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Polyester-styrene polymer composites of high permittivity ceramic nano powders (barium titanate) are fabricated and electrically measured for antenna applications. It is shown that the usage of high permittivity ceramic contents can increase the relative permittivity of the composites to around 10 at microwave frequencies. The Polyester-styrene composite material preparation technique is described...
We report on the deposition of SiC-layers in a newly constructed high-temperature chemical vapor deposition system. With this system SiC-layers are deposited onto tape-casted SiC-ceramic substrates (10/spl times/10 cm/sup 2/) at deposition temperatures ranging from 1200 to 1450/spl deg/C to study the chemical stability, the smoothness, and the electrical resistivity of the SiC-layers. The SiC-layers...
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