期刊名称：Walailak Journal of Science and Technology (WJST)
印刷版ISSN：2228-835X
出版年度：2021
卷号：18
期号：14
页码：1-19
DOI：10.48048/wjst.2021.21451
语种：English
出版社：Institute of Research and Development, Walailak University.
摘要：Two novel resistorless structures of a first-order voltage-mode all-pass filter are presented in the paper. Both the structures employ a fully differential second-generation current conveyor (FDCCII) as the primary active element, in addition to an active resistor. A grounded capacitor is the only passive component used in both the structures. In both the structures, CMOS realization of FDCCII is utilized; hence, these structures are CMOS compatible. Some of the other highly demanded features possessed by the presented all-pass structures are: a simple circuit topology, electronic tunability, high input impedance, constraint-free operation in terms of passive component matching, and low sensitivity figures. The theoretical performances under ideal and non-ideal scenarios are presented in detail. Furthermore, the proposed idea is extended to an Nth-order voltage-mode all-pass filter and a quadrature oscillator to explore some of the possible applications. PSPICE simulation results verify the theoretical claims of the presented all-pass filters.HIGHLIGHTSTwo novel resistorless structures of first-order all-pass filters based on fully differential second-generation current conveyor are presentedPerformance of the proposed structures are thoroughly described in ideal and non-ideal scenariosTheoretically described details of the proposed structures are verified by carrying simulations on PSPICE using 180 nm CMOS technologyAn Nth-order all-pass filter and a quadrature oscillator are also presented as applicationsGRAPHICAL.
