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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
More filters
Journal ArticleDOI
TL;DR: In this paper, passive inductors and LC filters fabricated in standard Si IC technology are demonstrated, and Q-factors from three to eight and inductors up to 10 nH in the gigahertz range have been realized.
Abstract: Passive inductors and LC filters fabricated in standard Si IC technology are demonstrated. Q-factors from three to eight and inductors up to 10 nH in the gigahertz range have been realized. Measurements on a five-pole maximally flat low-pass filter give midband insertion loss and -3 dB bandwidth close to the nominal design values of 2.25 dB and 880 MHz. >

433 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a virtual-harmonic-resistance-based active damping method for a parallel-inverter-based grid-interactive microgrid.
Abstract: This paper addresses the resonance problem in a parallel-inverter-based grid-interactive microgrid. Unlike the single grid-connected inverter system where the resonance frequency is mainly fixed by the inverter output LCL filter parameters, the parallel-inverter-based grid-interactive microgrid system presents a more challenging picture where inverter interactions will excite complex resonances at various frequencies. As a result, line currents of inverters can be severely distorted even when the control schemes and filter circuits are properly designed based on the single-inverter model. This paper first develops a microgrid model using discrete time-domain closed-loop Norton's equivalent circuit. Multiple resonances can then be evaluated with the developed model. To improve the microgrid power quality, this paper also designs a virtual-harmonic-resistance-based active damping method. The proposed damping method can be seamlessly incorporated into the conventional deadbeat control scheme through the direct control reference modification. Therefore, the active damping method is able to address both the transient and steady-state resonances within the deadbeat current control bandwidth. Simulation and experimental results are provided to validate the correctness of the developed resonance modeling and active damping methods.

424 citations

Book
16 Dec 1998
TL;DR: In this paper, the authors present an approach for the estimation of 1st and 2nd-order functions of LC ladder filters using Opamps, which is based on the Bessel-Thomson Delay Approximation Delay Equalization Frequency Transformations.
Abstract: Fundamentals Introduction Filter Characterization Types of Filters Steps in Filter Design Analysis Continuous-Time Filter Functions Stability Passivity for One- and Two-Port Networks Reciprocity The Approximation Problem Introduction Filter Specifications and Permitted Functions Formulation of the Approximation Problem Approximation to the Ideal Lowpass Filter Filters with Linear Phase: Delays Bessel-Thomson Delay Approximation Delay Equalization Frequency Transformations Design Tables of Passive LC Ladder Filters Impedance Scaling Predistortion Active Elements Introduction Ideal Controlled Sources Impedance Transformation (Generalized Impedance Converters and Inverters) Negative Resistance Ideal Operational Amplifier The Ideal Operational Transconductance Amplifier (OTA) Realization of 1st- and 2nd-Order Functions Using Opamps Introduction Realization of 1st-Order Functions The General 2nd-Order Filter Function Sensitivity of 2nd-Order Filters Realization of Biquadratic Functions Using SABs Realization of a Quadratic with a Positive Real Zero Biquads Obtained Using the Twin-Tee RC Network Two Opamp Biquads Three Opamp Biquads Realization of High-Order Functions Using Opamps Introduction Selection Criteria for High-Order Function Realizations Mutliparameter Sensitivity High-Order Function Realization Methods Cascade Connection of 2nd-Order Sections Mutli-Loop Feedback Filters Cascade of Biquartics Simulation of LC Ladder Filters Using Opamps Introduction Resistively Terminated Lossless LC ladder Filters Methods of LC Ladder Filter Simulation The Gyrator Generalized Impedance Converter FDNRs Complex Impedance Scaling Functional Simulation Wave Active Filters Introduction Wave Active Filters Wave Active Equivalents (WAE) Economical Wave Active Filters Sensitivity of WAFs Operation of WAFs at Higher Frequencies Complementary Transfer Functions Wave Simulation of Inductance Linear Transformation Active Filters (LTA Filters)

377 citations

Journal ArticleDOI
TL;DR: In this paper, several passive filter topologies used to interface voltage-source converters with the utility grid are reviewed and evaluated in terms of damping capability, stored energy in the passive components, and power loss in the damping circuit.
Abstract: In order to reduce size and cost, high-order passive filters are generally preferred in power converters to cancel out high-frequency harmonics caused by pulsewidth modulation. However, the filter resonance peaks may require the use of passive dampers to stabilize the interactions between the load and source impedances. Furthermore, the stabilizing effect is more difficult to be guaranteed for cost-optimized filters, which are characterized by low-inductance and high-capacitance passive components. In this paper, several passive filter topologies used to interface voltage-source converters with the utility grid are reviewed and evaluated in terms of damping capability, stored energy in the passive components, and power loss in the damping circuit. In addition, the influences of different switching frequencies of power converters on the passive filter design are discussed in the range 1–15 kHz. Illustrative design examples of the passive filters and experimental data are also provided.

369 citations

Book
01 Jan 1981
TL;DR: This book discusses filter design techniques, components Selection for LC and Active Filters, and how to select the Response Characteristic.
Abstract: Chapter 1: Introduction to Modern Network Theory Chapter 2: Selecting the Response Characteristic Chapter 3: Low-Pass Filter Design Chapter 4: High-Pass Filter Design Chapter 5: Bandpass Filters Chapter 6: Band-Reject Filters Chapter 7: Networks for the Time Domain Chapter 8: Refinements in LC Filter Design and the Use of Resistive Networks Chapter 9: Design and Selection of Inductors for LC Filters Chapter 10: Component Selection for LC and Active Filters Chapter 11: Normalized Filter Design Tables Chapter 12: Introduction to Digital Filters Chapter 13: Finite Impulse-Response Filters Chapter 14: Infinite Impulse-Response Filters Chapter 15: Multirate Digital Filters Chapter 16: Digital Filter Technology Chapter 17: Switched-Capacitor Filters Chapter 18: Introduction to Microwave Filters APPENDIX A: DISCRETE SYSTEMS MATHEMATICS APPENDIX B: SOFTWARE SUMMARY INDEX

354 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20237
202237
2021138
2020362
2019517
2018554