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Journal articles on the topic 'Lumped circuit'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Russer, J. A., F. Mukhtar, A. Baev, Y. Kuznetsov, and P. Russer. "Combined lumped element network and transmission line synthesis for passive microwave structures." Advances in Radio Science 9 (July 29, 2011): 95–98. http://dx.doi.org/10.5194/ars-9-95-2011.

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Abstract. Compact circuit models of electromagnetic structures are a valuable tool for embedding distributed circuits into complex circuits and systems. However, electromagnetic structures with large internal propagation delay are described by impedance functions with a large number of frequency poles in a given frequency interval and therefore yielding equivalent circuit models with a high number of lumped circuit elements. The number of circuit elements can be reduced considerably if in addition to capacitors, inductors, resistors and ideal transformers also delay lines are included. In this

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2

García-Sánchez, Francisco, Beatriz Romero, Denise Lugo-Muñoz, et al. "Modelling solar cell S-shaped I-V characteristics with DC lumped-parameter equivalent circuits a review." Facta universitatis - series: Electronics and Energetics 30, no. 3 (2017): 327–50. http://dx.doi.org/10.2298/fuee1703327g.

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This article reviews and appraises the dc lumped-parameter equivalent circuit models that have been proposed so far for representing some types of solar cells that can exhibit under certain circumstances a detrimental S-shaped concave deformation within the energy-producing fourth quadrant of their illuminated I-V characteristics. We first present a very succinct recollection of lumped-parameter equivalent circuits that are commonly used to model conventional solar cells in general. We then chronologically present and discuss lumped-parameter equivalent sub-circuits that, combined with convent

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3

Rosenbluth, M. N., and R. E. Waltz. "Strong lumped circuit solitons." Journal of Applied Physics 65, no. 9 (1989): 3698–705. http://dx.doi.org/10.1063/1.342597.

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4

Farooq, Sajid, Shareen Shafique, Zishan Ahsan, Olavo Cardozo, and Faiz Wali. "Tailoring the Scattering Response of Optical Nanocircuits Using Modular Assembly." Nanomaterials 12, no. 17 (2022): 2962. http://dx.doi.org/10.3390/nano12172962.

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Owing to the localized plasmon resonance of an ensemble of interacting plasmonic nanoparticles (NPs), there has been a tremendous drive to conceptualize complex optical nanocircuits with versatile functionalities. In comparison to modern research, there is still not a sufficient level of sophistication to treat the nanostructures as lumped circuits that can be adjusted into complex systems on the basis of a metatronic touchstone. Here, we present the design, assembly, and characterization of single relatively complex photonic nanocircuits by accurately positioning several metallic and dielectr

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5

Xu, Ke, Xing Chen, and Qiang Chen. "Non-quasi-static Effects Simulation of Microwave Circuits based on Physical Model of Semiconductor Devices." Applied Computational Electromagnetics Society 35, no. 9 (2020): 992–98. http://dx.doi.org/10.47037/2020.aces.j.350903.

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This work explores analyzing the non-quasistatic effects of a microwave circuit by employing a physical model-based field-circuit co-simulation method. Specifically, it uses the semiconductor physical model to characterize the semiconductor devices, and simulates the lumped circuit by cooperating semiconductor physical equations into Kirchhoff’s circuit equations. Then the lumped circuit simulation is hybridized with the finite-difference time-domain (FDTD) simulation by interfacing EM (electromagnetic) field quantities with lumped-element quantities at each timestep. Taken a microwave limiter

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6

Moss, Terry L., and Yinchao Chen. "Mesh analysis for extracting the S-parameters of lumped element RF and microwave circuits." International Journal of Electrical Engineering & Education 51, no. 4 (2014): 330–39. http://dx.doi.org/10.7227/ijeee.0005.

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This paper demonstrates the applicability of basic mesh current circuit analysis techniques, usually learned in the first year of engineering studies, to lumped element RF circuits, which are usually taught with more sophisticated analysis techniques. As an example, the S-parameters of the 90° lumped element hybrid coupler is derived using the traditional mesh current analysis, and compared to that of the distributed micro-strip response. The distributed transmission line coupler is transformed into equivalent lumped element PI sections, and then combined for the resulting lumped element coupl

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Qiao, Yaqiong, Zhiguo Liang, Jianjie Yu, Wu Duan, and Shuai Bai. "Verification and Analysis of Lumped-Circuit Approximate Models of Twisted-Stranded Cables for High-Speed Railway Signaling Systems." Journal of Nanoelectronics and Optoelectronics 17, no. 2 (2022): 324–34. http://dx.doi.org/10.1166/jno.2022.3202.

