Fabrication of Wideband Low-Profile Dielectric Patch Antennas from Temperature Stable 0.65 CaTiO3-0.35 LaAlO3 Microwave Dielectric Ceramic

被引：29

作者：

Du, Chao ^{[1
,2
]}

Zhou, Di ^{[1
,2
]}

Li, Rui-Tao ^{[1
,2
]}

Chen, He-Tuo ^{[3
,4
]}

Zhou, Guo-Hong ^{[3
,4
]}

Tang, Bin ^{[5
]}

Darwish, Moustafa Adel ^{[6
]}

Xia, Song ^{[1
,2
]}

Xu, Zhuo ^{[1
,2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Minist Educ, Multifunct Mat & Struct Key Lab, Xian 710049, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Int Ctr Dielect Res, Xian 710049, Shaanxi, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, Transparent Ceram Res Ctr, Shanghai 201899, Peoples R China

[4] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[5] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 611731, Sichuan, Peoples R China

[6] Tanta Univ, Fac Sci, Phys Dept, Al Geish St, Tanta 31527, Egypt

来源：

ADVANCED ELECTRONIC MATERIALS | 2022年 / 8卷 / 09期

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

dielectric patch antennas; low-profile; microwave dielectric ceramics; wideband antenna; RESONATOR ANTENNA; COMPLEX PERMITTIVITY; ARRAY;

D O I：

10.1002/aelm.202101414

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, the medium dielectric constant 0.65CaTiO(3)-0.35LaAlO(3) (CTLA) composite microwave ceramic is employed to introduce in dielectric patch antennas (DPA). Typical, high-performance microwave dielectric properties of epsilon(r) approximate to 44.8, Q x f approximate to 43 950 GHz@3.67 GHz and TCF approximate to 0 ppm degrees C-1 can be obtained by solid-state reaction method in CTLA composite microwave ceramics sintered at 1450 degrees C for 2 h. Then, the CTLA composite ceramic patch fired with silver coating is mounted on the Rogers RO4003C substrate operating as a magnetic wall boundary. A simplified cavity-like theoretical model is used to analyze the proposed DPA structure and the accuracy of this antenna model is evaluated by the theoretical results from a commercial CST Microwave Studio 2019. Based on this, the CTLA composite ceramic physical property is modified to enhance the radiation efficiency and reduce profile of the DPA. The higher-order TM121 mode is brought close to the dominant TM101 mode by taking advantage of the multimode characteristics of the dielectric patch resonator and introducing a sintered silver slot in the ceramic dielectric patch. For demonstration, the proposed DPA prototype operating in the multiprobe antenna near the field measurement system is implemented and measured.

引用

页数：10

共 44 条

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