Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2007.18.12.1402

Design of the Miniaturized UWB BandPass Filter Using the 1 Unit of CRLH-TL  

Ju, Jeong-Ho (Dept. of Information & Telecommunication Engineering, University of Incheon)
Kahng, Sung-Tek (Dept. of Information & Telecommunication Engineering, University of Incheon)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.12, 2007 , pp. 1402-1407 More about this Journal
Abstract
This paper presents a new design method of the Ultra-Wide-Band BandPass Filter using the CRLH-TL(Composite Right- and Left-Handed Transmission-line) having the Metamaterials' properties. Instead of the periodic type or many cells of the CRLH-TL, only the unit cell is used to miniaturize the target component, which can not be realized by the conventional quarter guided-wavelength resonator-based filters. Particularly, the strong coupling essential to the Ultra Wide Band is enabled by the interdigital coupled lines between the grounded stubs. The proposed design scheme is validated by the electromagnetic simulation and measurement of the fabricated filter which shows the total size of 'the guided-wavelength/9.4', the 100 % fractional bandwidth for the UWB, the insertion loss of less than 1 dB and the flat group-delay.
Keywords
CRLH-TL; UltraWideBand; Bandpass Filter; Microstrip Coupled Lines; Group-Delay;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C. -L. Hsu, F. -C. Hsu, and J. -T. Kuo, 'Microstrip bandpass filters for ultra-wideband(UWB) wireless communications', in IEEE MTT-S Intl. Dig., pp. 675-678, Jun. 2005
2 H. Wang, L. Zhu, and W. Menzel, 'Ultra-wideband bandpass filter with hybrid microstrip/CPW structure', IEEE Microwave And Wireless Components Letters, vol. 15, pp. 844-846, Dec. 2005   DOI   ScienceOn
3 주정호, 강승택, 'E-결합 인버터를 가지는 메타재질구조와 스터브를 이용한 초소형 UHF 대역 대역 통과 여파기', 특허청출원 번호: 10-2007-0098085
4 강승택, 주정호, '초소형 메타재질구조와 스터브 를 이용한 통과 특성과 차단대역이 향상된 초광대역 대역 통과 여파기', 특허청 출원 번호: 10- 2007-0097825
5 C. Caloz, T. Itoh, Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications, Wiley-Interscience, John-Wiley & Sons Inc., Hoboken, NJ 2006
6 S. Sun, L. Zhu, 'Capacitive-ended interdigital coupled lines for UWB bandpass filters with improved out-of-band performances', IEEE Microwave and Wireless Components Letters, vol. 16, pp. 440-442, Aug. 2006   DOI   ScienceOn
7 H. Ishida, K. Araki, 'Design and an alysis of uwb bandpass filter with ring filter', in IEEE MTT-S Intl. Dig., pp. 1307-1310, Jun. 2004
8 K. C. Gupta, R. Garg, I. Bahl, and P. Bhartia, Microstrip Lines and Slotlines, Artech House Inc., Norwood, MA 1996
9 W. Menzel, M. S. R. Tito, and L. Zhu, 'Low-Loss Ultra-Wideband(UWB) filters using suspended stripline', in Proc. Asia-Pacific Microw. Conf., vol. 4, pp. 2148-2151, Dec. 2005