Microwave dielectric properties of Nd(Ti0.5−xZrx)W0.5O4 ceramics for application in antenna temperature sensor
| Autor: | Chih-Lung Hsiao, Min-Zhe Weng, Yue-Xuan Du, Yih-Chien Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Patch antenna Antenna temperature Materials science Microwave dielectric properties Analytical chemistry Sintering 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials visual_art 0103 physical sciences visual_art.visual_art_medium Sensitivity (control systems) Ceramic Electrical and Electronic Engineering 0210 nano-technology Temperature coefficient |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 29:4717-4723 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | The microwave dielectric properties of Nd(Ti0.5−xZrx)W0.5O4 ceramics were examined with a view to their application in mobile communication. The Nd(Ti0.5−xZrx)W0.5O4 ceramics were prepared using the conventional solid-state method. Dielectric constants ( $${\varepsilon _r}$$ ) of 15.4–19.4 and quality factor (Q × f) of 3600–11,100 GHz were obtained for NdTi0.5W0.5O4 ceramics at sintering temperatures in the range 1425–1525 °C for 4 h. A maximum density of 6.68 g/cm3 was obtained for the Nd(Ti0.47Zr0.03W0.5)O4 ceramic, sintered at 1500 °C for 4 h. A Nd(Ti0.47Zr0.03W0.5)O4 ceramic that was sintered at 1500 °C for 4 h had a dielectric constant ( $${\varepsilon _r}$$ ) of 19.8, a quality factor (Q × f) of 17,300 GHz, and a temperature coefficient of resonant frequency ( $${\tau _f}$$ ) of − 54 ppm/°C. The proposed patch antenna sensor had a sensitivity of 0.112 MHz/°C. |
| Databáze: | OpenAIRE |
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