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Design of compact and wideband metamaterial balun based on closed‐form solutions
Author(s) -
Jung YounKwon,
Lee Bomson
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25117
Subject(s) - balun , wideband , microwave , metamaterial , bandwidth (computing) , electrical engineering , fractional bandwidth , electronic engineering , physics , engineering , optoelectronics , materials science , telecommunications , antenna (radio) , band pass filter
This letter presents a very compact (17.5 mm × 24.2 mm or 0.18 λ 0 × 0.24 λ 0 ) and wideband balun at 3 GHz designed using the derived closed‐form solutions. The EM‐simulated difference of the transmitted signals at two ports is less than 0.6 dB from 2.45 to 6 GHz (118% at 3 GHz). Based on 180° ± 10° phase difference, the measured bandwidth of the proposed balun is 3.84 GHz from 2.16 to 6 GHz (or 128% at 3 GHz). © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1153–1156, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25117