volume | PIER Journals

Abstract

More accurate hybrid PO-MOM process combining physical optics (PO) with method of moment (MOM) is employed to analyze an electrically large antenna-radome structure. The mutual interactions among the antenna, the inner and outer surfaces of the radome are considered through a group of associated integral equations. In the analysis, the antenna surface and the sharp tip part on the radome surface are modeled accurately by using MOM while the rest smooth parts on the radome surfaces are approximated by using PO. Numerical results indicate that the hybrid process presented in this paper is much more accurate than the conventional PO-MOM ones.

1. Oguzer, T. and A. Altintas, "Analysis of the nonconcentric reflector antenna-in-radome system by the iterative reflector antenna and radome interaction," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 1, 57-70, 2007.
doi:10.1163/156939307779391696

2. Sukharevsky, O. I. and V. A. Vasilets, "Scattering of reflector antenna with conic dielectric radome," Progress In Electromagnetics Research B, Vol. 4, 159-169, 2008.
doi:10.2528/PIERB08011404

3. Arvas, E., A. Rahhalarabi, U. Pekel, and E. Gundogan, "Electromagnetic transmission through a small radome of arbitrary shape," IEE Proceedings H, Vol. 137, 401-405, 1990.

4. Zou, Y. L., J. Y. Li, and Q. Z. Liu, "Modifiedmode decomposition for analyzing antennas with body of revolution radome," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 10, 1403-1410, 2007.
doi:10.1163/156939307783239519

5. Zou, Y., Q. Liu, and J. Guo, "Fast analysis of body-of-revolution radomes with method of moments," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 13, 1803-1817, 2007.

6. Nie, X. C., N. Yuan, L. W. Li, T. S. Yeo, and Y. B. Gan, "Fast analysis of electromagnetic transmission through arbitrarily shaped airborne radomes using precorrected-FFT method," Progress In Electromagnetics Research, PIER 54, 37-59, 2005.

7. Yuan, N., X. C. Nie, Y. B. Gan, T. S. Yeo, and L. W. Li, "Accurate analysis of conformal antenna arrays with finite and curved frequency selective surfaces," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 13, 1745-1760, 2007.

8. Lu, C.-C., "A fast algorithm based on volume integral equation for analysis of arbitrarily shaped dielectric radomes," IEEE Transaction on Antennas and Propagation, Vol. 51, 606-612, Mar. 2003.

9. Shifflett, J. A., "CADDRAD: A physical optics radar/radome analysis code for arbitrary 3D geometries," IEEE Antennas Propagation Magazine, Vol. 39, 73-79, Dec. 1997.
doi:10.1109/74.646806

10. Hemon, R., P. Pouliguen, H. He, J. Saillard, and J. F. Damiens, "Computation of EM field scattered by an open-ended cavity and by a cavity under radome using the iterative physical optics," Progress In Electromagnetics Research, PIER 80, 77-105, 2008.

11. Abdel Moneum, M. A., Z. Shen, J. L. Volakis, and O. Graham, "Hybrid PO-MOM analysis of large axi-symmetric radomes," IEEE Transaction on Antennas and Propagation, Vol. 49, 1657-1666, 2001.
doi:10.1109/8.982444

12. Zhao, W. J., Y. B. Gan, L. W. Li, and C. F. Wang, "Effects of an electrically large airborne radome on radiation patterns and input impedance of a dipole array," IEEE Transaction on Antennas and Propagation, Vol. 55, 2309-2402, Aug. 2007.

13. Umashankar, K., A. Taflove, and S. M. Rao, "Electromagnetic scattering by arbitrary shaped three-dimensional homogeneous lossy dielectric objects," IEEE Transaction on Antennas and Propagation, Vol. 34, 758-766, 1986.
doi:10.1109/TAP.1986.1143894

14. Rao, S. M., D. R. Wilton, and A. W. Glison, "Electromagnetic scattering by surfaces of arbitrary sharp," IEEE Transaction on Antennas and Propagation, Vol. 30, 409-418, 1982.
doi:10.1109/TAP.1982.1142818

15. Makarov, S. N., Antenna and EM Modeling with MATLAB, 4-10, Wiley, New York, 2002.

Dr. Bing Hu

Dr. Xiao-Wen Xu

Prof. Mang He

Dr. Ying Zheng