We have long been accustomed to wireless data transmission systems (Wi-Fi, Bluetooth). Wireless charging technologies are also gradually improving. However, within a single device, they still function separately from each other. Researchers from Duke University (North Carolina) and Disney Research decided to combine them into one.
Wireless charging systems use coils to generate an electromagnetic field, the energy of which is transmitted to a coil built into the mobile device. According to the developers, the combination of power supply and data transmission systems will reduce the cost, weight and complexity of the device. However, there are still problems with bandwidth. To minimize energy loss during transmission, narrow bandwidth antennas are needed that are not suitable for data transmission.
To overcome this, scientists have developed a system that takes advantage of the capabilities of both bands. In this case, the antennas, "responsible" for the transmission of energy, use a narrow bandwidth, and the rest of the system at the same time transmits data in a wide bandwidth.
To test the effectiveness of the system, the researchers placed the transmitter and receiver at a distance of 16 cm from each other, after which the device worked only in the energy transfer mode, or in two modes at once (3 W and 3.39 Mb / s). As a result, the unified system showed the result, only 2.3% lower than the separate one.