Research and Fabrication of a Special-shaped Luneburg Lens Antenna Based on Polymer-Ceramic Composite Material

被引：0
|
作者：
He X. [1 ]
Chen Z. [1 ]
Li L. [2 ]
Shi Y. [2 ]
机构：
[1] School of Materials and Energy, Southwest University, Chongqing
[2] Micro / Nano Optoelectronic Materials and Devices International Science and Technology Cooperation Base of China / Province, Ministry of Micro and Nano Optoelectronic Materials and Devices Jointly Build Collaborative Innovation Center, Chongqing University
来源：
Cailiao Daobao/Materials Reports | 2023年 / 37卷 / 12期
关键词：
3D printing technique; injection molding; permittivity; polymer-ceramic composite; special-shaped Luneburg lens antenna;
D O I：
10.11896/cldb.21100228
中图分类号：
学科分类号：
摘要：
A high-dielectric constant special-shaped Luneburg lens with low quality and excellent performance was proposed in this work to solve the problem of the traditional Luneburg lens, such as the immature material development and heavy weight. The special-shaped Luneburg lens obtained by compressing a low-dielectric-constant Lumberg lens by the quasi-conformal transformation method were composed of a spherical Luneburg lens and two elliptical Luneburg lenses. The polymer-ceramic composites made of polydimethylsiloxane (PDMS) and strontium titanate (SrTiO3) ceramic powder was injected into the 3D printed mold to illustrate the fabrication process of the special-shaped Luneburg lens. The proposed lens had the excellent characteristics of high gain and low side lobe, which were validated by good agreement between the measurement and the simulation. The fabricated lens antenna had a maximum gain value of 20.8 dBi, 22.4 dBi, 22.6 dBi at 8.5 GHz, 10 GHz and 12 GHz, the side lobe level was lower than -19 dB, and the 3 dB beamwidth on the azimuth plane was lower than 9.8°, In addition, the proposed lens is light in weight, simple in material preparation process, and short in fabrication period. The major advantage of the proposed method is the capability to allow the special-shaped Luneburg lens to be fabricated at low temperature in a seamless manner. © 2023 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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