Design and Fabrication of a C-Band Patch Antenna with Low Loss BaM4Si5O17 Microwave Dielectric Ceramics

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-10-14 DOI:10.1021/acsami.4c11111

Zheyu Liu, Kang Du, Chengyun Li, Weiping Gong, Ting Wang, Yiyang Cai, Yaodong Liu, Guochao Wei, Weijia Han, Yi Xiong, Wen Lei, Shengxiang Wang

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Abstract

Single-phase BaM₄Si₅O₁₇ (M = Yb, Er, Y, Ho) ceramics have been investigated for their crystal structures, microwave dielectric properties, flexural strength, and potential applications in dielectric antennas. Rietveld refinement and TEM analysis revealed that the BaM₄Si₅O₁₇ ceramics exhibit a monoclinic structure (space groups: P2₁/m). The ε_r of the BaM₄Si₅O₁₇ ceramics was dominated by ionic polarizability and ρ_rel. The Q × f values were considerably larger at BaM₄Si₅O₁₇ (M = Yb and Y) ceramics with the high U_total and low intrinsic dielectric loss. The τ_f values were controlled by the MO₆ octahedron distortion and ^–V_Ba. The flexural strength was mainly dominated by pores and average grain size and reached the maximum value (156 MPa) at BaY₄Si₅O₁₇ ceramic with small average gain sizes and high relative density. Additionally, a patch antenna was fabricated using high-performance BaY₄Si₅O₁₇ ceramic characterized by a ε_r value of 9.02, a Q × f value of 60620 at 12.30 GHz, and a τ_f value of −37.65 ppm/°C. This design achieved a high simulated radiation efficiency of 82.70% and a gain of 5.60 dBi at 6.97 GHz. indicating potential applications of BaY₄Si₅O₁₇ ceramic because of its low dielectric loss and high flexural strength.

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使用低损耗 BaM4Si5O17 微波介电陶瓷设计和制作 C 波段贴片天线

对单相 BaM4Si5O17（M = Yb、Er、Y、Ho）陶瓷的晶体结构、微波介电性能、抗弯强度以及在介电天线中的潜在应用进行了研究。里特维尔德细化和 TEM 分析表明，BaM4Si5O17 陶瓷呈现单斜结构（空间群：P21/m）。BaM4Si5O17 陶瓷的 εr 由离子极化率和ρrel 主导。在具有高Utotal和低本征介电损耗的BaM4Si5O17（M = Yb和Y）陶瓷中，Q × f值要大得多。τf 值受 MO6 八面体畸变和 -VBa 的控制。抗弯强度主要受孔隙和平均晶粒尺寸的影响，在平均增益尺寸小、相对密度高的 BaY4Si5O17 陶瓷中达到最大值（156 兆帕）。此外，还利用高性能 BaY4Si5O17 陶瓷制作了贴片天线，其εr 值为 9.02，12.30 GHz 时的 Q × f 值为 60620，τf 值为 -37.65 ppm/°C。该设计的模拟辐射效率高达 82.70%，在 6.97 GHz 时的增益为 5.60 dBi，这表明 BaY4Si5O17 陶瓷具有低介电损耗和高抗弯强度的潜在应用价值。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.