International Journal of Antennas and Propagation

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Linked References

1. S. John, “Strong localization of photons in certain disordered dielectric superlattices,” Physical Review Letters, vol. 58, no. 23, pp. 2486–2489, 1987. View at Publisher · View at Google Scholar · View at Scopus
2. E. Yablonovitch, “Inhibited spontaneous emission in solid-state physics and electronics,” Physical Review Letters, vol. 58, no. 20, pp. 2059–2062, 1987. View at Publisher · View at Google Scholar · View at Scopus
3. O. Daeyoung and P. Ikmo, “Two-arm microstrip spiral antenna with a circular aperture on the ground plane for generating a circularly polarized conical beam,” in Proceedings of the IEEE Antennas and Propagation Society International Symposium, vol. 3, pp. 866–869, June 2003.
4. M. C. Velazquez-Ahumada, J. Martel, and F. Medina, “Parallel coupled microstrip filters with ground-plane aperture for spurious band suppression and enhanced coupling,” IEEE Transactions on Microwave Theory and Techniques, vol. 52, no. 3, pp. 1082–1086, 2004. View at Publisher · View at Google Scholar · View at Scopus
5. R. Sharma, T. Chakravarty, S. Bhooshan, and A. B. Bhattacharyya, “Characteristic impedance of a microstrip-like interconnect line in presence of ground plane aperture,” International Journal of Microwave Science and Technology, vol. 2007, Article ID 41951, 5 pages, 2007. View at Publisher · View at Google Scholar
6. J.-I. Park, C.-S. Kim, J. Kim et al., “Modeling of a photonic bandgap and its application for the low-pass filter design,” in Proceedings of the Asia Pacific Microwave Conference (APMC '99), vol. 2, pp. 331–334, November-December 1999.
7. F. Yang and Y. R. Samii, Electromagnetic Band Gap Structures in Antenna Engineering, Cambridge University Press, Cambridge, UK, 2008.
8. D. Guha, S. Biswas, and Y. M. M. Antar, Defected Ground Structure for Microstrip Antennas, in Microstrip and Printed Antennas: New Trends, Techniques and Applications, John Wiley & Sons, London, UK, 2011.
9. R. Garg, I. Bahl, and M. Bozzi, Artech House, Artech House, Norwood, Mass, USA, 3rd edition, 2013.
10. J. G. Webster, Ed., Wiley Encyclopedia of Electrical and Electronics Engineering, John Wiley & Sons, Hoboken, NJ, USA, 2001, 2013 (Online update).
11. K. Fujimoto and H. Morishita, Modern Small Antennas, chapter 8, Cambridge University Press, 2013. View at Publisher · View at Google Scholar
12. 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
13. H. W. Liu, Z. F. Li, and X. W. Sun, “A novel fractal defected ground structure and its application to the low-pass filter,” Microwave and Optical Technology Letters, vol. 39, no. 6, pp. 453–456, 2003. View at Publisher · View at Google Scholar · View at Scopus
14. D.-J. Woo, T.-K. Lee, J.-W. Lee, C.-S. Pyo, and W.-K. Choi, “Novel U-slot and V-slot DGSs for bandstop filter with improved Q factor,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, no. 6, pp. 2840–2847, 2006. View at Publisher · View at Google Scholar · View at Scopus
15. H.-J. Chen, T.-H. Huang, C.-S. Chang et al., “A novel cross-shape DGS applied to design ultra-wide stopband low-pass filters,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 5, pp. 252–254, 2006. View at Publisher · View at Google Scholar · View at Scopus
16. D. Piscarreta and S.-W. Ting, “Microstrip parallel coupled-line bandpass filter with selectivity improvement using U-shaped defected ground structure,” Microwave and Optical Technology Letters, vol. 50, no. 4, pp. 911–915, 2008. View at Publisher · View at Google Scholar · View at Scopus
17. A. M. E. Safwat, F. Podevin, P. Ferrari, and A. Vilcot, “Tunable bandstop defected ground structure resonator using reconfigurable dumbbell-shaped coplanar waveguide,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, no. 9, pp. 3559–3564, 2006. View at Publisher · View at Google Scholar · View at Scopus
