1. Balanis, C. A., Antena Theory, Analysis and Design, 3rd Ed., Wiley, 2005.
2. Garg, R., P. Bhartia, I. Bahl, and A. Ittipiboon, Microstrip Antenna Design Book, Artech House, 2000.
3. Gong, X., L. Tong, Y. Tian, and B. Gao, "Design of a microstrip-fed hexagonal shape UWB antenna with triple notched bands," Progress In Electromagnetics Research C, Vol. 62, 77-87, 2016.
doi:10.2528/PIERC15101701
4. Hu, Y., Y. J. Zhang, and J. Fan, "Equivalent circuit model of coaxial probes for patch antennas," Progress In Electromagnetics Research B, Vol. 38, 281-296, 2012.
doi:10.2528/PIERB11121210
5. Lee, R. Q., K. F. Lee, and J. Bobinchak, "Characteristics of a two-layer electromagnetically coupled rectangular patch antennas," Electronic Letters, Vol. 23, No. 20, 1070-1072, Sep. 1987.
doi:10.1049/el:19870748
6. Mandal, T. and S. Das, "Design of a CPW fed simple hexagonal shape UWB antenna with WLAN and WiMAX band rejection characteristics," Journal of Computational Electronics, Vol. 14, No. 1, 300-308, Mar. 2015.
doi:10.1007/s10825-014-0656-y
7. Kushwaha, N. and R. Kumar, "Design of slotted ground hexagonal microstrip patch antenna and gain improvement with FSS screen," Progress In Electromagnetics Research B, Vol. 51, 177-199, 2013.
doi:10.2528/PIERB13031604
8. Carver, K. and J. Mink, "Microstrip antenna technology," IEEE Transactions on Antennas and Propagation, Vol. 29, No. 1, 2-24, Jan. 1981.
doi:10.1109/TAP.1981.1142523
9. Kshitija, T., S. Ramakrishna, S. B. Shirol, and P. Kumar, "Micro-strip patch antenna using various types of feeding techniques: An implementation," International Conference on Intelligent Sustainable Systems (ICISS), 318-322, Tamil Nadu, India, Nov. 2019.
10. Sahoo, A. B., N. Patnaik, A. Ravi, S. Behera, and B. B. Mangaraj, "Design of a miniaturized circular microstrip patch antenna for 5G applications," International Conference on Emerging Trends in Information Technology and Engineering (IC-ETITE), 1-4, Vellore, India, May 2020.
11. Bakariya, P. S., S. Dwari, M. Sarkar, and M. K. Mandal, "Proximity-coupled multiband microstrip antenna for wireless applications," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 646-649, Sep. 2015.
doi:10.1109/LAWP.2014.2376693
12. Casula, G. A., P. Maxia, G. Montisci, G. Valente, G. Mazzarella, and T. Pisanu, "A multiband proximity-coupled-fed flexible microstrip antenna for wireless systems," International Journal of Antennas and Propagation, Vol. 7, 1-7, Sep. 2016.
doi:10.1155/2016/8536058
13. Hossain, M. B. and S. Datto, "Improvement of antenna performance using stacked microstrip patch antenna," International Conference on Electrical, Computer and Telecommunication Engineering (ICECTE), 1-4, Rajshahi, Bangladesh, Feb. 2016.
14. Arya, A. K., A. Patnaik, and M. Kartikeyan, "Microstrip patch antenna with skew-F shaped DGS for dual band operation," Progress In Electromagnetics Research M, Vol. 19, 147-160, 2011.
doi:10.2528/PIERM11052305
15. Evangelista, T. D. S., A. G. Neto, and A. J. R. Serres, "Improved microstrip antenna with FSS superstrate for 5G NR applications," 15th European Conference on Antennas and Propagation (EuCAP), 1-5, Mar. 2021.
16. Nashaat, D., A. H. Elsadek, E. A. Abdallah, M. F. Iskander, and H. M. El Hennawy, "Ultrawide bandwidth 2×2 microstrip patch array antenna using electromagnetic band-gap structure (EBG)," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 5, May 2011.
doi:10.1109/TAP.2011.2123052
17. Saini, J. and M. K. Garg, "PBG structured compact antenna with switching capability in lower and upper bands of 5G," Progress In Electromagnetics Research M, Vol. 94, 19-29, 2020.
doi:10.2528/PIERM20022202
18. Wu, B.-I., W. Wang, J. Pacheco, X. Chen, T. M. Grzegorczyk, and J. Kong, "A study of using metamaterials as antenna substrate to enhance gain," Progress In Electromagnetics Research, Vol. 51, 295-328, 2005.
doi:10.2528/PIER04070701
19. Mok, W. C., S. H. Wong, K. M. Luk, and K. F. Lee, "Single-layer single-patch dual-band and triple-band patch antennas," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 8, 4341-4344, Aug. 2013.
doi:10.1109/TAP.2013.2260516
20. Li, P., K. M. Luk, and K. L. Lau, "A dual-feed dual-band L-probe patch antenna," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 7, 2321-2323, Jul. 2005.
