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Journal articles on the topic 'Inductor design'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 March 2023

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1

Gao, Song. "Coupled Inductor Design of Contactless Power Transfer System." Advanced Materials Research 503-504 (April 2012): 1190–93. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1190.

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Paper introduces a high-frequency electromagnetic induction coupling principle to achieve contactless power transfer system, and analyzes the role of the coupled inductor coil in the system. By studying a variety of coupled inductor coil winding mode coupling theory, comparing the receiver coil movable range and the coil geometry size, this paper analyzes the pros and cons of the various coil mode in certain applications and sums up the general law the winding-coupled inductors to be considered and followed.

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2

Lazarus, Nathan, Chris D. Meyer, and Sarah S. Bedair. "Stretchable Inductor Design." IEEE Transactions on Electron Devices 62, no. 7 (July 2015): 2270–77. http://dx.doi.org/10.1109/ted.2015.2431221.

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3

Farooq, Muhammad, Bilal Amin, Adnan Elahi, William Wijns, and Atif Shahzad. "Planar Elliptical Inductor Design for Wireless Implantable Medical Devices." Bioengineering 10, no. 2 (January 23, 2023): 151. http://dx.doi.org/10.3390/bioengineering10020151.

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Wireless implantable medical devices (WIMDs) have seen unprecedented progress in the past three decades. WIMDs help clinicians in better-understanding diseases and enhance medical treatment by allowing for remote data collection and delivering tailored patient care. The wireless connectivity range between the external reader and the implanted device is considered one of the key design parameters in WIMD technology. One of the common modes of communication in battery-free WIMDs is inductive coupling, where the power and data between the reader and the implanted device are transmitted via magnetically coupled inductors. The design and shape of these inductors depend on the requirements of the application. Several studies have reported models of standard planar inductors such as circular, square, hexagonal, and octagonal in medical applications. However, for applications, constrained by narrow implantable locations, elliptical planar inductors may perform better than standard-shaped planar inductors. The aim of this study is to develop a numerical model for elliptical inductors. This model allows for the calculation of the inductance of the elliptical planar inductor and its parasitic components, which are key design parameters for the development of WIMDs powered by inductive coupling. An area transformation technique is used to transform and derive elliptical inductor formulas from standard circular inductor formulas. The proposed model is validated for various combinations of the number of turns, trace width, trace separation, and different inner and outer diameters of the elliptical planar inductor. For a thorough experimental validation of the proposed numerical model, more than 75 elliptical planar inductors were fabricated, measured, and compared with the numerical output of the proposed model. The mean error between the measured inductor parameters and numerical estimates using the proposed model is <5%, with a standard deviation of <3.18%. The proposed model provides an accurate analytical method for estimating and optimizing elliptical planar inductor parameters using a combination of current sheet expression and area transformation techniques. An elliptical planar inductor integrated with a sensing element can be used as a wireless implant to monitor the physiological signal from narrow implantation sites.

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4

Stojanovic, Goran, Ljiljana Zivanov, and Mirjana Damnjanovic. "Optimal design of circular inductors." Facta universitatis - series: Electronics and Energetics 18, no. 1 (2005): 57–70. http://dx.doi.org/10.2298/fuee0501057s.

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The scope of this work is to introduce a software tool for optimization of circular spiral inductors. It is based on compact model, where the physical behavior is described through analytical expressions in geometric programming (GP) form. This paper describes three significant innovations (a) optimization of circular inductor via GP, (b) new expressions for inductance and Q-factor in GP form, (c) globally optimal trade-off curves between maximum self-resonant frequency and inductance values or minimum inductor area and inductance values. The proposed optimization algorithm is flexible because the designers of RF integrated circuits can easily optimize the circular inductor for a desired performance.

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5

Novickij, J., and N. Višniakov. "The Application of Composite Materials in Pulsed Inductor Design." Solid State Phenomena 113 (June 2006): 545–48. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.545.

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The multilayer construction of metal-matrix Cu-Nb microcomposite wire wound Zylon-epoxy composite reinforced inductor is analyzed. Inductor geometry was verified analytically to find the maximal available value of a magnetic field. For comparison, the soft copper wire wound inductor was made by the same geometry and technology and both inductors were investigated at room and liquid nitrogen temperatures. Experimental results were compared with calculated data. The acceptable agreement of calculated and measured data for soft copper wire wound inductor and the significant decrease of amplitude and distortions of sinus shape pulse due to weak heat dissipation of metal-matrix Cu-Nb wire wound inductor took place.

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6

Muneeswaran, Dhamodaran, Jegadeesan Subramani, Thanapal Pandi, Navaneethan Chenniappan, and Meenatchi Shanmugam. "Modelling of Different On-chip Inductors for Radio Frequency Integrated Circuits." Proceedings of the Bulgarian Academy of Sciences 75, no. 10 (October 30, 2022): 1491–98. http://dx.doi.org/10.7546/crabs.2022.10.12.

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This paper presents a typical frequency-dependent modelling of different on-chip inductors for RFICs design problems. Modern RF circuits often feature on-chip inductors required by modern circuit design. A comparison of different inductor geometrics includes a planar spiral inductor and novel multilayer inductors are analyzed. An electromagnetic model with fewer assumptions than empirical equations and higher efficiency than full-field solvers would be welcome. So would facile comparisons of different inductor structures. This paper describes recent work on the electromagnetic modelling of on-chip inductor structures, applied to the comparison of inductor geometries, including the traditional spiral inductor and a novel multilayer inductor. The electromagnetic modelling of the investigative model is also presented.

