56‐3: Student Paper: An Amplifier with Higher Gain Using Corbino—TFTs. Issue 1 (28th June 2021)

• Record Type: Journal Article
• Authors: Lee, Woo-Rim; Jo, Jae-Hee; Mativenga, Mallory; Chung, Hoon-Ju; Lee, Seung-Woo
• Is Part Of: Digest of technical papers. Volume 52:Issue 1(2021)
• Page Start: 784
• Page End: 787
• Publication Date: 2021-06-28
• Subjects: Bio signal -- Bio sensor -- Depletion load inverting amplifier -- TFT (Thin Film Transistor) -- Corbino — TFT; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.14800
• Languages: English
• ISSNs: 0097-966X

Abstract

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.