Abstract #3322

Design of Self-decoupled Dipole Antenna for Ultra-high Field Magnetic Resonance Imaging

Taewoo Nam¹, Eunwoo Lee¹, Daniel Hernandez², Hanna Kim², Changheun Oh³, Young Seung Jo⁴, Yeunchul Ryu⁵, Yeji Han⁶, Jun-Young Chung⁷, and Kyoung-Nam Kim^1,6

¹Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, Korea, Republic of, ²Neuroscience Research Institute, Gachon University, Incheon, Korea, Republic of, ³Neuroscience Research Institute, Gachon University Gil Medical Center, Incheon, Korea, Republic of, ⁴Gachon Biomedical Convergence Institute, Gachon University Gil Medical Center, Incheon, Korea, Republic of, ⁵Department of Radiological Science, Gachon University, Incheon, Korea, Republic of, ⁶Department of Biomedical Engineering, Gachon University, Seongnam, Korea, Republic of, ⁷Department of Neuroscience, College of Medicine, Gachon University, Incheon, Korea, Republic of

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & Systems, Dipole antenna, Self-decoupling, Ultra-high field

Motivation: The dipole antenna has relatively long length in the z-axis direction, making it difficult to arrange multi-channels in the z-axis direction. Furthermore, decoupling methods must be considered to arrange multiple channels.

Goal(s): Our goal is to derive the structure of a shortened and self-decoupled dipole antenna.

Approach: Based on electromagnetic simulation, we designed the self-decoupled dipole(SDD) antenna consisting of dipole antenna, FR-4 and additional conductor line.

Results: The SDD has a length of 100mm in the z-axis direction. Additionally, the 2-channel SDD arrays showed -40dB and -30dB of transmission coefficient in EM simulation and bench measurements without decoupling method.

Impact: Our proposed dipole antenna can be reduced the length in the z-axis direction and can be decoupled without decoupling circuitries. The proposed design can effectively be used in multi-channel array for brain or body application in ultra-high field MRI.

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