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7

Stupin, A. O., D. V. Rogova, E. A. Nozdrenko, V. V. Kukartsev, A. I. Cherepanov, and A. E. Stashkevich. "Design of inductors for the installation of induction soldering of pipeline joints in the oil and gas industry." Journal of Physics: Conference Series 2094, no. 4 (November 1, 2021): 042017. http://dx.doi.org/10.1088/1742-6596/2094/4/042017.

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Abstract The article discusses the use of induction brazing for connecting oil and gas pipelines. The rationale for the choice of induction brazing in the oil and gas industry is considered. The work calculates the main parameters of the inductor. On the basis of calculations, using a mathematical apparatus, a schematic diagram of an inductor with a diameter of 90 mm is created for installing induction soldering. It is proposed to use and develop inductors of various diameters (60, 90 and 135 mm) to create an induction unit that allows connecting pipelines of oil and gas equipment in order to increase the reliability of equipment and the efficiency of oil and gas production and processing.

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8

Min, Jinkun, Guangyu Zhu, Yidan Yuan, and Jingquan Liu. "COMSOL Simulation for Design of Induction Heating System in VULCAN Facility." Science and Technology of Nuclear Installations 2021 (August 19, 2021): 1–12. http://dx.doi.org/10.1155/2021/9922503.

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The experimental facility VULCAN was setup to study the fuel-coolant interaction (FCI) phenomena in a postulated severe accident of light water reactors. The heating system is important for the facility to prepare molten material in a crucible. This article is concerned with the design of the heating system, which applies electromagnetic induction heating method. The COMSOL code was employed to simulate the induction heating characteristics of a graphite crucible under different current and frequency of the work coil (inductor). Given a frequency, the relationship between the crucible’s average temperature and the inductor’s current is obtained, which is instrumental to select the power supply of the induction heating system. Meanwhile, the skin effect of induction heating is analyzed to guide the choice of frequency and inductor of the heating system. According to the simulation results, the induction heating system of frequency 47 kHz is suitable for the experiment, with a good agreement in temperature between the measured and the predicted.

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9

Boo, K. K., Ovinis Mark, and Nagarajan Thirumalaiswamy. "Thermal and Magnetisms Design of an Inductor Using Finite Element Method." Advanced Materials Research 622-623 (December 2012): 130–35. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.130.

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Thermal stress points in an inductor can cause insulation deterioration and ageing, leading to winding faults, while high magnetic flux causes interference. In this paper, the thermal and magnetic behaviors of inductors with different winding geometries are investigated using the Finite Element Method (FEM) based on 2-Dimension and 3-Dimension model of an inductor. Inductors with different winding geometries have different thermal envelopes and the geometry with the slowest thermal transition has fewer thermal stress points potentially reducing winding faults at the conductor. Furthermore, slow thermal transition would result in greater magnetic field coverage with no magnetic flux outside boundary of the inductor.

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10

Tacca, Hernan Emilio. "Ferrite Toroidal Inductor Design." IEEE Latin America Transactions 7, no. 6 (December 2009): 630–35. http://dx.doi.org/10.1109/tla.2009.5419359.

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11

Dhamodaran, Muneeswaran, Subramani Jegadeesan, and Arunachalam Murugan. "Design of a multilayer on-chip inductor by computational electromagnetic modelling." Journal of Electrical Engineering 70, no. 5 (September 1, 2019): 379–85. http://dx.doi.org/10.2478/jee-2019-0069.

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Abstract This paper presents a design of typical multilayer on-chip inductor to determine the layout parameters of the desired inductance value of electromagnetic modeling. The inductance and quality factor of multilayer on-chip spiral inductors are determined by its layout parameters and technological parameters. These layout parameters must be optimized to obtain the maximum quality factor at the desired frequency of operation. An electromagnetic model with fewer assumptions than empirical equations and higher efficiency than full-field solvers would be welcome. So would facile comparisons of different inductor structures. This paper describes recent works on the electromagnetic modeling of on-chip inductor structures applied to the comparison of inductor geometries, including the traditional spiral inductor and a novel multilayer inductor. The electromagnetic modeling of the investigative model is presented. The modeling and simulation are implemented using the method of moments. To simulate the proposed algorithm, the EM Simulator software is used.

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12

Li, Dong Liang, and Xiao Guang Yang. "Optimized Design of Induction Cooker by Numerical Computation and Experimental Investigation." Applied Mechanics and Materials 313-314 (March 2013): 1025–29. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.1025.

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Optimized design of litz-wire inductor and optimal choose of working frequency is required to improve the efficiency of induction cooker. A new formula to calculate the dynamic inductance is deduced from the basic definition of the inductance, considering the case that the pot may be lifted with the inductor in working state. A method to calculate the loss of the inductor and to achieve the optimized the diameter of the litz wire by numerical calculation is presented. Take advantage of the calculation results, the resonant frequency for the induction heating system can be determined. An experimental prototype was built to verify the calculation method.

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13

Schlesselmann, D., C. Krause, and M. Schaudig. "Effect of Inductor Design on the Hardness after Induction Hardening using Line Inductors." HTM Journal of Heat Treatment and Materials 73, no. 4 (August 16, 2018): 202–10. http://dx.doi.org/10.3139/105.110354.

