Bandwidth Enhancement of 2-D Leaky-Wave Antennas With Double-Layer Periodic Surfaces

被引：67

作者：

Mateo-Segura, Carolina ^{[1
]}

Feresidis, Alexandros P. ^{[2
]}

Goussetis, George ^{[1
]}

机构：

[1] Heriot Watt Univ, Sch Engn & Phys Sci, Inst Sensors Signals & Syst, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Univ Birmingham, Sch Elect Elect & Comp Engn, Birmingham B15 2TT, W Midlands, England

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

Broadband antennas; high directive antennas; leaky-wave antennas (LWAs); periodic surfaces; FABRY-PEROT CAVITY; HIGH-GAIN; BAND; RADIATION; DESIGN;

D O I：

10.1109/TAP.2013.2292076

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：

Broadband high-gain 2-D Fabry-Perot (FP) leaky-wave antennas (LWAs) consisting of two periodic metallodielectric arrays over a ground plane are presented. Full-wave method of moments (MoM) is employed for the estimation of the near fields upon plane wave illumination and the extraction of the far field directivity and radiation patterns of the LWA. This yields a fast and rigorous tool for the characterization of this type of antennas. Qualitative design guidelines to tailor the antenna directivity bandwidth are provided for the first time based on a detailed analysis of the excited modes. Numerical examples are given to demonstrate the technique and prove the improvement in the antenna bandwidth. The proposed antenna exhibits a six-fold bandwidth improvement compared with the single array LWA with the same directivity. Simulated and experimental results from a finite size antenna prototype are presented.

引用

页码：586 / 593

页数：8

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