New three-phase polymer-ceramic composite materials for miniaturized microwave antennas

Unique polymer-ceramic composites for microwave antenna applications were prepared via melt extrusion using high-density polyethylene (HDPE) as the matrix and low-density polyethylene (LDPE) coated BaO–Nd2O3–TiO2 (BNT) ceramic-powders as the filler. By incorporating LDPE into the composites via a co...

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Bibliographic Details
Published in:AIP advances 2016-09, Vol.6 (9), p.095319-095319-9
Main Authors: Zhang, Li, Zhang, Jie, Yue, Zhenxing, Li, Longtu
Format: Article
Language:English
Subjects:
Barium oxides
Ceramic coatings
Ceramic powders
Ceramics
Composite materials
Dielectric loss
Dielectrics
Extrusion
Global positioning systems
GPS
High density polyethylenes
Low density polyethylenes
Microstrip antennas
Microwave antennas
Permittivity
Polyethylene
Polymer matrix composites
Satellite navigation systems
Thermomechanical properties
Titanium dioxide
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Summary:Unique polymer-ceramic composites for microwave antenna applications were prepared via melt extrusion using high-density polyethylene (HDPE) as the matrix and low-density polyethylene (LDPE) coated BaO–Nd2O3–TiO2 (BNT) ceramic-powders as the filler. By incorporating LDPE into the composites via a coating route, high ceramic-powder volume content (up to 50 vol%) could be achieved. The composites exhibited good microwave dielectric and thermomechanical behaviors. As BNT ceramic content increased from 10 vol% to 50 vol%, the permittivity of the composites increased from 3.45 (9 GHz) to 11.87 (7 GHz), while the dielectric loss remained lower than 0.0016. Microstrip antennas for applications in global positioning systems (GPS) were designed and fabricated from the composites containing 50 vol% BNT ceramics. The results indicate that the composites that have suitable permittivity and low dielectric loss are promising candidates for applications in miniaturized microwave devices, such as antennas.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4964150