doi:10.1109/TAP.2005.850761
21. Joshi, M. P. and V. J. Gond, "Design and analysis of microstrip patch antenna for WLAN and vehicular communication," Progress In Electromagnetics Research C, Vol. 97, 163-176, 2019.
doi:10.2528/PIERC19090201
22. Mayuri, P., N. D. Rani, N. B. Subrahmanyam, and B. T. Madhav, "Design and analysis of a compact reconfigurable dual band notched UWB antenna," Progress In Electromagnetics Research C, Vol. 98, 141-153, 2020.
doi:10.2528/PIERC19082903
23. Abdelaziz, A., "Bandwidth enhancement of microstrip antenna," Progress In Electromagnetic Research, Vol. 63, 311-317, 2006.
doi:10.2528/PIER06053001
24. Hossein, M. and J. Shahrokh, "Enhanced bandwidth of shorted patch antennas using folded-patch techniques," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 198-201, 2013.
25. Cao, W.-Q. and W. Hong, "Bandwidth and gain enhancement for probe-fed CP microstrip antenna by loading with parasitical patches," Progress In Electromagnetics Research Letters, Vol. 61, 47-53, 2016.
doi:10.2528/PIERL16031305
26. Chen, Z., Y.-L. Ban, J.-H. Chen, J. L.-W. Li, and Y.-J. Wu, "Bandwidth enhancement of LTE/WWAN printed mobile phone antenna using slotted ground structure," Progress In Electromagnetics Research, Vol. 129, 469-483, 2012.
doi:10.2528/PIER12061203
27. Mitra, D., D. Das, and S. R. B. Chaudhuri, "Bandwidth enhancement of microstrip line and CPW-fed asymmetrical slot antennas," Progress In Electromagnetics Research Letters, Vol. 32, 69-79, 2012.
doi:10.2528/PIERL12032204
28. Kim, C. S., J. S. Park, D. Aha, and J. B. Lim, "A novel I-D periodic defected ground structures for planar circuits," IEEE Microwave and Guided Wave Letters, Vol. 10, No. 4, 131-133, Apr. 2000.
doi:10.1109/75.846922
29. Garg, R., I. Bahl, and M. Bozzi, Micostrip Lines and Slot Lines, 3rd Ed., Chapter 6, 287-341, Artech House, 2013.
30. Khandelwal, M. K., B. K. Kanaujia, and S. Kumar, "Defected ground structure: Fundamentals, analysis, and applications in modern wireless trends," International Journal of Antennas and Propagation, Vol. 2017, Article ID 2018527, 22 pages, Feb. 2017.
31. Guha, D., 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, 402-405, Sept. 2006.
doi:10.1109/LAWP.2006.880691
32. Wang, P. A., 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, 298-301, Apr. 2011.
33. Khandelwal, M. K., 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, 943-953, Sept. 2016.
doi:10.1017/S1759078715000288
34. Karim, M. N. A., M. K. A. Rahim, H. A. Majid, O. Ayop, M. Abu, and F. Zubir, "Log periodic fractal koch antenna for UHF band applications," Progress In Electromagnetics Research, Vol. 100, 201-218, 2010.
doi:10.2528/PIER09110512
35. Li, D. and J.-F. Mao, "Multiband multimode arched bow-shaped fractal helix antenna," Progress In Electromagnetics Research, Vol. 141, 47-78, 2013.
doi:10.2528/PIER13050903
36. Waqas, M., Z. Ahmed, and M. B. Ihsan, "Multiband Sierpinski fractal antenna," IEEE 13th International Multi-topic Conference, Islamabad, Jul. 1-6, 2009.
37. Jibhkate, N. S. and P. L. Zade, "A compact multiband plus shape CPW fed fractal antenna for wireless application," International Conference on Green Engineering and Technologies, 1-5, Coimbatore, India, 2016.
38. Lopes, M., M. N. Aik, and A. Dessai, "Design and simulation of frequency recongurable microstrip patch antenna for C band and X band applications," International Conference on Computing, Communication, Control and Automation, 827-831, Pune, India, 2017.
39. Bukkawar, S. and V. Ahmed, "Square shaped fractal antenna for multiband applications," International Conference on Smart City and Emerging Technology, 1-4, Mumbai, 2018.
40. Kushwaha, N. and R. Kumar, "Design of slotted ground hexagonal microstrip patch antenna and gain improvement with FSS screen," Progress In Electromagnetics Research B, Vol. 51, 177-199, 2013.
doi:10.2528/PIERB13031604
41. Desai, A., T. K. Upadhyaya, R. Patel, S. Bhatt, and P. Mankodi, "Wideband high gain fractal antenna for wireless applications," Progress In Electromagnetics Research Letters, Vol. 74, 125-130, 2018.
doi:10.2528/PIERL18011504
42. Armin, B. and H. Shlomo, Fractals in Science, Chapter 1, Springer Verling, Berlin, 1991.
43. Abraham, J., "Investigations on multiband microstrip antennas and arrays for wireless communication applications,", Ph.D. dissertation, Chapter 3, School of Technology and Applied Science, M G University, 2018.