18. S. Dwari and S. Sanyal, “Compact sharp cutoff wide stopband low-pass filter using defected ground structure and spurline,” Microwave and Optical Technology Letters, vol. 48, no. 9, pp. 1871–1873, 2006. View at Publisher · View at Google Scholar · View at Scopus
19. S. Dwari and S. Sanyal, “Compact wide stopband low-pass filter using rectangular patch compact microstrip resonant cell and defected ground structure,” Microwave and Optical Technology Letters, vol. 49, no. 4, pp. 798–800, 2007. View at Publisher · View at Google Scholar · View at Scopus
20. S. Dwari and S. Sanyal, “Compact sharp cutoff wide stopband microstrip low-pass filter using complementary split ring resonator,” Microwave and Optical Technology Letters, vol. 49, no. 11, pp. 2865–2867, 2007. View at Publisher · View at Google Scholar · View at Scopus
21. Y.-C. Jeong, S.-G. Jeong, J.-S. Lim, and S. Nam, “A new method to suppress harmonics using λ/4 bias line combined by defected ground structure in power amplifiers,” IEEE Microwave and Wireless Components Letters, vol. 13, no. 12, pp. 538–540, 2003. View at Publisher · View at Google Scholar · View at Scopus
22. Y. J. Sung, C. S. Ahn, and Y.-S. Kim, “Size reduction and harmonic suppression of rat-race hybrid coupler using defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 14, no. 1, pp. 7–9, 2004. View at Publisher · View at Google Scholar · View at Scopus
23. 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
24. 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
25. D. Guha, M. Biswas, and Y. M. M. Antar, “Microstrip patch antenna with defected ground structure for cross polarization suppression,” IEEE Antennas and Wireless Propagation Letters, vol. 4, no. 1, pp. 455–458, 2005. View at Publisher · View at Google Scholar · View at Scopus
26. D. Nesic, “A brief review of microwave photonic band-gap (PBG) structures,” Microwave Review, 18–24, july 2001.
27. Y. Qlan, “A microstrip patch antenna using novel photonic band-gap structures,” Microwave Journal, vol. 42, no. 1, pp. 66–76, 1999. View at Google Scholar · View at Scopus
28. F. Yang and Y. Rahmat-Samii, “Applications of electromagnetic band-gap (EBG) structures in microwave antenna designs,” in Proceedings of the 3rd International Conference on Microwave and Millimeter Wave Technology, pp. 528–531, IEEE, Beijing, China, August 2002. View at Publisher · View at Google Scholar
29. J.-S. Lim, Y.-T. Lee, C.-S. Kim, D. Ahn, and S. Nam, “A vertically periodic defected ground structure and its application in reducing the size of microwave circuits,” IEEE Microwave and Wireless Components Letters, vol. 12, no. 12, pp. 479–481, 2002. View at Publisher · View at Google Scholar · View at Scopus
30. C. S. Kim, J. S. Lim, S. Nam, K. Y. Kang, and D. Ahn, “Equivalent circuit modelling of spiral defected ground structure for microstrip line,” Electronics Letters, vol. 38, no. 19, pp. 1109–1110, 2002. View at Publisher · View at Google Scholar · View at Scopus
31. J.-S. Park, J.-H. Kim, J.-H. Lee et al., “A novel equivalent circuit and modeling method for defected ground structure and its application to optimization of a DGS lowpass filter,” in Proceedings of the IEEE MTT-S International Microwave Symposium Digest, vol. 1, pp. 417–420, IEEE, Washington, DC, USA, June 2002. View at Publisher · View at Google Scholar
32. N. C. Karmakar, S. M. Roy, and I. Balbin, “Quasi-static modeling of defected ground structure,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, no. 5, pp. 2160–2168, 2006. View at Publisher · View at Google Scholar · View at Scopus
33. J.-S. Kuo and K.-L. Wong, “A compact microstrip antenna with meandering slots in the ground plane,” Microwave and Optical Technology Letters, vol. 29, no. 2, pp. 95–97, 2001. View at Publisher · View at Google Scholar · View at Scopus
