CISPR PAS 38-2025 PDF

Full title and description

Industrial, scientific and medical equipment – Radio-frequency disturbance characteristics – Requirements for radio beam wireless power transfer (RB‑WPT) equipment (CISPR PAS 38:2025). This Publicly Available Specification gives emission requirements and measurement guidance for directional wireless power (radio beam) transfer systems intended to operate up to 10 m and addresses radio‑frequency disturbances in the range 150 kHz to 18 GHz, clarifying how CISPR 11 is applied to RB‑WPT where the device is not classified as radio apparatus.

Abstract

CISPR PAS 38:2025 defines EMC emission limits, measurement arrangements and normative references for radio beam wireless power transfer (RB‑WPT) equipment treated as industrial, scientific and medical (ISM) apparatus rather than regulated radio apparatus. The document adapts Group 2 disturbance limits from CISPR 11, provides practical test arrangements for radiated and conducted disturbance measurements, and highlights regulatory considerations around device classification and personnel RF exposure during testing.

General information

• Status: Current (Publicly Available Specification).
• Publication date: 8 April 2025.
• Publisher: International Electrotechnical Commission (CISPR/IEC).
• ICS / categories: 33.100.10 (Emission — Electromagnetic compatibility).
• Edition / version: Edition 1.0 (2025).
• Number of pages: 18.

Scope

The PAS applies to RB‑WPT equipment classified as industrial, scientific and medical equipment that is designed to operate at distances up to 10 m and within the electromagnetic spectrum 0 Hz to 400 GHz (the document addresses emission measurements and limits specifically in the 150 kHz to 18 GHz range). The specification is applicable only when the device is not regulated as radio apparatus; devices that intentionally transmit modulated signals for communication are typically treated as radio apparatus under national regulations and may fall outside the PAS scope. The document does not set RF‑exposure limits and warns users to ensure safe test conditions for personnel.

Key topics and requirements

• Adoption of CISPR 11 Group 2 disturbance limits and clarification of their application to RB‑WPT systems.
• Radiated and conducted disturbance measurement guidance for RB‑WPT, including recommended test arrangements and EUT configurations.
• Normative references to CISPR measurement standards (e.g., CISPR 16 series) for measurement apparatus and methods.
• Guidance on device classification (ISM apparatus vs radio apparatus) and regulatory cautions for use within ISM bands.
• Safety note: RF exposure requirements are not included — test personnel protection and exposure mitigation must be addressed separately.

Typical use and users

Intended for manufacturers and designers of radio beam wireless power transfer systems (directional wireless charging and power‑delivery arrays), EMC engineers, test laboratories establishing measurement procedures for RB‑WPT, and regulatory/compliance teams evaluating whether a product is treated as ISM equipment or as radio apparatus for market entry. The PAS helps harmonize emission testing and supports development of product families and test setups for RB‑WPT up to 10 m.

Related standards

Primary normative and informative references include CISPR 11 (emission limits for industrial, scientific and medical equipment) and parts of the CISPR 16 measurement series (radiated and conducted measurement methods). Other adjacent standards and documents relevant for EMC classification, measurement technique, and safety (such as applicable national radio regulations and RF exposure standards) should be consulted when applying this PAS.

Keywords

RB‑WPT, radio beam wireless power transfer, wireless power, EMC, emissions, radiated disturbance, conducted disturbance, CISPR 11, CISPR 16, ISM equipment, Group 2 limits, measurement guidance.

FAQ

Q: What is this standard?

A: CISPR PAS 38:2025 is a Publicly Available Specification from CISPR/IEC that sets out electromagnetic disturbance (EMC) requirements and test guidance specifically for radio beam wireless power transfer equipment when treated as industrial, scientific and medical apparatus.

Q: What does it cover?

A: It covers emission limits (principally adopting CISPR 11 Group 2 limits), measurement arrangements for radiated and conducted disturbances in the 150 kHz to 18 GHz range, normative references to CISPR measurement standards, and regulatory cautions about device classification and RF exposure during testing.

Q: Who typically uses it?

A: Manufacturers and designers of RB‑WPT systems, EMC/test laboratories, RF engineers, and regulatory/compliance teams preparing products for markets where the device is not treated as radio apparatus.

Q: Is it current or superseded?

A: This is the first edition published in 2025 and is listed as current (stability date indicated into 2026). Users should confirm any later revisions or national adoptions before relying on the text for regulatory compliance.

Q: Is it part of a series?

A: It is a CISPR Publicly Available Specification that complements existing CISPR documents—most directly CISPR 11 and the CISPR 16 measurement series—by clarifying how CISPR requirements apply to RB‑WPT equipment.

Q: What are the key keywords?

A: Radio beam wireless power transfer (RB‑WPT); wireless power; EMC; CISPR 11; radiated emission; conducted emission; Group 2 limits; measurement methods; ISM equipment.