Progress In Electromagnetics Research M
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By A. Pladevall, C. Picher, A. Andujar, and J. Anguera

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Human body interaction is an important issue to take into account when designing handset antennas due to the effect that it has on the electromagnetic performance of the antenna. By means of electromagnetic simulation, three different antennas (a 1-meter length monopole and two small handset antennas) in three different situations (free-space, hand holding, and in pocket position) have been analysed at the FM band (88 MHz-108 MHz). Results prove that it is possible to predict the antenna behaviour in terms of quality factor (Q) by assessing the variations of the near electric field and the radiation efficiency in said environments. The estimated Q can be verified by calculating the Q using the input impedance. Results show that human body may improve the efficiency when the antennas become an extension of the human body.

A. Pladevall, C. Picher, A. Andujar, and J. Anguera, "Some Thoughts on Human Body Effects on Handset Antenna at the FM Band," Progress In Electromagnetics Research M, Vol. 19, 121-132, 2011.

1. Chuang, H. R., "Human operator coupling effects on radiation characteristics of a portable communication dipole antenna," IEEE Transactions on Antennas and Propagation, Vol. 42, No. 4, 556-560, Apr. 1994.

2. Jensen, M. A. and Y. Rahmat-Samii, "EM interaction of handset antennas and a human in personal communications," Proceedings of the IEEE, Vol. 83, No. 1, 7-17, Jan. 1995.

3. Okoniewski, M. and M. A. Stuchly, "A study of the handset antenna and human body interaction," IEEE Transactions on Microwave Theory and Techniques, Vol. 44, No. 10, 1855-1864, Oct. 1996.

4. Kildal, P. and C. Carlsson, "Comparison between head losses of 20 phones with external and built-in antennas measured in reverberation chamber," IEEE Antennas and Propagation Society International Symposium, Vol. 1, 436-439, 2002.

5. Boyle, K. R., Y. Yuan, and L. P. Lighthart, "Analysis of mobile phone antenna impedance variations with user proximity," IEEE Transactions on Antennas and Propagation, Vol. 5, No. 2, 364-372, Feb. 2007.

6. Al-Mously, S. I. and M. M. Abousetta, "A novel cellular handset design for an enhanced antenna performance and a reduced SAR in the human head," International Journal of Antennas and Propagation, Vol. 2008, Research Article, Hindawi Publishing Corporation, 2008.

7. Anguera, J., A. Camps, A. Andujar, and C. Puente, "Enhancing the robustness of handset antennas to finger loading effects," Electronics Letters, Vol. 45, No. 15, 770-771, Jul. 2009.

8. Verges, J., J. Anguera, C. Puente, and D. Aguilar, "Analysis of the human body on the radiation of FM handset antenna," Microwave and Optical Technology Letters, Vol. 51, No. 11, 2588-2590, Nov. 2009.

9. Arenas, J. J., J. Anguera, and C. Puente, "Balanced and single-ended handset antennas: Free space and human loading comparison," Microwave and Optical Technology Letters, Vol. 51, No. 9, 2248-2254, Sep. 2009.

10. Yu, W., S. Yang, C. L. Tang, and D. Tu, "Accurate simulation of the radiation performance of a mobile slide phone in a hand-head position," IEEE Antennas and Propagation Magazine, Vol. 52, No. 2, 168-177, Apr. 2010.

11. Stutzman, W. L. and G. A. Thiele, Antenna Theory and Design, 2nd Edition, John Wiley & Sons, 1998.

12. Anguera, J. and A. Perez, "Teoria d'antenes,", 2008 Creative Commons Deed, ISBN ISBN: 978-84-935665-4-8..

13. Yang, T., W. A. Davis, W. L. Stutzman, and M. C. Huynh, "Cellular-phone and hearing-aid interaction: An antenna solution," IEEE Antennas and Propagation Magazine, Vol. 50, No. 3, 51, Jun. 2008.

14. Anguera, J. and A. Sanz, "Wireless portable device including internal broadcast receiver,", Patent App. WO 2007/128340..

15. Anguera, J., D. Aguilar, J. Verges, M. Ribo, and C. Puente, "Handset antenna design for FM reception," IEEE Antennas and Propagation Society International Symposium, San Diego, California, USA, Jul.2008.

16. Aguilar, D., J. Anguera, M. Ribo, and C. Puente, "Small handset antenna for FM reception," Microwave and Optical Technology Letters, Vol. 50, No. 10, 2677-2683, Oct. 2008.

17. Best, S. R. and A. D. Yaghjian, "The lower bounds on Q for lossy electric and magnetic dipole antennas," IEEE Antennas and Wireless Propagation Letters, Vol. 3, 214-216, 2004.

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