Topic
Electronic filter
About: Electronic filter is a research topic. Over the lifetime, 13207 publications have been published within this topic receiving 93063 citations. The topic is also known as: filter.
Papers published on a yearly basis
Papers
More filters
TL;DR: An optimization approach using FORTRAN feasible sequential quadratic programming to maximize the power factor at the DC drive loads terminals is presented using different passive filter topologies.
Abstract: The existence of harmonics in power systems and their effects have led to opulent issues of electric power quality. In this article, an optimization approach using FORTRAN feasible sequential quadratic programming to maximize the power factor at the DC drive loads terminals is presented using different passive filter topologies. Many constraints are taken into consideration such as series/parallel resonance conditions, effect of the supply frequency, and non-linearities of the supply and the load. Also, a detailed comparison of the simulated results for shunt- and series-passive filters is also presented in this article. The general compensation characteristics and the detailed comparison are discussed by means of different numerical examples from previous publications.
41 citations
20 Jun 2004
TL;DR: In this paper, two resonant converter concepts and a pulse width modulated converter (PWM converter) feeding ultrasonic transducers are analyzed and compared, and the results are summarized in a benchmark matrix.
Abstract: Piezoelectric ultrasonic transducers are often used in well known applications such as ultrasonic cutting or cleaning processes. A novel application is the utilization of transducers in ultrasonic standing wave atomizers. Here, the transducers produce an ultrasonic field resulting in high alternating excess pressures, used to disintegrate polymer melts for powder lacquer. The power supplies stimulating the transducer have to provide output voltages at ultrasonic frequencies and output power levels at several kW. Besides the output filter circuit of an inverter is strongly influenced, especially when driving piezoelectric transducers with a high mechanical quality factor. In this contribution, two resonant converter concepts and a pulse width modulated converter (PWM converter) feeding ultrasonic transducers are analyzed and compared. In this comparison focus is laid on: sensitivity of the output filter to varying load conditions, potential of miniaturization and cost savings and the frequency range, in which different transducers can be fed by the power supply. The results are summarized in a benchmark matrix. Based on these results, a flexible PWM converter was developed and realized. This laboratory power supply is part of a rapid prototype system (dSpace). Measurements are presented in the last part of this contribution.
41 citations
TL;DR: In this paper, a new MOS-C bandpass-low-pass filter using the current feedback operational amplifier (CFOA) was presented, which employs two CFOAs, eight MOS transistors operating in the nonsaturation region, and two grounded capacitors.
Abstract: A new MOS-C bandpass-low-pass filter using the current feedback operational amplifier (CFOA) is presented. The filter employs two CFOAs, eight MOS transistors operating in the nonsaturation region, and two grounded capacitors. The proposed MOS-C filter has the advantage of independent control of Q and /spl omega//sub 0/. PSpice simulation results for the proposed filter are given.
41 citations
TL;DR: In this paper, a four terminal current-controlled active element is introduced, where parasitic resistances at two current input ports are controlled leading to the definition of current differencing buffered amplifier.
Abstract: A new four terminal current-controlled active element is introduced, where parasitic resistances at two current input ports are controlled leading to the definition of current-controlled current differencing buffered amplifier. Bipolar implementation and as application current-mode band-pass filter circuits are proposed. Simulation results using real device parameters are included, which show device bandwidth of 35 MHz, low total harmonic distortions, and tuning over a wide current range.
41 citations
TL;DR: In this paper, a novel configuration of balanced frequency InGaAs pseudomorphic high electron mobility transistor (PHEMT) monolithic microwave integrated circuit (MMIC) tripler is proposed.
Abstract: A novel configuration of balanced frequency InGaAs pseudomorphic high electron mobility transistor (PHEMT) monolithic microwave integrated circuit (MMIC) tripler is proposed. A resonant LC filter is used to eliminate the fundamental frequency and a phase delay line is employed to suppress the second harmonic. The separation of the independent phase shifters makes the tripler more compact and flexible. The conversion loss of the tripler operating from 12 to 36GHz is less than 9.4dB at 9-dBm input power. As compared to the third-harmonic frequency, the fundamental frequency is suppressed more than 21.4dB while for the second harmonic is more than 22.3dB at 36GHz
41 citations