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14

Kukartsev, V. A., A. I. Cherepanov, V. V. Kukartsev, A. V. Kuznetsov, A. N. Minkin, and A. V. Egorov. "Design of energy efficient inductors for connecting pipelines of oil and gas equipment." Journal of Physics: Conference Series 2094, no. 4 (November 1, 2021): 042007. http://dx.doi.org/10.1088/1742-6596/2094/4/042007.

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Abstract The article deals with the problem of soldering the installation connections of equipment using induction heating methods. The analysis of the subject area has been carried out. Methods for obtaining permanent connections of oil and gas equipment are considered. A comparison of the characteristics of energy sources for welding is carried out, and the characteristics of the efficiency of methods for obtaining permanent joints are also given. Induction brazing is considered as an alternative method for obtaining permanent joints, namely, an inductor for soldering fittings and flanges. The calculations of the required power of the equipment, used for soldering the field connections of the equipment, have been made. As a result of the work, the authors calculated the main parameters of the inductor for soldering the flanges of the fittings and designed sets of inductors with a diameter of Dy = 40 mm, Dy = 50 mm, Dy = 80 mm for soldering the flanges of the fittings.

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15

Khalid, N., N. I. M. Nor, W. M. W. Norhaimi, Zaliman Sauli, and Vithyacharan Retnasamy. "Design and Analysis on Symmetric MEMS Inductor." Applied Mechanics and Materials 815 (November 2015): 364–68. http://dx.doi.org/10.4028/www.scientific.net/amm.815.364.

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This paper presents the design and analysis of new proposed topology micro-electro-mechanical system (MEMS) inductor. This new symmetric MEMS inductor is designed to reduce the total length of the conductor strip and hence reduce the resistance of the metal tracks. This results significant increases in the quality (Q) factor of the inductor. In this paper, the MEMS inductor is designed using CoventorWare®, which is powerful software for MEMS computer aided design (CAD), modeling and simulation. Results indicate that new symmetric inductor topology has thehighest Q-factor and it hasbeenimproved bytwo times compared to circular inductor. The analysis revealed that area of the symmetric inductor has reduced by37.5% compared to the circular inductor. Result has proved that the reduction of length of the conductor strip has reduced the resistance of the metal tracks and results in a high Q-factor inductor.

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16

Matsuki, H., H. Miyazawa, K. Nadehara, M. Yamaguchi, K. Murakami, and T. Yamamoto. "Design of miniaturized cloth inductor." IEEE Transactions on Magnetics 25, no. 5 (1989): 3994–96. http://dx.doi.org/10.1109/20.42501.

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17

Jabr, R. A. "Inductor design using signomial programming." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 26, no. 2 (April 10, 2007): 461–75. http://dx.doi.org/10.1108/03321640710727809.

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18

Aliferov, Alexander, Paolo Di Barba, Fabrizio Dughiero, Michele Forzan, Sergio Lupi, Maria Evelina Mognaschi, and Elisabetta Sieni. "Optimal design methods for the uniform heating of tube ends for stress relieving." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39, no. 1 (February 5, 2020): 12–20. http://dx.doi.org/10.1108/compel-05-2019-0204.

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Purpose An inductor for the uniform heating of the extremity of a ferromagnetic steel tube for stress relieving is considered. The main goal of the study is to investigate the possibility to achieve a reasonable design of the inductor when dealing with many design variables. Design/methodology/approach Genetic optimization algorithms are used for this purpose, demonstrating the applicability of these techniques to the design of induction heating inductors. Genetic algorithms provide to the designer several optimal solutions belonging to Pareto Front, and this way they allow choosing the solution that better fits the technological requirements. In any case, the designer has to adapt the chosen solution to fit in with the real possibilities in industrial application. Findings The study demonstrates that automatic optimization methods may help the designer of the induction heating system to solve complex problems with very conflicting technological requirements. Originality/value In the paper, a problem with a high number of design variables is solved. Moreover, the goals of the optimization process are strongly conflicting, and the proposed problem is a challenging one.

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19

Chen, Hao-Hui, and Yao-Wen Hsu. "Analytic Design of on-Chip Spiral Inductor with Variable Line Width." Electronics 11, no. 13 (June 28, 2022): 2029. http://dx.doi.org/10.3390/electronics11132029.

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On-chip spiral inductors with variable line width layouts are known for their high quality factor (Q-factor). In this paper, we present an analytical approach to facilitate the design of such inductors. Based on an analysis of ohmic and eddy-current losses, we first derive an analytical formula for the metal resistance calculation of a spiral inductor. By minimizing the metal resistance, a simple design equation for finding the proper line width of each coil is then presented. Several 0.18 μm CMOS spiral inductors are investigated, via electromagnetic simulations and experimental studies, to test the proposed resistance calculation, as well as the variable line width design method. It is found that the developed resistance calculation can effectively model the metal-line resistance of a spiral inductor. Moreover, the inductor with a variable line width obtained using the proposed method can significantly improve the Q-factor with little compromise to inductance, which validates the capacity of the developed variable line width design technique. Since the proposed approach can be carried out using analytical calculations, it may be a more efficient design method than those previously reported in the literature.

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20

Chun Lee, Ler, Abu Khari bin A'ain, and Albert Victor Kordesch. "Design of CMOS Tunable Image-Rejection Low-Noise Amplifier with Active Inductor." VLSI Design 2008 (February 28, 2008): 1–6. http://dx.doi.org/10.1155/2008/479173.

