Charging Function and NFC in One Coil from Wurth Elektronik 

Würth Elektronik has expanded its innovative line of wireless power coils with integrated near-field communications (NFC) antenna. Thanks to litz wire and high-quality ferrite material, the coils are very efficient at transmitting energy, it says. The high permeability of the shielding concentrates the magnetic field and protects sensitive electronics or batteries from interference signals. 

Now there are five models, with receiver coils for transmission powers of up to 30, 40 and 50 watts, and transmitters for 100 and 120 watts for charging consumer electronics such as smartphones, smartwatches, wearables, digital cameras or tablets, while also transmitting data for identification or payment applications. The coils can also be applied to certain industrial solutions and in encapsulated medical devices. 

While the company had already introduced a method for transmitting small amounts of data with the inductive field modulation technique, this solution now offers the possibility of transferring data rates of up to 848 kbit/s by combining it with an NFC antenna. For more info, see