Higher-Order Modes in High-Permittivity Cylindrical Dielectric Resonator Antenna Excited by an Off-Centered Rectangular Slot

被引：8
|
作者：
Avadanei, O. G. [1 ]
Banciu, M. G. [2 ]
Nedelcu, L. [2 ]
机构：
[1] Alexandru Ioan Cuza Univ, Dept Phys, Iasi 700506, Romania
[2] Natl Inst Mat Phys, Bucharest 077125, Romania
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷
关键词：
Dielectric resonator antennas; superior modes;
D O I：
10.1109/LAWP.2014.2344860
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：
In this letter, we study the higher-order modes excited in a high-permittivity cylindrical dielectric resonator antenna (DRA), situated asymmetrically on top of a rectangular slot in the ground plane of a microstrip line. Besides the modes excited by a symmetric positioning of the DRA above the feeding slot, we identified five new modes: TEme(010), TEme(011), TEme(210), TEme(020), and TM212 respectively. The higher-order modes offer to the DRA antenna some interesting features: They have different radiation patterns for different operating modes; modes with close resonance frequency give wideband capabilities; and sometimes, when a mode has poor performance in one polarization, it is possible that another mode with close frequency can compensate it.
引用
收藏
页码：1585 / 1588
页数：4
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