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: The proposed biquad can realize the inverting, non-inverting, and differential types universal filtering responses from the voltage and current output terminals without changing the filter topology.
Abstract: A fully cascadable (i.e., low/high input impedance for current/voltage input signals and high/low output impedance for current/voltage output signals) mixed-mode (input and output signals can be voltage or current) universal filter biquad by using three differential difference current conveyors (DDCCs), three grounded resistors, and two grounded capacitors is presented in this paper. The proposed biquad can realize the inverting, non-inverting, and differential types universal filtering responses (lowpass, highpass, bandpass, notch, and allpass) from the voltage and current output terminals without changing the filter topology. The proposed circuit is suitable for cascading in all the four possible modes (i.e., voltage, current, transresistance, and transconductance modes). Moreover, the proposed mixed-mode biquad still enjoys (i) using only grounded passive components, (ii) no need of extra inverting and non-inverting amplifiers for special input signals, and (iii) low active and passive sensitivities. This paper also shows how analytical synthesis can be used to produce the proposed mixed-mode filter circuit. H-Spice simulation results confirm the theory.
23 citations
TL;DR: In this paper, the authors proposed a new active filter for filtering the HF current ripple generated by current-fed dc/dc converters based on the use of an active filter connected in parallel with the source, without any passive filter between the source and the power converter.
Abstract: This paper presents a new method for filtering the HF current ripple generated by current-fed dc/dc converters. This method is based on the use of an active filter connected in parallel with the source, without any passive filter between the source and the power converter. The design of this new active filter and its associated controllers are fully explained in the paper. Experimental results validate the proposed filtering method. The structure of the proposed active filter is patented at the World Intellectual Property Organization under the number WO/2008/132318.
23 citations
TL;DR: In this article, a method of designing continuous-time active RC filters which employ only capacitors and FET transistors is presented, and the effective RC time constants of these filters are determined by capacitor ratios.
Abstract: A method of designing continuous-time active RC filters which employ only capacitors and FET transistors is presented. The effective RC time constants of these filters are determined by capacitor ratios. The filters employ switched resistors. These filters can use any existing active RC or passive RC topology as the basis for the design and inherit the sensitivity properties of the circuit from which they are derived. These switched-resistor (SR) filters operate over a wide frequency range and are manufacturable in monolithic form using a basic MOS process which requires no component trimming.
23 citations
TL;DR: The results presented here fill both a circuit-theoretic gap and an application-oriented gap related to single transistor filter design which, apart from a few examples in the literature, has not been rigorously addressed.
Abstract: This paper systematically investigates the design of single transistor second-order active filters out-lining all possible architectures and possible impedance settings using an exhaustive MAPLE search code for all stable cases with the minimum number of passive elements (two resistors and two energy storage elements). The search is performed on six general voltage-input voltage-output transfer functions, derived using a small-signal two-port network transistor model. Selected LC and RC filter designs are verified experimentally. The results presented here fill both a circuit-theoretic gap and an application-oriented gap related to single transistor filter design which, apart from a few examples in the literature, has not been rigorously addressed.
23 citations
01 Dec 2011
TL;DR: In this paper, the generalized analysis of the first Butterworth filter based on two passive elements is introduced in the fractional-order sense, where it will lead us back to the known condition of the integer-order circuit when the two fractional orders equal one.
Abstract: In this paper, the generalized analysis of the first Butterworth filter based on two passive elements is introduced in the fractional-order sense. The fractional-order condition of the Butterworth circuit is presented for the first time where it will lead us back to the known condition of the integer-order circuit when the two fractional-orders equal one. Therefore, the conventional behavior of the integer-order circuit is a narrow subset of the fractional-order ones. The circuit is studied under same and different order cases, and verified through their numerical simulations. Stability analysis is also introduced showing the poles location in the fractional-order versus integer order cases.
23 citations