کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10629683 | 991139 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-Q dielectrics using ZnO-modified Li2TiO3 ceramics for microwave applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microwave dielectric properties of the (1 â x)Li2TiO3-xZnO (x = 0.1-0.5) ceramic system prepared by mixed oxide route have been investigated. The rock-salt structured (1 â x)Li2TiO3-xZnO were characterized by using X-ray diffraction spectra, scanning electron microcopy (SEM). The dielectric properties are strongly dependent on the compositions, the densifications and the microstructures of the specimens. The decrease of Q Ã f value at high-level ZnO addition (x > 0.3) was owing to the intensity of the (0 0 2) superstructure reflection decreased and became disordered rock-salt structure. For practical applications, a new microwave dielectric material 0.7Li2TiO3-0.3ZnO is suggested and it possesses a good combination of dielectric properties with an εr of â¼22.95, a Q Ã f of â¼99,800 GHz (measured at 8.91 GHz), and a Ïf of â¼0 ppm/°C. A low-loss dielectric resonant antenna using aperture-coupled cylindrical dielectric resonant was designed and fabricated using the proposed dielectric to study its performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 12, September 2012, Pages 3287-3295
Journal: Journal of the European Ceramic Society - Volume 32, Issue 12, September 2012, Pages 3287-3295
نویسندگان
Cheng-Liang Huang, Yu-Wei Tseng, Jhih-Yong Chen,