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METAL-COVERED HANDSET WITH LTE MIMO, WI-FI MIMO, AND GPS ANTENNAS

By J. Kurvinen, A. Lehtovuori, J. Mai, C. Wang, and V. Viikari

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Abstract:
Current phones include more metal than earlier, which deteriorates the performance of antennas. This paper presents the first complete antenna set designed for a modern handset with a full metal back cover. 4G, Wi-Fi, and GPS antennas are integrated into the metallic side frame of the device in a realistic model. The designed antennas are either capacitive coupling elements with reactive loads or slot antennas. Fixed matching circuits are used to improve total efficiency. The passive implementation enables the use of carrier aggregation (CA) to increase the data rates, and includes also the multiple-input multiple-output (MIMO) operation for 4G and Wi-Fi. The designed antennas cover frequency bands 704--960 MHz, 1.56--1.61 GHz, 1.71--2.69 GHz, 2.4--2.484 GHz, and 5.15--5.875 GHz, producing in measurements a good agreement with simulation results.

Citation:
J. Kurvinen, A. Lehtovuori, J. Mai, C. Wang, and V. Viikari, "Metal-Covered Handset with LTE MIMO, Wi-Fi MIMO, and GPS Antennas," Progress In Electromagnetics Research C, Vol. 80, 89-101, 2018.
doi:10.2528/PIERC17082303

References:
1. Ban, Y. L., Y. F. Qiang, Z. Chen, K. Kang, and J. H. Guo, "A dual-loop antenna design for hepta-bandWWAN/LTE metal-rimmed smartphone applications," IEEE Trans. Antennas Propag., Vol. 63, No. 1, 48-58, Jan. 2015.
doi:10.1109/TAP.2014.2368573

2. Stanley, M., Y. Huang, H. Wang, S. S. Aljaafreh, Q. Xu, and L. Xing, "LTE MIMO antenna using unbroken metallic rim and non resonant CCE element," Proc. 10th Eur. Conf. on Antennas Propag. (EuCAP), 1-4, Davos, Switzerland, Apr. 2016.

3. Hsu, C. K. and S. J. Chung, "Compact multiband antenna for handsets with a conducting edge," IEEE Trans. Antennas Propag., Vol. 63, No. 11, 5102-5107, Nov. 2015.
doi:10.1109/TAP.2015.2473657

4. Ban, Y. L., Y. F. Qiang, G. Wu, H. Wang, and K. L. Wong, "Reconfigurable narrow-frame antenna for LTE/WWAN metal-rimmed smartphone applications," IET Microw. Antennas Propag., Vol. 10, No. 10, 1092-1100, Jul. 2016.
doi:10.1049/iet-map.2015.0610

5. Lian, J. W., Y. L. Ban, Y. L. Yang, L. W. Zhang, C. Y. D. Sim, and K. Kang, "Hybrid multi-mode narrow-frame antenna for WWAN/LTE metal-rimmed smartphone applications," IEEE Access, Vol. 4, 3991-3998, Jul. 2016.

6. Lee, D., W. C. Choi, J. Ahn, and Y. J. Yoon, "A simple monopole antenna for hepta-band LTE/WWAN metal-framed mobile phone," Proc. Int. Symp. Antennas Propag. (ISAP), 1-3, Hobart, Australia, Apr. 2015.

7. Chen, H. and A. Zhao, "LTE antenna design for mobile phone with metal frame," IEEE Antennas Wireless Propag. Lett., Vol. 15, 1462-1465, Dec. 2015.

8. Qu, L., H. Lee, H. Shin, M. G. Kim, and H. Kim, "MIMO antennas using controlled orthogonal characteristic modes by metal rims," IET Microw. Antennas Propag., Vol. 11, No. 7, 1009-1015, Jun. 2017.
doi:10.1049/iet-map.2016.0995

9. Stanley, M., Y. Huang, H. Wang, H. Zhou, Z. Tian, and Q. Xu, "A novel reconfigurable metal rim integrated open slot antenna for octa-band smartphone applications," IEEE Trans. Antennas Propag., Vol. 65, No. 7, 3352-3363, Jul. 2017.
doi:10.1109/TAP.2017.2700084

10. Yang, Y., Z. Zhao, W. Yang, Z. Nie, and Q. H. Liu, "Compact multimode monopole antenna for metal-rimmed mobile phones," IEEE Trans. Antennas Propag., Vol. 65, No. 5, 2297-2304, May 2017.
doi:10.1109/TAP.2017.2679059

11. Son, T. and Y. Jo, "Wideband mobile MIMO antenna for the metal cover phone," Proc. IEEE Region 10 Conf. (TENCON), 1-3, Macao, China, Nov. 2015.

12. Wu, C. Y., Y. L. Kuo, and K. C. Lin, "Low-profile tunableWWAN antenna for whole-metal-covered mobile phone applications," Proc. Int. Symp. Antennas Propag. (ISAP), 275-276, Kaohsiung, Taiwan, Dec. 2014.

