Design of Multilayer Spiral Coils with Different Geometries to Determine the Inductance

Andreica, Sergiu; Munteanu, Călin; Gliga, Marian; Pacurar, Claudia; Giurgiuman, Adina; Constantinescu, Claudia

doi:10.1109/epe50722.2020.9305615

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Due to the previously calculated trace parameters and the dimensions of 55 mm × 55 mm, a maximum of 7 turns are possible for a Square PCB coil on one layer. There are various approaches for calculating the inductance of different coil geometries; for example, simple analytical methods as proposed by Mohan et al [35] or more advanced numerical methods as published by Constantinescu et al [36]. Since the investigated inductances should have similar inductivities, here, the simple analytical methods of Mohan et al [35] seem more appropriate for estimating the inductivities of the different coil geometries.…”

Section: Methodsmentioning

confidence: 99%

Wireless Low-Power Transfer for Galvanically Isolated High-Voltage Applications

et al. 2022

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For various applications, such as gate drivers for transistors, wireless chargers for mobile devices and cars, and isolated measurement equipment, an isolated DC power supply for electronic components is required. In this work, a new concept for an isolated power supply with insulation strength of 50 kV and power transmission of up to 60 W to supply measurement equipment with 12 or 24 V is presented. Furthermore, high overall efficiency of 82.5% at 55 W is achieved. Feasibility is demonstrated in a real application powering data acquisition electronics at high reference potential. Our new concept uses a coreless printed circuit board (PCB) transformer (15 cm × 10 cm × 4 cm and a weight of 480 g) designed for maximum efficiency via a coil layout and close proximity of adjacent coils on one PCB while reaching high isolation strength via the PCB material and potted coils. To increase efficiency, we investigated different coil geometries at different frequencies. A low-cost design consisting of two Qi charging coils mounted on one PCB is compared with our integrated PCB transformers manufactured from a four-layer PCB with ferrites applied on the outside. With this new design, high isolation voltages are possible while reaching high transformer efficiency of up to 90%.

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Section: Methodsmentioning

confidence: 99%

Wireless Low-Power Transfer for Galvanically Isolated High-Voltage Applications

et al. 2022

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“…The single-layer planar coil has no magnetic core-binding circuit, and the magnetic leakage is significant. Then, the single-layer thin film magnetic core or the two-layer thin film structure and sandwich structure are introduced to remarkably improve the inductance and quality factor of the planar spiral inductor [2][3][4][5][43][44][45][46]. The solenoid based on the MEMS process has good integration performance on standard silicon substrate, and the hollow solenoid coil can reduce the influence of substrate [47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Preparation Technologies for Micro Metal Coils

et al. 2022

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The recent development of micro-fabrication technologies has provided new methods for researchers to design and fabricate micro metal coils, which will allow the coils to be smaller, lighter, and have higher performance than traditional coils. As functional components of electromagnetic equipment, micro metal coils are widely used in micro-transformers, solenoid valves, relays, electromagnetic energy collection systems, and flexible wearable devices. Due to the high integration of components and the requirements of miniaturization, the preparation of micro metal coils has received increasing levels of attention. This paper discusses the typical structural types of micro metal coils, which are mainly divided into planar coils and three-dimensional coils, and the characteristics of the different structures of coils. The specific preparation materials are also summarized, which provides a reference for the preparation process of micro metal coils, including the macro-fabrication method, MEMS (Micro-Electro-Mechanical System) processing technology, the printing process, and other manufacturing technologies. Finally, perspectives on the remaining challenges and open opportunities are provided to help with future research, the development of the Internet of Things (IoTs), and engineering applications.

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“…The accurate calculation and extraction of spiral inductor electronic and electrical parameters, using adequate methods that do not require long computation time, excessive computational resources, or high effort, are necessary. The integrated circuits must be modelled and simulated to understand, study, and analyse their behaviour as well as highlight the phenomena and effects that occur at high frequency at micrometric geometries [14][15][16][17][18]. To achieve these, the following specific research objectives were met in this article: the extraction of inductance, quality specific research objectives were met in this article: the extraction of inductance, qualit factor, and electrical parameters for square, hexagonal, octagonal, and circular spiral in ductors; the analysis of frequency and geometrical parameters influences on inductanc and quality factor; planar spiral inductors configuration's optimization for energy eff ciency.…”

Section: Introductionmentioning

confidence: 99%

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

et al. 2021

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This paper deals with high frequency analysis of spiral inductors, used in microelectronics circuits, to optimize their configuration. Software developed, designed, and implemented by the authors for nano and micrometre spiral inductor high frequency analysis, named ABSIF, is presented in this paper. ABSIF determines the inductance, quality factor, and electrical parameters for square, hexagonal, octagonal, and circular spiral inductors and their configuration optimization for energy efficiency. ABSIF is a good tool for spiral inductor design optimization in high frequency applications and takes into account the imposed technological limits and/or the designers’ constraints. A set of spiral inductors are considered and analysed for high frequency values using ABSIF, and the results are presented in the paper. The validation of ABSIF was completed by comparing the results with those obtained using a similar commercial software, Sonnet LiteTM, which is dedicated to high frequency electromagnetic analysis.

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Design of Multilayer Spiral Coils with Different Geometries to Determine the Inductance

Cited by 3 publications

References 6 publications

Wireless Low-Power Transfer for Galvanically Isolated High-Voltage Applications

Wireless Low-Power Transfer for Galvanically Isolated High-Voltage Applications

Recent Progress in the Preparation Technologies for Micro Metal Coils

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

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