Microwave Dielectric Characteristics of ZnTa1.7Nb0.3O6 Ceramics
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概要
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ZnTa2O6 ceramic sintered at 1300°C exhibits the microwave dielectric characteristics of dielectric constant $\varepsilon_{\text{r}}{=}36.1$, quality value $Q{\times} f{=}60180$ GHz, temperature coefficient of resonant frequency $\tau_{\text{f}}{=}9.31$ ppm/°C, and density $d{=}8.184$ g/cm3, and 1200°C-sintered ZnNb2O6 ceramic shows the microwave dielectric characteristics of $\varepsilon_{\text{r}}{=}23.9$, $Q{\times} f{=}77270$ GHz, $\tau_{\text{f}}{=}-58.2$ ppm/°C, and $d{=}5.436$ g/cm3. An empirical model is used to predict that $\tau_{\text{f}}{=}0$ ppm/°C in ZnTa1.72Nb0.28O6. Therefore, ZnTa1.7Nb0.3O6 is adopted as the main composition for developing dielectric resonators with $\tau_{\text{f}}$ values close to 0 ppm/°C, and its sintering and microwave dielectric characteristics are investigated in this study. As the sintering temperature increases, the $\varepsilon_{\text{r}}$, $Q{\times} f$, and $\tau_{\text{f}}$ values of ZnTa1.7Nb0.3O6 ceramics increase and they saturate in 1300°C-sintered ceramics.
- 2003-11-15
著者
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Meen Teen-hang
Department Of Electrical Engineering Southern Taiwan University Of Technology
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Chen Ying-chung
Department Of Electrical Engineering National Sun Yat-sen University
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Cheng Chien-min
Department Of Electronic Engineering Nan-tai Institute Of Technology
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Meen Teen-Hang
Department of Electrical Engineering, Southern Taiwan University of Technology, Yung-Kang City, Tainan, Taiwan, R.O.C.
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Chen Ying-Chung
Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C.
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Yang Chung-Fu
Department of Electronic Engineering, Chinese Air Force Academy, Kangshan, Kaohsiung, Taiwan, R.O.C.
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Cheng Chien-Min
Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C.
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