Microwave dielectric properties of Nd(Ti0.5−xZrx)W0.5O4 ceramics for application in antenna temperature sensor

Microwave dielectric properties of Nd(Ti0.5−xZrx)W0.5O4 ceramics for application in antenna... 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 ( $${\varepsilon _r}$$ ε 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 ( $${\varepsilon _r}$$ ε r ) of 19.8, a quality factor (Q × f) of 17,300 GHz, and a temperature coefficient of resonant frequency ( $${\tau _f}$$ τ f ) of − 54 ppm/°C. The proposed patch antenna sensor had a sensitivity of 0.112 MHz/°C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Microwave dielectric properties of Nd(Ti0.5−xZrx)W0.5O4 ceramics for application in antenna temperature sensor

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-017-8424-y
Publisher site
See Article on Publisher Site

Abstract

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 ( $${\varepsilon _r}$$ ε 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 ( $${\varepsilon _r}$$ ε r ) of 19.8, a quality factor (Q × f) of 17,300 GHz, and a temperature coefficient of resonant frequency ( $${\tau _f}$$ τ f ) of − 54 ppm/°C. The proposed patch antenna sensor had a sensitivity of 0.112 MHz/°C.

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: Dec 16, 2017

References

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