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To evaluate the transmission characteristics, anti-electromagnetic interference performance, and cable channel fault detection of multi-core twisted-stranded cables used in high-speed railway signaling systems, this study established a model for accurate twisted cable physical simulations. With the LEU-BSYYP cable, the finite element method (FME) software constructed a one twisted cycle length model and calculated the per-unit-length (pul) distribution parameters of the cable under high-frequency pulses. The purpose is to simulate long-distance twisted cables physically and analyze the factors

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8

Mlakar, J. "Lumped circuit symmetrical TLM node." Electronics Letters 28, no. 5 (1992): 497. http://dx.doi.org/10.1049/el:19920313.

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9

Matveenko, Valerii, Maksim Iurlov, Dmitrii Oshmarin, Nataliya Sevodina, and Nataliia Iurlova. "Modelling of vibrational processes in systems with piezoelements and external electric circuits on the basis of their electrical analogue." Journal of Intelligent Material Systems and Structures 29, no. 16 (2018): 3254–65. http://dx.doi.org/10.1177/1045389x18781025.

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The dissipative properties of electromechanical systems based on structure with elements made of piezomaterial can be controlled by attaching external electric circuits to the piezoelements. One can change electric circuit parameters in such a way as to ensure the greatest possible energy dissipation on an external electric circuit and, thereby, the best damping of the system’s specified oscillation frequency. Since the external electric circuits are a collection of elements with lumped parameters attached to a system with distributed parameters, the solution for such a system of electro-visco

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10

Liew, Hui Fang, Syed Idris Syed Hassan, Mohd Fareq bin Abd Malek, et al. "Design of Compact Composite Microstrip Low Pass Filter Using MEMS Technology." Applied Mechanics and Materials 754-755 (April 2015): 581–90. http://dx.doi.org/10.4028/www.scientific.net/amm.754-755.581.

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This paper presents the design technique of a compact composite microstrip filter operating at ultra high frequency (UHF) band and its fabrication using micro-electro mechanical system MEMS technology. The fringing compensation method is applied into the design of the microstrip line transformation from lumped element. The filter lumped circuits and microstrip line circuit were designed and simulated using Advanced Design Software (ADS) and fabricated on silicon substrates to obtain the best filter characteristic based on S-parameter. The measured and simulated results have achieved a good agr

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11

Li, Yue, Iñigo Liberal, Cristian Della Giovampaola, and Nader Engheta. "Waveguide metatronics: Lumped circuitry based on structural dispersion." Science Advances 2, no. 6 (2016): e1501790. http://dx.doi.org/10.1126/sciadv.1501790.

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Engineering optical nanocircuits by exploiting modularization concepts and methods inherited from electronics may lead to multiple innovations in optical information processing at the nanoscale. We introduce the concept of “waveguide metatronics,” an advanced form of optical metatronics that uses structural dispersion in waveguides to obtain the materials and structures required to construct this class of circuitry. Using numerical simulations, we demonstrate that the design of a metatronic circuit can be carried out by using a waveguide filled with materials with positive permittivity. This i

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12

Gaudreault, M., and M. G. Stubbs. "Lumped-element components for GaAs monolithic microwave integrated circuits." Canadian Journal of Physics 63, no. 6 (1985): 736–39. http://dx.doi.org/10.1139/p85-117.

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Gallium-arsenide monolithic microwave integrated circuits (GaAs MMIC's) promise the microwave circuit designer significant size, weight, and reliability advantages. Distributed and lumped matching techniques have been utilized previously in MMIC design with the latter offering greater bandwidth and smaller size. In this paper, experimental results for lumped interdigitated capacitors on a gallium-arsenide substrate are presented. Computer modelling in the frequency range 2–18 GHz was used to derive a set of design curves for these capacitors. These curves cover aspect ratios of w/s = 1 and w/s

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13

Todorov, Yanko, Pascal Desfonds, Cherif Belacel, Loïc Becerra, and Carlo Sirtori. "Three-dimensional THz lumped-circuit resonators." Optics Express 23, no. 13 (2015): 16838. http://dx.doi.org/10.1364/oe.23.016838.

