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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/2704

Title: Enhancement of Microwave Properties of Planar Filters and Antennas using Photonic Bandgap (PBG) Structures
Authors: Sreedevi, Menon K
Mohanan, P
Keywords: Planar Filters
Planar Antenna
Photonic Bandgap(PBG)
Microwave Electronics
Issue Date: Oct-2006
Publisher: Cochin University of Science and Technology
Abstract: In this thesis, we explore the design, computation, and experimental analysis of photonic crystals, with a special emphasis on structures and devices that make a connection with practically realizable systems. First, we analyze the propenies of photonic-crystal: periodic dielectric structures that have a band gap for propagation. The band gap of periodically loaded air column on a dielectric substrate is computed using Eigen solvers in a plane wave basis. Then this idea is extended to planar filters and antennas at microwave regime. The main objectives covered in this thesis are:• Computation of Band Gap origin in Photonic crystal with the abet of Maxwell's equation and Bloch-Floquet's theorem • Extension of Band Gap to Planar structures at microwave regime • Predict the dielectric constant - synthesized dieletric cmstant of the substrates when loaded with Photonic Band Gap (PBG) structures in a microstrip transmission line • Identify the resonant characteristic of the PBG cell and extract the equivalent circuit based on PBG cell and substrate parameters for microstrip transmission line • Miniaturize PBG as Defected Ground Structures (DGS) and use the property to be implemented in planar filters with microstrip transmission line • Extended the band stop effect of PBG / DGS to coplanar waveguide and asymmetric coplanar waveguide. • Formulate design equations for the PBG / DGS filters • Use these PBG / DGS ground plane as ground plane of microstrip antennas • Analysis of filters and antennas using FDID method
Description: Department of Electronics, Cochin University of Science and Technology
URI: http://dyuthi.cusat.ac.in/purl/2704
Appears in Collections:Faculty of Technology

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