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A fully integrated CMOS tunable image-rejection low-noise amplifier (IRLNA) has been designed using Silterra's industry standard 0.18 μm RF CMOS process. The notch filter is designed using an active inductor. Measurement results show that the notch filter designed using active inductor contributes additional 1.19 dB to the noise figure of the low-noise amplifier (LNA). A better result is possible if the active inductor is optimized. Since active inductors require less die area, the die area occupied by the IRLNA is not significantly different from a conventional LNA, which was designed for comparison. The proposed IRLNA exhibits S21 of 11.8 dB, S11 of −17.8 dB, S22 of −10.7 dB, and input 1 dB compression point of −12 dBm at 3 GHz

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21

Fivaz, Jean, and Willem A. Cronjé. "Genetic algorithms in computer aided inductor design." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 23, no. 3 (September 23, 2004): 68–78. http://dx.doi.org/10.4102/satnt.v23i3.195.

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The goal of this investigation is to determine the advantages of using genetic algorithms in computer-aided design as applied to inductors. These advantages are exploited in design problems with a number of specifications and constraints, as encountered in power electronics during practical inductor design. The design tool should be able to select components, such as cores and wires, from databases of available components, and evaluate these choices based on the components’ characteristic data read from a database of manufacturers’ data-sheets. The proposed design must always be practically realizable, as close to the desired specifications as possible and within any specified constraints.

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22

Cale, J., S. D. Sudhoff, and R. R. Chan. "Ferrimagnetic Inductor Design Using Population-Based Design Algorithms." IEEE Transactions on Magnetics 45, no. 2 (February 2009): 726–34. http://dx.doi.org/10.1109/tmag.2008.2008436.

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23

BARTOLI, M., N. NOFERI, A. REATTI, and M. K. KAZIMIERCZUK. "MODELLING WINDING LOSSES IN HIGH-FREQUENCY POWER INDUCTORS." Journal of Circuits, Systems and Computers 05, no. 04 (December 1995): 607–26. http://dx.doi.org/10.1142/s0218126695000370.

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A high-frequency model of iron-powder-core inductors is studied. The skin and proximity effects that cause the winding parasitic resistance to increase with the operating frequency are considered. The inductor self-resonance due to the parasitic capacitances is taken into account as well. The frequency response of the inductor model is compared to that of an experimentally tested iron-powder-core inductor. Expressions giving the ac resistance as a function of the operating frequency are given. These expressions allow for an accurate prediction of the inductor power loss over a wide frequency range. The measured and calculated values of the inductor impedance magnitude and phase, the real and imaginary parts of the inductor impedance, the inductance, and the inductor quality factor are plotted versus frequency and compared. Theoretical results were in good agreement with those experimentally measured. A design procedure for solid wire winding inductors based on the results of the inductor modelling is also given in the paper.

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24

M. Maric, Andrea, Goran J. Radosavljevic, Walter Smetana, and Ljiljana D. Zivanov. "Comparison of LTCC inductors on different substrate configurations with PCB inductor." Microelectronics International 31, no. 1 (December 20, 2013): 32–41. http://dx.doi.org/10.1108/mi-04-2013-0017.

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Purpose – This paper presents performance comparison of RF inductors with the same lateral geometry applying different substrate configurations. The purpose of presented research is to demonstrate and verify some advantages of low temperature co-fired ceramic (LTCC) technology in comparison to printed circuit board (PCB) technology based on the performance analysis of presented inductors in lower RF range. Design/methodology/approach – The presented inductors are meander structures fabricated in LTCC and PCB technology, with same line width and outer dimensions. Performance analysis of all configurations is based on measurement results and numerical simulations. Advantage of LTCC technology is demonstrated by application of substrate pattering in order to maintain and/or improve expected inductor performances. Findings – As expected, obtained results for the inductor with an air-gap show increase of the quality factor over 30 percent and widening of the operating frequency range by 50 percent when compared with the same LTCC structure without a gap. But what is more important the inductor with air-gap embedded inside LTCC stack maintains efficiency when compared to PCB inductor. This fact offers possibility of integration good quality components inside LTCC stack and reduction of used chip space. Originality/value – Advantages of LTCC with respect to PCB design are demonstrated by efficiency increase of the proposed inductor configurations by means of design optimization relying on substrate pattering and incensement of the packaging density by embedding inductors. The presented findings are verified through consistency of measurement results and simulated data.

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25

Chen, Chui Xin, and Yang Hong Mao. "Design and Manufacture of Ultra-Small Chip Power Inductor." Advanced Materials Research 705 (June 2013): 359–64. http://dx.doi.org/10.4028/www.scientific.net/amr.705.359.

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Ultra-small Chip Power Inductors play an important role in the new TFT-LCD, OLED and other display equipment and other high-end electronic equipment, there are many problems in the traditional power inductors,design and manufacture the small inductor has a very important significance, from small-scale processing, positioning assembly processing, and combine surface and the point welding processing, a whole forming handle, bulk welding and bulk dispensing processing six aspects in designing and manufacturing, practice has proved that take this design, suitable for mass production, can greatly improve the productive efficiency.

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Levshin, G. E. "WAYS TO IMPROVE INDUCTION CRUCIBLE FURNARES." Izvestiya. Ferrous Metallurgy 62, no. 2 (March 30, 2019): 97–102. http://dx.doi.org/10.17073/0368-0797-2019-2-97-102.

