Investigation on the Thin Film Nanocomposite Ceramic-Polymer to Patch Antenna

In this paper, an investigation of the highpermittivity ceramic-polymer composite antenna is performed using Barium Titanate, BaTiO3 nanocomposite ceramic powder mixed with polymer composite of polydimethylsiloxane (PDMS). The ceramic-polymer composite, PDMS-BaTiO3 thin film layer was formed through a spin coating process on the top and the bottom layer of the PDMS substrate for the antenna design in order to achieve an overall antenna size reduction. The proposed patch antennas using the ceramic-polymer composite were analysed at a resonant frequency of 2.45 GHz for WLAN applications regarding antenna performance on return loss, gain, bandwidth, radiation efficiency, and voltage standing wave ratio (VSWR). Two different experimental compositions of 15% and 25% PDMS-BaTiO3 thin film substrate were prepared in the proposed design to create soft, hydrophobic, flexible, resistance against corrosion and lightweight antenna. Significantly, from theoretical analysis and simulation results, it was demonstrated that ferroelectric ceramic-polymer material leads up to 84 % size reduction without having to compromise other antenna performance parameters

A low cost thin film flexible plastic graphene-conductive polymer composite antenna

In this project, a flexible thin film and environment friendly graphene-conductive polymer composite antenna was developed on a low cost plastic film for wearable application at 2.4 GHz. Nowadays, extreme research growths on graphene conductive polymer materials has been explored due to mechanical flexibility, high efficiency, low cost and electric field-controllable properties. These special properties made this material as a promising conductor for biomedical application and RF wireless application. Within this context, exploitation of ink-jet printing graphene together with conductive polymer, poly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) were developed in this project and printed on plastic film substrate with dielectric permittivity, εr of 2.3. In addition, parametric studies of the number of printing layer towards antenna resistivity performance are also performed. The final antenna printing produces conformability to the surfaces, ability of design versatility, and low manufacturing costs with compact size of 0.16λ0 × 0.42λ0 or 9.88cm2 and wide bandwidth of 84.17% which serve the requirements of wearable antenna application at 2.4GHz