1. Carver, Keith and James Mink, "Microstrip antenna technology," IEEE Transactions on Antennas and Propagation, Vol. 29, No. 1, 2-24, 1981. Google Scholar
2. Liu, Yong, Li-Ming Si, Meng Wei, Pixian Yan, Pengfei Yang, Hongda Lu, Chao Zheng, Yong Yuan, Jinchao Mou, Xin Lv, et al. "Some recent developments of microstrip antenna," International Journal of Antennas and Propagation, Vol. 2012, Article ID 428284, 2012. Google Scholar
3. Quan, Xulin, RongLin Li, YueHui Cui, and Manos M. Tentzeris, "Analysis and design of a compact dual-band directional antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 547-550, 2012. Google Scholar
4. Suh, Young-Ho and Kai Chang, "Low cost microstrip-fed dual frequency printed dipole antenna for wireless communications," Electronics Letters, Vol. 36, No. 14, 1177-1179, 2000. Google Scholar
5. Liu, Zi Dong, Peter S. Hall, and David Wake, "Dual-frequency planar inverted-F antenna," IEEE Transactions on Antennas and Propagation, Vol. 45, No. 10, 1451-1458, 1997. Google Scholar
6. Salonen, Pekka, Mikko Keskilammi, and Markku Kivikoski, "Single-feed dual-band planar inverted-F antenna with U-shaped slot," IEEE Transactions on Antennas and Propagation, Vol. 48, No. 8, 1262-1264, 2000. Google Scholar
7. Wong, Kin-Lu, Liang-Che Chou, and Chih-Ming Su, "Dual-band flat-plate antenna with a shorted parasitic element for laptop applications," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 1, 539-544, 2005. Google Scholar
8. Rajeshkumar, V. and S. Raghavan, "Trapezoidal ring quad-band fractal antenna for WLAN/WiMAX applications," Microwave and Optical Technology Letters, Vol. 56, No. 11, 2545-2548, 2014. Google Scholar
9. Beigi, Payam and Pejman Mohammadi, "A novel small triple-band monopole antenna with crinkle fractal-structure," Aeu-international Journal of Electronics and Communications, Vol. 70, No. 10, 1382-1387, 2016. Google Scholar
10. Pendry, John B., Anthony J. Holden, David J. Robbins, and W. J. Stewart, "Magnetism from conductors and enhanced nonlinear phenomena," IEEE Transactions on Microwave Theory and Techniques, Vol. 47, No. 11, 2075-2084, 1999. Google Scholar
11. Shelby, Richard A., David R. Smith, and Seldon Schultz, "Experimental verification of a negative index of refraction," Science, Vol. 292, No. 5514, 77-79, 2001. Google Scholar
12. Zhu, Weiren, Ivan D. Rukhlenko, and Malin Premaratne, "Light amplification in zero-index metamaterial with gain inserts," Applied Physics Letters, Vol. 101, No. 3, 031907, 2012. Google Scholar
13. Sarkar, Debdeep, Kushmanda Saurav, and Kumar Vaibhav Srivastava, "Multi-band microstrip-fed slot antenna loaded with split-ring resonator," Electronics Letters, Vol. 50, No. 21, 1498-1500, 2014. Google Scholar
14. Patel, Shobhit K. and Yogeshwar Kosta, "Complementary split ring resonator metamaterial to achieve multifrequency operation in microstrip-based radiating structure design," Journal of Modern Optics, Vol. 61, No. 3, 249-256, 2014. Google Scholar
15. Antoniades, Marco A. and George V. Eleftheriades, "Multiband compact printed dipole antennas using NRI-TL metamaterial loading," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 12, 5613-5626, 2012. Google Scholar
16. Balanis, Constantine A., Antenna Theory Analysis and Design, 811, John Wiley & Sons Inc., 2005.
17. Gautam, Anil Kumar, Lalit Kumar, Binod Kumar Kanaujia, and Karumudi Rambabu, "Design of compact F-shaped slot triple-band antenna for WLAN/WiMAX applications," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 3, 1101-1105, 2015. Google Scholar
18. Kumar, Amit, Mahesh P. Abegaonkar, and Shiban K. Koul, "Triple band miniaturized patch antenna loaded with metamaterial unit cell for defense applications," 2016 11th International Conference on Industrial and Information Systems (iciis), 833-837, 2016.
19. Neeshu, K. M. and Anjini Kumar Tiwary, "Metamaterial loaded antenna with improved efficiency and gain for wideband application," Iete Journal of Research, Vol. 69, No. 3, 1-8, 2021. Google Scholar
20. Tuloti, Seyed Hashem Ramazannia, Pejman Rezaei, and Farzad Tavakkol Hamedani, "High-efficient wideband transmitarray antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 5, 817-820, 2018. Google Scholar
21. Nosrati, Milad, Pejman Rezaei, Mohammad Danaie, and Shahram Parvizi, "Wideband transmitarray antenna using electric ring resonator shaped slot element," Journal of Electromagnetic Waves and Applications, Vol. 35, No. 15, 2092-2101, 2021. Google Scholar
22. Saraswat, Ritesh K. and Mithilesh Kumar, "A vertex-fed hexa-band frequency reconfigurable antenna for wireless applications," International Journal of Rf and Microwave Computer-aided Engineering, Vol. 29, No. 10, e21893, 2019. Google Scholar
23. Selvi, N. Thamil, P. Thiruvalar Selvan, S. P. K. Babu, and R. Pandeeswari, "Multiband metamaterial-inspired antenna using split ring resonator," Computers & Electrical Engineering, Vol. 84, 106613, 2020. Google Scholar
24. Thankachan, Shiney and Binu Paul, "Metamaterial inspired electrically small multiband monopole antenna using single DNG MTM and ring resonators," Advances in Electrical and Computer Engineering, 2021. Google Scholar
25. Milias, Christos, Rasmus B. Andersen, Pavlos I. Lazaridis, Zaharias D. Zaharis, Bilal Muhammad, Jes T. B. Kristensen, Albena Mihovska, and Dan D. S. Hermansen, "Miniaturized multiband metamaterial antennas with dual-band isolation enhancement," IEEE Access, Vol. 10, 64952-64964, 2022. Google Scholar
26. Jha, Pankaj, Anubhav Kumar, and Navneet Sharma, "A metamaterial inspired split ring resonator accomplished multiband antenna for 5G and other wireless applications," Revue Roumatine Des Sciences Techniques --- Série Électrotechnique et Énergétique. Google Scholar