PIER
 
Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 34 > pp. 253-270

ANALYSIS OF RADIATION CHARACTERISTICS OF AN OPEN CIRCULAR WAVEGUIDE ASYMMETRICALLY COVERED BY A DIELECTRIC LAYERED HEMI-SPHERICAL RADOME

By M. S. Leong, L. W. Li, X. Ma, P. S. Kooi, and T. S. Yeo

Full Article PDF (823 KB)

Abstract:
In this paper, the radiation characteristics of an open circular waveguide asymmetrically covered by a layered dielectric hemi-spherical radome are analyzed. On the waveguide opening, the dominant TE11 wave of the circular waveguide is assumed. The technique of dyadic Green's function is applied to obtain the radiated electromagnetic fields due the circular aperture. Huygens' equivalence principle and the image theory are utilized to simplify the problem. The translational addition theorems of spherical vector wave functions are also employed to make the mathematical representation of the radiated fields compact. Both the exact formulation in the near (radiating-field) zone and the approximate expressions in the far (Fraunhofer) zone of the radiated fields are obtained. Numerical computations are implemented to show the effects of the off-centered source feed asymmetrically covered by the hemi-spherical dielectric radome.

Citation: (See works that cites this article)
M. S. Leong, L. W. Li, X. Ma, P. S. Kooi, and T. S. Yeo, "Analysis of Radiation Characteristics of an Open Circular Waveguide Asymmetrically Covered by a Dielectric Layered Hemi-Spherical Radome," Progress In Electromagnetics Research, Vol. 34, 253-270, 2001.
doi:10.2528/PIER01062202
http://www.jpier.org/PIER/pier.php?paper=0106222

References:
1. Walton Jr., J. D. (Ed.), Radome Engineering Handbook: Design and Principles, Marcel Dekker, Inc., New York, 1970.

2. Crone, G. A. E., A. W. Rudge, and G. N. Taylor, "Design and performance of airborne radomes: A review," IEE Proc. Part F, Vol. 128, 451-463, December 1981.

3. Chu, R.-S., "Analysis of an infinite phased array of dipole elements with RAM coating on ground plane and covered with dielectric radome," IEEE Trans. Antennas Propagat., Vol. 39, No. 2, 164-176, 1991.
doi:10.1109/8.68178

4. Shavit, R., A. P. Smolski, E. Michielssen, and R. Mittra, "Scattering analysis of high performance large sandwich radomes," IEEE Trans. Antennas Propagat., Vol. 40, No. 2, 126-133, 1992.
doi:10.1109/8.127395

5. Shavit, R., "Dielectric cover effect on rectangular microstrip antenna array," IEEE Trans. Antennas Propagat., Vol. 42, No. 8, 1180-1184, 1994.
doi:10.1109/8.310012

6. Bayard, J. P. R., "Analysis of infinite arrays of microstrip-fed dipoles printed on protruding dielectric substrates and covered with a dielectric radome," IEEE Trans. Antennas Propagat., Vol. 42, No. 1, 82-89, 1994.
doi:10.1109/8.272305

7. Vergnolle, C., T. Lemoine, and B. Dumont, "Material requirements for microwave antenna into aircraft skins," Proceedings of Smart Structures and Materials 1993: Smart Materials, 197-202, Albuquerque, NM, USA, February, 1993, Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, USA.

8. Li, L.-W., P.-S. Kooi, M.-S. Leong, T.-S. Yeo, and X. Ma, "An analysis of a circular aperture antenna covered with a dielectric hemi-spherical shell radome over ground plane," Digest of 1995 IEEE AP-S International Symposium and USNC/URSI Radio Science Meeting, Vol. 3rd of 4, 1442-1445, Newport Beach, California, USA, June 18–23, 1995.

