New Current-mode Universal Filter by a Novel Low Voltage Second Generation Current Conveyor
Year: 2013
Type: article
Abstract: Inthe start of this paper, a novel second generation current conveyor (CCII) with simple structure is presented. The proposed circuit has a rail to rail dynamic range in output and input terminals. Moreover, it is highly capable of driving currents in node z. This circu it wo rks in class AB mode and is able to sink and source current in output node z+ and z- respectively. The CCII circuit was simulated in the standard 0.18μm CMOS TSM C technology with minimal count of CMOS transistors. The proposed circuit can be suitable for RF analogue structures such as filters, oscillators and sigma -delta modulators because of the high frequency performance fo r current and voltage transfer functions. In this circuit, the -3d B cut-off frequency of voltage and current transfer functions have been measured 3.8GHz and 3.2GHz respectively. In the remainder of the article a universal current mode filter is designed and simu lated by sub base structure of the suggested CCII circuit. Th is universal filter can emp loy low pass, high pass and band pass which can adjust the cut-off frequencies and quality factors by variation of grounded resistor values. The cut-off frequencies of filters are about 300MegHz. Another good characteristic of filters is a lo w sensitivity to variation of passive component.
Authors: Malek Ramezani, Nima Ahmadpoor
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W51058396