volume | PIER Journals

Abstract

In this paper, a new calculating method for the characteristic impedance (Z_c) of transmission lines with perturbation and periodic modified ground structure (MGS), such as defected ground structure (DGS), photonic bandgap (PBG), and substrate integrated artificial dielectric (SIAD), is discussed. The proposed method is based on simple transmission line theories and proper related equations. The previous method to find Z_c of transmission lines with MGS or perturbation produces the fluctuating Z_c value depending on frequency, while the proposed method results in a constant value without frequency-dependence. As examples, several microstrip lines with DGS, PBG, and SIAD structure are simulated and measured, and their Z_c values are calculated from S-parameters by the previous and proposed methods. It is shown that the Z_c obtained by the proposed method is much more reliable than that calculated by the previous method for all examples.

1. Gupta, K. C., et al. Microstrip Lines and Slotlines, 2nd edition, Artech House, 1996.

2. Gupta, S. K. and K. J. Vinoy, "A compact defected ground microstrip device with photonic bandgap effects," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 2-3, 255-256, 2009.
doi:10.1163/156939309787604553 Google Scholar

3. Radisic, V., Y. Qian, R. Coccioli, and T. Itoh, "Novel 2-D photonic bandgap structure for microstrip lines," IEEE Microw. Guide Wave Lett., Vol. 8, No. 2, 69-71, Feb. 1998.
doi:10.1109/75.658644 Google Scholar

4. Yun, T. Y. and K. Chang, "Uniplanar one-dimensional photonic-bandgap structures and resonators," IEEE Trans. Microwave Theory Tech., Vol. 49, No. 3, 549-553, Mar. 2001.
doi:10.1109/22.910561 Google Scholar

5. Kim, C. S., J. S. Park, D. Ahn, and J. B. Lim, "A novel 1-D periodic defected ground structure for planar circuits," IEEE Microw. Guide Wave Lett., Vol. 10, No. 4, 131-133, Apr. 2000.
doi:10.1109/75.846922 Google Scholar

6. Coulombe, M., H. V. Nguyen, and C. Caloz, "Substrate integrated artificial dielectric (SIAD) structure for miniaturized microstrip circuits," IEEE. Ant. and Wir. Prop. Lett., Vol. 6, 575-579, Dec. 2007.
doi:10.1109/LAWP.2007.910959 Google Scholar

7. Chen, X.-Q., R. Li, S.-J. Shi, Q. Wang, L. Xu, and X.-W. Shi, "A novel low pass filter using elliptic shape defected ground structure," Progress In Electromagnetics Research B, Vol. 9, 117-126, 2008.
doi:10.2528/PIERB08071801 Google Scholar

8. Weng, L. H., Y.-C. Guo, X.-W. Shi, and X.-Q. Chen, "An overview on defected ground structure," Progress In Electromagnetics Research B, Vol. 7, 173-189, 2008.
doi:10.2528/PIERB08031401 Google Scholar

9. Mohra, A. S. S., "Compact lowpass filter with sharp transition band based on defected ground structures," Progress In Electromagnetics Research Letters, Vol. 8, 83-92, 2009.
doi:10.2528/PIERL09041406 Google Scholar

10. Lim, J. S., 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, 2539-2545, Aug. 2005.
doi:10.1109/TMTT.2005.852765 Google Scholar

11. Lim, J. S., S. W. Lee, C. S. Kim, J. S. Park, D. Ahn, and S. Nam, "A 4 : 1 unequal wilkinson power divider," IEEE Microw. Wireless Compon. Lett., Vol. 11, No. 3, 124-126, Mar. 2001.
doi:10.1109/7260.915624 Google Scholar

12. Lim, J. S., C. S. Kim, J. S. Park, D. Ahn, and S. Nam, "Design of 10 dB 90°branch line coupler using microstrip line with defected ground structure," IEE Electron. Lett., Vol. 36, No. 21, 1784-1785 , 2000.
doi:10.1049/el:20001238 Google Scholar

