In this paper a new simple VHF-LB vest antenna is proposed, simulated, fabricated and tested. The simulation results for various user's positions such as standing, kneeling and prone on the ground are obtained and compared with conventional whip antenna mounted on mobile unit. It is shown that the proposed antenna outperforms the whip antenna in terms of gain and body energy absorption. The measurements results of proposed vest antenna confirm the simulation results.
2. Hayashida, S., T. Tanaka, H. Morishita, Y. Koyanagi, and K. Fujimoto, "Built-in half size folded dipole antenna for hadsets," IEEE Antennas and Propagation Int. Symp., 2759-2762, 2004.
3. Gianvittorio, J. P. and Y. Rahmat-Samii, "Fractal antennas: A novel antenna miniaturization technique ," IEEE Antennas and Propagation Magazine, Vol. 44, 20-36, 2002.
4. Ali, M. and S. Stuchly, "A meander-line bow-tie antenna," IEEE Antennas and Propagation Int. Symp., 1566-1569, 1996.
5. Tronquo, A., H. Rogier, C. Hertleer, and L. Van Langenhove, "Robust planar textile antenna for wireless body LANs operating in 2.45GHz ISM band," Electronics Letters, Vol. 42, No. 3, Feb. 2006.
6. Klemm, M., I. Z. Kovcs, G. F. Pedersen, and G. Toster, "Novel small-size directional antenna for UWB WBAN/WPAN applications," IEEE Trans. on Antennas and Propagation, Vol. 53, No. 12, 3884-3896, Dec. 2005.
7. Merenda, J. T., "Digital Wideband Small Antenna Systems ," BAE Systems, Jul. 2006.
8. Merenda, J. T., Crossed-loop Radiation Synthesizer System, US Patent, 6680710, Jan. 2004.
9. Merenda , J. T., Radiation Synthesizer Feed Configuration, US Patent, 6606063, Aug, 2003.
10. Adams , R. C., Wearable Directional Antenna, US Patent, 6995723, Feb. 2006.
11. Adams, R. C., Ultra-broadband Antenna Incorporated into Garment, US Patent, 6972725, Dec. 2005.
12. Adams, R. C., R. J. O'Neil, J. E. Lebaric, and T. R. Emo, Integrated Man-prortable Wearable Antenna System, US Patent, 7002526, Feb. 2006.
13. Coleman, C. M., E. J. Rothwell, J. E. Ross, and L. L. Nagy, "Self-structuring antennas," IEEE Antennas and Propagation Magazine, Vol. 44, 11-23, 2002.
14. Fenner, R. A., Bandwidth extension of a body worn antenna vest, M.S. Thesis, Michigan State University, 2007.
15. Klemm, M. and G. Troester, "EM energy absorption in the human body tissues due to UWB antennas," Progress In Electromagnetics Research, Vol. 62, 261-280, 2006.
16. Chen, Z. N., Antennas for Portable Devices, John Wiley & Sons Ltd, 2007.
17. Hirata, A., K. Shirai, and O. Fujiwara, "On averaging mass of SAR correlating with temperature elevation due to a dipole antenna," Progress In Electromagnetics Research, Vol. 84, 221-237, 2008.
18. Kouveliotis, N. K. and C. N. Capsalis, "Prediction of the SAR level induced in a dielectric sphere by a thin wire dipole antenna," Progress In Electromagnetics Research, Vol. 80, 321-336, 2008.
19. Liu , Y., Z. Liang, and Z. Q. Yang, "Computation of electromagnetic dosimetry for human body using parallel FDTD algorithm combined with interpolation technique," Progress In Electromagnetics Research, Vol. 82, 95-107, 2008.
20. Kim, J. and Y. Rahmat-Samii, "Implanted antennas inside a human body: Simulations, designs, and characterizations," IEEE Trans. on Microwave Theory and Techniques, Vol. 52, No. 8, Aug. 2008.
21. Yoshida, K., A. Hirata, Z. Kawasaki, and T. Shiozawa, "Human head modeling for handset antenna design at 5GHz band," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 3, 401-411, 2005.
22. Pino, A. G., M. Arias, M. G. Sanchez, I. Cuinas, and A. A. Alonso, "Determination of safety volumes for mediumfrequency emissions under standard limits of human exposure," Journal of Electromagnetic Waves and Applications, Vol. 17, No. 11, 1605-1611, 2003.
23. Rosen, A., M. A. Stuchly, and A. Vander Vorst, "Applications of RF/microwaves in medicine," IEEE Trans. on Microwave Theory and Techniques, Vol. 50, No. 3, 963-974, Mar. 2003.
24. Christ, A. and N. Kuster, "Differences in RF energy absorption in the heads of adults and children," Bioelectromagnetics, Sep.2005.
25. Ebrahimi-Ganjeh, M. A. and A. R. Attari, "Interaction of dual band helical and PIFA handset antennas with human head and hand," Progress In Electromagnetics Research, Vol. 77, 225-242, 2007.
26. Kuo, L. C., Y. C. Kan, and H. R. Chuang, "Analysis of a 900/1800 MHz dual-band gap loop antenna on a handset with proximate head and hand model," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 1, 107-122, 2007.
27. Kouveliotis, N. K., P. J. Papakanellos, E. D. Nanou, N. I. Sakka, V. S. G. Tsiafkis, and C. N. Capsalis, "Correlation between SAR, SWR and distance of mobile terminal antenna in front of a human phantom: Theoretical and experimental validation," Journal of Electromagnetic Waves and Applications, Vol. 17, No. 11, 1561-1581, 2003.
28. Keshvari, J. and S. Lang, "Comparison of radio frequency energy absorption in ear and eye region of children and adults at 900, 1800 and 2450 MHz," Physics in Medicine and Biology., Vol. 50, 4355-4369, 2005.
29. Kouveliotis, N. K., S. C. Panagiotou, P. K. Varlamos, and C. N. Capsalis, "Theoretical approach of the interaction between a human head model and a mobile handset helical antenna using numerical methods," Progress In Electromagnetics Research, Vol. 65, 309-327, 2006.
30. ICNIRP, "Guidelines for limiting exposure to time-varying electric, magnetic and electromagnetic fields (up to 300 GHz)," Health Phys., Vol. 74, 494-522, 1998.
31. ANSI C95.1-1982, American national standard safety levels with respect to human exposure to radiofrequency electromagnetic fields, 300 kHz to 100GHz, The Institute of Electrical and Electronics Engineers, Inc., 345 East 47th Street, NY 10017, New York.
32. Human exposure to electromagnetic fields: High frequencies (10 kHz to 300 GHz), CENELEC, CENELEC Central Secretariat: Rue de Stassart 35, B-1050, Brussels, Belgium, Jan. 1995 .