Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 8, Issue -, Pages 92-95Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2008.2011570
Keywords
Antenna; electrically small; magnetic loop; metamaterial
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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.
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