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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Small Internal Antenna Using Multiband, Wideband, and High-Isolation MIMO Techniques

  • Kim, Sang-Hyeong (Department of Electrical and Computer Engineering, Hanyang University) ;
  • Jin, Zhe-Jun (Department of Electrical and Computer Engineering, Hanyang University) ;
  • Chae, Yoon-Byung (Department of Electrical and Computer Engineering, Hanyang University) ;
  • Yun, Tae-Yeoul (Department of Electrical and Computer Engineering, Hanyang University)
  • Received : 2012.03.21
  • Accepted : 2012.08.14
  • Published : 2013.02.01
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Abstract

In this paper, a small internal antenna for a mobile handset is presented using multiband, wideband, and high-isolation multiple-input multiple-output techniques. The proposed antenna consists of three planar inverted-F antennas (PIFAs) that operate in the global system for mobile communication (GSM900), the digital communication system (DCS), the personal communication system (PCS), the universal mobile telecommunication system (UMTS), and wireless local area network (WLAN) bands with a physical size of $40mm{\times}10mm{\times}10mm$. A resonator attached to the folded PIFA creates dual resonances, achieving a wide bandwidth of approximately 460 MHz, covering the DCS, PCS, and UMTS bands; a meander shorting line is used to improve impedance matching. Additionally, a modified neutralization link is embedded between diversity antennas to enhance isolation, which results in a 6-dB improvement in the isolation and less than 0.1 in the envelope correlation coefficient evaluated from the far-field radiation patterns. Simulation and measurements demonstrate very similar results for S-parameters and radiation patterns. Peak gains show 3.73 dBi, 3.77 dBi, 3.28 dBi, 2.15 dBi, and 5.86 dBi, and antenna efficiencies show 56.15%, 72.15%, 68.59%, 52.92%, and 82.93% for GSM900, DCS, PCS, UMTS, and WLAN bands, respectively.

Keywords

References

  1. N. Takemura, "Inverted-FL Antenna with Self-Complementary Structure," IEEE Trans. Antennas Propag, vol. 57, no. 10, Oct. 2009, pp. 3029-3034. https://doi.org/10.1109/TAP.2009.2028640
  2. A. Andújar, J. Anguera, and C. Puente, "Ground Plane Boosters as a Compact Antenna Technology for Wireless Handheld Devices," IEEE Trans. Antennas Propag., vol. 59, no. 5, May 2011, pp. 1668-1677. https://doi.org/10.1109/TAP.2011.2122299
  3. R.G. Vaughan and J.B. Andersen, "Antenna Diversity in Mobile Communications," IEEE Trans. Antennas Propag., vol. 36, no. 4, Nov. 1987, pp. 149-172.
  4. J.H. Byun, J.H. Jo, and B.J. Lee, "Compact Dual-Band Diversity Antenna for Mobile Handset Applications," Microw. Opt. Technol. Lett., vol. 50, no. 10, Oct. 2008, pp. 2600-2604. https://doi.org/10.1002/mop.23759
  5. K.S. Min, D.J. Kim, and M.S. Kim, "Multi-channel MIMO Antenna Design for WiBro/PCS Band," IEEE Antennas Propag. Soc. Int. Symp., Dec. 2007, pp. 1225-1228.
  6. Y.S. Wang, M.C. Lee, and S.J. Chung, "Two PIFA-Related Miniaturized Dual-Band Antennas," IEEE Trans. Antennas Propag., vol. 55, no. 3, Mar. 2007, pp. 805-811. https://doi.org/10.1109/TAP.2007.891843
  7. F.G. Zhu, J.D. Xu, and Q. Xu, "Reduction of Mutual Coupling Between Closely-Packed Antenna Elements Using Defected Ground Structure," IET Electron. Lett., vol. 45, no. 12, June 2009, pp. 601-602. https://doi.org/10.1049/el.2009.0985
  8. F. Yang and Y. Rahmat-Samii, "Mircostrip Antennas Integrated with Electromagnetic Band-Gap (EBG) Structure: A Low Mutual Coupling Design for Array Applications," IEEE Trans. Antennas Propag., vol. 51, no. 10, Oct. 2003, pp. 2936-2946. https://doi.org/10.1109/TAP.2003.817983
  9. K.J. Kim and K.H. Ahn, "The High Isolation Dual-Band Inverted F Antennas Diversity System with the Small N-Section Resonators on the Ground Plane," Microw. Opt. Technol. Lett., vol. 49, no. 3, Mar. 2007, pp. 731-734. https://doi.org/10.1002/mop.22238
  10. A. Diallo et al., "Study and Reduction of the Mutual Coupling Between Two Mobile Phone PIFAs Operating in the DCS1800 and UMTS Bands," IEEE Trans. Antennas Propag., vol. 54, no. 11, Nov. 2006, pp. 3063-3074. https://doi.org/10.1109/TAP.2006.883981
  11. A. Chebihi et al., "A Novel Isolation Technique for Closely Spaced PIFAs for UMTS Mobile Phones," IEEE Antennas Wireless Propag. Lett., vol. 7, 2008, pp. 665-668. https://doi.org/10.1109/LAWP.2008.2009887
  12. Ansoft Corporation, High Frequency Structure Simulator (HFSS), ver. 10. http:// www.ansoft.com
  13. D.M. Nashaat, H.A. Elsadek, and H. Ghali, "Single Feed Compact Quad-Band PIFA Antennas for Wireless Communication Applications," IEEE Trans. Antennas Propag., vol. 53, no. 8, Aug. 2005, pp. 2631-2635. https://doi.org/10.1109/TAP.2005.851872
  14. A.C.K. Mak, C.R. Rowell, and R.D. Murch, "Isolation Enhancement Between Two Closely Packed Antennas," IEEE Trans. Antennas Propag., vol. 56, no. 11, Nov. 2008, pp. 3411-3419. https://doi.org/10.1109/TAP.2008.2005460
  15. S.C.K. Ko and R.D. Murch, "Compact Integrated Diversity Antenna for Wireless Communications," IEEE Trans. Antennas Propag., vol. 49, no. 6, June 2001, pp. 954-960. https://doi.org/10.1109/8.931154

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