Vol. 49

Latest Volume
All Volumes
All Issues

Multiband Compact Low SAR Mobile Hand Held Antenna

By Haythem Hussein Abdullah and Kamel Salah Sultan
Progress In Electromagnetics Research Letters, Vol. 49, 65-71, 2014


With the vast emergence of new mobile applications, multiband operation in a compact size is mandatory for market penetration. In this paper, a new mobile handset antenna suitable for both mobile and wireless LAN services is presented. The antenna operates for most of the mobile applications such as the GSM 900, DCS 1800, PCS 1900, UMTS 2100, and most of the LTE bands, especially the low frequency LTE 700 band at -10 dB. The antenna also supports the WIMAX, WLAN, and the ISM bands. The antenna not only has a compact size, but also supports a low SAR radiation at all the operating frequencies. The antenna consists of two concentric open rings that act as quarter wavelength monopoles. The inner ring radiates at 900 MHz, while the outer ring radiates at 700 MHz. The inner ring works as a monopole radiator as well as a slot radiator fed by another rectangular monopole. The advantage of the slot is that it supports a wide range of modes that by its role open the radiation band from 1.65 to 3.6 GHz. The antenna meets three challenging parameters: compact size, multiband operation including low frequency bands, and low SAR radiation. Good agreement is noticed between the experimental and simulated results.


Haythem Hussein Abdullah and Kamel Salah Sultan, "Multiband Compact Low SAR Mobile Hand Held Antenna," Progress In Electromagnetics Research Letters, Vol. 49, 65-71, 2014.


    1. Sesia, S., I. Toufik, and M. Baker, LTE --- The UMTS Long Term Evolution: From Theory to Practice, Wiley, Chichester, U.K., 2009.

    2. Bhatti, R. A., S. Yi, and S. Park, "Compact antenna array with port decoupling for LTEstandardized mobile phones," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 1430-1433, 2009.

    3. Young, C. W., Y. B. Jung, and C. W. Jung, "Octaband internal antenna for 4G mobile handset," IEEE Antennas and Wireless Propagation Letters, Vol. 10, 817-819, 2011.

    4. Wong, K. L. and W. Y. Chen, "Small-size printed loop-type antenna integrated with two stacked coupled-fed shorted strip monopoles for eight-band LTE/GSM/UMTS operation in the mobile," Microwave and Optical Technology Letters, Vol. 52, No. 7, 1471-1476, Jul. 2010.

    5. Guo, Q., R. Mittra, F. Lei, Z. Li, J. Ju, and J. Byun, "Interaction between internal antenna and external antenna of mobile phone and hand effect," IEEE Trans. on Antennas and Propag., Vol. 61, No. 2, Feb. 2013.

    6. 3GPP, "3rd generation partnership project; technical specification group radio access network; Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception (Release 10),", 3GPP TS36.101 V10.4.0, Table 5.5-1 E-UTRA, Sep. 2011.

    7. Zhai, H., Z. Ma, Y. Han, and C. Liang, "A compact printed antenna for triple-band WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 65-68, 2013.

    8. Chen, W. S. and W. C. Jhang, "A planar WWAN/LTE antenna for portable devices," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 19-22, 2013.

    9. Chu, F. H. and K. L. Wong, "Internal coupled-fed dual-loop antenna integrated with a USB connector for WWAN/LTE mobile handset," IEEE Trans. on Antennas and Propag., Vol. 59, No. 11, 4215-4221, Nov. 2011.

    10. Chiu, C.-W., C.-H. Chang, and Y.-J. Chi, "A meandered loop antenna for LTE/WWAN operations in a smart phone," Progress In Electromagnetics Research C, Vol. 16, 147-160, 2010.

    11. Wong, K. L., W. Y. Chen, C. Y. Wu, and W. Y. Li, "Small-size internal eight-band LTE/WWAN mobile phone antenna with internal distributed LC matching circuit," Microw. Opt. Technol. Lett., Vol. 52, 2244-2250, 2010.

    12. Kang, T. W. and K. L. Wong, "Chip-inductor-embedded small-size printed strip monopole for WWAN operation in the mobile phone," Microw. Opt. Technol. Lett., Vol. 51, 966-971, 2009.

    13. IEEE C95.1-2005, "IEEE standards for safety levels with respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz,", Institute of Electrical and Electronics Engineers, New York, 2005.

    14. International Non-Ionizing Radiation Committee of the International Radiation Protection Association, "Guidelines on limits on exposure to radio frequency electromagnetic fields in the frequency range from 100 kHz to 300 GHz," Health Physics, Vol. 54, No. 1, 115-123, 1988.

    15. CST Microwave Studio Suite 2011 User’s Manual, www.cst.com, .

    16. Gabriel, S., R. W. Lau, and C. Gabriel, "The dielectric properties of biological tissues. II. Measurements in the frequency range 10Hz to 20GHz," Phys. Med. Biol., Vol. 41, 2251-2269, 1996.

    17. Gabriel, C., "Tissue equivalent material for hand phantoms," Phys. Med. Biol., Vol. 52, 4205-4210, 2007.

    18. CTIA Certification Department Program, "Test plan for mobile station over the air performance V method of measurement for radiated RF power and receiver performance,", [Online]. Available: www.ctia.org.