1. Bhatti, R.-A., Y.-S. Shin, N.-A. Nguyen, and S.-O. Park, "Design of a novel multiband planar inverted-F antenna for mobile terminals," Proceedings IEEE IWAT, 226-229, 2008.
2. Nashaat, D. M., H. A. Elsadek, and H. Ghali, "Single feed compact quad-band PIFA antenna for wireless communication applications," IEEE Trans. Antennas Propag., Vol. 53, No. 8, 2631-2635, Aug. 2005.
doi:10.1109/TAP.2005.851872
3. Lin, D.-B., I-T. Tang, and M.-Z. Hong, "A compact quad-band PIFA by tuning the defected ground structure for mobile phones," Progress In Electromagnetics Research B, Vol. 24, 173-189, 2010.
doi:10.2528/PIERB10070608
4. Saidatul, N. A., A. A. H. Azremi, R. B. Ahmad, P. J. Soh, and F. Malek, "Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application," Progress In Electromagnetics Research B, Vol. 14, 127-148, 2009.
doi:10.2528/PIERB09030802
5. Ciais, P., R. Staraj, G. Kossiavas, and C. Luxey, "Compact internal, multiband antenna for mobile phone and WLAN standards," Electron. Lett., Vol. 40, No. 15, Jul. 2004.
6. Han, M.-S. and H.-T. Kim, "Compact five band internal antenna for mobile phone," IEEE Antennas and Propagation Society International Symposium, 4381-4384, Jul. 2006.
7. Anguera, J., A. Cabedo, C. Picher, I. Sanz, M. Ribó and C. Puente, "Multiband handset antennas by means of groundplane modification," IEEE Antennas and Propagation Society International Symposium, 1253-1256, Jun. 2007.
8. Guo, Y.-X., I. Ang, and M. Y. W. Chia, "Compact internal multiband antennas for mobile handsets," IEEE Antennas Wireless Propag. Lett., Vol. 2, 143-146, 2003.
9. Park, H., K. Chung, and J. Choi, "Design of a planar inverted-F antenna with very wide impedance bandwidth," IEEE Microw. Wirelss Compon. Lett., Vol. 16, No. 3, 113-115, Mar. 2006.
doi:10.1109/LMWC.2006.869866
10. Lin, D.-B., I.-T. Tang, M.-Z. Hong, and H.-P. Lin, "A compact quad-band PIFA by using defected ground structure," IEEE Antennas and Propagation Society International Symposium, 4677-4680, Jun. 2007.
11. Kwak, W.-I., S.-O. Park, and J.-S. Kim, "A folded planar inverted-F antenna for GSM/DCS/Bluetooth triple-band application," IEEE Antennas Wireless Propag. Lett., Vol. 5, 18-21, Dec. 2006.
doi:10.1109/LAWP.2005.863617
12. Liang, J. and H. Y. D. Yang, "Varactor loaded tunable printed PIFA," Progress In Electromagnetics Research B, Vol. 15, 113-131, 2009.
doi:10.2528/PIERB09041108
13. Hua, R.-C., C.-F. Chou, S.-J. Wu, and T.-G. Ma, "Compact multiband planar monopole antennas for smart phone applications," IET Microwaves, Antennas & Propagation, Vol. 2, 473-481, Aug. 2008.
doi:10.1049/iet-map:20070163
14. Jaw, J.-L. and J.-K. Chen, "CPW-fed hook-shaped strip antenna for dual wideband operation," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 13, 1809-1818, 2008.
doi:10.1163/156939308786375136
15. Xiong, J.-P., L. Liu, X.-M.Wang, J. Chen, and Y.-L. Zhao, "Dual-band printed bent slots antenna for WLAN applications," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 11-12, 1509-1515, 2008.
doi:10.1163/156939308786390175
16. Mahatthanajatuphat, C., S. Saleekaw, and P. Akkaraekthalin, "A Rhombic patch monopole antenna with modified Minkowski fractal geometry for UMTS, WLAN, and mobile WiMAX application," Progress In Electromagnetics Research, Vol. 89, 57-74, 2009.
doi:10.2528/PIER08111907
17. Jang, B. C. and C. Y. Kim, "Internal antenna design for a triple band using an overlap of return loss," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 8, 1099-1108, 2007.
