A New Wiregrid Modeling Scheme for a Curvature Varying Surface

곡률을 갖는 산란체의 새로운 선조합 모델링 기법

  • 심재륜 (부산외국어대학교 컴퓨터전자공학부)
  • Published : 2002.04.01

Abstract

A new wiregrid modeling scheme is proposed for a curvature varying scatterer A 2-dimensional conducting elliptic cylinder is modelled by wires with the different size of radius considering the radius of curvature on the surface. The magnitude of the internal field in the conducting elliptic cylinder is used as an indicator to check the accuracy of solutions between two methods. Numerical results show that this new wiregrid model scheme can be reduced the number of wires and applied to enhance the accuracy of solutions for a curvature varying scatterer.

곡률을 .가진 산란체의 전자파 해석에 유용한 선조합 모델링 기법을 제안한다. 곡률을 가진 2차원 타원형 실린더를 기준으로 곡률 정보가 포함된 선전류에 의해 선조합 모델링한다. 본 논문에서 제안한 선조합 모델링 기법의 우수성은 도체 내부 전계의 크기로 확인하였고, 수치 해석 곁과 기존의 동일 반지름에 의한 방법보다 본 방법은 선전류의 개수를 줄일 수 있을 뿐만 아니라 모멘트법 해의 정확성을 높일 수 있다.

Keywords

References

  1. K. S. H. Lee, L. Marin, and J. P. Castillo, 'Limitations of Wire-Grid Modeling of a Closed Surface,' IEEE Trans. on EMC, vol. 18, no. 3, pp. 123-129, August 1976
  2. E. H. Newman and D. M. Pozar, 'Electromagnetic Modeling of Composite Wire and Surface Geometries,' IEEE Trans. on Antennas and Propagation, vol. 26, no. 6, pp. 784-789, Nov. 1978 https://doi.org/10.1109/TAP.1978.1141937
  3. J. T. Mayhan, 'Characteristics Modes and Wire Grid Modeling,' IEEE Trans. on Antennas and Propagation, vol. 38, no. 4, pp. 457-469, April 1990 https://doi.org/10.1109/8.52263
  4. A. C. Ludwig, 'Wire Grid Modeling of Surfaces,' IEEE Trans. on Antennas and Propagation, vol. 35, no. 9, pp. 1045-1048, Sept. 1987 https://doi.org/10.1109/TAP.1987.1144220
  5. R. J. Paknys, 'The Near Field of a Wire Grid Model,' IEEE Trans. on Antennas and Propagation, vol. 39, no. 7, pp. 994-999, July 1991 https://doi.org/10.1109/8.86920
  6. P. L. E. Uslenghi and N. R. Zitran, 'The Elliptic Cylinder,' in Electromagnetic and Acoustic Scattering by Simple Shapes, J. J. Bowman, T. B. A. Senior, and P. L. E. Uslenghi, Eds. Amsterdam, North Holland, The Netherlands, 1969, pp. 416-471
  7. R. Holland and V. P. Cable, 'Mathieu Functions and Their Applications to Scattering by a Coated Strip,' IEEE Trans. on EMC, vol. 34, no. 1, pp. 9-16, Feb. 1992
  8. D. B. Hodge, 'The Calculation of the Eigenvalues and Eigenfunctions of Mathieu's Equation,' Ohio State University, ElectroScience Lab., Rep. 2902-4, June 1971
  9. J. A. Stratton, Electromagnetic Theory, McGraw-Hill, New York, 1941
  10. P. M. Morse and H. Feshbach, Methods of Theoretical Physics, Vols. I and II, McGraw-Hill, New York, 1953