Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 17, Issue 6, Pages 415-417Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2007.897786
Keywords
backward waves; dual band filters; left-handed media; metamaterials; negative refraction; quad-band lines
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A generalized negative-refractive-index transmission-line (NRI-TL) metamaterial is proposed with two left-handed (backward) and two right-handed (forward) passbands. A condition for closing the corresponding two stopbands between these alternating left-handed and right-handed bands is derived. Moreover, possible applications are identified, including quad-band microwave passive components (e.g., couplers, dividers) and dual-band or quad-band filters. The proposed topology is physically realizable using embedded passives in a host TL (e.g., mtcrostrip).
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