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Design of Ultra Wide Bandpass Filter by Metamaterial for KSTAR Reflectometry  

Lee, Chong-Min (Information and Telecommunication Engineering, Soongsil University)
Sim, Woo-Seok (Information and Telecommunication Engineering, Soongsil University)
Seo, Chul-Hun (Information and Telecommunication Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.1, 2012 , pp. 73-77 More about this Journal
Abstract
In this article, we designed a wide bandpass filter in order to apply microwave reflectometry for KSTAR. The proposed wide bandpass filter consists of a metamaterial structure which is to get a wide band, a lower insertion loss, and a high skirt. This is applied to VCO's output to enhance the linearity. A pass band is 18-28 GHz and the out of pass band is stopped over 20 dB. To confirm of the metamaterial, we suggest a dispersion diagram. The proposed filter in lower band and upper band of pass band is respectively a left handed and right handed characteristics. A group delay is below 0.5 ns.
Keywords
Ultra wide band; band pass filter; metamaterial; dispersion diagram; group delay;
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