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14

Sun, Jiamian, Haiwang Li, Sifan Wu, et al. "Broadband Lumped-Element Parameter Extraction Method of Two-Port 3D MEMS In-Chip Solenoid Inductors Based on a Physics-Based Equivalent Circuit Model." Micromachines 11, no. 9 (2020): 836. http://dx.doi.org/10.3390/mi11090836.

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Integrated 2D spiral inductors possess low inductance per unit area, which limits their application range. However, the state of investigation into the lumped-element parameter extraction method for integrated 3D in-chip multi-turn solenoid inductors, which possess higher inductance per unit area, is inadequate. This type of inductor can thus not be incorporated into fast computer-aided design (CAD)-assisted circuit design. In this study, we propose a broadband two-port physics-based equivalent circuit model for 3D microelectromechanical system (MEMS) in-chip solenoid inductors that are embedd

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15

Borodin, Vladimir N., Valery A. Kozlov, Evgeny A. Mikhalitsyn, and Alexander V. Sorokin. "Computer aided design of ferrite lumped element circulators." Physics of Wave Processes and Radio Systems 23, no. 4 (2021): 74–84. http://dx.doi.org/10.18469/1810-3189.2020.23.4.74-84.

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The results of integrity of narrowband and wideband lumped element circulators design methodology to the computer aided design system of microwave devices AWR Microwave Office are presented in the article. The calculation method of narrow band circulators circuits which consist of serious and shunt tuning capacities is investigated. The simple and visual method of wideband ferrite isolators optimize design based on circulation impedance calculation is described here. The results of design of the ultra wideband circulator with shunt capacity, serious resonant matching circuit and serious resona

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16

Leduc, Philippe, Didier Magnon, and Fabrice Guitton. "Experimental Modeling of Monolithic Resistors for Silicon ICS with a Robust Optimizer-Driving Scheme." Sultan Qaboos University Journal for Science [SQUJS] 7, no. 1 (2002): 71. http://dx.doi.org/10.24200/squjs.vol7iss1pp71-80.

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Today, an exhaustive library of models describing the electrical behavior of integrated passive components in the radio-frequency range is essential for the simulation and optimization of complex circuits. In this work, a preliminary study has been done on Tantalum Nitride (TaN) resistors integrated on silicon, and this leads to a single p-type lumped-element circuit. An efficient extraction technique will be presented to provide a computer-driven optimizer with relevant initial model parameter values (the "guess-timate"). The results show the unicity in most cases of the lumped element determ

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17

Suzuki, Satoshi, Qiaowei Yuan, and Qiang Chen. "Impedance matching approach of L-section circuit with ohmic loss in reactive components." Wireless Power Transfer 5, no. 1 (2018): 64–74. http://dx.doi.org/10.1017/wpt.2017.21.

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Impedance matching is very important to improve transmission efficiency not only for wireless communication but also for wireless power transfer. Lumped reactive elements are usually used in the impedance matching circuit. These reactive components such as inductors and capacitors have ohmic loss. An exact approach to design the lumped matching circuit at the presence of the ohmic loss is derived in this paper. Moreover, the condition for selection of impedance matching topology is deduced not only for lossless case but also for lossy case. Finally, the effect of the ohmic loss in the impedanc

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18

RIAZA, RICARDO. "GRAPH-THEORETIC CHARACTERIZATION OF BIFURCATION PHENOMENA IN ELECTRICAL CIRCUIT DYNAMICS." International Journal of Bifurcation and Chaos 20, no. 02 (2010): 451–65. http://dx.doi.org/10.1142/s0218127410025533.

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This paper addresses bifurcation properties of equilibria in lumped electrical circuits. The goal is to tackle these properties in circuit-theoretic terms, characterizing the bifurcation conditions in terms of the underlying network digraph and the electrical features of the circuit devices. The attention is mainly focused on so-called singular bifurcations, resulting from the semistate (differential-algebraic) nature of circuit models, but the scope of our approach seems to extend to other types of bifurcations. The bifurcation analysis combines different tools coming from graph theory (such

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19

Fang, Yong, Bao Qing Zeng, Wen Tao Zhang, and Pu Wang. "Millimeter Wave Characterization of Wire Bond Transitions for W-Band Electromagnetic Sensor." Applied Mechanics and Materials 738-739 (March 2015): 103–6. http://dx.doi.org/10.4028/www.scientific.net/amm.738-739.103.

