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http://dx.doi.org/10.12673/jant.2011.15.4.571

Common-Mode Suppression Balanced Filter based on Composite Right/Left-Handed Transmission Line  

Kim, Young (Department of Radio Communication Engineering, Kumoh National Institute of Technology)
Yun, Jeong-Ho (Department of Radio Communication Engineering, Kumoh National Institute of Technology)
Yoon, Young-Chul (Department of Electronics & Information Communication Eng., Kwandong University)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.4, 2011 , pp. 571-577 More about this Journal
Abstract
This paper presents a novel balanced filter design based on a metamaterial structure applicable to differential-mode excitation. The metamaterial structure is based on a unit-cell which under a differential-mode excitation behaves like composite right/left-handed(CRLH) metamaterial with filter characteristics. In contrast, the metamaterial unit-cell is below cut-off under a common-mode excitation. Experimental results are used to verify the proposed metamaterial's differential-mode characteristics. The metamaterial is fabricated with a balanced filter design resulting in an operating frequency range of 960~1000 MHz with a insertion loss of 4.1 dB.
Keywords
Balanced Filter; Composite Right/Left-Handed Transmission Line; Differential-mode; Metamaterial; Common-mode suppression;
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