The Journal of Korea Institute of Information, Electronics, and Communication Technology (한국정보전자통신기술학회논문지)

Korea Information Electronic Communication Technology (한국정보전자통신기술학회)
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Study on Frequency Characteristics for Single-Layer Symmetric Spiral Inductor

단층 나선형 인덕터에 대한 주파수 특성 연구

  • Kim, Jae-Wook (Department of Electronics Engineering, Namseoul University)
  • Received : 2020.09.24
  • Accepted : 2020.10.05
  • Published : 2020.10.30
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Abstract

In the case of a general spiral inductor, the orientation of the port is affected as it has an asymmetric structure. In this paper, a single-layered spiral inductor that can have a symmetrical structure is proposed, and the simulation and frequency characteristics are analyzed. The general spiral inductor shows a large difference in frequency-inductance characteristics, frequency-quality factor characteristics, and self-resonant frequency according to the standard of the port, while the proposed symmetric spiral inductor has an inductance of 2.7nH, a quality factor of about 7.86, and a self-resonant frequency of about 14.1GHz without changing the port. Compared to the general spiral inductor having a large difference depending on the port, it was confirmed that the influence on the port direction was small. However, it was confirmed that the mutual inductance decreased compared to the occupied area of the coil, resulting in a low inductance, and the resistance of the coil increased more than the increase in the inductance, and the quality factor was also lowered. In the future, it is expected that inductance and quality factor can be improved through a 2-layer symmetrical spiral structure.

일반적인 나선형 인덕터의 경우에 비대칭 구조를 가짐에 따라 포트의 방향에 영향을 받게 된다. 본 논문에서는 단층이면서 대칭 구조를 가질 수 있는 나선형 인덕터를 제안하고 시뮬레이션 및 주파수 특성을 분석하였다. 일반적인 나선형 인덕터는 포트의 기준에 따라 주파수-인덕턴스 특성, 주파수-품질계수 특성, 자기공진주파수가 큰 차이를 보이는 반면에, 제안된 대칭 나선형 인덕터는 포트에 변함없이 2.7nH의 인덕턴스, 약 7.86의 품질계수, 약 14.1GHz의 자기공진주파수를 가진다. 이는 기존 일반적인 나선형 인덕터가 포트에 따라 큰 차이를 갖는 것과 비교하여 포트의 방향에 대한 영향이 적은 것을 확인할 수 있었다. 다만, 코일의 점유 면적에 비하여 상호 인덕턴스가 줄어들어 낮은 인덕턴스를 가지며, 인덕턴스 증가보다 코일의 저항이 더 증가하여 품질계수 또한 낮아짐을 확인할 수 있었다. 향후에는 2층 대칭 나선형 구조를 통하여 인덕턴스와 품질계수를 향상시킬 수 있을 것으로 기대된다.

Keywords

References

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