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This paper presents millimeter wave characterization and models of various wire bond transitions between chip’s ground-signal-ground pad (GSG) and microstrip (MS), include single-wire-nomatch MS-GSG transition, double-wire-nomatch MS-GSG, single-wire-match MS-GSG transition, and double-wire-match MS-GSG transition. It also presents the 3D full-wave electromagnetic simulation. Analysis results show that the double-wire-match MS-GSG transition’s characteristic is better than other three transitions in the whole W band. The accurate extracted parameter values are used for the lumped equivalent ci

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20

Machczynski, Wojciech, Krzysztof Budnik, and Jan Szymenderski. "Assessment of d.c. traction stray currents effects on nearby pipelines." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 35, no. 4 (2016): 1468–77. http://dx.doi.org/10.1108/compel-12-2015-0477.

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Purpose – dc electrified traction systems are a potential source of stray currents. The purpose of this paper is to evaluate the harmful effects (electrolytic corrosion) that an electrified railway has on nearby earth return circuits (e.g. pipelines). Design/methodology/approach – The electric circuit approach, based on the earth return circuit theory, to model stray currents interference on extended structures is presented. An exact method of calculation is applicable to any dc railway system in which tracks can be represented by a single earth-return circuit (equivalent rail) with current en

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21

Singh, Dr Paramjeet. "Modeling of Microstrip line Gap Discontinuity on Multilayer Substrate." International Journal for Research in Applied Science and Engineering Technology 12, no. 11 (2024): 561–66. http://dx.doi.org/10.22214/ijraset.2024.65071.

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In this paper, the modeling of microstrip line gap discontinuity on multilayer semiconductor substrate is presented. The reflection coefficient and transmission coefficient are computed from the equivalent lumped circuit model of microstrip line gap discontinuity. The lumped circuit elements- capacitance, inductance and resistance are calculated using closed-form expressions in term of the gap discontinuity, width of microstrip line and dielectric substrate thickness. Static Spectral Domain Analysis (SDA) method is used to compute characteristic impedance of microstrip line.

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22

Ez-zaki, Fatima, Khaoula Ait Belaid, Sarosh Ahmad, et al. "Circuit Modelling of Broadband Antenna Using Vector Fitting and Foster Form Approaches for IoT Applications." Electronics 11, no. 22 (2022): 3724. http://dx.doi.org/10.3390/electronics11223724.

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Computation of the broadband antenna impedance behavior requires the wideband lumped equivalent circuit. This work aims to provide a comprehensive study of broadband antenna equivalent circuit models over broad frequency ranges for Internet of Things (IoT) applications using multiple approaches. The first approach is a Foster approximation, which is based on the antenna-simulated scattering parameters and impedance data. The second concerns a vector-fitting fitting approximation, which is based on the antenna-simulated impedance/admittance data. The studied antenna is modeled based on the radi

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23

Boucher, R. F., and E. E. Kitsios. "Simulation of Fluid Network Dynamics by Transmission Line Modelling." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 200, no. 1 (1986): 21–29. http://dx.doi.org/10.1243/pime_proc_1986_200_090_02.

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The classical solution to the acoustic wave equation reveals decoupled left- and right-going waves carrying pressure and flow. Using a variant of these waves representing power, it is shown that such decoupled waves permit fluid transmission lines in circuits to be modelled simply as pure time delays. It is also demonstrated that lumped inertance and capacitance may be modelled as transmission line stubs. Thus all dynamic elements in a circuit are represented as pure time delays and the only computations required are of wave scattering at junctions. Linear resistance is most easily admitted, e

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24

Lee, Jaewoo, Jong-Pil Im, Jeong-Hun Kim, Sol-Yee Lim, and Seung-Eon Moon. "Wafer-Level-Based Open-Circuit Sensitivity Model from Theoretical ALEM and Empirical OSCM Parameters for a Capacitive MEMS Acoustic Sensor." Sensors 19, no. 3 (2019): 488. http://dx.doi.org/10.3390/s19030488.