13. Zhong, J., R. M. Edwards, L. Ma, and X.-W. Sun, "Multiband slot antennas for metal back cover mobile handsets," Progress In Electromagnetics Research Letters, Vol. 39, 115-126, Apr. 2013.
doi:10.2528/PIERL13021901

14. Tan, Y. C. M., N. G. G. Hong, and Y. S. R. Tay, "Tuning of LTE main antenna using flexible tunable LC resonant circuitry," Proc. 11th Eur. Conf. Antennas Propag. (EuCAP), 3082-3085, Paris, France, Mar. 2017.

15. Tan, Y. C. M., N. G. G. Hong, and Y. S. R. Tay, "A tunable LTE main antenna solution for metallic cover mobile phone," Proc. 11th Eur. Conf. Antennas Propag. (EuCAP), 2969-2972, Paris, France, Mar. 2017.

16. Kumar, P. and J. Thakur, "Antenna for metal body mobile devices," Proc. IEEE Indian Antenna Week (IAW), 75-77, Madurai, India, Jun. 2016.

17. Chang, C. K., W. J. Liao, and C. C. Tsai, "Metal body-integrated open-end slot-antenna designs for handset LTE uses," IEEE Trans. Antennas Propag., Vol. 64, No. 12, 5436-5440, Dec. 2016.
doi:10.1109/TAP.2016.2606544

18. Wu, Z., H. Wang., P. Chen, W. Shen, and G. Yang, "A compact GPS/WLAN antenna design for mobile terminal with full metal housing," Progress In Electromagnetics Research C, Vol. 64, 169-177, Jun. 2016.
doi:10.2528/PIERC16040804

19. Chen, P., P. Wang, Y. Yu, and G. Yang, "A compact LTE antenna design for mobile device with full metal housing," Proc. Int. Workshop Antenna Technology (iWAT), 23-24, Cocoa Beach, FL, USA, Feb.–Mar. 2016.

20. Villanen, J., J. Ollikainen, O. Kivekas, and P. Vainikainen, "Coupling element based mobile terminal antenna structures," IEEE Trans. Antennas Propag., Vol. 54, No. 7, 2142-2153, Jul. 2006.
doi:10.1109/TAP.2006.877162

21. Valkonen, R., M. Kaltiokallio, and C. Icheln, "Capacitive coupling element antennas for multistandard mobile handsets," IEEE Trans. Antennas Propag., Vol. 61, No. 5, 2783-2791, Feb. 2013.
doi:10.1109/TAP.2013.2244838

22. CST MICROWAVE STUDIO R, "3D electromagnetic simulation software,", CST Computer Simulation Technology AG, Darmstadt, Germany, Online Available: https://www.cst.com/products/cstmws/.

23. Optenni Lab., "Matching circuit generation and antenna analysis software,", Optenni Ltd., Espoo, Finland, Online Available: http://www.optenni.com/.

24. Rasilainen, K., A. Lehtovuori, and V. Viikari, "LTE handset antenna with closely-located radiators, low-band MIMO, and high efficiency," Proc. 11th Eur. Conf. Antennas Propag. (EuCAP), 3074-3078, Paris, France, Mar. 2017.

25. Bao, Z., Z. Nie, and X. Zong, "A novel broadband dual-polarization antenna utilizing strong mutual coupling," IEEE Trans. Antennas Propag., Vol. 62, No. 1, 450-454, Jan. 2014.
doi:10.1109/TAP.2013.2287010

26. Peng, C. M., I. F. Chen, C. C. Hung, S. M. Shen, C. T. Chien, and C. C. Tseng, "Bandwidth enhancement of internal antenna by using reactive loading for penta-band mobile handset application," IEEE Trans. Antennas Propag., Vol. 59, No. 5, 1728-1733, Mar. 2011.
doi:10.1109/TAP.2011.2122232

27. Zhao, L. and K. L. Wu, "A decoupling technique for four-element symmetric arrays with reactively loaded dummy elements," IEEE Trans. Antennas Propag., Vol. 62, No. 8, 4416-4421, Jun. 2014.
doi:10.1109/TAP.2014.2326425

28. Ilvonen, J., R. Valkonen, J. Holopainen, and V. Viikari, "Design strategy for 4G handset antennas and a multiband hybrid antenna," IEEE Trans. Antennas Propag., Vol. 62, No. 4, 1918-1927, Jan. 2014.
doi:10.1109/TAP.2014.2300131

29. Zhai, G., Z. N. Chen, and X. Qing, "Enhanced isolation of a closely spaced four-element MIMO antenna system using metamaterial mushroom," IEEE Tran. Antennas Propag., Vol. 63, No. 8, 3362-3370, Aug. 2015.
doi:10.1109/TAP.2015.2434403

30. Thummaluru, S. R. and R. K. Chaudhary, "Mu-negative metamaterial filter-based isolation technique for MIMO antennas," Electronics Lett., Vol. 53, No. 10, 644-646, May 2017.
doi:10.1049/el.2017.0809

31. Premix, "PREPERM R L335 datasheet,", Premix Oy, Rajam¨aki, Finland, Online Available: http://www.premixgroup.com/wp-content/uploads/2015/02/preperm l335 tds.pdf.

32. Blanch, S., J. Romeu, and I. Corbella, "Exact representation of antenna system diversity performance from input parameter description," Electronics Lett., Vol. 39, No. 9, 705-707, May 2003.
doi:10.1049/el:20030495


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