1. Li, P., J. Pan, D. Yang, Z.-P. Nie, and J. Xing, "A novel quad-band (GSM850 to IEEE 802.11a) PIFA for mobile handset," Progress In Electromagnetics Research, Vol. 137, 539-549, 2013.
2. Soh, P. J., S. J. Boyes, G. A. E. Vandenbosch, Y. Huang, and S. L. Ooi, "On-body characterization of dual-band all-textile PIFA," Progress In Electromagnetics Research, Vol. 129, 517-539, 2012.
3. Lee, M.-J., Y.-S. Kim, and Y. Sung, "Frequency reconfigurable planar inverted-F antenna (PIFA) for cell-phone applications," Progress In Electromagnetics Research C, Vol. 32, 27-41, 2012.
4. Yu, H.-Z. and Q.-X. Chu, "A broadband PIFA with zeroth-order resonator loading," Progress In Electromagnetics Research Letters,, Vol. 21, 67-77, 2011.
5. Wong, H., K. M. Luk, and C. H. Chan, "Small antennas in wireless communications," Proceedings of the IEEE, Vol. 100, 2109-2121, 2012.
doi:10.1109/JPROC.2012.2188089
6. Balanis, C. A., Antenna Theory: Analysis and Design, 3rd edition, Wiley, New York, 2005.
7. Finkenzeller, K., RFID Handbook, Radio-frequency Identification Fundamentals and Applications, 2nd edition, Wiley, New York, 2004.
8. Tsai, C.-L., "A coplanar-strip dipole antenna for broad-band circular polarization operation," Progress In Electromagnetics Research, Vol. 121, 141-157, 2011.
doi:10.2528/PIER11082407
9. Rezaeieh, S. A. and M. Kartal, "A new triple band circularly polarized square slot antenna design with crooked T and F-shape strips for wireless applications," Progress In Electromagnetics Research, Vol. 121, 1-18, 2011.
doi:10.2528/PIER11081506
10. Joseph, R. and T. Fukusako, "Bandwidth enhancement of circularly polarized square slot antenna," Progress In Electromagnetics Research B, Vol. 29, 233-250, 2011.
doi:10.2528/PIERB11030406
11. Tsai, C.-L., "A coplanar-strip dipole antenna for broadband circular polarization operation," Progress In Electromagnetics Research, Vol. 121, 141-157, 2011.
doi:10.2528/PIER11082407
12. Sze, J.-Y. and S.-P. Pan, "Design of broadband circularly polarized square slot antenna with a compact size," Progress In Electromagnetics Research, Vol. 120, 513-533, 2011.
13. Sylvain, P., S. Robert, and K. Georges, "Planar inverted F antenna circularly polarized for RFID applications," 2012 IEEE Antennas and Propagation Society International Symposium (APSURSI), 1-2, Jul. 2012.
14. Wen, L. H., Y. Z. Yin, and Y. Wang, "A novel PIFA antenna for broadband circular polarization," Microw. Opt. Technol. Lett., Vol. 53, 204-208, 2011.
doi:10.1002/mop.25633
15. Zhang, Y., Z. Ye, and C. Liu, "Estimation of fading coefficients in the presence of multipath propagation," IEEE Trans. on Antennas and Propag., Vol. 57, No. 7, 2220-2224, 2009.
doi:10.1109/TAP.2009.2021973
16. Tang, Z. and A. S. Mohan, "Characterize the indoor multipath propaga-tion for MIMO communications," Asia-Pacific Conference Proceedings, APMC 2005, Vol. 4, 4-7, China, Dec. 2005.