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We present a simple, accurate open-circuit sensitivity model based on both analytically calculated lumped and empirically extracted lumped-parameters that enables a capacitive acoustic sensor to be efficiently characterized in the frequency domain at the wafer level. Our mixed model is mainly composed of two key strategies: the approximately linearized electric-field method (ALEM) and the open- and short-calibration method (OSCM). Analytical ALEM can separate the intrinsic capacitance from the capacitance of the acoustic sensor itself, while empirical OSCM, on the basis of one additional test

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Usui, Yuzo. "Difference in Concept of Lumped Constant Circuit and Distributed Constant Circuit." Journal of The Japan Institute of Electronics Packaging 21, no. 3 (2018): 244–49. http://dx.doi.org/10.5104/jiep.21.244.

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26

Singh, Dr Paramjeet. "Modeling and Analysis of Open-End Microstrip line Discontinuity on Multilayer Semiconductor Substrate for Microwave Integrated Circuits." International Journal for Research in Applied Science and Engineering Technology 13, no. 2 (2025): 999–1004. https://doi.org/10.22214/ijraset.2025.67022.

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In this paper, the modelling and analysis of open-end microstrip line discontinuity on multilayer semiconductor substrate is presented. The equivalent lumped circuit model is used to compute the frequency dependent reflection coefficient from the open-end microstrip line discontinuity. The lumped circuit elements, capacitance, inductance and resistance, are computed using closed-form expressions in term of the width of microstrip line discontinuity and thickness of the dielectric substrate. To compute the characteristic impedance of microstrip line on multilayer dielectric substrate, static Sp

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27

Twumasi, Baidenger Agyekum, and Jia-Lin Li. "An equivalent circuit model of a rectangular bracket shaped DGS and its microwave filter applications." Journal of Electrical Engineering 70, no. 1 (2019): 32–38. http://dx.doi.org/10.2478/jee-2019-0004.

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Abstract A lumped-LC equivalent circuit to model a novel rectangular bracket shaped defected ground structure (DGS) is presented in this paper. The presented equivalent circuit can accurately predicate the frequency responses, in terms of the magnitude and phase responses of S parameters, of the studied DGS. The lumped LC parameters of the presented model are extracted based on a unit cell of the DGS. Further, the model is found to be applicable in microwave engineering, including microwave filter designs. Some design examples are presented and examined. The studied DGS based microwave filters

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28

Kim, Sanghyun, Won-Sang Yoon, Jongsik Lim, and Sang-Min Han. "Accurate Microwave Circuit Co-Simulation Method Based on Simplified Equivalent Circuit Modeling." Micromachines 14, no. 10 (2023): 1847. http://dx.doi.org/10.3390/mi14101847.

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A new co-simulation method is proposed for active devices and electromagnetic resonant circuits at microwave frequency range. For the measured and extracted device parameters, three steps of equivalent circuit models are processed of the general, simplified, and EM RLC models. To overcome the limited lumped element simulation in an electromagnetic simulator, the simplified equivalent circuit model is established by mathematical computation. The co-simulation procedures are described and experimentally verified for commercial diodes. The application circuit is designed and implemented using the

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29

Berzan, Vladimir. "APPLICATION OF THE FINITE DIFFERENCE METHOD TO CALCULATION OF DYNAMIC PROCESSES IN LONG ELECTRICAL LINES." Journal of Engineering Science XXVI (4) (December 23, 2019): 45–66. https://doi.org/10.5281/zenodo.3591586.

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The electrical circuit structure includes components with concentrated and distributed parameters. This creates difficulties in analyzing the dynamic processes, which are described by differential equations, including those with partial derivations. This paper deals with the process of applying equations with partial derivatives (telegraph equations) for the analysis of transient processes using the numerical method of uninterrupted computation. The initial and limit conditions needed to obtain numerical solutions of the transient processes in circuits with the complex variable load have been

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30

Horyachko, Vsevolod, Orest Hamola, and Taras Ryzhyi. "Analysis of magnetic fields of electrical devices based on their circuit models." Computational Problems of Electrical Engineering 11, no. 1 (2021): 7–11. http://dx.doi.org/10.23939/jcpee2021.01.007.

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he article deals with an analysis of magnetic fields of electric machines and electromagnetic devices on the basis of their circuit mathematical models. The magnetic systems of electrical devices in these models are presented in the form of planar nonlinear magnetic circuits with lumped elements. The parameters of these elements are determined on the basis of geometric dimensions taking into account the design features of the devices and the physical parameters of the environment.