34. H. D. Oskouei, K. Forooraghi, and M. Hakkak, “Guided and leaky wave characteristics of periodic defected ground structures,” Progress in Electromagnetics Research, vol. 73, pp. 15–27, 2007. View at Publisher · View at Google Scholar · View at Scopus
35. C. Caloz, H. Okabe, T. Iwai, and T. Itoh, “A simple and accurate model for microstrip structures with slotted ground plane,” IEEE Microwave and Wireless Components Letters, vol. 14, no. 4, pp. 133–135, 2004. View at Publisher · View at Google Scholar · View at Scopus
36. 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, 2002. View at Publisher · View at Google Scholar · View at Scopus
37. A. Boutejdar, G. Nadim, S. Amari, and A. S. Omar, “Control of band- stop response of cascaded microstrip low-pass-bandstop filters using arrowhead slots in backside metallic ground plane,” IEEE Antennas and Propagation Society International Symposium, vol. 1B, pp. 574–577, 2005. View at Google Scholar
38. J. Li, J. Chen, Q. Xue, J. Wang, W. Shao, and L. Xue, “Compact microstrip lowpass filter based on defected ground structure and compensated microstrip line,” in Proceedings of the 2005 IEEE MTT-S International Microwave Symposium, Long Beach, Calif, USA, June 2005. View at Publisher · View at Google Scholar · View at Scopus
39. J.-X. Chen, J.-L. Li, K.-C. Wan, and Q. Xue, “Compact quasi-elliptic function filter based on defected ground structure,” IEE Proceedings: Microwaves, Antennas and Propagation, vol. 153, no. 4, pp. 320–324, 2006. View at Publisher · View at Google Scholar · View at Scopus
40. 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
41. A. B. Abdel-Rahman, A. K. Verma, A. Boutejdar, and A. S. Omar, “Control of bandstop response of Hi-Lo microstrip low-pass filter using slot in ground plane,” IEEE Transactions on Microwave Theory and Techniques, vol. 52, no. 3, pp. 1008–1013, 2004. View at Publisher · View at Google Scholar · View at Scopus
42. M. K. Mandal and S. Sanyal, “A novel defected ground structure for planar circuits,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 2, pp. 93–95, 2006. View at Publisher · View at Google Scholar · View at Scopus
43. D. Guha, S. Biswas, M. Biswas, J. Y. Siddiqui, and Y. M. M. Antar, “Concentric ring-shaped defected ground structures for microstrip applications,” IEEE Antennas and Wireless Propagation Letters, vol. 5, no. 1, pp. 402–405, 2006. View at Publisher · View at Google Scholar · View at Scopus
44. A. Balalem, A. R. Ali, J. Machac, and A. Omar, “Quasi-elliptic microstrip low-pass filters using an interdigital DGS slot,” IEEE Microwave and Wireless Components Letters, vol. 17, no. 8, pp. 586–588, 2007. View at Publisher · View at Google Scholar · View at Scopus
45. Z.-Z. Hou, “Novel wideband filter with a transmission zero based on split-ring resonator DGS,” Microwave and Optical Technology Letters, vol. 50, no. 6, pp. 1691–1693, 2008. View at Publisher · View at Google Scholar · View at Scopus
46. S. N. Burokur, M. Latrach, and S. Toutain, “A novel type of microstrip coupler utilizing a slot split-ring resonators defected ground plane,” Microwave and Optical Technology Letters, vol. 48, no. 1, pp. 138–141, 2006. View at Publisher · View at Google Scholar · View at Scopus
47. J.-S. Lim, C.-S. Kim, D. Ahn, Y.-C. Jeong, and S. Nam, “Design of low-pass filters using defected ground structure,” IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 8, pp. 2539–2544, 2005. View at Publisher · View at Google Scholar · View at Scopus
48. J. Yang and W. Wu, “Compact elliptic-function low-pass filter using defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 18, no. 9, pp. 578–580, 2008. View at Publisher · View at Google Scholar · View at Scopus
49. A. K. Verma and A. Kumar, “Synthesis of microstrip lowpass filter using defected ground structures,” IET Microwaves, Antennas and Propagation, vol. 5, no. 12, pp. 1431–1439, 2011. View at Publisher · View at Google Scholar · View at Scopus
