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International Journal of Antennas and Propagation
Volume 2013, Article ID 232317, 5 pages
http://dx.doi.org/10.1155/2013/232317
Research Article

A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers

1Soonchunhyang University, Asan, Chungnam 336-745, Republic of Korea
2Chonbuk National University, Jeonju, Chonbuk 561-756, Republic of Korea
3East China of Jiaotong University, Nanchang 330013, China

Received 26 March 2013; Revised 11 June 2013; Accepted 23 June 2013

Academic Editor: Sha Luo

Copyright © 2013 Jongsik Lim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. V. Radisic, Y. Qian, R. Coccioli, and T. Itoh, “Novel 2-D photonic bandgap structure for microstrip lines,” IEEE Microwave and Guided Wave Letters, vol. 8, no. 2, pp. 69–71, 1998. View at Publisher · View at Google Scholar · View at Scopus
  2. 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 and Wireless Components Letters, vol. 10, no. 4, pp. 131–133, 2000. View at Google Scholar · View at Scopus
  3. 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 Transactions on Microwave Theory and Techniques, vol. 49, no. 1, pp. 86–93, 2001. View at Publisher · View at Google Scholar · View at Scopus
  4. 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, 2002. View at Publisher · View at Google Scholar · View at Scopus
  5. 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, 2001. View at Publisher · View at Google Scholar · View at Scopus
  6. J.-S. Lim, G.-Y. Lee, Y.-C. Jeong, D. Ahn, and K.-S. Choi, “A 1:6 unequal wilkinson power divider,” in Proceedings of the 36th European Microwave Conference (EuMC '06), pp. 200–203, September 2006. View at Publisher · View at Google Scholar · View at Scopus
  7. J.-S. Lim, 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,” Electronics Letters, vol. 36, no. 21, pp. 1784–1785, 2000. View at Publisher · View at Google Scholar · View at Scopus
  8. K. C. Gupta, Microstrip Lines and Slotlines, Artech House, Norwood, Mass, USA, 1996.