The novel current-tunable voltage-mode universal biquad filter and sinusoidal quadrature oscillator using only two current-controlled current differencing buffered amplifiers (CCCDBAs) and two capacitors without external passive resistors have been presented. The first proposed filter realizes all the five standard types of the biquadratic functions and provides independent electronic tuning of...

A new circuit for realization of universal current-mode filter using current Follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filter functions simultaneously with a single current source at the input. The band reject and all pass filters can also be obtained from the proposed circuit without any extra hardwar...

This paper presents an independently tunable high-input impedance voltage-mode universal biquadratic filter using one plus-type second-generation current conveyor (CCII+), one full differential current conveyor (FDCCII), two grounded capacitors and three grounded resistors which can realize voltage-mode universal filtering responses (lowpass, highpass, bandpass, notch and allpass) from the same...

In recent years there has been widespread use of power electronics devices and nonlinear elements in rectification and switchgear applied to various areas of power system. Power systems contain levels of harmonics which can no longer be ignored by engineers, planners, energy conservationists and economists due to the presence of non-linear loads. A simulated case study of distributed system in ...

The use of nonlinear load led to the injection of harmonics into the power system. In this paper, the performance of two topologies of shunt hybrid power filters for compensating voltage and current harmonics in the distributed power generation (DPG) system has been compared. The control algorithm used in this paper is the p-q theory for the harmonics compensation. The performance of these topo...

* 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...

This paper presents an integrated approach feasible direction method and genetic algorithm (FDM+GA) to investigate the planning of large-scale passive harmonic filters. The optimal filter scheme can be obtained from a system under abundant harmonic current sources where harmonic amplification problems should be avoided. The constraints of harmonics with orders lower than the filter tuned-points...

This paper introduces matrix filters as a tool for localization and detection problems in passive sonar. The outputs of an array of sensors, at some given frequency, can be represented by a vector of complex numbers. A linear filtering operation on the sensor outputs can be expressed as the multiplication of a matrix (called a matrix filter) times this vector. The purpose of a matrix filter is ...

In this paper we present an optimal design procedure for secondand third-order active resistance-capacitance (RC) single-amplifier building blocks that are used to build a high-order tolerance-insensitive allpole filter. The design procedure of low-sensitivity, low-pass secondand third-order active-RC allpole filters, with positive feedback, has already been published. The design was extended t...

A continuous-time (CT) sigma-delta (ΣΔ) modulator clocked at 128 MHz with a hybrid active-passive loop filter is presented for WCDMA applications. The proposed 5-order loop filter arch itecture mainly consists of two passive integrators and three active integrators. To erase the summation amplifier used in the chain of integrators with weighted feedforward summat ion (CIFF) topology, the capaci...