maintaining robust safety and interference controls. The amendments also provide transitional measures, ensuring that existing technical conformity and design certifications remain valid after the new rules take effect.

Manufacturers, importers, and operators of WPT and RFID devices in the 900 MHz band must review and update their compliance strategies to meet the new requirements. The regulatory update is expected to have a significant impact on the wireless device market in Japan.

This regulatory change is classified as High Impact.

Key reasons for high impact:

The amendments are final and immediately effective, requiring mandatory compliance for a broad range of WPT and RFID devices. New technical requirements, including carrier sense mechanisms and SAR limits, directly affect product design, approval, and market access. The expansion of license-exempt scope in the 900 MHz band impacts manufacturers, importers, certification bodies, and operators.

Who is affected?

Manufacturers and importers of WPT and RFID devices, certification bodies, testing laboratories, and operators using the 900 MHz band.

Conclusion:

Stakeholders must promptly assess and update their compliance processes to ensure continued market access and avoid regulatory risks.