56‐3: Student Paper: An Amplifier with Higher Gain Using Corbino—TFTs

Abstract

In this paper, an amplifier circuit using oxide TFTs for amplifying brain signal is proposed. The proposed circuit is largely composed of two TFTs. It consists of a driving transistor that receives an input and a load transistor that determines the voltage gain through interaction with the driving transistor. Based on depletion load inverting amplifier, we analyzed the small signal modeled circuit. By using a circular TFT called Corbino‐TFT, we were able to obtain a greater voltage gain. The measurement results were compared with the calculated voltage gain. In addition, to get a higher gain, method of connecting two amplifiers in series is presented and simulation results are also presented.