DocumentCode :
1402653
Title :
Investigation of Leaky-Wave Propagation and Radiation in a Metal Cut-Wire Array
Author :
Yang Li ; Alu, Andrea ; Hao Ling
Author_Institution :
Electr. & Comput. Eng. Dept., Baylor Univ., Waco, TX, USA
Volume :
60
Issue :
3
fYear :
2012
fDate :
3/1/2012 12:00:00 AM
Firstpage :
1630
Lastpage :
1634
Abstract :
The leaky-wave propagation and radiation characteristics of a metal cut-wire array are studied. It is shown that a leaky-wave can exist in the structure at frequencies above the plasmonic cut-off. The field distribution, propagation and attenuation constants of the leaky-wave are extracted from simulation and measurement, and compared with the predictions based on a rigorous homogenization model. Next, directive radiation into the air region through the leaky-wave mechanism is explored. It is found that a directive, frequency scanned beam can be formed outside the cut-wire array. The phenomenon is demonstrated through theory, simulations and measurements.
Keywords :
antenna arrays; antenna radiation patterns; electromagnetic wave propagation; metamaterials; air region; directive radiation; frequency scanned beam; leaky-wave propagation; metal cut-wire array; plasmonic cut-off; radiation characteristics; Antenna measurements; Antenna radiation patterns; Arrays; Directive antennas; Gain; Metals; Cut-wire array; directive radiation; leaky-wave;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2180352
Filename :
6108346
Link To Document :
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