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Analysis of the main drawbacks caused by increased walls thickness of a lined crucible, presence of tubular copper single-layer inductor cooled from inside with standard water and absence or presence of core I-shaped magnetic circuits arranged around it forming a discrete ferromagnetic screen, was made for modern induction crucible furnaces. The first drawback is that a significant part of working electromagnetic flow Fwork is not used for effective heating, since it passes along the non-conductive lining of crucible, and not along the cage. Therefore, only 38.5 – 57.0 % of the flow Fwork is effectively used. The second drawback is increased cost and complexity of manufacturing of inductor coils from a special copper tube, which vibrate at twice the frequency, creating noise and weakening design of the furnace. Such inductors are characterized by reduced electrical efficiency and increased cost of preparation and cooling of conditioned water in systems that occupy an area several times greater than the area of furnace itself. The third drawback leads to the fact that a significant part of electromagnetic scattering flow of the Fconsupt does not participate in heating of charge and melt, but heats conductive elements of furnace, including surrounding magnetic inductor. Irrational use of total flow F, created by inductor, reduces its efficiency to almost 19 – 30 %, and the power factor cosφ to 0.03 – 0.10 and increases energy consumption. To reduce or eliminate disadvantages, three ways of improving these furnaces are proposed and justified: reducing thickness of crucible wall with its simultaneous hardening by installing a cylindrical shell between the crucible and the inductor, surrounding the inductor with an annular magnetic circuit and using a single or multiwire inductor instead of a tubular one. Combination of cylindrical shell, annular magnetic circuit, as well as the upper and lower plates of the furnace frame can form an annular closed cavity to accommodate wire inductor and circulating refrigerant, cooling the inductor and the magnetic circuit. As a result of the study, new design of induction crucible furnace with wire inductor and ring-type magnetic circuit developed at AltSTU is proposed, substantiated and patented. Based on experimental determination of effectiveness of the proposed structural elements, conclusion is made about the prospects for further research.

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27

Tumma, Sunil Kumar, and Bheema Rao Nistala. "A novel hybrid series stacked differential fractal inductor for MMIC applications." Circuit World 46, no. 2 (September 26, 2019): 137–45. http://dx.doi.org/10.1108/cw-06-2019-0058.

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Purpose The purpose of this paper is to design an on-chip inductor with high inductance, high-quality factor and high self-resonance frequency for the equivalent on-chip area using fractal curves. Design/methodology/approach A novel hybrid series stacked differential fractal inductor using Hilbert and Sierpinski fractal curves is proposed with two different layers connected in series using vias. The inductor is implemented in Sonnet EM simulator using 180 nm CMOS standard process technology. Findings The proposed inductor reduces the parasitic capacitance and negative mutual inductance between the adjacent layers with significant improvement in overall inductance, quality factor and self-resonance frequency when compared with conventional series stacked fractal inductors. Research limitations/implications The fractal inductor is used to create high inductance in the single-layer process, but access to multilayers is restricted owing to unusual and expensive fabrication processes. Practical implications The proposed inductor can be used in implementation of low noise amplifier, voltage controlled oscillators and power amplifiers. Originality/value This paper introduces a combination of two fractal curves to implement a hybrid fractal inductor that enhances the performance of the inductor.

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28

Claassen, J. H. "Inductor Design for Cryogenic Power Electronics." IEEE Transactions on Appiled Superconductivity 15, no. 2 (June 2005): 2385–88. http://dx.doi.org/10.1109/tasc.2005.849678.

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29

Fivaz, Jean, and Willie A. Cronje. "Inductor design aid employing genetic algorithms." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 20, no. 1 (March 2001): 167–76. http://dx.doi.org/10.1108/03321640110359840.

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30

Hazarika, Rashmi, and Manash Pratim Sharma. "Design of a Linear LNA for 5G Applications using 45 nm Technology." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (August 10, 2021): 128–32. http://dx.doi.org/10.37394/23204.2021.20.17.

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A low noise amplifier (LNA) plays a very significant role in communication systems. Despite having a good amplification of the signal it must offer other attributes like noise figure, linearity etc for making the communication system more robust. With the advent of 5G communication, the requirement of a high BW LNA is becoming important. This paper presents the design of a LNA which have a common gate input configuration, an active inductor in place of a passive inductor, common drain amplifier at the output stage and a linearity circuit. Common gate amplifier offers a good voltage amplification while the common drain stage enhances the stability. The active inductor facilitates reduction of the die area paving the way for a cost efficient structure. This proposed design achieves a gain of 15.17dB with substantial enhancement of linearity. A good noise figure of 7dB is obtained while using 11 transistors and eliminating the need of passive inductors. The peak gain is achieved at 3.5GHz

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31

Hsu, Yuan Yong, and Chuan Wen Lai. "Design and Implementation of Single-Stage Boost Converter in Wind Power System." Advanced Materials Research 201-203 (February 2011): 2690–94. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2690.

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A new boost converter without an inductor is proposed for a small-scale wind power generator system. Experiments were carried out to compare the output powers and power conversion efficiencies for the converter without an inductor and the one with an inductor. Experimental results for the converters operated at both constant resistance mode and constant voltage mode were given. It was found that efficiencies for the converter without an inductor and for the one with an inductor are essentially the same. The cost may be reduced since the inductor is not needed in the proposed boost converter without an inductor.

