The instrumentation amplifiers for measuring biological signals have been evolving exponentially in recent years, since the first publication of a capacitively-coupled chopper instrumentation amplifier. This amplifier opened the door to a brand-new way to amplify biological signals, growing in accuracy and, above all, in noise cancellation efficiency. The following thesis presents the instrumentation amplifiers fundamentals, providing the state-of-the-art review on the advanced instrumentation amplifiers architectures. The aim of this project is to design an instrumentation amplifier circuit suitable for the measurement of electromyography (EMG) signals. Therefore, this thesis presents the fundamentals of human body biosignals with emphasize on the EMG, acquisition of EMG signal and the implemented analog front-end circuit for EMG signal measurement. Following the Introduction in chapter 1, the thesis provides fundamentals on electromiography in chapter 2. The EMG measurement circuit description is provided in chapter 3, including the simulation results. Detailed specification of the implemented prototype for EMG measurement is provided in chapter 4. Chapter 5 presents the measurement results, followed by the concluding remarks in chapter 6.

Outgoing