Left Hand Mode Transmission Line Characteristics Made by F-SIR Structure on PCB

Ryosuke YANAGISAWA  Yoshiki KAYANO  Hiroshi INOUE  

IEICE TRANSACTIONS on Communications   Vol.E93-B   No.7   pp.1855-1857
Publication Date: 2010/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.1855
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Advanced Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'09/Kyoto)
left hand mode transmission line,  folded-stepped impedance resonator,  backward propagation,  negative group delay,  

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Basic left hand mode transmission line (LH mode TL) characteristics made on PCB is an important future issue for the application of the EMC field. In this paper, possibility of a LH mode TL characteristic made by a folded-stepped impedance resonator (F-SIR) type is investigated experimentally and numerically. The experimental and calculated from FEM and equivalent circuit results indicate that some backward propagation characteristic and negative group delay can be established by F-SIR structure.