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31

Ma, Yunhan, Jingxian Liu, Junkai Huang, and Wanling Deng. "An Analytical Algorithm for Extracting Model Parameters in a Lumped-Parameter Equivalent Circuit of Solar Cells." Energies 15, no. 6 (2022): 2221. http://dx.doi.org/10.3390/en15062221.

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An analytical algorithm is proposed to extract model parameters in a single-diode lumped-parameter equivalent circuit of solar cells. In the calculation process, six relevant factors in the datasheet are necessary to establish a set of transcendental equations. This set of equations is analyzed and solved to acquire accurate values for the model parameters, by retaining equation items with important physical significance. Furthermore, based on simulations and reconstruction experiments, verifications show the accuracy and universality of the algorithm. Therefore, the proposed algorithm can be

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32

Arjona L., M. A., and D. C. MacDonald. "Lumped modelling of open-circuit turbogenerator operational parameters." IEEE Transactions on Energy Conversion 14, no. 3 (1999): 347–53. http://dx.doi.org/10.1109/60.790881.

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Gonnard, P., P. M. Schmitt, and M. Brissaud. "New equivalent lumped electrical circuit for piezoelectric transformers." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 53, no. 4 (2006): 802–9. http://dx.doi.org/10.1109/tuffc.2006.1611040.

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Gonnard, P., P. M. Schmitt, and M. Brissaud. "New equivalent lumped electrical circuit for piezoelectric transformers." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 53, no. 4 (2006): 802–9. http://dx.doi.org/10.1109/tuffc.2006.1621508.

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Esteves, Josué, Libor Rufer, Didace Ekeom, and Skandar Basrour. "Lumped-parameters equivalent circuit for condenser microphones modeling." Journal of the Acoustical Society of America 142, no. 4 (2017): 2121–32. http://dx.doi.org/10.1121/1.5006905.

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Robiscoe, R. T., A. Kadish, and William B. Maier II. "A lumped circuit model for transient arc discharges." Journal of Applied Physics 64, no. 9 (1988): 4355–63. http://dx.doi.org/10.1063/1.341284.

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Dong, Mei, Cui-Ling Li, Wu-Fa Chen, Guo-Qian Li, and Kang-Jia Wang. "A new RLC series-resonant circuit modeled by local fractional derivative." Thermal Science 25, no. 6 Part B (2021): 4569–76. http://dx.doi.org/10.2298/tsci2106569d.

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The local fractional derivative has gained more and more attention in the field of fractal electrical circuits. In this paper, we propose a new ?-order RLC** resonant circuit described by the local fractional derivative for the first time. By studying the non-differentiable lumped elements, the non-differentiable equivalent imped?ance is obtained with the help of the local fractional Laplace transform. Then the non-differentiable resonant angular frequency is studied and the non-differentiable resonant characteristic is analyzed with different input signals and parameters, where it is observed

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Grigoryan, Sergey. "Magnetoelastic Sensors Calculation with a Complex Stress of State in the Magnetic Circuit." Известия высших учебных заведений. Электромеханика 66, no. 1 (2023): 25–30. http://dx.doi.org/10.17213/0136-3360-2023-1-25-30.

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The article considers a method for calculating magnetoelastic sensors, in which the magnetic permeability of the mag-netic circuit material is a tensor, the increments of its components being proportional to the components of the me-chanical stress tensor. The dependence between the components of stress tensors and the magnetic permeability incre-ments is linear and it is described by the two parameters of magnetoelastic sensitivity which are determined experi-mentally for a specific material, using a special technique. The increment of induction at the point of the magnetic circuit is proport

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BACHA, MANSOUR. "DESIGN AND SIMULATION OF S-BAND MICROWAVE AMPLIFIER FOR SATELLITE COMMUNICATIONS SYSTEM." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 69, no. 3 (2024): 298–302. http://dx.doi.org/10.59277/rrst-ee.2024.69.3.7.

