A tunable ferroelectric antenna for fixed-frequency scanning applications

被引:40
作者
Lovat, Giampiero [1 ]
Burghignoli, Paolo [1 ]
Celozzi, Salvatore [1 ]
机构
[1] Univ Roma La Sapienza, Dept Elect Engn, I-00184 Rome, Italy
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2006年 / 5卷 / 01期
关键词
ferroelectries; leaky waves; tunable antennas;
D O I
10.1109/LAWP.2006.880694
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, a novel fixed-frequency scanning antenna is proposed. The antenna consists of a grounded substrate-superstrate configuration covered with a two-dimensional periodic array of slots in a conducting plate, fed by a simple source (e.g., a narrow slot on the ground plane); the superstrate is a thin ferroelectric slab that, under a bias voltage, changes its permittivity allowing for a fixed-frequency electronically controlled scanning process. The operating principles of such an antenna are illustrated and numerical results are provided to show the attainable performance with actual ferroelectric materials.
引用
收藏
页码:353 / 356
页数:4
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