Title :
Low-frequency differentiators and integrators for biomedical and seismic signals
Author :
Al-Alaoui, MohamadAdnan
Author_Institution :
Dept. of Electr. & Comput. Eng., American Univ. of Beirut, Lebanon
fDate :
8/1/2001 12:00:00 AM
Abstract :
A general active-network synthesis approach to inverse system design is introduced. The approach is applied to a passive RC differentiator and a passive RC integrator to obtain, respectively, a very low-frequency differential integrator and a very low-frequency differential differentiator. The frequency ranges of the proposed circuits, from dc to a few hundred hertz, are particularly suitable to the frequency ranges of biomedical and seismic signals. The advantages of the proposed circuits are delineated and include single time constants, dc stable integrators, and resistive input differentiators. Noninverting and inverting differentiators and integrators could be obtained by grounding one of the input terminals in the differential configurations
Keywords :
RC circuits; active networks; differentiating circuits; integrating circuits; medical signal processing; seismology; signal processing equipment; active-network synthesis approach; biomedical signals; dc stable integrators; inverse system design; low-frequency differentiators; low-frequency integrators; passive RC differentiator; passive RC integrator; resistive input differentiators; seismic signals; single time constants; Circuit synthesis; Differential amplifiers; Filters; Frequency synthesizers; Grounding; Network synthesis; Operational amplifiers; Signal synthesis; Transfer functions; Voltage;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
