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ELECTROMAGNETIC CHARACTERISTICS OF CONFORMAL DIPOLE ANTENNAS OVER A PEC SPHERE

By J. Soleiman-Meiguni, M. Kamyab, and A. Hosseinbeig

Full Article PDF (437 KB)

Abstract:
Rigorous mathematical Method of Moments (MoMs) for analyzing various radiating spherical structures is presented in this paper by using Dyadic Green's Functions (DGFs) in conjunction with Mixed Potential Integral Equation (MPIE) formulation. With the aid of linear Rao-Wilton-Glisson (RWG) triangular basis functions and by converting spherical DGFs to Cartesian DGFs, a conformal dipole antenna in free space and over a Perfect Electric Conductor (PEC) sphere is analyzed. The characteristics of such antennas are computed by applying multilayer spherical DGFs and asymptotic approximation methods. Mutual couplings between elements of a conformal dipole antenna array in free space and over a conducting sphere are also investigated. Good agreement between the computational results obtained by the proposed methods and those obtained from commercial simulator packages shows accuracy and high convergence speed of the presented methods.

Citation:
J. Soleiman-Meiguni, M. Kamyab, and A. Hosseinbeig, "Electromagnetic Characteristics of Conformal Dipole Antennas Over a PEC Sphere," Progress In Electromagnetics Research M, Vol. 26, 85-100, 2012.
doi:10.2528/PIERM12081807

References:
1. Chew, W. C., Waves and Fields in Inhomogeneous Media, IEEE Press Series on Electromagnetic Waves, 1995.

2. Tai, C. T., Dyadic Green's Functions in Electromagnetics Theory, IEEE Press Series on Electromagnetic Waves, 1994.

3. Okhmatovsk, V. I. and A. C. Cangellaris, "Efficient calculation of the electromagnetic dyadic Green's function in spherical layered media," IEEE Trans. Antennas Propag., Vol. 51, No. 12, 3209-3220, Dec. 2003.
doi:10.1109/TAP.2003.820952

4. He, M. and X. Xu, "Closed-form solutions for analysis of cylindrically conformal microstrip antennas with arbitrary radii," IEEE Trans. Antennas Propag., Vol. 53, No. 1, 518-525, Jan. 2005.
doi:10.1109/TAP.2004.838772

5. Tam, W. Y. and K. M. Luk, "Resonance in spherical-circular microstrip structures," IEEE Trans. Microw. Theory Tech., Vol. 39, No. 4, 700-704, Apr. 1991.
doi:10.1109/22.76435

6. Huia, H. T. and E. K. N. Yungb, "Dyadic Green's functions of a spherical cavity filled with a Chiral medium," Journal of Electromagnetic Waves and Applications, Vol. 15, No. 9, 1229-1229, 2001.
doi:10.1163/156939301X01138

7. Khamas, S. K., "Asymptotic extraction approach for antennas in a multilayered spherical media," IEEE Trans. Antennas Propag., Vol. 58, No. 3, 1003-1008, Mar. 2010.
doi:10.1109/TAP.2009.2039333

8. Li, L. W., P. S. Kooi, M. S. Leong, and T. S. Yeo, "Electromagnetic dyadic Green's function in spherically multilayered media," IEEE Trans. Microw. Theory Tech., Vol. 42, 2302-2310, Dec. 1994.

9. Macon, C. A., K. D. Trott, and L. C. Kempel, "A practical approach to modeling doubly curved conformal microstrip antennas," Progress In Electromagnetics Research, Vol. 40, 295-314, 2003.
doi:10.2528/PIER02122903

10. Arakakia, D. Y., D. H. Wernerb, and R. Mittrac, "A technique for analyzing radiation from conformal antennas mounted on arbitrarily-shaped conducting bodies," Journal of Electromagnetic Waves and Applications, Vol. 14, No. 11, 1505-1523, 2000.
doi:10.1163/156939300X00266

11. Gibson, W. C., The Method of Moments in Electromagnetics, Chapman & Hall/CRC, Taylor & Francis Group, 2008.

12. Rao, S. M., D. R. Wilton, and A. W. Glisson, "Electromagnetic scattering by surfaces of arbitrary shape," IEEE Trans. Antennas Propag., Vol. 30, 409-418, May 1982.
doi:10.1109/TAP.1982.1142818

13. Harrington, R. F., Field Computation by Moment Methods, IEEE Press Series on Electromagnetic Waves, 1991.

14. Khamas, S. K., "Electromagnetic radiation by antennas of arbitrary shape in a layered spherical media," IEEE Trans. Antennas Propag., Vol. 57, No. 12, 3827-383, Dec. 2009.
doi:10.1109/TAP.2009.2033444

15. Harrington, R. F., Time-Harmonic Electromagnetic Fields, IEEE Press, John Wiley & Sons, Inc., 2001.
doi:10.1109/9780470546710

16. Pozar, D. M., "Microwave Engineering," John Wiley & Sons, Inc., Vol. 3rd, 2005.

17., "CST Reference Manual,", Computer Simulation Technology, Darmstadt, Germany, 2008.

18. Hansen, R. C., Geometrical Theory of Diffraction, IEEE Press, New York, 1981.


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