Contactless Switching of a RF CBRAM Switch

This paper proposes a method to wirelessly rewrite the CBRAM switches for chipless RFID tag IDs. The contactless driving of the CBRAM switch is achieved by inductive coupling between a writer coil and a tag coil. On the writer side, a voltage pulse is generated on a coil which induces a varying electromotive force across another coil which is connected to the CBRAM (device part). Numerical analysis and circuit simulations were performed to confirm that pulse waves are thus induced in the device coil and it allows to switch the CBRAM. In addition, experimental results showed that the CBRAM was successfully switched from the On state to the Off state by applying multiple pulses to the writer coil.