Low-SAR Miniaturized Handset Antenna Using EBG

Advances in wireless communications have paved the way for wide usage of mobile phones in modern society, resulting in mounting concerns surrounding its harmful radiation. Energy absorption in human biological tissues can be characterized by specific absorption rate (SAR). This value refers to the actual amount of electromagnetic energy absorbed in the biological tissues, thus a lower value of SAR indicates a lower radiation exposure risk to the human body. So, our challenge is to introduce mobile handset antennas with low SAR and operating at all mobile and wireless applications. In this chapter, novel configurations of single-element antenna are designed, simulated, fabricated, and measured. The antennas operate for most cellular applications: global system for mobile (GSM)-850/900, digital cellular system (DCS)-1800, personal communication service (PCS)-1900, universal mobile telecommunication system (UMTS)-2100, and long-term evolution (LTE) bands. The antennas also support wireless applications. The proposed antennas have a compact size and low SAR at all bands. Also, this chapter presents a comprehensive study on the performance of the antenna in the different environments. Furthermore, the antenna performance is tested in the presence of head and hand in free space and in a car. The simulation and measurement results are in good agreement.

[1]  Zhinong Ying,et al.  SAR study of different MIMO antenna designs for LTE application in smart mobile phones , 2012, Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.

[2]  Stefania Sesia,et al.  LTE - The UMTS Long Term Evolution, Second Edition , 2011 .

[3]  K. S. Sultan,et al.  Low SAR, Simple Printed Compact Multiband Antenna for Mobile and Wireless Communication Applications , 2014 .

[4]  Michael Yan Wah Chia,et al.  Compact internal quad‐band antenna for mobile phones , 2003 .

[5]  Young-Bae Jung,et al.  Octaband Internal Antenna for 4G Mobile Handset , 2011, IEEE Antennas and Wireless Propagation Letters.

[6]  Essam A. Hashish,et al.  Low SAR, Compact and Multiband Antenna , 2013 .

[7]  Zhinong Ying,et al.  Antennas in Cellular Phones for Mobile Communications , 2012, Proceedings of the IEEE.

[8]  R. W. Lau,et al.  The dielectric properties of biological tissues: II. Measurements in the frequency range 10 Hz to 20 GHz. , 1996, Physics in medicine and biology.

[9]  H. Abdullah,et al.  Low SAR , Planar Monopole Antenna with Three Branch Lines for DVB , Mobile , and WLAN , 2014 .

[10]  K. S. Sultan,et al.  Low-SAR, Miniaturized Printed Antenna for Mobile, ISM, and WLAN Services , 2013, IEEE Antennas and Wireless Propagation Letters.

[11]  K. S. Sultan,et al.  Low SAR, compact and multiband antenna for mobile and wireless communication , 2012, The 2nd Middle East Conference on Antennas and Propagation.

[12]  R.J. Langley,et al.  Quad-Band Internal Mobile Phone Antenna , 2007, IEEE Transactions on Antennas and Propagation.

[13]  N. Kuster,et al.  Dipole configurations with strongly improved radiation efficiency for hand-held transceivers , 1998 .

[14]  Hsien-Wen Liu,et al.  Folded Dual-Loop Antenna for GSM/DCS/PCS/UMTS Mobile Handset Applications , 2010, IEEE Antennas and Wireless Propagation Letters.

[15]  Chia-Lun Tang,et al.  A compact coupled-fed penta-band antenna for mobile phone application , 2010, 2010 Asia-Pacific Microwave Conference.

[16]  C. Luxey,et al.  Design of an internal quad-band antenna for mobile phones , 2004, IEEE Microwave and Wireless Components Letters.

[17]  H. Abdullah,et al.  Multiband compact low SAR mobile hand held Antenna , 2014 .

[18]  Hildeberto Jardon-Aguilar,et al.  State of the art methods for low SAR antenna implementation , 2010, Proceedings of the Fourth European Conference on Antennas and Propagation.

[19]  Bomson Lee,et al.  SAR reduction for mobile phones based on analysis of EM absorbing material characteristics , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[20]  Zhenghe Feng,et al.  A Compact Hepta-Band Loop-Inverted F Reconfigurable Antenna for Mobile Phone , 2012, IEEE Transactions on Antennas and Propagation.

[21]  P. Czerski,et al.  Guidelines on limits of exposure to radiofrequency electromagnetic fields in the frequency range from 100 kHz to 300 GHz. International Non-Ionizing Radiation Committee of the International Radiation Protection Association. , 1988, Health physics.

[22]  Esmat A. Abdallah,et al.  Comprehensive study of printed antenna with the handset modeling , 2016 .