50. H. Taher, “High-performance low-pass filter using complementary square split ring resonators defected ground structure,” IET Microwaves, Antennas & Propagation, vol. 5, no. 7, pp. 771–775, 2011. View at Publisher · View at Google Scholar · View at Scopus
51. M. Kufa and Z. Raida, “Lowpass filter with reduced fractal defected ground structure,” Electronics Letters, vol. 49, no. 3, pp. 199–201, 2013. View at Publisher · View at Google Scholar · View at Scopus
52. S.-W. Ting, K.-W. Tam, and R. P. Martins, “Miniaturized microstrip lowpass filter with wide stopband using double Equilateral U-shaped defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 5, pp. 240–242, 2006. View at Publisher · View at Google Scholar · View at Scopus
53. M. Naghshvarian-Jahromi and M. Tayarani, “Defected ground structure band-stop filter by semicomplementary split ring resonators,” IET Microwaves, Antennas and Propagation, vol. 5, no. 11, pp. 1386–1391, 2011. View at Publisher · View at Google Scholar · View at Scopus
54. F.-C. Chen, N.-Y. Zhang, P.-S. Zhang, and Q.-X. Chu, “Design of ultra-wideband bandstop filter using defected ground structure,” Electronics Letters, vol. 49, no. 16, pp. 1010–1011, 2013. View at Publisher · View at Google Scholar · View at Scopus
55. Y. L. Zhang, W. Hong, K. Wu, J. X. Chen, and H. J. Tang, “Novel substrate integrated waveguide cavity filter with defected ground structure,” IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 4, pp. 1280–1287, 2005. View at Publisher · View at Google Scholar · View at Scopus
56. W. Shen, W.-Y. Yin, and X.-W. Sun, “Compact substrate integrated waveguide (SIW) filter with defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 21, no. 2, pp. 83–85, 2011. View at Publisher · View at Google Scholar · View at Scopus
57. L.-Y. Ren and H. He, “Wide stopband bandpass filter based on dual-plane microstrip/interdigital DGS slot structure,” Electronics Letters, vol. 45, no. 25, article 1331, 2009. View at Publisher · View at Google Scholar · View at Scopus
58. W.-J. Lin, J.-Y. Li, L.-S. Chen, D.-B. Lin, and M.-P. Houng, “Investigation in open circuited metal lines embedded in defected ground structure and its applications to UWB filters,” IEEE Microwave and Wireless Components Letters, vol. 20, no. 3, pp. 148–150, 2010. View at Publisher · View at Google Scholar · View at Scopus
59. J.-K. Lee and Y.-S. Kim, “Ultra-wideband bandpass filter with improved upper stopband performance using defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 20, no. 6, pp. 316–318, 2010. View at Publisher · View at Google Scholar · View at Scopus
60. J. Shi, J.-X. Chen, and Q. Xue, “A quasi-elliptic function dual-band bandpass filter stacking spiral-shaped CPW defected ground structure and back-side coupled strip lines,” IEEE Microwave and Wireless Components Letters, vol. 17, no. 6, pp. 430–432, 2007. View at Publisher · View at Google Scholar · View at Scopus
61. H. W. Liu, L. Shen, Z. C. Zhang, J. S. Lim, and D. Ahn, “Dual-mode dual-band bandpass filter using defected ground waveguide,” Electronics Letters, vol. 46, no. 13, pp. 895–897, 2010. View at Publisher · View at Google Scholar · View at Scopus
62. G. Chaudhary, H. Choi, Y. Jeong, J. Lim, D. Kim, and J.-C. Kim, “Design of dual-band bandpass filter using DGS with controllable second passband,” IEEE Microwave and Wireless Components Letters, vol. 21, no. 11, pp. 589–591, 2011. View at Publisher · View at Google Scholar · View at Scopus
63. S. Shi, W.-W. Choi, W. Che, K.-W. Tam, and Q. Xue, “Ultra-wideband differential bandpass filter with narrow notched band and improved common-mode suppression by DGS,” IEEE Microwave and Wireless Components Letters, vol. 22, no. 4, pp. 185–187, 2012. View at Publisher · View at Google Scholar · View at Scopus
