Beschreibung
Microwave absorption of Pb-Ca-Nb multiferroics & Ca-Co-Ti hexaferrites is measured using Absorber Testing Device Method and evaluated using Quarter Wavelength Criterion (QWC) which finds closeness between theoretical and measured thickness of composition.In Pb-Ca-Nb multiferroics, composition x=0.0 exhibits maximum reflected power of 99.01 % at 11.55 GHz and has a potential of electromagnetic shielding. Composition x=0.6 has maximum absorbed power of 96.01 % at 11.78 GHz with potential for microwave absorption or reducing electromagnetic interference. Compositions x=0.40, x=0.45 and 0.55 satisfy QWC. In Ca-Co-Ti hexaferrites, x=0.1 has maximum reflected power of 99.70 % at 8.60 GHz and has a potential of electromagnetic shielding. The composition x=0.6 has maximum absorbed power of 97.61 % at 11.9 GHz rendering for microwave absorption or reducing electromagnetic interference. The composition x=0.5 has maximum transmitted power of 99.95 % at 10.24 GHz and owes lossless transmission. The composition x=0.3, 0.6 and 0.7 satisfy QWC. There was no phase and frequency change in the output microwave signal as observed on cathode ray oscilloscope (CRO) after passing through compositions.
Autorenporträt
Dr. Charanjeet Singh is a professor and Head (Electronics Engg.)at Rayat Bahra Engg. College Hoshiarpur Punjab India, Research Area- Microwave ferrite absorbers;Recipient of Young Scientist Award(URSI,Japan);Pub. & Reviewer- Springer, Elsevier, Wiley;Member Editorial Board- Hindawi Indian J. Mat. Sci. USA;Travel Grant- DST, AICTE & INSA;h-Index:6
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