A novel LiMg2P3O10 microwave dielectric ceramic for ultra-wideband dielectric resonant antenna applications

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Ceramics International Pub Date : 2024-10-01 DOI:10.1016/j.ceramint.2024.09.401

Longxiang Jiang, Qianbiao Du, Linzhao Ma, Guo Tian, Hao Li

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Abstract

In pursuit of the objective of implementing fifth-generation communication technology, a LiMg₂P₃O₁₀ microwave dielectric ceramic was developed in this study, and an ultra-wideband dielectric resonant antenna was fabricated. Rietveld refinement confirmed that the monoclinic crystal structure of LiMg₂P₃O₁₀ ceramics is constituted of MgO₆ octahedral chains and shared angle PO₄ tetrahedra. The impact of chemical bond characteristics on properties was explored through P-V-L theory. The primary contributions to the intrinsic properties were investigated through infrared spectroscopy. The LiMg₂P₃O₁₀ ceramics sintered at 830 °C were found to have the best microwave dielectric properties (ε_r = 6.16, Q × f = 33,573 GHz (at 15.538 GHz), and τ_f = −35.6 ppm/°C). A novel ultra-wideband dielectric resonant antenna with 53.7 % relative bandwidth, 6.53 dBi maximum gain and 81.7 % radiation efficiency was designed and fabricated. Its wide ultra-wideband characteristics makes it suitable for signal transmission in modern wireless communication systems.

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用于超宽带介质谐振腔天线的新型 LiMg2P3O10 微波介质陶瓷

为了实现第五代通信技术的目标，本研究开发了一种 LiMg2P3O10 微波介质陶瓷，并制作了一种超宽带介质谐振天线。里特维尔德精炼证实，LiMg2P3O10 陶瓷的单斜晶体结构由 MgO6 八面体链和共角 PO4 四面体构成。通过 P-V-L 理论探讨了化学键特性对性能的影响。通过红外光谱研究了对内在特性的主要贡献。研究发现，在 830 °C 下烧结的 LiMg2P3O10 陶瓷具有最佳的微波介电性能（εr = 6.16、Q × f = 33,573 GHz（15.538 GHz 时）和 τf = -35.6 ppm/°C）。设计并制作了一种新型超宽带介质谐振腔天线，其相对带宽为 53.7%，最大增益为 6.53 dBi，辐射效率为 81.7%。其宽超宽带特性使其适用于现代无线通信系统中的信号传输。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.