NDLI: Degenerate Band Edge Crystals and Periodic Assemblies for High Gain Antennas

Content Provider	IEEE Xplore Digital Library
Author	Yarga, S. Sertel, K. Volakis, J.L.
Copyright Year	2006
Description	Author affiliation: ElectroScience Lab., Electrical & Computer Eng. Dept., The Ohio State University, 1320 Kinnear Rd. Columbus, OH 43212 (Yarga, S.)
Abstract	Periodic arrangements of metallo-dielectric structures have been shown to exhibit novel phenomena that can be exploited for microwaves. Among them, regular band edge (RBE) structures are known for their high Q properties, and left handed materials lead to much smaller phase shifters and couplers. More recently, a new class of periodic arrangements, referred to as magnetic photonic crystals (MPCs) and degenerate band edge crystals (DBEs) have been shown to significantly improve matching of the incoming fields and support slow wave phenomena (frozen modes) leading to very large wave fields within the crystal over a relatively wide bandwidth. Thus, they can be used for much greater sensitivity antennas. In this paper, we experimentally demonstrate for the first time the support of such phenomena using a newly designed crystal from very low cost materials. We demonstrate that the purported slow wave and high amplitude phenomena can be observed using on periodic cells with a finite aperture. These experiments are corroborated with numerical data, making the utilization of these new class crystals for high gain and narrow beam scanning antennas a practical possibility.
Sponsorship	Motorola Air Force Office of Sci. Res. ANSOFT
Starting Page	7
Ending Page	10
File Size	857026
Page Count	4
File Format	PDF
ISBN	1424401232
DOI	10.1109/APS.2006.1710438
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Assembly Photonic crystals Periodic structures Metamaterials Phase shifters Couplers Magnetic materials Bandwidth Costs Crystalline materials
Content Type	Text
Resource Type	Article

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