DESIGN OF SUBWAVELENGTH TUNABLE AND STEERABLE FABRY-PEROT/LEAKY WAVE ANTENNAS

被引：52
作者：
Costa, F. [1 ]
Monorchio, A. [1 ]
机构：
[1] Univ Pisa, Dept Informat Engn, I-56122 Pisa, Italy
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER | 2011年 / 111卷
关键词：
LEAKY; IMPEDANCE; SUPERSTRATE; RADIATION; SURFACES; PEROT;
D O I：
10.2528/PIER10111702
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：
The design of a thin tunable and steerable Fabry-Perot antenna is presented. The subwavelength structure is analyzed both by an efficient transmission line model and by full-wave simulations. The tunable antenna consists of a low profile resonant cavity made up of a Partially Reflecting Surface (PRS) placed in close proximity of a tunable high-impedance surface. The active ground plane is synthesized by loading the high-impedance surface with varactor diodes. Such design allows both tuning the high-gain operational frequency and obtaining a beam steering/shaping for each resonant frequency. The transmission line model here presented includes averaged analytical expressions for modelling the tunable high-impedance surface and the partially reflecting surface. All the theoretical speculations are verified by full-wave simulations on a finite size structure.
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收藏
页码：467 / 481
页数：15
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