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This paper presents a novel design of S-band monolithic microwave integrated circuit (MMIC) amplifiers based on GaAs MESFET HFET-1102 transistors used in radiofrequency (RF) and microwave communications systems. Based on the Chebyshev gain response, an analytical method is used to design a two-stage lumped microwave amplifier. The matching networks constituted by lumped elements are transformed into T inductive networks, and the resulting amplifier is optimized using RF simulator software. In the following step, the lumped optimized amplifier is transformed into a distributed amplifier and imp

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Zhong, Hui, Yuheng Zuo, Runze Wang, Li Zhang, and Xiaoshan Ouyang. "Accurate Electromagnetic Force Analysis of Offshore Wind Power Transformer Windings Based on Fractional Order Lumped Parameter Model." Symmetry 15, no. 9 (2023): 1768. http://dx.doi.org/10.3390/sym15091768.

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Accurate calculation of the electromagnetic force distribution of transformer windings under different loads and fault conditions is of great significance for transformer maintenance, condition evaluation and life prediction. Due to the influence of offshore wind power systems, offshore wind power transformers have high harmonic content and large changes in load rates, which can easily cause the coil destabilization, winding deformation or even damage because of the uneven distribution of the electromagnetic force. To improve the accuracy of electromagnetic force calculation, this paper propos

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King, Charles B. "Microphone vibration sensitivity: Frequency response, measurement error, and usage of measured responses in lumped element simulations." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A107. http://dx.doi.org/10.1121/10.0018323.

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Microphones are designed to respond to acoustic pressure fields, but they can also be excited by external sources of mechanical vibration. In hearing aids, feedback is a difficult problem to resolve due to the high gain used to amplify sounds. A new method to measure a microphone’s “intrinsic vibration sensitivity” was introduced at the 183rd ASA conference in Nashville. This paper will describe details of a practical measurement and how these details impact measurement error. It will demonstrate how the measured response canbe integrated into lumped circuit models for analysis in SPICE or FEA

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Vida, Hrvoje, Željko Hederić, Željko Špoljarić, and Tin Benšić. "A Transformer with Increased Leakage Flux for Didactic Considerations on Magnetic Circuits." International journal of electrical and computer engineering systems 8, no. 1 (2017): 27–32. http://dx.doi.org/10.32985/ijeces.8.1.4.

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In this paper, we present basics of modeling of complex magnetic circuits in electromagnetic devices for the purpose of didactic considerations. In order to help students better understand the physical issues in a magnetic field, an elementary example of the magnetic field in the coil depending on magnetic core construction has been given. The use of modern software tools for numerical calculation of magnetic fields (FEM) provides easier visualization of the problem and calculation of magnetic circuit parameters for magnetic circuit lumped models by using reluctance. The paper presents an educ

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Tian, Yu, Wen-Bo Geng, Shao-Hui Wang, and Kang-Jia Wang. "On a fractal RLC-parallel resonant circuit modeled within the local fractional derivative." Thermal Science 28, no. 4 Part B (2024): 3505–10. http://dx.doi.org/10.2298/tsci2404505t.

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In recent years, the theory of local fractional calculus has been widely used in the description of the fractional circuits. This paper presents a fractal RLC-paral?lel resonant circuit (FRLC-PRC) using the local fractional derivative (LFD). The FRLC-PRC is modeled by studying the non-differentiable (ND) lumped elements, then the ND conductance is obtained with the help of the local fractional Laplace transform (LFLT) and the ND parallel-resonant angular frequency (ND PRAF) is analyzed. It is found that the FRLC-PRC becomes the ordinary one when the frac?tional order ? = 1. The obtained result

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Lee, Gi-Young, Min-Shin Cho, and Rae-Young Kim. "Lumped Parameter Modeling Based Power Loop Analysis Technique of Power Circuit Board with Wide Conduction Area for WBG Semiconductors." Electronics 10, no. 14 (2021): 1722. http://dx.doi.org/10.3390/electronics10141722.

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With the development of wide-bandgap (WBG) power semiconductor technology, such as silicon carbide (SiC) and gallium nitride (GaN), the technology of power converters with high efficiency and high-power density is rapidly developing. However, due to the high rate-of-rise of voltage (dv/dt) and of current (di/dt), compared to conventional Si-based power semiconductor devices, the reliability of the device is greatly affected by the parasitic inductance component in the switching loop. In this paper, we propose a power loop analysis method based on lumped parameter modeling of a power circuit bo

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Kumar, Abhishek, Dileep Kumar Upadhyay, and Srikanta Pal. "A compact parallel coupled meander lines shaped composite right/left-handed transmission line (CRLH-TL) based symmetric quasi-0 dB coupler." Frequenz 74, no. 9-10 (2020): 295–307. http://dx.doi.org/10.1515/freq-2019-0165.