18. Wong, K.-L., G.-Y. Lee, and T.-W. Chiou, "A low-profile planar monopole antenna for multiband operation of mobile handsets," IEEE Trans. Antennas Propag., Vol. 51, 121-125, Jan. 2003.
doi:10.1109/TAP.2003.809044
19. Ge, Y., K. P. Essells, and T. S. Bird, "A spiral-shaped printed monopole antenna for mobile communications," IEEE Antennas and Propagation Society International Symposium, 3681-3684, Jul. 2006.
20. Liu, C.-S., C.-N. Chiu, and S.-M. Deng, "A compact disc-slit monopole antenna for mobile devices," IEEE Antennas Wireless Propag. Lett., Vol. 7, 251-254, 2008.
21. Jing, X., Z. Du, and K. Gong, "A compact multiband planar antenna for mobile handsets," IEEE Antennas Wireless Propag. Lett., Vol. 5, 343-345, Dec. 2006.
doi:10.1109/LAWP.2006.880690
22. Lin, C.-I. and K.-L. Wong, "Printed monopole slot antenna for internal multiband mobile phone antenna," IEEE Trans. Antennas Propag., Vol. 55, 3690-3697, Dec. 2007.
doi:10.1109/TAP.2007.910345
23. Wang, H. and M. Zheng, "Triple-band wireless local area network monopole antenna," IET Microwaves, Antennas & Propagation, Vol. 2, 367-372, Jun. 2008.
doi:10.1049/iet-map:20070120
24. Li, R., B. Pan, J. Laskar, and M. M. Tentzeris, "A compact broadband planar antenna for GPS, DCS-1800, IMT-2000, and WLAN applications," IEEE Antennas Wireless Propag. Lett., Vol. 6, 25-27, 2007.
doi:10.1109/LAWP.2006.890754
25. Zhang, G.-M., J. S. Hong, B.-Z. Wang, Q. Y. Qin, J. B. Mo, and D.-M. Wan, "A novel multi-folded UBW antenna fed by CPW," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 14, 2109-2119, 2007.
doi:10.1163/156939307783152911
26. Liu, W.-C. and H.-J. Liu, "Miniaturized asymmetrical CPW-fed meandered strip antenna for triple-band operation," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 8, 1089-1097, 2007.
27. Jamalpoo, R., J. Nourinia, and C. Ghobadi, "A wideband microstrip-fed monopole antenna for WiBro, WLAN, DMB and UWB applications," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 11-12, 1461-1468, 2008.
doi:10.1163/156939308786390274
28. Zhao, G., F.-S. Zhang, Y. Song, Z.-B. Weng, and Y.-C. Jiao, "Compact ring monopole antenna with double meander lines for 2.4/5 GHz dual-band operation," Progress In Electromagnetics Research, Vol. 72, 187-194, 2007.
doi:10.2528/PIER07031405
29. Yin, X.-C., C.-L. Ruan, S.-G. Mo, C.-Y. Ding, and J.-H. Chu, "A compact ultra-wideband microstrip antenna with multiple notches," Progress In Electromagnetics Research, Vol. 84, 321-332, 2008.
doi:10.2528/PIER08072801
30. Tung, H.-C. and Y.-C. Hsu, "Monopole antenna fed by a coaxial cable in slide phone for GSM/DCS/PCS operation," IEEE Antennas and Propagation Society International Symposium, 1-4, Jul. 2008.
31. Anguera, J., I. Sanz, A. Sanz, A. Condes, D. Gala, C. Puente, and J. Soler, "Enhancing the performance of handset antennas by means of ground plane design," IEEE International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials (IWAT 2006), New York, USA, Mar. 2006.
32. Cabedo, A., J. Anguera, C. Picher, M. Ribó, and C. Puente, "Multi-band handset antenna combining a PIFA, slots, and ground plane modes," IEEE Trans. Antennas Propag., Vol. 57, No. 9, 2526-2533, Sep. 2009.
doi:10.1109/TAP.2009.2027039
33. Anguera, J., I. Sanz, J. Mumbrú, and C. Puente, "Multi-band handset antenna with a parallel excitation of PIFA and slot radiators," IEEE Trans. Antennas Propag., Vol. 58, No. 2, 348-356, Feb. 2010.
doi:10.1109/TAP.2009.2038183