1. Wolff, I. and N. Knoppik, "Microstrip ring resonator and dispersion measurements on microstrip lines," Electron. Lett., Vol. 7, 779-781, 1971.
doi:10.1049/el:19710532
2. Mondal, P. and M. K. Mandal, "Design of dual-band bandpass filters using stub-loaded open-loop resonators," IEEE Trans. on Microw. Theory and Tech., Vol. 56, No. 1, 150-155, 2008.
doi:10.1109/TMTT.2007.912204
3. Chen, F. C., Z. H. Chu, and Q. X. Tu, "Design of compact dual-band bandpass filter using short stub loaded resonator," Microwave Opt. Technol. Lett., Vol. 51, No. 4, 959-963, 2009.
doi:10.1002/mop.24209
4. Wu, X.-H., Q.-X. Chu, and X.-K. Tian, "Dual-band bandpass filter using novel side-stub-loaded resonator," Microwave Opt. Technol. Lett., Vol. 54, No. 2, 362-364, 2012.
doi:10.1002/mop.26537
5. Chin, K.-S. and C.-K. Lung, "Miniaturized microstrip dual-band bandstop filters using tri-section stepped-impedance resonators," Progress In Electromagnetics Research C, Vol. 10, 37-48, 2009.
doi:10.2528/PIERC09080306
6. Chiou, Y.-C., "Transmission zero design graph for dual-mode dual-band filter with periodic stepped-impedance ring resonator," Progress In Electromagnetics Research, Vol. 108, 23-36, 2010.
doi:10.2528/PIER10071608
7. You, B., L. Chen, Y. Liang, et al. "A high-selectivity tunable dual-band bandpass filter using stub-loaded stepped-impedance resonators," IEEE Microw. Wirel. Compon. Lett., Vol. 24, No. 11, 736-738, 2014.
doi:10.1109/LMWC.2014.2348322
8. Chen, C.-F., S.-F. Chang, B.-H. Tseng, and J.-H. Weng, "Compact dual-band stepped-impedance resonator filter with separate coupling paths," Electronics Letters, Vol. 50, No. 21, 1551-1552, 2014.
doi:10.1049/el.2014.2982
9. Zhang, R. and L. Zhu, "Design of a compact dual-band bandpass filter using coupled stepped-impedance resonators," IEEE Microw. Wirel. Compon. Lett., Vol. 24, No. 3, 155-157, 2014.
doi:10.1109/LMWC.2013.2293670
10. Miyake, H., S. Kitazawa, and T. Ishizaki, "A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones," IEEE MTT-S Int. Microw. Symp. Dig., Vol. 2, 789-792, 1997.
11. Watanbe, T., K. Furutani, and N. Nakajima, "Antenna switch duplexer for dual-band phone (GSM/DCS) using LTCC multilayer technology," IEEE MTT-S Int. Microw. Symp. Dig., Vol. 1, 215-218, 1999.
12. Wang, K., L. Zhu, S.-W. Wong, et al. "Balanced dual-band BPF with intrinsic common-mode suppression on double-layer substrate," Electron. Lett., Vol. 51, No. 9, 705-707, 2015.
doi:10.1049/el.2015.0327
13. Garcia-Garcia, J., J. Bonache, and F. Martin, "Application of electromagnetic bandgap to the design of ultra-wide bandpass filters with good out-of-band performance," IEEE Trans. on Microw. Theory and Tech., Vol. 54, 4136-4140, 2006.
doi:10.1109/TMTT.2006.886155
14. Yang, F., K. Ma, Y. Qian, and T. Itoh, "A uniplanar compact photonic-bandgap (UC-PBG) structure and its applications for microwave circuit," IEEE Trans. on Microw. Theory and Tech., Vol. 47, No. 8, 1509-1514, 1999.
doi:10.1109/22.780402
15. Radonic, V. and V. C. Bengin, "Control of inter-resonator coupling using defected ground structure lattice," Electron. Lett., Vol. 51, No. 5, 399-401, 2015.
doi:10.1049/el.2014.4177
16. Ahn, D., J. Park, C. Kim, J. Kim, Y. Qian, and T. Itoh, "A design of the low-pass filter using a novel microstrip defected ground structure," IEEE Trans. on Microw. Theory and Tech., Vol. 49, No. 1, 86-93, 2001.
doi:10.1109/22.899965
17. Chaudhary, G., H. Choi, Y. Jeong, et al. "Design of dual-band bandpass filter using DGS with controllable second passband," IEEE Microw. Wirel. Compon. Lett., Vol. 21, No. 11, 589-591, 2011.
doi:10.1109/LMWC.2011.2167140
18. Song, K., F. Zhang, and Y. Fan, "Miniaturized dual-band bandpass filter with good frequency selectivity using SIR and DGS," AEU — International Journal of Electronics and Communications, Vol. 68, No. 5, 384-387, 2014.
doi:10.1016/j.aeue.2013.10.005
19. Jin, X., Z.-H. Zhang, L. Wang, and B.-R. Guan, "Compact dual-band bandpass filter using single meander multimode DGS resonator," Electron. Lett., Vol. 49, No. 17, 1083-1084, 2013.
doi:10.1049/el.2013.0977
20. Su, T., L.-J. Zhang, S.-J. Wang, Z.-P. Li, and Y.-L. Zhang, "Design of dual-band bandpass filter with constant absolute bandwidth," Microwave Opt. Technol. Lett., Vol. 56, No. 3, 715-718, 2014.
doi:10.1002/mop.28144
21. Huang, S. Y. and Y. H. Lee, "Susceptibility of an electromagnetic bandgap filter," IEEE Transactions on Electromagnetic Compatibility, Vol. 52, No. 3, 599-603, 2010.
doi:10.1109/TEMC.2009.2032170
22. Du, Z., K. Gong, J. S. Fu, B. Gao, and Z. Feng, "Influence of a metallic enclosure on the S-parameters of microstrip photonic bandgap structures," IEEE Transactions on Electromagnetic Compatibility, Vol. 44, No. 2, 324-328, 2002.
doi:10.1109/TEMC.2002.1003397
23. Chang, K. and L. H. Hsieh, Microwave Ring Circuits and Related Structures, 2nd edition, Wiley-Interscience, Hoboken, NJ, 2004.
doi:10.1002/0471721298