Fabrication of millimeter-wave electromagnetic bandgap crystals using microwave dielectric powders
Fabrication of millimeter-wave electromagnetic bandgap crystals using microwave dielectric powders
Electromagnetic bandgap (EBG) structures active in the 90–110 GHz region widely used by security imaging radar were created using different ceramics by a rapid prototyping method informed by finite difference time domain modeling. This solid free-forming method uses a high volatility solvent-based ceramic paste extruded through fine nozzles allowing ceramic powders to be assembled on a multiaxis building platform avoiding machining, etching, or the alignment of loose rods and created to designs downloaded directly from a computer file. Lattices were made from two high dielectric constant ceramics: La(Mg0.5, Ti0.5)O3 and (Zr0.8, Sn0.2)TiO4 and compared with those of Al2O3 demonstrating three EBG structures with different dimensions and dielectric constants but with the same bandgap. The effects of manufacturing tolerances on bandgap frequency are investigated by simulation
371-378
Lu, Xuesong
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Lee, Yoonjae
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Yang, Shoufeng
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Hao, Yang
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Ubic, Rick
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Evans, Julian R. G.
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Parini, Clive G.
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February 2009
Lu, Xuesong
e3eb4386-7dc9-417e-bd5c-bbdec78f7ec5
Lee, Yoonjae
07298a68-0ff0-4a07-a4de-c4f5a6e0cd64
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Hao, Yang
8450eaa4-843c-4b86-b951-b413942d4453
Ubic, Rick
c7b04bfa-5570-4edb-8aab-03988aac10cf
Evans, Julian R. G.
1e4ff64d-fdc6-460e-ae9f-f41746899f57
Parini, Clive G.
9c0d66e3-70c9-4cb9-bbb3-34bee8e0e420
Lu, Xuesong, Lee, Yoonjae, Yang, Shoufeng, Hao, Yang, Ubic, Rick, Evans, Julian R. G. and Parini, Clive G.
(2009)
Fabrication of millimeter-wave electromagnetic bandgap crystals using microwave dielectric powders.
Journal of the American Ceramic Society, 92 (2), .
(doi:10.1111/j.1551-2916.2008.02907.x).
Abstract
Electromagnetic bandgap (EBG) structures active in the 90–110 GHz region widely used by security imaging radar were created using different ceramics by a rapid prototyping method informed by finite difference time domain modeling. This solid free-forming method uses a high volatility solvent-based ceramic paste extruded through fine nozzles allowing ceramic powders to be assembled on a multiaxis building platform avoiding machining, etching, or the alignment of loose rods and created to designs downloaded directly from a computer file. Lattices were made from two high dielectric constant ceramics: La(Mg0.5, Ti0.5)O3 and (Zr0.8, Sn0.2)TiO4 and compared with those of Al2O3 demonstrating three EBG structures with different dimensions and dielectric constants but with the same bandgap. The effects of manufacturing tolerances on bandgap frequency are investigated by simulation
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Published date: February 2009
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 165009
URI: http://eprints.soton.ac.uk/id/eprint/165009
ISSN: 0002-7820
PURE UUID: 2cb3d63f-c352-4fed-ad91-08700514d933
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Date deposited: 07 Oct 2010 14:22
Last modified: 14 Mar 2024 02:09
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Contributors
Author:
Xuesong Lu
Author:
Yoonjae Lee
Author:
Yang Hao
Author:
Rick Ubic
Author:
Julian R. G. Evans
Author:
Clive G. Parini
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