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32

Marić, Andrea, Goran Radosavljević, Nelu Blaž, Walter Smetana, and Ljiljana Živanov. "Embedded Ferrite LTCC Inductors." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, CICMT (September 1, 2012): 000388–93. http://dx.doi.org/10.4071/cicmt-2012-wa48.

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This paper presents for the first time one realization of simple planar inductor realized inside the stack of ferrite LTCC (Low Temperature Co-fired Ceramic) tapes. Presented inductor is one layer square spiral fabricated in the LTCC technology. In order to point out benefits of implementation of ferrite material on inductor inductance, the same inductor geometry was fabricated between two dielectric LTCC tapes. Commercially available LTCC material (both ferrite and dielectric) were implemented for the realization of proposed inductors. Designed structures were characterized and obtained experimental results show that even implementation of a very thin layer of ferrite material around inductor lines drastically increases its inductance. For the same inductor design that occupies the same chip area the inductance enhancement over 11 times is achieved. In addition this enhancement is followed with maintenance of good performance of the inductor.

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Bazarov, Alexander A., Ashot A. Navasardyan, and Natalya V. Bondareva. "The design of the electromagnetic aluminum mold of periodic action." Vestnik of Samara State Technical University. Technical Sciences Series 29, no. 2 (August 30, 2021): 100–116. http://dx.doi.org/10.14498/tech.2021.2.7.

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This publication discusses a set of issues on computer modeling of electromagnetic and thermal processes in an induction crystallizer of an aluminum melt, in which forces are created between the melt and the inductor coil, compressing the column of liquid material and preventing direct contact of the melt with the crucible walls. In known induction systems using electromagnetic pressure on molten metal, for crystallization, the parameters of the inductor are selected so that, with sufficient force, the temperature does not rise due to internal sources of heat release with sufficient water cooling of the surface. In the proposed work, heat removal mainly occurs through contact with a water-cooled support surface. The aim of the work is to determine the process parameters at which the required electromagnetic force is formed on the melt wall, taking into account the change in the current density at the interface between the solid and liquid phases of aluminum. When determining the parameters of induction crystallizers, the temperature dependences of the thermophysical properties were used. Variants of the inductor realization are investigated, which makes it possible to cover the entire volume of the melt, inside which significant changes in the electrical conductivity of aluminum and the power of internal heat sources are observed. Obtaining a cylindrical shape of the ingot, in contrast to the known electromagnetic crystallizers, is achieved by determining the design of the inductor, which provides a decrease in the repulsive electromagnetic force acting on the side surface of the melt in height. The results of the study showed the possibility of using the crystallizer at various ratios of the height and diameter of the melt column, and the intensity of cooling. The efficiency of the process for aluminum increases with an increase in the radius of the melt column, which also leads to a decrease in shape distortion in the region of the upper end.

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Latha, R., S. Adharsh Babu, and M. Vivek Kumar. "Design and Analysis of Multi-Device Interleaved Boost Converter Driving an Induction Motor." IOP Conference Series: Earth and Environmental Science 850, no. 1 (November 1, 2021): 012036. http://dx.doi.org/10.1088/1755-1315/850/1/012036.

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Abstract Electric vehicles are the future of mobility solutions. The electric vehicles are driven by an electric motor with the help of a power electronic interface. The power electronic interface needs to be designed in an efficient way both in mechanical and electrical aspects. This paper proposes the concept of design, simulation and analysis of a 10 kW Multi-Device Interleaved DC-DC Boost Converter (MDIBC) to drive a 4 kW Induction Motor. The motor is driven from the MDIBC through an inverter with SPWM technique. The variation in DC link voltage due to motor is controlled and stabilized to give a constant DC of 400 V. MDIBC consists of semi-controlled switches topology excited by Phase Shifted PWM technique to reduce the ripple current in interleaving inductors. The dual loop control methodology using PI controller is adopted to reduce the ripple in input inductor current and DC link voltage. The open loop simulation and closed loop simulation are done in MATLAB Simulink environment. The simulation results show that the overshoots and steady state error in inductor currents and output voltage are reduced in addition with reduction in current and voltage ripples.

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Kharlov, A. V., B. M. Kovalchuk, E. V. Kumpyak, G. V. Smorudov, and N. V. Tsoy. "Physical constraints at design of a high current inductor." Laser and Particle Beams 32, no. 3 (July 21, 2014): 471–76. http://dx.doi.org/10.1017/s0263034614000408.

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AbstractHigh voltage, high current inductors are required for many high pulsed power systems, incorporating capacitor banks. Those inductors simultaneously serve both as a pulse shaping and protection element in R-L-C circuits. A 25 kV/70 kA protection inductor on inductance of 1 mH with low stray field was designed, manufactured, and tested. It was designed as a quasi-toroidal system, consisting of four coils (with 0.25 mH inductance each) evenly distributed in the perimeter of a square. The structure of coils was optimized to withstand a huge electromagnetic force produced by a 70 kA current. The 0.25 mH coil is made as multi-layer solenoid (six layers) from a copper wire (6 × 4 mm2 net cross-section) with fiberglass insulation. Layers are connected in parallel in order to decrease active resistance of the coil. This 0.25 mH coil was tested at 70 kA peak current with a pulse length of about 20 ms, which corresponds to the action integral at about 32 × 106 A2s. Maximum magnetic field inside the coil is about 12 T. A finite element analysis with the ELCUT software was used to calculate the magnetic field, temperature rise, and stresses in the protection inductor. The typical maximum stresses in our design are 100 MPa in copper coils and 140 MPa in fiberglass body tubes; these are both below the yield strength for these materials. Simulations results are compared with the experimental tests and good agreement is observed.

