Conventional metamaterials for controlling the reflection path of electromagnetic waves have limitations, such as inevitability of thickness variation according to the frequency of the incident wave, electrical instability, and dependence on the designer. In this study, we propose a dielectric structure to control the reflection path of microwaves while overcoming those limitations. The proposed structure prevents reflected waves from returning to the wave source by scattering the incident waves. It is effective in broadband frequency without changing thickness, and electrically stable because it is composed of a dielectric material. A systematic approach called the phase field design method was employed as a design methodology to reduce the dependence on the designer. A three-dimensional (3-D) shaped prototype was fabricated using a 3-D printer, and numerical results were verified through experiments.
Bibliographical noteFunding Information:
Manuscript received January 18, 2019; revised February 23, 2019 and March 5, 2019; accepted March 5, 2019. Date of publication March 8, 2019; date of current version April 5, 2019. This work was supported in part by the National Research Foundation of Korea (NRF) funded by the Korea Government (MEST) under Grant NRF-2016R1A2B4008501 and in part by the Agency for Defense Development of Korea under Grant UD160026GD. (Corresponding author: Jeonghoon Yoo.) M. Jung, H. Shin, and J. Yoo are with the Department of Mechanical Engineering, Yonsei University, Seoul 03722, South Korea (e-mail:, seevin1145@ naver.com; shinhd83@ nate.com; email@example.com).
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering