Academic Journal of Computing & Information Science, 2021, 4(7); doi: 10.25236/AJCIS.2021.040713.
Haoran Wang1, Tao Zhang1, Chongmei Peng1,2, Zhaohui Chen3
1Institute of Microelectronics, Chinese Academy of Sciences University of Chinese, Academy of Sciences Beijing, China
2High-Frequency High-Voltage Device and Integrated Circuits Center Institute of Microelectronics, Chinese Academy of Sciences Beijing, China
3Shanghai Integrated Circuit Materials Research Institute Co., Ltd Shanghai, China
In this paper, three inductor structures with different magnetic cores are established to explore the influence of magnetic core shape on inductor performance, based on the three-dimensional vertical spiral inductor. Through three-dimensional electromagnetic simulation, it is found that the introduction of the central magnetic column and the up and low magnetic leakage prevention plates greatly increases the inductance L and the quality factor Q of three-dimensional vertical spiral inductor by increasing the permeability of magnetic core and reducing the leakage loss. Based on this conclusion, a dumbbell-shaped magnetic core structure with the characteristics of central magnetic column and up and low magnetic leakage prevention plates is proposed. The three-dimensional electromagnetic simulation results verifies the excellent performance of inductor with dumbbell-shaped magnetic core which maximum quality factor is increased from 34 to 76, and the inductance value at the corresponding frequency is increased from 6nH to 64nH. It can be found that adding special magnetic cores is an effective way to improve the performance of three-dimensional integrated inductors, which provides a direction for the research on improvement of three-dimensional integrated inductor performance.
MEMS, inductor, three-dimensional vertical spiral, dumbbell-shaped core, quality factor, magnetic core
Haoran Wang, Tao Zhang, Chongmei Peng, Zhaohui Chen. Simulation and Optimization of High Performance 3D Vertical Spiral Inductor. Academic Journal of Computing & Information Science (2021), Vol. 4, Issue 7: 88-95. https://doi.org/10.25236/AJCIS.2021.040713.
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