Microwave filter characteristics of ferrite and polyaniline composites from 8.2 to 12.4 GHz


In this work, M-type hexagonal ferrite Ba0.5Sr0.5CoxZrxFe(12−2x)O19 and Polyaniline composites have been prepared. The microwave filter characteristics were investigated from 8.2 to 12.4 GHz by measuring scattering parameter in the sample fitted waveguide. The dielectric loss tangent was dominating over magnetic loss tangent in all compositions. The doping of Co2+ and Zr4+ ions along with good electrical behavior of Polyaniline increased microwave attenuation. Composition x = 1.0 displayed maximum attenuation of − 26.94 dB at 12.4 GHz. Composition x = 0.8 and 1.0 owe good bandstop filter characteristic with narrow and wide attenuation bandwidth of 0.76 GHz and 4.20 GHz respectively. The results revealed that fabricated composites owe apt scope for bandstop filter application.

Publication Title

Journal of Materials Science: Materials in Electronics