Shape Synthesis of Multi-mode Dielectric Resonator Antennas Using Characteristic Modes
Keywords:characteristic modes, dielectric resonator antennas, multi-mode antennas, shape synthesis
This paper demonstrates a shape synthesis technique for multi-mode dielectric resonator antennas using binary genetic algorithm and characteristic mode analysis. The cost function for the synthesis process is defined from characteristic modal parameters, such as modal quality factors and self-resonance frequencies. Since only modal parameters are involved in the cost function, the shape synthesis process is made independent of feeds. In the paper, we demonstrate the shape synthesis of a DRA with three self-resonant modes at 3 GHz.
S. Long, M. McAllister, and Liang Shen, “The resonant cylindrical dielectric cavity antenna,” IEEE Trans. Antennas Propag., vol. 31, no. 3, pp. 406-412, May 1983.
K. M. Luk, “Dielectric resonator antennas,” Research Studies Pr., 2003.
Y. Oh, V. Bharambe, B. Mummareddy, J. Martin, J. McKnight, M. A.Abraham, J. M. Walker, K. Rogers, B. Conner, P. Cortes, E. MacDonald, and J. J. Adams, “Microwave dielectric properties of zirconia fabricated using nanoparticle jetting™,” Additive Manufacturing, vol. 27, pp. 586-594, 2019.
G. Almpanis, C. Fumeaux, and R. Vahldieck, “Comparison of various non-canonical rectangular dielectric resonator antennas for enhanced bandwidth,” in 2008 IEEE Antennas and Propagation Society International Symposium. IEEE, pp. 1-4, 2008.
X. Liang and T. A. Denidni, “H-shaped dielectric resonator antenna for wideband applications,” IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 163-166, 2008.
B. Yang, J. Zhou, and J. J. Adams, “A shape-first, feed-next design approach for compact planar mimo antennas,” Progress In Electromagnetics Research, vol. 77, pp. 157-165, 2019.
H. Alroughani, The Shape Synthesis of Dielectric Resonator Antennas for Wireless Communication Systems. The Pennsylvania State University, 2018.
R. Harrington and J. Mautz, “Theory of characteristic modes for conducting bodies,” IEEE Trans. Antennas Propag., vol. 19, no. 5, pp. 622-628, 1971.
B. Yang and J. J. Adams, “Quality factor calculations for the characteristic modes of dielectric resonator antennas,” in Radio Science Meeting (USNC-URSI NRSM), 2017 United States National Committee of URSI National. IEEE, pp. 1-2, 2017.