Non-Uniform Sinusoidally Modulated Half-Mode Leaky-Wave Lines for Near-Field Focusing Pattern Synthesis

被引：61

作者：

Javier Martinez-Ros, Alejandro ^{[1
]}

Luis Gomez-Tornero, Jose ^{[1
]}

Losada, Vicente ^{[2
]}

Mesa, Francisco ^{[2
]}

Medina, Francisco ^{[3
]}

机构：

[1] Univ Politecn Cartagena, Dept Commun & Informat Technol, Cartagena 30202, Spain

[2] Univ Seville, Escuela Tecn Super Ingn Informat, Dept Appl Phys, Microwaves Grp, E-41012 Seville, Spain

[3] Univ Seville, Fac Phys, Dept Elect & Electromagnetism, E-41012 Seville, Spain

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2015年 / 63卷 / 03期

关键词：

Backward radiation; half-mode leaky-wave antennas; near-field focusing; microwave lens; sinusoidal modulation; tapered leaky mode; HIGH IMPEDANCE SURFACE; MICROSTRIP-LINE; ARRAY ANTENNAS; SLOT ARRAY; WIDTH; RADIATION; PROPAGATION; LENSES; GUIDE; METASURFACES;

D O I：

10.1109/TAP.2014.2386339

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 novel non-uniform sinusoidally modulated half-mode microstrip structure with application to near-field focused leaky-wave radiation in the backward Fresnel zone is proposed. First, it is presented a dispersion analysis of the constituent backward leaky wave in the sinusoidally modulated unit cell in half-width microstrip technology. This information is then used to design a finite non-uniform line that focuses the radiated fields at the desired point. Finally, eight similar line sources are arranged in a radial array to generate a three-dimensional focused spot located at the desired focal length over the simple central coaxial feeding. Simulated and experimental results are presented to validate the proposed simple approach.

引用

页码：1022 / 1031

页数：10

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