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논문 기본 정보

자료유형
학술저널
저자정보
Seonho Lim (Yonsei University) Woo Cheol Choi (Yonsei University) Young Joong Yoon (Yonsei University)
저널정보
한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.15 No.4
발행연도
2015.10
수록면
219 - 223 (5page)

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초록· 키워드

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In this paper, a miniaturized radio frequency choke (RFC) using modified stubs is proposed to improve isolation characteristics in a multiple-input-multiple-output (MIMO) antenna system. The proposed RFC, based on the LC resonance, is designed to suppress the leakage current that leads to the degradation of antenna diversity performances in the MIMO antenna configuration. The proposed RFC is composed of two open stubs that are implemented on the top of the ground plane and miniaturized by adding a slit structure on the ground plane. The MIMO antennas are also designed to verify isolation performance in the LTE 2300 band (2,300?2,400 MHz). The MIMO antennas perform well with low reflection coefficient characteristics and high isolation characteristics in the whole LTE 2300 band. To evaluate the isolation in the MIMO system, the envelope correlation coefficient (ECC) is calculated, and the value is less than 0.08. The achieved ECC is regarded as a reasonable result for improving isolation performance in the frequency range of 2,300?2,400 MHz; also, radiation patterns of antenna elements are maintained regardless of the presence of RFC.

목차

Abstract
I. INTRODUCTION
II. DESIGN OF THE PROPOSED RFC
III. MEASUREMENT RESULT
IV. CONCLUSION
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