9. Overfelt, P. L., "Superspheroids: A new family of radome shapes," IEEE Trans. Antennas Propagat., Vol. 43, No. 2, 215-220, 1995.
doi:10.1109/8.366386

10. Deschamps, G. A., "Ray techniques in electromagnetics," Proc. IEEE, Vol. 60, No. 9, Sept. 1972.
doi:10.1109/PROC.1972.8850

11. Wu, D. C. F. and R. C. Rudduck, "Plane wave spectrumsurface integration technique for radome analysis," IEEE Trans. Antennas Propagat., Vol. 22, 497-500, May 1974.
doi:10.1109/TAP.1974.1140802

12. Paris, D. T., "Computer aided radome analysis," IEEE Trans. Antennas Propagat., Vol. 18, 7-15, January 1970.
doi:10.1109/TAP.1970.1139614

13. Hodges, R. E. and Y. Rahmat-Samii, "Evaluation of dielectric physical optics in electromagnetic scattering," AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society), Vol. 3 (of 3), 1742-1745, Ann Arbor, MI, USA, June, 1993, IEEE Service Center, Piscataway, NJ, USA.

14. Gordon, R. K. and R. Mittra, "Finite element analysis of axisymmetric radomes," IEEE Trans. Antennas Propagat., Vol. 41, No. 7, 975-981, 1993.
doi:10.1109/8.237631

15. Ingalls, R. P., et al., "Upgrading the haystack radio telescope for operation at 115 Ghz," Proc. IEEE, Vol. 82, No. 5, 742-755, May 1994.
doi:10.1109/5.284741

16. Svezhentsev, A. Y., A. I. Nosich, A. Altintas, and T. Oguzer, "Simulation of reflector antenna covered by a circular radome," Proceedings of the 9th International Conference on Antennas and Propagation, IEE, Stevenage, Engl., Part 1 (of 2), 532–535, Eindhoven, Neth, April, 1995.

17. Stein, S., "Addition theorems for spherical wave functions," Quart. Appl. Math., Vol. 19, 15-24, 1961.
doi:10.1090/qam/120407

18. Cruzan, O. R., "Translational addition theorems for spherical vector wave functions," Quart. Appl. Math., Vol. 20, 33-40, 1962.
doi:10.1090/qam/132851

19. Chew, W. C. and Y.-M. Wang, "Efficient ways to compute the vector addition theorem," J. Electromagn. Waves Applic., Vol. 7, No. 5, 651-665, 1993.
doi:10.1163/156939393X00787

20. Kishk, A. A., G. Zhou, and A. W. Glisson, "Analysis of dielectricresonator antennas with emphasis on hemispherical structures," IEEE Antennas and Propagation Magazine, Vol. 36, No. 2, 20-31, April 1994.
doi:10.1109/74.275547

21. Leong, M.-S., L.-W. Li, P.-S. Kooi, T.-S. Yeo, and X. Ma, "TE11- mode excitation of a circular aperture antenna covered by a layered dielectric hemi-spherical radome," International Journal of Applied Electromagnetics & Mechanics, Vol. 10, No. 3, 259-278, June 1999.
doi:10.3233/JAE-1999-145

22. Li, L.-W., M.-S. Leong, L. Zhou, T.-S. Yeo, and P.-S. Kooi, "An improved analysis of antenna radiation from a circular aperture covered by a dielectric hemi-spherical radome shell," IEE Proceedings on Microwave, Antennas and Propagation, Vol. 147, No. 2, 144-150, April 1999.
doi:10.1049/ip-map:20000217

23. Li, L.-W., P.-S. Kooi, M.-S. Leong, and T.-S. Yeo, "Electromagnetic dyadic Green’s function in spherically multilayered media," IEEE Trans. Microwave Theory Tech., Vol. 42, No. 12, Part A, 2302–2310, December 1994.

24. Stratton, J. A., Electromagnetic Theory, McGraw-Will, New York, 1941.

25. Balanis, C. A., Antenna Theory: Analysis and Design, 2nd edition, John Wiley & Sons, New York, 1997.


© Copyright 2014 EMW Publishing. All Rights Reserved