A new class of nondiffracting pulses based on focusing leaky waves

被引：0
|
作者：
Fuscaldo, Walter [1 ,2 ]
Comite, Davide [1 ]
Boesso, Alessandro [1 ]
Baccarelli, Paolo [3 ]
Burghignoli, Paolo [1 ]
Galli, Alessandro [1 ]
机构：
[1] Sapienza Univ Rome, Dept Informat Engn Elect & Telecommun DIET, I-00184 Rome, Italy
[2] Univ Rennes 1, UMR CNRS 6164, IETR, F-35042 Rennes, France
[3] Roma Tre Univ, Dept Engn, I-00146 Rome, Italy
来源：
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES | 2018年 / 10卷 / 5-6期
关键词：
Annular strip grating; leaky waves; millimeter; waves; near-field focusing; nondiffracting waves; BESSEL BEAMS; GENERATION; SURFACE;
D O I：
10.1017/S1759078718000612
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 work, we propose an azimuthally-invariant periodic leaky-wave (LW) radiator for the generation of Bessel beams and X-waves by means of backward cylindrical LWs at millimeter wavelengths. A rigorous framework is first outlined to understand the theoretical constraints of such a novel design. A specific attention is devoted to the impact of the attenuation constant on the focusing properties of the generated Bessel beams. On this basis, a practical design is then proposed to meet the previous requirements. Numerical results for different frequency spectra confirm the interesting capabilities of the considered structure, paving the way for the first generation of nondiffracting pulses produced by focusing LWs.
引用
收藏
页码：682 / 689
页数：8
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