Applications of negative-refractive-index transmission-line (NRI-TL) metamaterials in planar antennas and their feed networks
AuthorAntoniades, Marcos A.
Eleftheriades, G. V.
EditionIET Seminar Digest
SourceIET Seminar Digest
IET Seminar Digest
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Negative-refractive-index transmission-line (NRI-TL) metamaterials and introduced and their fundamental properties are described. Following this, various applications using NRI-TLs are shown and their salient characteristics are shown. First, a broadband microstrip balun is shown, then a broadband 1:4 power divider, followed by a series-fed linear dipole array that exhibits reduced beam squinting, then a leaky-wave antenna with reduced beam squinting is presented and finally an electrically small ring antenna is shown that exhibits vertical linear polarization.
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