DocumentCode
1047546
Title
Demonstration of Impedance Matching Using a mu-Negative (MNG) Metamaterial
Author
Greegor, Robert B. ; Parazzoli, Claudio G. ; Nielsen, Jean A. ; Tanielian, Minas H. ; Vier, D.C. ; Schultz, S. ; Holloway, Christopher L. ; Ziolkowski, Richard W.
Author_Institution
Boeing Phantom Works, Seattle, WA
Volume
8
fYear
2009
fDate
7/1/1905 12:00:00 AM
Firstpage
92
Lastpage
95
Abstract
A mu-negative (MNG) metamaterial hemisphere was used to demonstrate impedance matching for a magnetic loop. The metamaterial was comprised of copper spirals deposited on an alumina substrate. The spirals, hemisphere, and magnetic loop were designed to operate at ~450 MHz. The effect of the metamaterial hemisphere was to improve the match of the electrically small loop antenna to the power source impedance increasing the overall radiated power. Results show a 17-dB increase in total radiated power relative to the bare loop. This was lower than anticipated due to losses in the MNG hemisphere.
Keywords
UHF antennas; impedance matching; metamaterials; alumina substrate; copper spirals; impedance matching; magnetic loop; metamaterial hemisphere; mu-negative metamaterial; power source impedance; Antenna; electrically small; magnetic loop; metamaterial;
fLanguage
English
Journal_Title
Antennas and Wireless Propagation Letters, IEEE
Publisher
ieee
ISSN
1536-1225
Type
jour
DOI
10.1109/LAWP.2008.2011570
Filename
4729607
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