Graphene: Graphene Audio Voltage Amplifier (Small 3/2012)
Source abstract
Abstract
The image shows an integrated graphene voltage amplifier, which paves the way for all-graphene analogue electronics. Signal amplification is obtained by fabricating graphene transistors in which the top gate overlaps with the source and drain contacts. This results in full-channel gating and therefore high transconductance at room temperature. The fabricated complementary amplifier has a voltage gain of 3.7 (11.4 dB) at 10 kHz, a total harmonic distortion in the audio frequency range of <1%, a unity-gain frequency of 360 kHz, and a −3 dB bandwidth of 70 kHz. The obtained values demonstrate that, among other applications, the present graphene amplifier is suitable for high-fidelity amplification of audio signals.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Sensor Technology and Measurement Systems · Analog and Mixed-Signal Circuit Design
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