A new high input impedance voltage-mode universal biquadratic filter with three input terminals and six output terminals is presented. The proposed circuit uses three plus-type differential difference current conveyors (DDCCs), three resistors, and two grounded capacitors. The proposed circuit can realize all the standard filter functions, namely, lowpass, bandpass, highpass, notch, and allpass...

Abstract—This paper presents a voltage mode universal biquadratic filter with one input and five output terminals, realizing all the standard filter functions that are high pass, band pass, low pass, notch and all pass, without changing the circuit topology. The proposed circuit employs three plus-type differential difference current conveyors (DDCCs), three grounded resistors and two grounded ...

The relationship between the shape of the ascending aortic pressure wave form and aortic input impedance was studied in 18 patients who underwent elective cardiac catheterization but in whom no heart disease was found. Ascending aortic flow velocity and pressure were simultaneously recorded from a multisensor catheter with an electromagnetic velocity probe and a pressure sensor mounted at the s...

Basic fundamentals of AC electrogravimetry are introduced. Their main requirements and characteristics are detailed to establish the design of an electronic system that allows the appropriate extraction of data needed to determine the electrogravimetric transfer function (EGTF) and electrochemical impedance (EI), in an experimental set-up for the AC electrogravimetry technique.

“Geomagnetically induced currents” (GIC) in ground-based technological networks are a manifestation of space weather. GIC are a potential source of problems to the systems and therefore important in practice. GIC in a power system (or in principle in any other discretely-earthed system) can be calculated conveniently by using matrix equations presented earlier. Since temporal variations associa...

* Faculty of Engineering and Research Center for Communication and Information Technology (ReCCIT), King Mongkut’s Institute of Technology Ladkrabang. ** Department of Industrial Electrical Technology (IET), Faculty of Engineering, King Mongkut’s Institute of Technology North Bangkok. Abstract A novel circuit configuration for the realization of the single-input and three-output (SITO) currentm...

In this work, an electronically tunable universal voltage-mode biquadratic filter with single input and five outputs is introduced. The proposed filter structure only employs three differential difference current conveyor transconductance amplifiers (DDCCTAs) and two grounded capacitors without needing any external passive resistor. All the five standard biquadratic filter functions; lowpass, b...

Title of Dissertation: STATISTICS OF IMPEDANCE AND SCATTERING MATRICES IN CHAOTIC MICROWAVE CAVITIES: THE RANDOM COUPLING MODEL Xing Zheng, Doctor of Philosophy, 2005 Dissertation directed by: Professor Edward Ott Professor Thomas M. Antonsen, Jr. Department of Physics A model is proposed for the study of the statistical properties of the impedance (Z) and scattering (S) matrices of open electr...