17. Gesbert, D., M. Shafi, D. S. Shiu, P. Smith, and A. Naguib, "From theory to practice: An overview of MIMO space-time coded wireless systems," IEEE J. Sel. Areas Commun., Vol. 21, No. 3, 281-302, Apr. 2003.
doi:10.1109/JSAC.2003.809458
18. Jensen, M. A. and J. W. Wallace, "A review of antennas and propagation for MIMO wireless communications," IEEE Trans. on Antennas and Propag., Vol. 52, No. 11, 2810-2824, Nov. 2004.
doi:10.1109/TAP.2004.835272
19. Sarrazin, J., Y. Mahe, S. Avrillon, and S. Toutain, "Four co-located antennas for MIMO systems with a low mutual coupling using mode confinement," IEEE Antennas and Propagation Society International Symposium, AP-S 2008, 1-4, San Diego, CA, Jul. 2008.
20. Fletcher, P. N., M. Dean, and A. R. Nix, "Mutual coupling in multi-element array antennas and its influence on MIMO channel capacity," Electron. Lett., Vol. 39, 342-344, Feb. 2003.
doi:10.1049/el:20030219
21. Diallo, A., C. Luxey, P. L. Thuc, and G. Kossiavas, "Study and reduction of the mutual coupling between two mobile phone PIFAs operating in the DCS1800 and UMTS bands," IEEE Trans. on Antennas and Propag., Vol. 54, No. 11, 3063-3074, Nov. 2006.
doi:10.1109/TAP.2006.883981
22. Diallo, A., C. Luxey, P. L. Thuc, and G. Kossiavas, "An efficient two-port antenna-system for GSM/DCS/UMTS multi-mode mobile phones," Electron. Lett., Vol. 43, No. 7, 369-370, Mar. 2007.
doi:10.1049/el:20073911
23. Diallo, A., C. Luxey, P. L. Thuc, R. Staraj, and G. Kossiavas, "Enhanced two-antenna structures for UMTS diversity terminals," IET Microw., Antennas Propag., Vol. 2, No. 1, 93-101, Feb. 2008.
doi:10.1049/iet-map:20060220
24. Luxey, C. and D. Manteuffel, "Highly-efficient multiple antennas for MIMO-systems," 2010 International Workshop on Antenna Technology (iWAT), 1-3, Mar. 2010.
doi:10.1109/IWAT.2010.5464856
25. Hsu, C. C., K. H. Lin, H. L. Su, and C. Y. Wu, "Design of MIMO antennas with strong isolation for portable applications," IEEE Antennas and Propagation Society International Symposium, APSURSI'09, 1-4, Charleston, SC, Jun. 2009.
26. Makinen, R., V. Pynttari, J. Heikkinen, and M. Kivikoski, "Improve-ment of antenna isolation in hand-held devices using miniaturized electromagnetic band-gap structures," Microw. Opt. Technol. Lett., Vol. 49, No. 10, 2508-2513, Oct. 2007.
doi:10.1002/mop.22761
27. Chen, S. C., Y. S. Wang, and S. J. Chung, "A decoupling technique for increasing the port isolation between two strongly coupled antennas," IEEE Trans. on Antennas and Propag., Vol. 56, No. 12, 3650-3658, Dec. 2008.
doi:10.1109/TAP.2008.2005469
28. Lai, X. Z., Z. M. Xie, and X. L. Cen, "Design of dual circularly polarized antenna with high isolation for RFID application," Progress In Electromagnetics Research, Vol. 139, 25-39, 2013.
29. Yao, Y., X. Wang, and X. D. Chen, "Novel diversity/MIMO PIFA antenna with broadband circular polarization for multimode satellite navigation," IEEE Trans. on Antennas Propag. Lett., Vol. 11, 65-68, 2012.
30. Liu, Z. Q., Z. Qian, Z. P. Han, and W. Ni, "Design of a wideband dual circularly polarized microstrip antenna," 2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), Vol. 3, 1-4, 2012.
31. Salonen, I. and P. Vainikainen, "Estimation of signal correlation in antenna arrays," Proc. 12th Int. Symp. Antennas., Vol. 2, 383-386, 2002.
32. Blanch, I., J. Romeu, and I. Corbella, "Exact representation of antenna system diversity performance from input parameter description," Electron. Lett., Vol. 39, 705-707, 2003.
doi:10.1049/el:20030495