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http://dx.doi.org/10.5515/KJKIEES.2011.22.9.912

CRLH Rectangular Waveguide with Balanced Condition above Cut-off Frequency  

Kim, Dong-Jin (Department of Electronic and Electrical Engineering, Hongik University)
Lee, Jeong-Hae (Department of Electronic and Electrical Engineering, Hongik University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.9, 2011 , pp. 912-918 More about this Journal
Abstract
In this paper, a composite right-/left-handed(CRLH) rectangular waveguide satisfying a balanced condition above the cut-off frequency is presented. The proposed structure consists of one shorted stub and two twisted H-plane irises which produce an effectively negative permeability and permittivity, respectively. The CRLH structure can independently control the series and shunt resonance frequencies of a CRLH transmission line which determine the left-handed(LH) and right-handed(RH) bands due to a minimized coupling between a shorted stub and twisted H-plane irises. Thus, the design of the CRLH waveguide satisfying a balanced condition is possible. To analyze the CRLH structure, a crossly connected equivalent circuit is derived. The simulated and measured results confirm that the proposed CRLH waveguide has a transmission property without a band gap among the LH and RH bands.
Keywords
Metamaterials; CRLH Rectangular Waveguide; Balanced Condition;
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