Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Structural Design based on the Phase Field Design Method to Enhance the Patch Antenna Performance

패치안테나 성능 향상을 위한 페이즈필드 설계법 기반의 형상 설계

  • Lee, Sangyeub (Graduate school of Mechanical Engineering, Yonsei Univ.) ;
  • Shin, Hyundo (Graduate school of Mechanical Engineering, Yonsei Univ.) ;
  • Yoo, Jeonghoon (Department of Mechanical Engineering, Yonsei Univ.)
  • 이상엽 (연세대학교 대학원 기계공학과) ;
  • 신현도 (연세대학교 대학원 기계공학과) ;
  • 유정훈 (연세대학교 기계공학과)
  • Received : 2016.10.17
  • Accepted : 2017.01.02
  • Published : 2017.02.28
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Abstract

In this study, we designed the metallic reception part of a patch antenna using the phase field design method. The design object function is formulated with the S-parameter value which represent the return loss so that it is targeted to maximize radiation efficiency at a target frequency. The initial model of a patch antenna was designed via the ordinary theory based approach and its performance was enhanced by changing the structural configuration of the metallic part using the phase field design method combined with the double well potential functions. The final shape was proposed by removing the gray scale area along the structural boundary by employing a cut-off method. The proposed shape shows that the radiation efficiency at target frequency is significantly improved compared with the initial patch shape. The finite element analysis and optimization precess was performed using the commercial package COMSOL and Matlab programming.

본 연구에서는 페이즈필드 설계법에 기반한 형상최적설계를 통해 개선된 패치안테나 금속 패치 부분의 형상 설계를 진행하였다. 설계 목적은 패치 안테나의 목적 주파수에서의 방사 효율을 최대화 하는 것으로 설정하였고, 이에 따라 목적 함수는 반사손실을 나타내는 S-파라미터 값의 최소화로 정의하였다. 패치형상의 최적화 결과는 페이즈필드 설계법을 이용하여 도출하였고, 최적화 결과의 회색영역을 제거하기 위해서 컷오프 방법을 적용하였다. 더불어 쿼터 정합기의 길이 변화를 통해 성능 개선 과정을 진행하였다. 이를 통해 도출해낸 최종 형상에 대한 해석 결과, 목표 주파수에서의 S-파라미터 값이 -1.14dB에서 -12.73dB로 개선됨을 확인하였다.

Keywords

References

  1. Aage, N., Mortensen, N.A., Sigmund, O. (2010) Topology Optimization of Metallic Devices for Microwave Applications, Int. J. Numer. Meth. Eng., 83(2), pp.228-248. https://doi.org/10.1002/nme.2837
  2. Byun, S,. Lee, H.Y., Yoo, J. (2014) Systematic Approach of Nanoparticle Design to Enhance the Broadband Plasmonic Scattering Effect, J. Appl. Phys., 115, pp.184302-1-184302-6. https://doi.org/10.1063/1.4875660
  3. Chelouah, R., Siarry, P. (2000) A Continuous Genetic Algorithm Designed for the Global Optimization of Multimodal Functions, J. Heuristics, 6(2), pp.191-213. https://doi.org/10.1023/A:1009626110229
  4. Choi, J.S., Yamada, T., Izui, K., Nishiwaki, S., Yoo, J. (2011) Topology Optimization using a Reaction-diffusion Equation, Comput. Methods Appl. Mech. & Eng., 200(29), pp.2407-2420. https://doi.org/10.1016/j.cma.2011.04.013
  5. Lim, H., Yoo, J., Choi, J.S. (2014) Topological Nano-aperture Configuration by Structural Optimization based on the Phase Field Method, Struct. Multi. Optim., 49, pp.209-224. https://doi.org/10.1007/s00158-013-0970-1
  6. Matin, M.A., Sayeed, A.I. (2010) A Design Rule for Inset-fed Rectangular Microstrip Patch Antenna, WSEAS Transactions on Communications, 9(1), pp.63-72.
  7. Song, S.M., Kim, C., Lee, H., Yoo, J. (2014) Patch Antenna Shape Design Using the Genetic Algorithm, Trans. Soc. Inform. Stor. Sys., 10(2), pp.45-49. https://doi.org/10.9797/TSISS.2014.10.2.045
  8. Stutzman, W.L., Thiele, G.A. (2012) Antenna Theory and Design Wiley, John Wiley & Sons, New York.
  9. Takezawa, A., Nishiwaki, S., Kitamura, M. (2010) Shape and Topology Optimization based on the Phase Field Method and Sensitivity Analysis, J. Comput. Phys., 229, pp.2697-2718. https://doi.org/10.1016/j.jcp.2009.12.017
  10. Uchida, N., Nishiwaki, S., Izui, K., Yoshimura, M., Nomura, T., Sato, K. (2009) Simultaneous Shape and Topology Optimization for the Design of Patch Antennas, Proc. 3rd European Conf. Antennas Propag., pp.103-107.
  11. Yamada, T., Izui, K., Nishiwaki, S., Takezawa, A. (2010) A Topology Optimization Method based on the Level Set Method Incorporating a Fictitious Interface Energy, Comput. Methods Appl. Mech. & Eng., 199, pp.2876-2891. https://doi.org/10.1016/j.cma.2010.05.013