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Gholamian, Sholeh, and Ebrahim Abbaspour-Sani. "Design and Simulation of RF MEMS Tunable Spiral Inductor." Advanced Materials Research 403-408 (November 2011): 4148–51. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4148.

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This paper presents a tunable inductor using MEMS technology .This tunable spiral inductor is designed in order to be used in RF circuits such as : controlled oscillators with voltage (VCO) , matching networks ,amplifiers etc . The electrostatic method is employed for tuning the inductor by the movement of cantilever beam downward and changing the value of magnetic flux. Value of inductance varies fram 1.15nh to 0.561 nh .therefore ,tunablity of 66.21% was achieved .Maximum quality factor in the above inductor was achieved az 13.88 in the frequency 0f 12 GHz and the value of resonance frequency was achieved as 19.5 GHz

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Wang, Li Jie, Jian Xin Li, Lian Kui Sun, Fu Jun Zhang, and Xiu Kun Yang. "Magnetite Processing and Magnetic Field Analysis of Iron Ore Core Inductor in Iron Grade Sensor." Applied Mechanics and Materials 687-691 (November 2014): 4405–10. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.4405.

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In order to realize the online monitoring for iron grade of the magnetite during the dressing process, an iron grade fast measurement method based on electromagnetic induction is given, critical segment of the method is to make the iron grade information acquisition by adopting an iron ore core inductance sensor. Magnetic field analysis for iron ore core inductors of the sensor is explored in the paper. Taking a magnetite in certain regions of Liaoning as the test typical sample examples, physicochemical properties of its raw ore are analyzed, the iron ore samples are prepared and made, and the dressing process are completed. Ferromagnetics features of the magnetite samples above is analyzed, magnetic field distribution of the iron ore core inductor is analyzed, and analytic calculation formula of the magnetic fields is derived. Theory of solving the inductance of iron ore core inductor adopting finite element method of energy is discussed. Furthermore, total finite element design for the iron ore core inductor is made; distribution of electromagnetic field is analyzed. Influence regulations of self-inductance coefficients of the inductor are obtained, thus, the optimal combination of structural parameters of the inductor are designed. There is important practical significance to realize the iron grade testing automation for magnetite and other iron ores of the thesis research above.

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Cambero, E. V. V., C. E. Capovilla, I. R. S. Casella, R. R. Munoz, and H. X. Araujo. "A CMOS LNA Partially Degenerated Topology Proposal Using Active Inductors." Journal of Circuits, Systems and Computers 26, no. 05 (February 8, 2017): 1750078. http://dx.doi.org/10.1142/s0218126617500785.

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This paper presents the design of a CMOS low-noise amplifier (LNA) with partial inductive degeneration using active inductors in [Formula: see text]m technology. Both, the inductor of the partial degeneration and the load inductor, are actives. The inductors configurations are cascode with feedback resistance and Wu folded compact. The LNA has a gain of 13.2[Formula: see text]dB and a noise figure of 4.7[Formula: see text]dB at 1.8[Formula: see text]GHz. The layout has an active area of [Formula: see text]. The results are satisfactory, validating the compact design and demonstrating the technical feasibility of this proposed topology.

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Padavala, Akhendra Kumar, Narayana Kiran Akondi, and Bheema Rao Nistala. "High quality factor fractal inductor with complementary split-ring array inclusion." Circuit World 46, no. 3 (February 29, 2020): 215–19. http://dx.doi.org/10.1108/cw-06-2019-0052.

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Purpose This paper aims to present an efficient method to improve quality factor of printed fractal inductors based on electromagnetic band-gap (EBG) surface. Design/methodology/approach Hilbert fractal inductor is designed and simulated using high-frequency structural simulator. To improve the quality factor, an EBG surface underneath the inductor is incorporated without any degradation in inductance value. Findings The proposed inductor and Q factor are measured based on well-known three-dimensional simulator, and the results are compared experimentally. Practical implications The proposed method was able to significantly decrease the noise with increase in the speed of radio frequency and sensor-integrated circuit design. Originality/value Fractal inductor is designed and simulated with and without EBG surfaces. The measurement of printed circuit board prototypes demonstrates that the inclusion of split-ring array as EBG surface increases the quality factor by 90 per cent over standard fractal inductor of the same dimensions with a small degradation in inductance value and is capable of operating up to 2.4 GHz frequency range.

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Bouyghf, Hamid, Bachir Benhala, and Abdelhadi Raihani. "Analysis of the impact of metal thickness and geometric parameters on the quality factor-Q in integrated spiral inductors by means of artificial bee colony technique." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (August 1, 2019): 2918. http://dx.doi.org/10.11591/ijece.v9i4.pp2918-2931.

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The goal of this present paper is to design, analysis the influence of the inductor geometrical parameters and the effect of the metal thickness on the quality factor-Q in integrated square spiral inductor using an efficient application of the artificial bee colony (ABC) algorithm. The inductors were optimized at 2.4 GHz to determinate their major geometrical dimensions (sp, w, din…) and their number of turns, for uses in radio-frequency integrated circuits (RFICs). The optimization results are validated by the simulation using an electromagnetic simulator (ADS-Momentum). Using matlab software, the study on the impact of the effect of geometrical parameters and the effect of metal thickness, on the factor of quality-Q of spiral inductors, is shown. We first reported that it is possible to improve Q-factors further by increasing the metal thickness, and in the design of inductor; a compromise must be reached between the value of w, n, sp and din to achieve the desired quality factor-Q and other electrical parameters.

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Pavlushin, Aleksey V. "Optimization design and operating parameters of induction heat-ing system for hardening." Vestnik of Samara State Technical University. Technical Sciences Series 29, no. 3 (October 13, 2021): 38–51. http://dx.doi.org/10.14498/tech.2021.3.2.

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The paper deals with the problem of optimizing the design and operating parameters of an induction heating system for surface hardening of a steel stepped shaft. The problem of optimal design of an inductor is formulated based on a nonlinear two-dimensional numerical model of coupled electromagnetic and temperature fields, developed in the ANSYS Mechanical APDL software. Alternance method of parametric optimization of systems with distributed parameters is used to optimize induction hardening system. MATLAB software has been used for developing parametric optimization subroutine, which was incorporated into the numerical ANSYS model to simulate a process of induction heating. Commonly used a multi-turn solenoid-style coil fabricated from rectangular copper tubing has been used as a hardening inductor. Besides that, an application of profiled copper turns has been investigated. Optimization of induction hardening system described above allows one to substantially improve heating uniformity and enhance metallurgical characteristics of as-hardened stepped shaft. Localized temperature surplus at an upper diameter shoulder has been minimized. At the same time, sufficient austenitization in the fillet area near stepped region (diameter transition) has been obtained.

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Rai, J. N., Nikhil Gupta, and Prashant Bansal. "Design and Analysis of DC-DC Boost Converter." International Journal of Advance Research and Innovation 4, no. 3 (2016): 34–37. http://dx.doi.org/10.51976/ijari.431607.

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This paper demonstrates the design of a working prototype of 5-12V DC-DC Boost Converter. The boost converter circuit is designed using MOSFET, Resistor, Capacitor, Inductor and Diode. The key principle that drives the boost converter is the tendency of an inductor to resist changes in current. Inductor is designed using ferrite pot core and windings. This paper briefly reviews the technology used in switched mode power supplies for DC to DC conversion for transferring energy from input to output. Simulation studies are performed using MATLAB tool to validate the proposed scheme as well as hardware practical results.

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Uddin, Md Jamil, Hadaate Ullah, and Mohammad Arif Sobhan Bhuiyan. "Fully Integrated K-Band Active Bandpass Filter In GPDK 90nm CMOS Technology." Carpathian Journal of Electronic and Computer Engineering 11, no. 1 (September 1, 2018): 3–6. http://dx.doi.org/10.2478/cjece-2018-0001.

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Abstract The bandpass filter is one of the essential blocks of every modern RF transceiver. Performance of the transceiver greatly depends on the performance of the bandpass filter. A bandpass filter designed with passive inductors suffers from some drawbacks like large chip size, low-quality factor, less tenability etc. To prevail over these constraints, an active inductor-based bandpass filter circuit has been designed in GPDK-90nm CMOS technology utilizing cadence virtuoso environment. The simulation result shows that the active inductor-based bandpass filter circuit design achieves a gain of 6.79dB, a bandwidth of 5.05 GHz and a noise figure of 3.10dB. The circuit dissipates only 3.55mW power for its operation from a single 1.5V DC supply. By avoiding bulky inductor in the design helped to attain a very small chip area of 127.704μm2.

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Zhang, Li, Aslihan Kartci, Ahmed Elwakil, Hakan Bagci, and Khaled N. Salama. "Fractional-Order Inductor: Design, Simulation, and Implementation." IEEE Access 9 (2021): 73695–702. http://dx.doi.org/10.1109/access.2021.3077561.

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Eroglu, Abdullah. "PLANAR INDUCTOR DESIGN FOR HIGH POWER APPLICATIONS." Progress In Electromagnetics Research B 35 (2011): 53–67. http://dx.doi.org/10.2528/pierb11081601.

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Gaiewski, W. R., L. P. Dunleavy, and L. A. Geis. "Hybrid inductor modeling for successful filter design." IEEE Transactions on Microwave Theory and Techniques 42, no. 7 (July 1994): 1426–29. http://dx.doi.org/10.1109/22.299741.

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Collins, C., and M. Duffy. "Distributed (parallel) inductor design for VRM applications." IEEE Transactions on Magnetics 41, no. 10 (October 2005): 4000–4002. http://dx.doi.org/10.1109/tmag.2005.855163.

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Deng, Joseph Der-Son, Chih-Yuan Lee, Chin-Hsing Kao, and Tung-Sheng Chen. "High-QSpiral Inductor Design on Silicon Substrate." Japanese Journal of Applied Physics 43, no. 12 (December 9, 2004): 7921–25. http://dx.doi.org/10.1143/jjap.43.7921.

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Cui, Han, and Khai D. T. Ngo. "Synthesis and Design of a Distributed Inductor." IEEE Transactions on Industrial Electronics 64, no. 7 (July 2017): 5351–59. http://dx.doi.org/10.1109/tie.2017.2674582.

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Biondi, T., A. Scuderi, E. Ragonese, and G. Palmisano. "Sub-nH inductor modeling for RFIC design." IEEE Microwave and Wireless Components Letters 15, no. 12 (December 2005): 922–24. http://dx.doi.org/10.1109/lmwc.2005.859941.

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