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

• Published in: Journal of materials science. Materials in electronics 2019-08, Vol.30 (16), p.14923-14927
• Main Authors: Singh, Charanjeet, Bai, Yang, Narang, Sukhleen Bindra, Sombra, A. S. B., Mishra, Sanjay R., Jotania, Rajshree, Khanna, Rajesh, Trukhanov, S. V., Trukhanov, A. V., Ghimire, Madhav
• Format: Article
• Language: English
• Subjects: Bandstop filters; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cobalt; Communication; Composite materials; Composition; Crystal structure; Dielectric loss; Dielectric properties; Ferrites; Materials Science; Microwave attenuation; Microwave filters; Optical and Electronic Materials; Physics; Polyanilines; Sintering
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-019-01864-2

In this work, M-type hexagonal ferrite Ba 0.5 Sr 0.5 Co x Zr x Fe (12−2x) O 19 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 Co 2+ and Zr 4+ 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.