Wideband microwave absorber design using micro and nanomaterials

Jose K. Abraham; T. C. Shami; Alok K. Dixit; Rama Dubey; Abhinandan Jain; Vijay K. Varadan; K. U. Bhasker Rao

doi:10.1117/12.735860

30 April 2007 Wideband microwave absorber design using micro and nanomaterials

Jose K. Abraham, T. C. Shami, Alok K. Dixit, Rama Dubey, Abhinandan Jain, Vijay K. Varadan, K. U. Bhasker Rao

Proceedings Volume 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007; 65281O (2007) https://doi.org/10.1117/12.735860
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

In this paper, we present the design and experimental results of wide-band composite microwave absorber fabricated using thermoplastic polyurethane, carbon fibers, glass microballoons, micro and nano size magnetic materials. Ni-Zn ferrite and carbonyl iron powders of nano and micrometer size particles were used along with carbon fibers and microbaloons for the development of the absorber. It is found that both Ni-Zn ferrite and carbonyl iron powders and their ratio in the composite plays critical role in the absorber performance. Measured results show that a reflectivity reduction of 15 dB from 5 to 18 GHz is possible using this composite absorber.

Citation Download Citation

Jose K. Abraham, T. C. Shami, Alok K. Dixit, Rama Dubey, Abhinandan Jain, Vijay K. Varadan, and K. U. Bhasker Rao "Wideband microwave absorber design using micro and nanomaterials", Proc. SPIE 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007, 65281O (30 April 2007); https://doi.org/10.1117/12.735860

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