Wireless Power Testing

Testing of wireless power transmission

The number of products that support the wireless charging function continues to increase due to a progressive spread of the technology. In a wide variety of areas – automotive, medical technology or consumer electronics – the convenient technology for wireless charging of devices is now being used. Various approval requirements must be observed when placing devices that support this technology on the market.

Regulatory testing in the field of wireless technologies

In addition to a possible certification based on the specifications of the Wireless Power Consortium (WPC), regulatory tests are prescribed for products with wireless charging functions and serve as the basis for regulatory approval, which is to be regarded as a prerequisite for a successful market launch.

For the European market, for example, the Radio Equipment Directive (RED) defines the testing requirements for such products:

EN 303 417 (Radio)

This standard, in its current version, provides a very detailed description of the tests for WPT devices in relation to the effective use of the spectrum.
The tests to be performed depend on the type of device (transmitter or receiver):

  • Transmitter (charger)
    • Permissible range of operating frequencies
    • H-field requirements
    • Emissions unwanted by the WPT system (radiated/guided)
  • Receiver
    • Radiation emissions
    • Blocking

EN 301 489-1 & -3 (EMC)

These standards cover requirements to ensure that EMC phenomena are appropriately addressed. The test scope can be roughly divided into two parts:

  • Interference emission – What interference comes from the device and how can it affect other devices?
  • Immunity – How immune is the device to interference coming from other devices?
Charge a cell phone and a smartwatch Wirelessly by induction

In addition, compliance with the specifications for electrical safety based on the EN 62311 or EN 62368 standards is required for regulatory approval. Likewise, depending on the technical equipment of the actual device with regard to the technologies used (Bluetooth, WLAN, USB, NFC or mobile radio), additional regulatory test specifications must be taken into account.

The regulatory requirements vary between the individual approval regimes. For market approval in the USA, for example, FCC Part 18 and/or Part 15 serve as the basis for the regulatory tests.

Our services

cetecom advanced offers you a comprehensive portfolio within the scope of wireless power transmission testing. In addition to a variety of regulatory tests for worldwide market approvals, our laboratories in Essen and Milpitas (USA) are officially accredited to offer certification tests according to various Qi profiles. So when it comes to wireless power testing, we can offer you all services from a single source.

More information about the official Qi certification