STACKED ANNULAR RING DIELECTRIC RESONATOR ANTENNA EXCITED BY AXISYMMETRICAL COAXIAL PROBE

被引：83
作者：
SHUM, SM
LUK, KM
机构：
[1] Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1995年 / 43卷 / 08期
关键词：
D O I：
10.1109/8.402212
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：
A stacked annular ring dielectric resonator (DR) antenna composed of commercially available dielectric resonators and excited by aai-symmetric coaxial probe is studied computationally using the finite-difference time-domain (FDTD) method, The numerical results are checked against experimental measurements, and good agreement is observed, it is demonstrated that the introduction of air-gaps between the two DR's and also between the driven DR and the ground plane can improve the impedance bandwidth of the antenna significantly. The effects of the air-gaps thickness on the return loss and the bandwidth are discussed, The far-fields are also calculated by applying the electromagnetic field equivalence principle. The antenna produces an end-fire radiation held similar to that of an electric monopole.
引用
收藏
页码：889 / 892
页数：4
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