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Proceedings Paper

Photonic bandgap crystals on magneto-dielectric substrate for microwave frequency applications
Author(s): Manoj K. Tiwari; K. K. Gupta; H. C. Gupta; D. C. Dube
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Paper Abstract

The variation of magnetic permeability of substrate on Photonic Band Gap (PBG) has been studied for microstrip type periodic metallic structure and the experimental findings will be presented and discussed. Periodic structure was carved out in the metallic foil of 18 micron thickness and was put on the composite of magnetic and dielectric substrate. As the dielectric constant of the substrate affects the band gap for the photons in the microwave region, the combined effect of magneto-dielectric substrate have been studied here for different combination of ferrite materials with different composition and different sintering temperature. The substrate of Ni-Zn ferrite was prepared on the Perspex sheet of desired dimensions. The behavior of variation of band gap was also been studied for the air as dielectric material of the substrate. We found a well defined PBG and the band gap increases and transmission loss decreases in the microwave region with appropriate combination of magnetic and dielectric substrate. Thus it could be concluded that the dielectric constant viz. a viz. magnetic permeability plays an important role in the formation of broad band photonic materials for the microwave applications such as filters, antennas, frequency selective surfaces etc. Further work is going on to fabricate the patch antenna on the PBG embedded ground plane.

Paper Details

Date Published: 20 April 2006
PDF: 8 pages
Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 618227 (20 April 2006); doi: 10.1117/12.664058
Show Author Affiliations
Manoj K. Tiwari, Univ. of Delhi (India)
K. K. Gupta, Univ. of Delhi (India)
H. C. Gupta, Indian Institute of Technology, New Delhi (India)
D. C. Dube, Indian Institute of Technology, New Delhi (India)

Published in SPIE Proceedings Vol. 6182:
Photonic Crystal Materials and Devices III (i.e. V)
Richard M. De La Rue; Pierre Viktorovitch; Ceferino Lopez; Michele Midrio, Editor(s)

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