Dynamic Range Enhancement Via Linearized Output in Nanoelectromechanical Systems by Combining High-Order Harmonics

Autor:	Hiroya Tanaka, Keita Funayama, Yutaka Ohno, Keiichi Shimaoka, Yukihiro Tadokoro, Jun Hirotani
Rok vydání:	2021
Předmět:	Physics Harmonic analysis business.industry Linearization Control theory Dynamic range Harmonics Rake Harmonic Electrical and Electronic Engineering business Energy (signal processing) Digital signal processing
Zdroj:	IEEE Transactions on Circuits and Systems II: Express Briefs. 68:3251-3255
ISSN:	1558-3791 1549-7747
DOI:	10.1109/tcsii.2021.3062390
Popis:	There is a strong non-linearity between the field-emission current amplitude and field intensity. This nonlinearity degrades the dynamic range of digital signal processing in a mechanical oscillator composed of a cantilever. To solve this issue, we propose a linearization method by combining the harmonics of the field-emission current. The proposed method significantly increases the dynamic range. The nonlinearity error is $8.94\times 10^{-3}$ %FS for the proposed method, whereas it is 14.1%FS for the conventional method given by the 2nd harmonic current detection. In addition, the proposed method enables to rake up energy of the higher-order harmonics by utilizing our design framework for combining weights, thereby providing a constant derivative of the output current of the input electric field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cf47cea8ccc89fb43652520007f0f8a4 https://doi.org/10.1109/tcsii.2021.3062390 Zobrazit plný text záznamu