Realization of High-Order OTRA-MOSFET-C Active Filters
| Autor: | Dong-Shiuh Wu, Yuh-Shyan Hwang, Chun-Chi Shih, Jiann-Jong Chen, Wen-Shou Chou |
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| Rok vydání: | 2007 |
| Předmět: |
Engineering
business.industry Applied Mathematics Low-pass filter Amplifier Hardware_PERFORMANCEANDRELIABILITY law.invention Capacitor Parasitic capacitance law Signal Processing Hardware_INTEGRATEDCIRCUITS Electronic engineering Prototype filter Network synthesis filters Resistor business Active filter |
| Zdroj: | Circuits, Systems & Signal Processing. 26:281-291 |
| ISSN: | 1531-5878 0278-081X |
| DOI: | 10.1007/s00034-006-0330-0 |
| Popis: | High-order linear transformation (LT) MOSFET-C active filters with reduced parasitic capacitance effects based on operational transresistance amplifiers (OTRAs) are presented in this paper. A systematic method is developed to realize voltage-mode LT OTRA-based filters efficiently. Based on the proposed design procedures, we can synthesize high-order filters with OTRAs with only MOSFET resistor circuits (MRCs) and virtual grounded capacitors. Signal processing circuits employing OTRAs have almost constant bandwidths because of the use of current-feedback configurations. A third-order Chebychev lowpass filter is demonstrated. HSPICE simulation results that confirm the theoretical analysis are obtained. Furthermore, the proposed circuits can be extended to higher-order filters. |
| Databáze: | OpenAIRE |
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