Qi

Wireless Power Testing

Testing of wireless power transmission

The number of products that support the wireless charging function is constantly increasing due to the progressive spread of the technology. In a wide variety of sectors – 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 supporting 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 mandatory for products with wireless charging function and serve as the basis for regulatory approval, which is a prerequisite for a successful market launch.  For the European market, for example, the Radio Equipment Directive (RED) defines the test specifications for such products:

EN 303 417 (radio)

This standard, in its current version, provides a very detailed description of tests for WPT devices in terms of effective use of 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
    • Unwanted emissions from the WPT system (radiated/conducted)
  • Receiver
    • Radiation emissions
    • Blocking

EN 301 489-1 & -3 (EMC)

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

  • Emitted interference – What interference is generated by the equipment and how can it affect other equipment?
  • Immunity – How immune is the device to interference from other devices?
Mobile Phone and Smart Watch charging wireless

In addition, regulatory approval also requires compliance with electrical safety requirements based on the standards EN 62311, EN 60950-1 or EN 62368. 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 also be taken into account.

The regulatory requirements vary between the individual approval regimes. For a 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 offers you a comprehensive portfolio within the scope of wireless power transmission testing. In addition to a large number of regulatory tests for worldwide market approvals, our laboratory in Essen is the only test laboratory in Europe that offers certification tests according to various Qi profiles. So when it comes to wireless power testing, we can offer you all services from one source.

Further information about the official Qi certification

 

 

 

Further Topics