64. Y. Song, G.-M. Yang, and W. Geyi, “Compact UWB bandpass filter with dual notched bands using defected ground structures,” IEEE Microwave and Wireless Components Letters, vol. 24, no. 4, pp. 230–232, 2014. View at Publisher · View at Google Scholar · View at Scopus
65. D. A. Salem, A. S. Mohra, and A. Sebak, “A compact ultra wideband bandpass filter using arrow coupled lines with defected ground structure,” Journal of Electrical Systems and Information Technology, vol. 1, no. 1, pp. 36–44, 2014. View at Publisher · View at Google Scholar
66. F. Martin, F. Falcone, J. Bonache, T. Lopetegi, M. Laso, and M. Sorolla, “Dual electromagnetic bandgap CPW structures for filter applications,” IEEE Microwave and Wireless Components Letters, vol. 13, no. 9, pp. 393–395, 2001. View at Publisher · View at Google Scholar
67. H. B. El-Shaarawy, F. Coccetti, R. Plana, M. El-Said, and E. A. Hashish, “Novel reconfigurable defected ground structure resonator on coplanar waveguide,” IEEE Transactions on Antennas and Propagation, vol. 58, no. 11, pp. 3622–3628, 2010. View at Publisher · View at Google Scholar · View at Scopus
68. D. B. Schlieter and R. M. Henderson, “High Q defected ground structures in grounded coplanar waveguide,” Electronics Letters, vol. 48, no. 11, p. 635, 2012. View at Publisher · View at Google Scholar · View at Scopus
69. J. Wang, H. Ning, and L. Mao, “A compact reconfigurable bandstop resonator using defected ground structure on coplanar waveguide,” IEEE Antennas and Wireless Propagation Letters, vol. 11, pp. 457–459, 2012. View at Publisher · View at Google Scholar · View at Scopus
70. 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 Components Letters, vol. 11, no. 4, pp. 170–172, 2001. View at Publisher · View at Google Scholar · View at Scopus
71. 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
72. H.-J. Choi, J.-S. Lim, and Y.-C. Jeong, “A new design of Doherty amplifiers using defected ground structure,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 12, pp. 687–689, 2006. View at Publisher · View at Google Scholar · View at Scopus
73. J.-S. Kuo and G.-B. Hsieh, “Gain enhancement of a circularly polarized equilateral-triangular microstrip antenna with a slotted ground plane,” IEEE Transactions on Antennas and Propagation, vol. 51, no. 7, pp. 1652–1656, 2003. View at Publisher · View at Google Scholar · View at Scopus
74. J.-S. Row, “Design of aperture-coupled annular-ring microstrip antennas for circular polarization,” IEEE Transactions on Antennas and Propagation, vol. 53, no. 5, pp. 1779–1784, 2005. View at Publisher · View at Google Scholar · View at Scopus
75. J. P. Thakur and J.-S. Park, “An advance design approach for circular polarization of the microstrip antenna with unbalance DGS feedlines,” IEEE Antennas and Wireless Propagation Letters, vol. 5, no. 1, pp. 101–103, 2006. View at Publisher · View at Google Scholar · View at Scopus
76. A. K. Gautam and B. Kr Kanaujia, “A novel dual-band asymmetric slit with defected ground structure microstrip antenna for Circular Polarization operation,” Microwave and Optical Technology Letters, vol. 55, no. 6, pp. 1198–1201, 2013. View at Publisher · View at Google Scholar · View at Scopus
77. J.-W. Wu, H.-M. Hsiao, J.-H. Lu, and S.-H. Chang, “Dual broadband design of rectangular slot antenna for 2.4 and 5 GHz wireless communication,” Electronics Letters, vol. 40, no. 23, pp. 1461–1463, 2004. View at Publisher · View at Google Scholar · View at Scopus
78. A. P. Saghati, M. Azarmanesh, and R. Zaker, “A novel switchable single- and multifrequency triple-slot antenna for 2.4-GHz bluetooth, 3.5-GHz WiMax, and 5.8-GHz WLAN,” IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 534–537, 2010. View at Publisher · View at Google Scholar · View at Scopus
