volume | PIER Journals

2010-08-19

Mobile Antenna with Reduced Radiation Hazards Towards Human Head

Das Laila,

Dr. Das Laila

Department of Electronics

Cochin University of Science and Technology

India

Homepage

Sujith Raman,

Dr. Sujith Raman

Department of Electronics

Cochin University of Science and Technology

India

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Sreejith M Nair,

Dr. Sreejith M Nair

Department of Electronics

Cochin University of Science and Technology

India

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Chandroth K. Aanandan,

Dr. Chandroth K. Aanandan

Department of Electronics

Cochin University of Science and Technology

India

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Kesavath Vasudevan,

Professor Kesavath Vasudevan

Department of Electronics

Cochin University of Science & Technology

India

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Pezholil Mohanan

Professor Pezholil Mohanan

Department of Electronics

Cochin University of Science & Technology

India

Homepage

Progress In Electromagnetics Research Letters, Vol. 17, 39-46, 2010

doi:10.2528/PIERL10071202 | Google Scholar

Abstract

A Coplanar Wave guide (CPW) fed printed monopole antenna with reduced radiation hazard from a mobile handset is presented. The printed metal stripes in the back side of the monopole modify the far field pattern ideal for mobile handset. The antenna offers a bandwidth of 200 MHz when printed on a substrate of dielectric constant (εr) 4.4 and thickness 1.6 mm with an overall dimension of 42x31.7 mm². Experimental and simulation studies of the antenna radiation characteristics of the proposed antenna are presented and discussed. A 20 dB reduction of radiated power in one quadrant of the radiation pattern offers a reduction of radiation towards the users head.

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Das Laila, Sujith Raman, Sreejith M Nair, Chandroth K. Aanandan, Kesavath Vasudevan, and Pezholil Mohanan, "Mobile Antenna with Reduced Radiation Hazards Towards Human Head," Progress In Electromagnetics Research Letters, Vol. 17, 39-46, 2010.
doi:10.2528/PIERL10071202

References

1. Fung, L. C., S. W. Leung, and K. H. Chan, "Experimental study of SAR reduction on commercial products and shielding materials on mobile phone applications," Microwave and Optical Technology Letters, Vol. 36, 419-422, 2003.
doi:10.1002/mop.10780 Google Scholar

2. Wang, J. and O. Fujiwara, "Reduction of electromagnetic absorption in the human head for portable telephones by a ferrite sheet attachment," IEICE Transation Communications, Vol. 80, 1810-1815, 1997. Google Scholar

3. Rowley, J. T. and R. B. Waterhouse, "Perrmance of shorted microstrip patch antennas for mobile communication handset at 1800 MHz," IEEE Transaction in Antennas Propagation, Vol. 47, No. 815--822, 1999. Google Scholar

4. Wunk, M., W. Kolosowski, and M. Amamowicz, "Microstrip antennas on multilayer dielectric for mobile system communication," Proceeding 14th International Wroclaw Symposium on Electromagnet Compact, 346-350, Poland, 1998. Google Scholar

5. Sor, J., Y. Qian, and T. Itoh, "Coplanar waveguide fed quasi yagi antenna," Electronic Letters, Vol. 36, 1-2, 2000.
doi:10.1049/el:20000132 Google Scholar

6. Su, L. and H. Ling, "Design of a closely spaced folded yagi antenna," IEEE Antennas Wireless Propagation, Vol. 5, 302-305, 2006. Google Scholar

7. Kwak, S. I., D.-U. Sim, and J. H. Kwon, "SAR reduction on mobile phone antenna using the EBG structures," Proceeding 38th European Microwave Conference, 1308-1311, The Netherlands, 2008. Google Scholar

8. Anguera, J., E. Martinez, C. Puente, C. Borja, and J. Soler, "Broad band dual frequency microstrip patch antenna with modified Sierpinski fractal geometry," IEEE Transaction in Antennas Propagation, Vol. 52, 66-73, 2004.
doi:10.1109/TAP.2003.822433 Google Scholar