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Design of the UWB BandPass Filter of Microstrip CRLH-TL Metamaterial Cell Type with Improved Rejection Performance  

Kahng, Sung-Tek (Dept. of Information & Telecommunication Engineering, University of Incheon)
Ju, Jeong-Ho (Electronics and Telecommunications Research Institute)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.45, no.8, 2008 , pp. 47-52 More about this Journal
Abstract
In order to enhance the rejection performance of the UWB bandpass filter based on the Composite Right- and Left-Handed Transmission-line(CRLH-TL) Metamaterial cell, we propose the lowpass filtering concept that fits into the design objectives : Keeping metamaterial property and miniaturization. So the bandpass filter itself is made far less than a quarter-wavelength and a pair of symmetric comprises lowpass filtering blocks are placed before and after the center CRLH filter which comprises tile interdigitated coupled lines and short-circuited stob. The design result will show the size of 'guided wavelength/8', the fractional bandwidth over 100%, the insertion loss much less than 1 dB, a flat Group-Delay and a good return loss performance, as expected.
Keywords
Metamaterial; Miniaturization; UWB Bandpass filter; Lowpass filter; Improved Rejection;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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