volume | PIER Journals

Abstract

A novel wideband rectangular dielectric resonator antenna (DRA) is proposed in this paper. A hybrid structure with an isolated dielectric resonator (DR) and an equivalent air-dielectric DR is introduced by lifting the resonator from the ground plane. The hybrid structure is excited by a slot-fed mechanism to obtain a smooth transition between each resonant mode. The resonant modes of the isolated DR and the equivalent DR are merged together to form a wideband impedance bandwidth. It is found that the bandwidth of the proposed antenna can be greatly enhanced by using the hybrid DRA structure instead of the case mounted on the ground plane. A detailed parametric study is carried out to analyze the characteristics of the proposed antenna. Measured results show that the proposed DRA has a 10 dB impedance bandwidth of 61% from 2.4 GHz to 4.5 GHz and the radiation pattern is stable through the operating frequency.

1. Shum, S. M. and K. M. Luk, "Stacked annular-ring dielectric resonator antenna excited by axi-symmetric coaxial probe," IEEE Trans. Antennas Propagat., Vol. 43, 889-892, Aug. 1995.
doi:10.1109/8.402212

2. Kishk, A. A., Y. Yin, and A. W. Glisson, "Conical dielectric resonator antennas for wide-band applications," IEEE Trans. Antennas Propagat., Vol. 50, 469-474, Apr. 2002.
doi:10.1109/TAP.2002.1003382

3. Walsh, A. G., S. D. Young, and S. A. Long, "An investigation of stacked and embedded cylindrical dielectric resonator antennas," IEEE Antennas Wireless Propag. Lett., Vol. 5, 130-133, 2006.
doi:10.1109/LAWP.2006.873935

4. Kishk, A. A., "Wide-band truncated tetrahedron dielectric sesonator antenna excited by a coaxial probe," IEEE Trans. Antennas Propagat., Vol. 51, 2913-2917, Oct. 2003.
doi:10.1109/TAP.2003.816300

5. Denidni, T. A., Q. J. Rao, and A. R. Sebak, "Broadband L-shaped dielectric resonator antenna," IEEE Antennas Wireless Propag. Lett., Vol. 4, 453-454, 2005.
doi:10.1109/LAWP.2005.860198

6. Rao, Q. J., T. A. Denidni, and A. R. Sebak, "Broadband compact stacked T-shaped dra with equilateral-triangle cross sections," IEEE Antennas Wireless Propag. Lett., Vol. 5, 130-133, 2006.
doi:10.1109/LAWP.2006.875886

7. Petosa, A., N. Simons, R. Siushansiana, A. Ittipiboon, and M. Cuhaci, "Design and analysis of multisegment dielectric resonator antennas," IEEE Trans. Antennas Propag., Vol. 48, 738-742, May 2000.
doi:10.1109/8.855492

8. Coulibaly, Y., T. A. Denidni, and H. Boutayeb, "Broadband mi-crostripfed dielectric resonator antenna for X-band applications," IEEE Antennas Wireless Propag. Lett., Vol. 7, 341-345, 2008.
doi:10.1109/LAWP.2008.921326

9. Kumar, A. V. P., V. Hamsakutty, J. Yohannan, and K. T. Mathew, "A wideband conical beam cylindrical dielectric resonator antenna," IEEE Antennas Wireless Propag. Lett., Vol. 6, 15-17, 2007.
doi:10.1109/LAWP.2006.890747

10. Liang, X. L., T. A. Denidni, and L. N. Zhang, "Wideband L-shaped dielectric resonator antenna with a conformal inverted-trapezoidal patch feed," IEEE Trans. Antennas Propag., Vol. 57, 272-274, 2009.

11. Liang, X. L. and T. A. Denidni, "H-shaped dielectric resonator antenna for wideband applications," IEEE Antennas Wireless Propag. Lett., Vol. 7, 163-166, 2008.
doi:10.1109/LAWP.2008.922051

12. Mongia, R. K. and A. Ittipiboon, "Theoretical and experimental investigations on rectangular dielectric resonator antennas," IEEE Trans. Antennas Propag., Vol. 45, No. 9, 1348-1356, Sep. 1997.
doi:10.1109/8.623123

13. Zainud-Deen, S. H., H. A. El-Azem Malhat, and K. H. Awadalla, "A single-feed cylindrical superquadric dielectric resonator antenna for circular polarization," Progress In Electromagnetics Research, Vol. 85, 409-424, 2008.
doi:10.2528/PIER08090904

14. Abdulla, P. and A. Chakraborty, "Rectangular waveguide-fed hemispherical dielectric resonator antenna," Progress In Electromagnetics Research, Vol. 83, 225-244, 2008.
doi:10.2528/PIER08050701

15. Al-Zoubi, A. S., A. A. Kishk, and A. W. Glisson, "Analysis and Design of a rectangular dielectric resonator antenna fed by dielectric image line through narrow slots," Progress In Electromagnetics Research, Vol. 77, 379-390, 2007.
doi:10.2528/PIER07082504

16. Kishk, A. A., A. W. Glisson, and G. P. Junker, "Bandwidth enhancement for split cylindrical dielectric resonator antennas," Progress In Electromagnetics Research, Vol. 33, 97-118, 2001.
doi:10.2528/PIER00122803

17. Rao, Q., T. A. Denidni, A. R. Sebak, and R. H. Johnston, "On improving impedance matching of a CPW fed low permittivity dielectric resonator antenna," Progress In Electromagnetics Research, Vol. 53, 21-29, 2005.
doi:10.2528/PIER04062901

18. Junker, G. P., A. A. Kishk, A. W. Glisson, and D. Kajfez, "Effect of an air gap on a cylindrical dielectric resonator antennas operating in the TM01 mode," Electronics Letters, Vol. 30, No. 2, 97-98, 1994.
doi:10.1049/el:19940114

19. Ryu, K. S. and A. A. Kishk, "Ultra-Wide band dielectric resonator antenna with broadside patterns mounted on a vertical ground plane edge," IEEE Trans. Antennas and Propagation, Vol. 58, 1047-1053, Apr. 2010.
doi:10.1109/TAP.2010.2041160

Professor Zi-Bin Weng

Dr. Xiao-Ming Wang

Dr. Yong-Chang Jiao

Dr. Fu-Shun Zhang