Browse > Article

A Study for the Equivalent Circuit and Slow-Wave Factor of Defected Ground Structure Transmission Line  

Lim, Jong-Sik (순천향대학교 전기통신공학과)
Koo, Ja-Kyung (순천향대학교 전기통신공학과)
Han, Sang-Min (순천향대학교)
Jeong, Yong-Chae (전북대학교 전자정보공학부)
Ahn, Dal (순천향대학교 전기통신공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.11, 2008 , pp. 2041-2046 More about this Journal
Abstract
A frequency-dependent slow-wave factor (SWF) and equivalent circuit model of transmission line with defected ground structures (DGS) is described. Once S-parameters of a DGS transmission line are given, the conventional frequency -independent equivalent circuit elements are extracted using 3dB cutoff and resonant frequencies (Fc and Fo) as the first step. Using the initial equivalent elements and simple transmission line theories, a frequency-dependent equivalent transmission line model is established through an analytical method, and finally the frequency dependent SWF is calculated. The proposed equivalent circuit model and SWF are frequency-dependent and more reliable because even small insertion loss within available passband is considered, while they have been independent of frequency.
Keywords
DGS; Defected ground structure; Slow-wave factor;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 J. S. Lim, C. S. Kim, D. Ahn, Y. C. Jeong, and S. Nam, 'Design of Low-Pass Filters Using Defected Ground Structure', IEEE Trans. Microwave Theory Tech., vol. 53, no. 8, pp. 2539-2545, Aug 2005   DOI   ScienceOn
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   ScienceOn
3 Y. Zhang and H. Y. D. Yang, 'Ultra Slow-Wave Periodic Transmission Line Using 3D Substrate Metalization,', 2008 International Microwave Symposium Digest, pp. 89-894, Jun. 2008
4 S. G. Mao and M. Y. Chen, 'Propagation Characteristics of Finite- Width Conductor-Backed Coplanar Waveguides With Periodic Electromagnetic Bandgap Cells,' IEEE Trans. Microwave Theory Tech., vol. 50, no. 1, pp. 2624-2628, Nov. 2002   DOI   ScienceOn
5 J. S. Lim, J. S. Park, Y. T Lee, D. Ahn, and S. Nam, 'Application of Defected Ground Structure in Reducing the Size of Amplifiers,' IEEE Microwave and Wireless Components Letters, vol. 12, no. 7, pp 261-263, Jul 2002   DOI   ScienceOn
6 G. H. Li, X. H. Jiang, and X. M. Zhong, 'A Novel Defected Ground Structure and Its Application to a Lowpass Filter,' Microwave and Optical Technology Letters, vol. 48, no. 9, pp. 1760-1763, Sep. 2002   DOI   ScienceOn
7 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   ScienceOn
8 C. S. Kim, J. S. Park, D. Ahn, and J. B. Lim, 'A Novel 1-D Periodic Defected Ground Structure for Planar Circuits.' IEEE Microwave Guide Wave Letters, vol. 10, no. 4, pp. 131-133. Apr. 2000   DOI   ScienceOn
9 J. S. Lim, C. S. Kim, Y. T. Lee, D. Ahn, and S. Nam, 'A Spiral-Shaped Defected Ground Structure for Coplanar Waveguide,' IEEE Microwave and Wireless Components Letters, vol. 12, no. 9, pp 330-332, Sep. 2002   DOI   ScienceOn
10 Y. T. Lee, J. S. Lim, J. S. Park, D. Ahn, and S. Nam, 'A Novel Phase Noise Reduction Technique in Oscillators Using Defected Ground Structure,' IEEE Microwave and Wireless Components Letters, vol. 12, no. 2, pp. 39-41, Feb. 2002   DOI   ScienceOn
11 D Ahn, J. S. Park, C. S. Kim, J. Kim, Y. Qian, and T. Ioh, '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   ScienceOn
12 F. R. Yang, K. P. Ma, Y. Qian, and T. Itoh, 'A Uniplanar Compact Photonic-Bandgap (UC-PBG) Structure and its Applications for Microwave Circuits,' IEEE Trans. Microwave Theory Tech, vol. 47, no. 8, pp. 1509-1514, Aug. 1999   DOI   ScienceOn