Browse > Article
http://dx.doi.org/10.5762/KAIS.2011.12.5.2298

Design of A Miniaturized Low Pass Filter Using Common Defected Ground Structure  

Lee, Jun (Department of Elec. and Comm. Eng, Soonchunhyang University)
Lee, Jae-Hoon (Department of Elec. and Comm. Eng, Soonchunhyang University)
Lim, Jong-Sik (Department of Elec. and Comm. Eng, Soonchunhyang University)
Ahn, Dal (Department of Elec. and Comm. Eng, Soonchunhyang University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.5, 2011 , pp. 2298-2304 More about this Journal
Abstract
This paper describes and presents the design of a miniaturized low pass filter (LPF) for microwave frequency region using a common defected ground structure (CDGS). In this study a half-sized LPF is obtained using CDGS, while the previous LPFs with the conventional DGS showed a mild size-reduction. The common DGS (CDGS) is realized on the common ground plane of two microstrip lines, i. e double-sided microstrip lines, which exist back-to-back to each other. In order to show the validity of the proposed design, an example of LPF using CDGS and double-sided microstrip lines is designed, fabricated and measured using the dielectric substrate with the dielectric constant of 2.2 and with the thickness of 31mils. The size of the designed LPF using CDGS is only 52.6% compared to that of the previous LPF with the conventional DGS. In addition, it is shown that the performances of the proposed LPF are well preserved after the size-reduction with the measured S11 and S21 of -22dB, min and -0.19dB, max, respectively.
Keywords
Low pass filter; LPF; Defected ground structure; DGS;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. S. Lim, H. S. Kim, J. S. Park, D. Ahn, and S. Nam, "A Power Amplifier with Efficiency Improved Using Defected Ground Structure," IEEE Microwave and Wireless Component Letters, vol. 11, no. 4, pp. 170-172, Apr. 2001.   DOI
2 J. S. Lim, S. W. Lee, C. S. Kim, J. S. Park, D. Ahn, and S. Nam, "A 4:1 Unequal Wilkinson Power Divider," IEEE Microwave and Wireless Components Letters, vol. 11, no. 3, pp. 124-126, Mar. 2001.   DOI
3 황문수, 임종식, 양규열, 안달, "무선통신시스템 송신측 제어를 위한 초소형 LTCC 전력검출부의 설계," 한국산학기술학회논문지 제 9권, 제 3호, pp. 621-627, 2008년 6월.   과학기술학회마을   DOI
4 V. Radisic, Y. Qian, R. Coccioli, and T. Itoh, "Novel 2-D Photonic Bandgap Structure for Microstrip Lines," IEEE Microwave Guide Wave Letters, vol. 8, no. 2, pp. 69-71, Feb. 1998.   DOI
5 J. S. Lim, C. S. Kim, J. S. Park, D. Ahn, and S. Nam, "Design of 10dB 90o branch line coupler using microstrip line with defected ground structure," IEE Electronics Letters, vol. 36, no. 21, pp. 1784-1785, Oct. 2000.   DOI
6 T. Y. Yun and K. Chang, "Uniplanar One-Dimensional Photonic-Bandgap Structures and Resonators," IEEE Trans. Microwave Theory Tech., vol. 49, no. 3, pp. 549-553, Mar. 2001.   DOI
7 J. S. Lim, C. S. Kim, Y. T. Lee, D. Ahn, and S. Nam, "Design of Low Pass Filters Using Defected Ground Structure and Compensated Microstrip Line," IEE Electronics Letters, vol. 38, no. 22, pp. 1357-1358, Oct. 2002.   DOI
8 D. Ahn, J. S. Park, C. S. Kim, J. Kim, Y. Qian, and T. Itoh, "A Design of the Low-Pass Filter Using the Novel Microstrip Defected Ground Structure," IEEE Trans. Microwave Theory Tech., vol. 49, no. 1, pp. 86-93, Jan. 2001.   DOI