Wideband stair-shaped dielectric resonator antennas

被引：63
|
作者：
Chair, R.
Kishk, A. A.
Lee, K. F.
机构：
[1] Jaybeam Wireless, Hickory, NC 28602 USA
[2] Univ Mississippi, Dept Elect Engn, University, MS 38677 USA
[3] Univ Mississippi, CAESR, University, MS 38677 USA
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2007年 / 1卷 / 02期
关键词：
D O I：
10.1049/iet-map:20060029
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Wideband stair-shaped dielectric resonator antenna (DRAs) are designed. Wide bandwidths are achieved with one-step or two-steps stair geometries. Cricular and square cross-sections are discussed with two different excitation methods: coaxial feed and aperture coupled. The DRAs are designed in the X-band. An impedance bandwidth (S-11 < -10 dB) of 54.3% is obtained with the two-steps stair-shaped DRA. The antennas have broadside radiation patterns in all cases across the matching band. In addition, embedding the base into another dielectric material reduces the size of the stair-shaped DRA. Simulation results are compared with measurements and reasonable agreement is obtained.
引用
收藏
页码：299 / 305
页数：7
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