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Compact one‐cell EBG (or PBG) microstrip matching line
Author(s) -
Nesic Dusan
Publication year - 2005
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.20635
Subject(s) - microstrip , ground plane , impedance matching , transformer , microwave , electrical impedance , photonic crystal , materials science , optoelectronics , metamaterial , electrical engineering , electronic engineering , acoustics , engineering , optics , physics , telecommunications , voltage , antenna (radio)
A new type of one‐cell slow‐wave electromagnetic bandgap (EBG) microstrip is introduced. It is an impedance transformer applied as a λ/4 matching line between two different impedances. Two cases are explained: (i) a simulated and realized T‐junction between three 50Ω lines and (ii) a simulated λ/4 transformer between 50Ω and 12.5Ω. These EBG structures are realized without etching in the ground plane. Reduction of the length of the proposed λ/4 line is 60% (or higher), compared to the conventional λ/4 matching line. For the realized example, the agreement obtained between the simulated and measured results is excellent. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 363–365, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20635