Linearization of Output from Nanoelectromechanical Systems by Optimally Combined High-Order Harmonics
| Autor: | Keiichi Shimaoka, Keita Funayama, Yukihiro Tadokoro, Hiroya Tanaka, Jun Hirotani, Yutaka Ohno |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dynamic range business.industry Acoustics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Signal Harmonic analysis Amplitude Linearization Harmonics 0103 physical sciences Harmonic 010306 general physics 0210 nano-technology business Digital signal processing |
| Zdroj: | 2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS). |
| DOI: | 10.1109/mems51782.2021.9375334 |
| Popis: | In field emission-based nanoelectromechanical systems (NEMSs), there is a strong nonlinearity between the amplitude of the field emission current signal and the field intensity of the incoming signal. This nonlinearity degrades the dynamic range and complicates the digital signal processing of NEMSs. To solve this issue, we propose a linearization method by combining the harmonics of the field emission current signal. We experimentally demonstrate this concept with a signal receiver based on carbon nanotubes. The experimental results show that the dynamic range significantly increases. Combining the harmonic current wave improves the nonlinearity error from 25.1 %FS to 8.63 × 10–3 %FS. This improvement is achieved by combining harmonics of field emission current with optimally controlled weights. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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