13. Shobeyri, M. and M. H. Vadjed-Samiei, "Compact ultra-wideband bandpass filter with defected ground structure," Progress In Electromagnetics Research Letters, Vol. 4, 25-31, 2008.
doi:10.2528/PIERL08050205 Google Scholar

14. Jeong, Y. C. and J. S. Lim, "A novel frequency doubler using feedforward technique and defected ground structure," IEEE Microw. Wireless Compon. Lett., Vol. 14, No. 12, 557-559, Dec. 2004.
doi:10.1109/LMWC.2004.837382 Google Scholar

15. Song, Q. Y., H. R. Cheng, X. H. Wang, L. Xu, X.-Q. Chen, and X.-W. Shi, "Novel wideband bandpass filter integrating HMSIW with DGS," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 14-15, 2031-2040, 2009.
doi:10.1163/156939309789932412 Google Scholar

16. Yang, F. R., Y. Qian, and T. Itoh, "A novel uniplanar compact PBG structure and mixer applications," IEEE MTT-S Digest, 919-922, Jun. 1999. Google Scholar

17. Radisic, V., Y. Qian, and T. Itoh, "Broad power amplifier using dielectric photonic bandgap structure," IEEE Microw. Guide Wave Lett., Vol. 8, No. 1, 13-14, Jan. 1998.
doi:10.1109/75.650973 Google Scholar

18. Oraizi, H. and M. S. Esfahlan, "Miniaturization of wilkinson power dividers by using defected ground structures," Progress In Electromagnetics Research Letters, Vol. 4, 113-120, 2008.
doi:10.2528/PIERL08060701 Google Scholar

19. Chang, C.-P., C.-C. Su, S.-H. Hung, Y.-H. Wang, and J.-H. Chen, "A 6 : 1 unequal wilkinson power divider with EBG CPW," Progress In Electromagnetics Research Letters, Vol. 8, 151-159, 2009.
doi:10.2528/PIERL09032801 Google Scholar

20. Lin, C.-M., C.-C. Su, S.-H. Hung, and Y.-H. Wang, "A compact balun based on microstrip EBG cell and interdigital capacitor," Progress In Electromagnetics Research Letters, Vol. 12, 111-118, 2009.
doi:10.2528/PIERL09092904 Google Scholar

21. Fan, F. and Z. Yan, "Dual stopbands ultra-wideband antenna with defected ground structure," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 7, 897-904, 2009.
doi:10.1163/156939309788355252 Google Scholar

22. Zainud-Deen, S. H., M. E. S. Badr, E. El-Deen, K. H. Awadalla, and H. A. Sharshar, "Microstrip antenna with defected ground plane structure as a sensor for landmines detection," Progress In Electromagnetics Research B, Vol. 4, 27-39, 2008.
doi:10.2528/PIERB08010203 Google Scholar

23. Hosseini, S. A., Z. Atlasbaf, and K. Forooraghi, "Two new loaded compact palnar ultra-wideband antennas using defected ground structures," Progress In Electromagnetics Research B, Vol. 2, 165-176, 2008.
doi:10.2528/PIERB07111802 Google Scholar

24. Biancotto, C. and P. Record, "Design of a beam forming dielectric cylindrical EBG antenna," Progress In Electromagnetics Research B, Vol. 18, 327-346, 2009.
doi:10.2528/PIERB09101506 Google Scholar

25. Banerjee, A., "Enhanced temperature sensing by using one-dimensional ternary photonic band Gap structures," Progress In Electromagnetics Research Letters, Vol. 11, 129-137, 2009.
doi:10.2528/PIERL09080101 Google Scholar

Dr. Jongsik Lim

Dr. Jun Lee

Dr. Jaehoon Lee

Prof. Sang-Min Han

Prof. Dal Ahn

Prof. Yongchae Jeong