79. W.-C. Liu, C.-M. Wu, and Y. Dai, “Design of triple-frequency microstrip-fed monopole antenna using defected ground structure,” IEEE Transactions on Antennas and Propagation, vol. 59, no. 7, pp. 2457–2463, 2011. View at Publisher · View at Google Scholar · View at Scopus
80. J. Pei, A.-G. Wang, S. Gao, and W. Leng, “Miniaturized triple-band antenna with a defected ground plane for WLAN/WiMAX applications,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 298–301, 2011. View at Publisher · View at Google Scholar · View at Scopus
81. M. A. Antoniades and G. V. Eleftheriades, “A compact multiband monopole antenna with a defected ground plane,” IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 652–655, 2008. View at Publisher · View at Google Scholar · View at Scopus
82. C. H. See, R. A. Abd-Alhameed, D. Zhou, T. H. Lee, and P. S. Excell, “A crescent-shaped multiband planar monopole antenna for mobile wireless applications,” IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 152–155, 2010. View at Publisher · View at Google Scholar · View at Scopus
83. M. K. Khandelwal, B. K. Kanaujia, S. Dwari, S. Kumar, and A. K. Gautam, “Triple band circularly polarized compact microstrip antenna with defected ground structure for wireless applications,” International Journal of Microwave and Wireless Technologies, vol. 8, no. 6, pp. 943–953, 2015. View at Publisher · View at Google Scholar · View at Scopus
84. J.-Y. Jan and J.-W. Su, “Bandwidth enhancement of a printed wide-slot antenna with a rotated slot,” IEEE Transactions on Antennas and Propagation, vol. 53, no. 6, pp. 2111–2114, 2005. View at Publisher · View at Google Scholar · View at Scopus
85. Y. Sung, “Bandwidth enhancement of a microstrip line-fed printed wide-slot antenna with a parasitic center patch,” IEEE Transactions on Antennas and Propagation, vol. 60, no. 4, pp. 1712–1716, 2012. View at Publisher · View at Google Scholar · View at Scopus
86. K. H. Chiang and K. W. Tam, “Microstrip monopole antenna with enhanced bandwidth using defected ground structure,” IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 532–535, 2008. View at Publisher · View at Google Scholar · View at Scopus
87. C. Kumar and D. Guha, “Defected ground structure (DGS)-integrated rectangular microstrip patch for improved polarisation purity with wide impedance bandwidth,” IET Microwaves, Antennas and Propagation, vol. 8, no. 8, pp. 589–596, 2014. View at Publisher · View at Google Scholar · View at Scopus
88. N. Ojaroudi, “Compact UWB monopole antenna with enhanced bandwidth using rotated L-shaped slots and parasitic structures,” Microwave and Optical Technology Letters, vol. 56, no. 1, pp. 175–178, 2014. View at Publisher · View at Google Scholar · View at Scopus
89. K. Yin and J. P. Xu, “Compact ultra-wideband antenna with dual bandstop characteristic,” Electronics Letters, vol. 44, no. 7, pp. 453–454, 2008. View at Publisher · View at Google Scholar · View at Scopus
90. M. Abdollahvand, G. Dadashzadeh, and D. Mostafa, “Compact dual band-notched printed monopole antenna for UWB application,” IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 1148–1151, 2010. View at Publisher · View at Google Scholar · View at Scopus
91. A. Nouri and G. R. Dadashzadeh, “A compact UWB band-notched printed monopole antenna with defected ground structure,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 1178–1181, 2011. View at Publisher · View at Google Scholar · View at Scopus
92. M. Akbari, S. Zarbakhsh, and M. Marbouti, “A novel UWB antenna with dual-stopband characteristics,” Microwave and Optical Technology Letters, vol. 55, no. 11, pp. 2741–2745, 2013. View at Publisher · View at Google Scholar · View at Scopus
93. J. Wang, Y. Yin, T. Wang, and X. Liu, “Compact dual-band-notched UWB antenna with high notch-band-edge selectivity,” Microwave and Optical Technology Letters, vol. 55, no. 10, pp. 2507–2513, 2013. View at Publisher · View at Google Scholar · View at Scopus
