Simple Design on Nanoscale Receivers Using CNT Cantilevers

To develop nanoscale sensors with future potential, a nanoscale receiver utilizing the nanomechanical vibration of a cantilever composed of a carbon nanotube, had been proposed for detecting the digital information carried by wireless signals. The introduced receiver includes two essential parts: a phase detector and demodulator, which employ a reference signal and carrier signal, respectively. Additional components such as electrical circuits and oscillators are required to excite these signals, increasing the sensor size. This study presents a design method for simplifying the receiver structure to contribute to sensor miniaturization. This study theoretically derives a tractable form that can describe the performance of the introduced receiver. This form enables the determination of a simple receiver structure with performance enhancement from a mathematical perspective. Using the proposed method, either the reference wave or carrier signal can be excluded from the receiver, simplifying its structure. The results are demonstrated through a numerical simulation.