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Ceramic-Polymer Composites with Low Dielectric Loss for Microwave Antennas and Wireless Sensors

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Abstract:

The low dielectric loss ceramic-polymer composites were prepared by extrusion processing technique with high density polyethylene (HDPE) as matrix and high permittivity ceramic powder in BaO-Nd2O3-TiO2 (BNT) system as filter. The dielectric response in microwave frequency range was characterized, and the experimentally observed dielectric properties were compared with the theoretical models. The relative permittivity of the composites is increased from 3 to 10 with the increase in the volume fraction of BNT filter from 10 to 40 vol%. The dielectric losses of composites are less than 0.001 for all compositions. For 40 vol% ceramic loaded HDPE, the relative permittivity of 10 and loss tangent of 0.0007 at 7 GHz were obtained. The BNT-HDPE composites are promising materials for microwave dielectric antenna applications.

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Proceedings of the International Congress on Ceramics V View Preview

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Periodical:

Key Engineering Materials (Volume 655)

Pages:

153-158

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.655.153

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Online since:

July 2015

Authors:

Li Zhang, Zhen Xing Yue*, Long Tu Li

Keywords:

Microwave Antennas, Microwave Dielectrics, Polymer-Ceramic Composites

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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