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J Electromagn Eng Sci > Volume 15(1); 2015 > Article
Journal of Electromagnetic Engineering and Science 2015;15(1):31-36.
DOI: https://doi.org/10.5515/JKIEES.2015.15.1.31   
GA-Optimized Compact Broadband CRLH Band-Pass Filter Using Stub-Inserted Interdigital Coupled Lines
Jinsu Jeon, Sungtek Kahng, Hyunsoo Kim
Department of Information and Telecommunication Engineering, Incheon National University
The design of a new compact band-pass filter is proposed, which is based on the microstrip composite right- and left-handed transmission- line (CRLH-TL) structure. Particularly, the interdigital coupled (IDC) lines of the CRLH geometry are proposed to be parted by inserting open stubs to meet the specifications on the passband. In addition, there is another pair of stubs to complete the design in a limited space. These are considered in the TL-based analysis and the design parameters are calculated by genetic algorithm optimization. The measurement is shown to be acceptable and agreeable with the circuit and electromagnetic field simulations. In addition, the zerothorder resonance (ZOR) phenomenon is verified.
Key words: Broadband, CRLH-Metamaterial, Interdigital Coupled Lines, Optimization, Stub-Inserted


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