1. Wang, T., G. Li, J. Ding, Q. Miao, J. Li, and Y. Wang, "5G spectrum: Is china ready?," IEEE Communications Magazine, Vol. 53, No. 7, 58-65, 2015.
doi:10.1109/MCOM.2015.7158266
2. Li, Q. C., H. Niu, A. T. Papathanassiou, and G. Wu, "5G network capacity: Key elements and technologies," IEEE Vehicular Technology Magazine, Vol. 9, No. 1, 71-78, 2014.
doi:10.1109/MVT.2013.2295070
3. Liu, P., Y. Zou, B. Xie, X. Liu, and B. Sun, "Compact cpw-fed tri-band printed antenna with meandering split-ring slot for WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1242-1244, 2012.
4. Zhai, H., Z. Ma, Y. Han, and C. Liang, "A compact printed antenna for triple-band WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 65-68, 2013.
doi:10.1109/LAWP.2013.2238881
5. Li, L., X. Zhang, X. Yin, and L. Zhou, "A compact triple-band printed monopole antenna for WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 1853-1855, 2016.
doi:10.1109/LAWP.2016.2539358
6. Liu, Y.-W., Y.-J. Lu, and P. Hsu, "Harmonic suppressed slot loop antenna fed by coplanar waveguide," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 1292-1295, 2014.
doi:10.1109/LAWP.2014.2335194
7. Pan, G., Y. Li, Z. Zhang, and Z. Feng, "A compact wideband slot-loop hybrid antenna with a monopole feed," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 7, 3864-3868, 2014.
doi:10.1109/TAP.2014.2320535
8. Tan, M.-T. and B.-Z. Wang, "A compact dual-band dual-polarized loop-slot planar antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 1742-1745, 2015.
doi:10.1109/LAWP.2015.2421731
9. 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, 2015.
doi:10.1109/LAWP.2014.2376693
10. Bakariya, P. S., S. Dwari, M. Sarkar, and M. K. Mandal, "Proximity-coupled microstrip antenna for bluetooth, WiMAX, and WLAN applications," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 755-758, 2015.
doi:10.1109/LAWP.2014.2379611
11. Boopathi Rani, R. and S. K. Pandey, "ELC metamaterial based cpw-fed printed dual-band antenna," Microwave and Optical Technology Letters, Vol. 59, No. 2, 304-307, 2017.
doi:10.1002/mop.30292
12. Huang, H., Y. Liu, S. Zhang, and S. Gong, "Multiband metamaterial-loaded monopole antenna for WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 662-665, 2015.
doi:10.1109/LAWP.2014.2376969
13. Thomas, K. G. and M. Sreenivasan, "Compact triple band antenna for WLAN/WiMAX applications," Electronics Letters, Vol. 45, No. 16, 811-813, 2009.
doi:10.1049/el.2009.1658
14. Liu, S., W. Wu, and D.-G. Fang, "Wideband monopole-like radiation pattern circular patch antenna with high gain and low cross-polarization," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 5, 2042-2045, 2016.
doi:10.1109/TAP.2016.2536418
15. Duan, W., X. Y. Zhang, Y.-M. Pan, J.-X. Xu, and Q. Xue, "Dual-polarized filtering antenna with high selectivity and low cross polarization," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 10, 4188-4196, 2016.
doi:10.1109/TAP.2016.2594818
16. Gautam, A. K., L. Kumar, B. K. Kanaujia, and K. 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, 2016.
doi:10.1109/TAP.2015.2513099
17. Zheng, M., H. Wang, and Y. Hao, "Internal hexa-band folded monopole/dipole/loop antenna with four resonances for mobile device," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 6, 2880-2885, 2012.
doi:10.1109/TAP.2012.2194687
18. Xu, H., H. Wang, S. Gao, H. Zhou, Y. Huang, Q. Xu, and Y. Cheng, "A compact and low-profile loop antenna with six resonant modes for LTE smartphone," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 9, 3743-3751, 2016.
doi:10.1109/TAP.2016.2582919
19. Chen, Y., W.-J. Lu, L. Zhu, and H.-B. Zhu, "Square loop antenna under even-mode operation: Modelling, validation and implementation," International Journal of Electronics, Vol. 104, No. 2, 271-285, 2017.
doi:10.1080/00207217.2016.1196753
20. Chen, Y., W.-J. Lu, L. Zhu, and H.-B. Zhu, "Square loop antenna under even-mode operation: Modelling, validation and implementation," International Journal of Electronics, Vol. 104, No. 2, 271-285, 2017.
doi:10.1080/00207217.2016.1196753
21. Chen, Z. N., N. Yang, Y.-X. Guo, and M. Y. W. Chia, "An investigation into measurement of handset antennas," IEEE Transactions on Instrumentation and Measurement, Vol. 54, No. 3, 1100-1110, 2005.
doi:10.1109/TIM.2005.847242