Analysis of a ceramic filled bio-plastic composite sandwich structure

Design and analysis of a ceramic-filled bio-plastic composite sandwich structure is presented. This proposed high-dielectric structure is used as a substrate for patch antennas. A meandered-strip line-fed fractal-shape patch antenna is designed and fabricated on a copper-laminated sandwich-structured substrate. Measurement results of this antenna show 44% and 20% of bandwidths with maximum gains of 3.45 dBi and 5.87 dBi for the lower and upper bands, respectively. The half-power beam widths of 104 degrees and 78 degrees have been observed from the measured radiation pattern at the two resonance frequencies 0.9 GHz and 2.5 GHz. (C) 2013 AIP Publishing LLC.