A transmitter for a penny
Transmitters costing a penny which can operate in the NFC 13.56 MHz frequency have been described in the Institute of Physics’ Nanotechnology journal by a team of Korean researchers.
‘Sensor networks such as RFID tags, price tags, smart logos, signage and sensors could be fully interconnected and utilised by DC power of less than 0.3W,’ says the paper written by scientists from Korea’s Sunchon National University and the Paru Printed Electronics Research Institute.
It took the team four years to develop the transmitters which are in the form of a rectenna made up of an antenna, a diode and a capacitor, printed using electronic ink on plastic foil using a roll-to-roll printing process.
The digital information to be transmitted can be printed into the rectenna.