94. M. K. Khandelwal, B. K. Kanaujia, and A. K. Gautam, “Low profile Uwb log-periodic dipole antenna for wireless communication with notched band,” Microwave and Optical Technology Letters, vol. 55, no. 12, pp. 2901–2906, 2013. View at Publisher · View at Google Scholar · View at Scopus
95. P. Saha, A. Singh, V. K. Pandey, B. K. Kanaujia, and M. K. Khandelwal, “Design and analysis of UWB circular ring two element microstrip patch antenna array with notched band for modern wireless applications,” Microwave and Optical Technology Letters, vol. 57, no. 9, pp. 2067–2072, 2015. View at Publisher · View at Google Scholar · View at Scopus
96. U. Chakraborty, S. K. Chowdhury, and A. K. Bhattacharjee, “Frequency tuning and miniaturization of square microstrip antenna embedded with ‘T’-shaped defected ground structure,” Microwave and Optical Technology Letters, vol. 55, no. 4, pp. 869–872, 2013. View at Publisher · View at Google Scholar · View at Scopus
97. M. K. Khandelwal, B. K. Kanaujia, S. Dwari, S. Kumar, and A. K. Gautam, “Analysis and design of wide band Microstrip-line-fed antenna with defected ground structure for Ku band applications,” AEU—International Journal of Electronics and Communications, vol. 68, no. 10, pp. 951–957, 2014. View at Publisher · View at Google Scholar · View at Scopus
98. C. Kumar and D. Guha, “Nature of cross-polarized radiations from probe-fed circular microstrip antennas and their suppression using different geometries of defected ground structure (DGS),” IEEE Transactions on Antennas and Propagation, vol. 60, no. 1, pp. 92–101, 2012. View at Publisher · View at Google Scholar · View at Scopus
99. M. K. Khandelwal, B. K. Kanaujia, S. Dwari, S. Kumar, and A. K. Gautam, “Analysis and design of dual band compact stacked microstrip patch antenna with defected ground structure for WLAN/WiMAX applications,” AEU—International Journal of Electronics and Communications, vol. 69, no. 1, pp. 39–47, 2015. View at Publisher · View at Google Scholar · View at Scopus
100. M. K. Khandelwal, B. K. Kanaujia, S. Dwari, S. Kumar, and A. K. Gautam, “Bandwidth enhancement and cross-polarization suppression in ultrawideband microstrip antenna with defected ground plane,” Microwave and Optical Technology Letters, vol. 56, no. 9, pp. 2141–2146, 2014. View at Publisher · View at Google Scholar · View at Scopus
101. G. Chaudhary, Y. Jeong, and J. Lim, “Miniaturized dual-band negative group delay circuit using dual-plane defected structures,” IEEE Microwave and Wireless Components Letters, vol. 24, no. 8, pp. 521–523, 2014. View at Publisher · View at Google Scholar · View at Scopus
102. J. Lim, S. Oh, J.-J. Koo, Y. Jeong, and D. Ahn, “A power divider with adjustable dividing ratio,” IEICE Transactions on Electronics, vol. 91, no. 3, pp. 389–391, 2008. View at Publisher · View at Google Scholar · View at Scopus
103. I. Chang and B. Lee, “Design of defected ground structures for harmonic control of active microstrip antenna,” in Proceedings of the IEEE Antennas and Propagation Society International Symposium, vol. 2, pp. 852–855, IEEE, San Antonio, Tex, USA, June 2002. View at Scopus
104. N. C. Karmakar, “Hi-Z, low-Z defected ground structure,” Microwave and Optical Technology Letters, vol. 48, no. 10, pp. 1909–1912, 2006. View at Publisher · View at Google Scholar · View at Scopus
105. B. Wu, B. Li, T. Su, and C.-H. Liang, “Equivalent-circuit analysis and lowpass filter design of split-ring resonator DGS,” Journal of Electromagnetic Waves and Applications, vol. 20, no. 14, pp. 1943–1953, 2006. View at Publisher · View at Google Scholar · View at Scopus
106. G. M. Yang, R. Jin, J. Geng, X. Huang, and G. Xiao, “Ultra-wideband bandpass filter with hybrid quasi-lumped elements and defected ground structure,” IET Microwaves, Antennas and Propagation, vol. 1, no. 3, pp. 733–736, 2007. View at Publisher · View at Google Scholar · View at Scopus