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AbstractIn this paper, parallel coupled meander lines (PCML) composite right/left-handed transmission line (CRLH-TL) based symmetrical quasi-0 dB coupled-line coupler is presented. Proposed coupler shows measured backward wave coupling level of 0.81 dB at frequency of 6.17 GHz with 3 dB fractional bandwidth (FBW) of 12.64%. Throughout the 3 dB frequency range (5.78–6.56 GHz), isolation and insertion loss of the coupler is better than 24 dB. Overall size of the proposed coupler is 19.6 × 12.1 mm. An equivalent lumped LC circuit model of the coupler is demonstrated. Measured results of the coupl

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Gambo A., Aminu, S. F. Kolawale, Sani Saminu, Ali Danladi, and Adamu Halilu Jabire. "Circuit Modeling of Dual Band MIMO Diversity Antenna for LTE and X-Band Applications." Jurnal Ilmiah Teknik Elektro Komputer dan Informatika 9, no. 3 (2023): 511–21. https://doi.org/10.26555/jiteki.v9i3.26272.

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This paper presents a study on developing a dual-band antenna equivalent circuit model for X-Band and LTE applications. MIMO antennas play a crucial role in modern wireless communication systems, and understanding their impedance behavior is essential. This work proposes a dual-band lumped equivalent circuit model, utilizing gradient optimization based on antenna-simulated S-parameters in Advanced Design System (ADS). The four radiating elements of the MIMO antenna are accurately modeled, considering their geometry and the defected ground structure (DGS) effect, which enhances the antenna's is

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Zhao, Bin, and Gang Wang. "Equivalent Circuit of a Planar Transformer Used for TWTA." Applied Mechanics and Materials 644-650 (September 2014): 3564–67. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.3564.

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In this paper, application of planar transformers in TWTA (Travelling-wave Tube Amplifier) is investigated and a method of equivalent circuit is used to study performance of planar transformers. The lumped parameters of planar transformers are extracted by FEM (Finite Element Method).

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Benato, Roberto, Giovanni Rinzo, and Michele Poli. "Overcoming the Limits of the Charge Transient Fault Location Algorithm by the Artificial Neural Network." Energies 12, no. 4 (2019): 722. http://dx.doi.org/10.3390/en12040722.

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In this paper, two algorithms for single-ended fault location are presented with reference to the unearthed sub-transmission Italian grid (with a voltage level of 60 kV). Both algorithms deal with the correlation between the ground capacitance charging frequency of sound phases and the fault position. In the former, the frequency response of a lumped parameter circuit in the Laplace domain is linked to the fault distance. With such a simplified lumped parameter circuit, the average error in locating a phase-to-ground (PtG) short circuit is 5.18% (total overhead line length equal to 60 km). Sin

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Parra-Rodriguez, A., and I. L. Egusquiza. "Geometrical description and Faddeev-Jackiw quantization of electrical networks." Quantum 8 (September 9, 2024): 1466. http://dx.doi.org/10.22331/q-2024-09-09-1466.

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In lumped-element electrical circuit theory, the problem of solving Maxwell&apos;s equations in the presence of media is reduced to two sets of equations, the constitutive equations encapsulating local geometry and dynamics of a confined energy density, and the Kirchhoff equations enforcing conservation of charge and energy in a larger, topological, scale. We develop a new geometric and systematic description of the dynamics of general lumped-element electrical circuits as first order differential equations, derivable from a Lagrangian and a Rayleigh dissipation function. Through the Fadde

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Mukhtar, F., Y. Kuznetsov, and P. Russer. "Network modelling with Brune's synthesis." Advances in Radio Science 9 (July 29, 2011): 91–94. http://dx.doi.org/10.5194/ars-9-91-2011.

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Abstract. Network modelling of general, lossy or lossless, one-port and symmetric two-port passive electromagnetic structures in systematic manner is presented. Rational function representation of the numerical data of Z- or Y-parameters is obtained with the use of Vector Fitting procedure. A systematic strategy for obtaining equivalent lumped element circuit from the rational function, applying Brune's circuit synthesis, is also presented.

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