Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2007.18.7.834

A Bandstop Filter with Improved Slope Characteristics Using C-DGS(Coupled-Defected Ground Structure)  

Jung, Sang-Woon (Department of Electronics Engineering, Ajou University)
Lim, Young-Kwang (Department of Electronics Engineering, Ajou University)
Lee, Hai-Young (Department of Electronics Engineering, Ajou University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.7, 2007 , pp. 834-838 More about this Journal
Abstract
A coupled-defected ground structure(C-DGS) having closely-located DGS cells is proposed for high performance bandstop filter applications. The negative coupling of ground currents between adjacent DGS cells greatly improves the stopband characteristics. We have measured the attenuation slope of 110.8 dB/GHz and -20 dB rejection band from 3.8 GHz to 15.5 GHz. Compared to the double-plane BSF, the proposed BSF improved the sharp cutoff response 7.6 times. We expect the C-DGS be helpful to improve the performance of DGS application circuits and also to extend the possible DGS applications.
Keywords
BSF; C-DGS; DGS; PBG;
Citations & Related Records
연도 인용수 순위
  • Reference
1 H. M. Kim, B. S. Lee, 'Bandgap and slow/fast-wave characteristics of defected ground structures(DGSs) including left-handed features', IEEE Trans. Microwave Theory and Tech., vol. 54, no. 7, pp. 3113-3120, Jul. 2006   DOI   ScienceOn
2 Y. S. Cha, B. G. Kang, Y. T. Kim, S. H. Kim, J. S. Park, and J. B. Lim, 'A new design method for performance improvement of high power amplifier by using the matching circuit of defected ground structure', Eur. Microwave Conf., vol. 3, pp. 1341-1344, Oct. 2003
3 Jin-Yang Kim, Hai-Young Lee, 'Wideband and compact bandstop filter structure using double-plane superposition', IEEE Microwave and Wireless Components Lett., vol. 13, no. 7, pp. 279-280, Jul. 2003   DOI   ScienceOn
4 D. M. Pozar, Microwave Engineering, Second Edition, John Wiley, pp. 206-213, 1998
5 T. Kim, C. Seo, 'A novel photonic bandgap struc ture for los-pass filter of wide stopband', IEEE Microwave Guided Wave Lett., vol. 10, no, 1, pp. 13-15, Jan. 2000   DOI   ScienceOn
6 I. S. Chang, B. S. Lee, 'Design of defected ground structures for harmonic control of active microstrip antenna', IEEE, AP-S Int. Symp., vol. 2, pp. 16-21, Jun. 2002
7 K. B. Kim, T. S. Yun, and J. C. Lee, 'A single balanced diode mixer with defected ground structure(DGS) lowpass filter(LPF)', Eur. Microwave Conf., vol. 1, pp. 197-200, Oct. 2004
8 Jong-sik Lim, Young-Taek Lee, Chul-Soo Kim, Dal Ahn, and Sang-wook Nam, 'A verically periodic defected ground structure and its application in reducing the size of microwave circuits', IEEE Trans. Microwave and Wireless Component Lett., vol. 12, no. 12, pp. 479-481, Dec. 2002   DOI   ScienceOn
9 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 Tran. Microwave Theory and Tech., vol. 49, no. 1, pp. 86-93, Jan. 2001   DOI   ScienceOn