volume | PIER Journals

Abstract

Omni-directional antennas are useful for variety of wireless communication devices as well as capable of handling the additional different frequency bands since the radiation pattern allows good transmission and reception from a mobile unit. However, to implement the two frequencies on a single antenna with wide bandwidth can be significant because of the presence of mutual coupling and interference effects between the two radiating elements. In this paper, a novel method of combining dual-band frequencies onto a single layer board with wide bandwidth is described. A dual-band printed dipole antenna is designed in this study by combining a rectangular and two "L" shaped radiating elements and are embedded on a single layer structure with relatively small size. The obtained results show that the proposed dual-band omni-directional microstrip antenna achieves high antenna efficiency and provides better bandwidth while maintaining the structural compact size.

1. Zhang, Z., M. F. Iskandar, J. C. Langer, and J. Mathews, "Dualband WLAN dipole antenna using an internal matching circuit," IEEE Transactions on Antennas and Propagation, Vol. 53, 1813-1818, 2005.
doi:10.1109/TAP.2005.846784 Google Scholar

2. Su, S. W. and J. H. Chou, "Low-cost flat metal-plate dipole antenna for 2.4/5-GHz WLAN operation," Microwave. Opt. Tech. Lett., Vol. 50, 1686-1687, 2008.
doi:10.1002/mop.23461 Google Scholar

3. Liu, W. C., "Optimal design of dual-band CPW-fed G-shaped monopole antenna for WLAN application," Progress In Electromagnetics Research, Vol. 74, 21-38, 2007.
doi:10.2528/PIER07041401 Google Scholar

4. Wu, Y.-J., B.-H. Sun, J.-F. Li, and Q.-Z. Liu, "Triple-band omni-directional antenna for WLAN application," Progress In Electromagnetics Research, Vol. 76, 477-484, 2007.
doi:10.2528/PIER07080601 Google Scholar

5. Jolani, F., A. M. Dadgarpour, and H. R. Hassani, "Compact mslot folded patch antenna for WLAN," Progress In Electromagnetics Research Letters, Vol. 3, 35-42, 2008.
doi:10.2528/PIERL08012801 Google Scholar

6. Chen, H. -M., J.-M. Chen, P.-S. Cheng, and T.-F. Lin, "Feed for dual-band printed dipole antenna," IEE Electron. Lett., Vol. 40, No. 21, 1320-1322, 2004.
doi:10.1049/el:20046360 Google Scholar

7. Kim, M. J., C. S. Cho, and J. Kim, "A dual-band printed dipole antenna with spiral structure for WLAN application," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 12, 910-912, 2005.
doi:10.1109/LMWC.2005.859947 Google Scholar

8. Su, S.-W. and J.-H. Chou, "Compact coaxial-line-fed flat-plane dipole antenna for WLAN applications," Microwave and Optical Tech. Lett., Vol. 50, 420-422, 2008.
doi:10.1002/mop.23116 Google Scholar

9. Alkanhal, M. A. S., "Composite compact triple-band microstrip antennas," Progress In Electromagnetics Research, Vol. 93, 221-236, 2009.
doi:10.2528/PIER09050407 Google Scholar

10. Ren, W., "Compact dual-band slot antenna for 2.4/5GHz WLAN applications," Progress In Electromagnetics Research B, Vol. 8, 319-327, 2008.
doi:10.2528/PIERB08071406 Google Scholar

11. Geng, J. P., J. J. Li, R. H. Jin, S. Ye, X. L. Liang, and M. Z. Li, "The development of curved microstrip antenna with defected ground structure," Progress In Electromagnetics Research, Vol. 98, 53-73, 2009.
doi:10.2528/PIER09081905 Google Scholar

12. Wang, C.-J. and S.-W. Chang, "Studies on dual-band multi-slot antennas," Progress In Electromagnetics Research, Vol. 83, 293-306, 2008.
doi:10.2528/PIER08061104 Google Scholar

13. Si, L.-M. and X. Lv, "CPW-fed multi-band omni-directional planar microstrip antenna using composite metamaterial resonators for wireless communications," Progress In Electromagnetics Research, Vol. 83, 133-146, 2008.
doi:10.2528/PIER08050404 Google Scholar

14. Behera, S. and K. J. Vinoy, "Microstrip square ring antenna for dual-band operation," Progress In Electromagnetics Research, Vol. 93, 41-56, 2009.
doi:10.2528/PIER09021909 Google Scholar

15. Roy, J. S. and M. Thomas, "Design of a circularly polarized microstrip antenna for WLAN," Progress In Electromagnetics Research M, Vol. 3, 79-90, 2008.
doi:10.2528/PIERM08050506 Google Scholar

16. Stutzman, W. L. and G. A. Thiele, Antenna Theory and Design, John Wiley and Sons, 2003.

17. Li, X., L. Yang, S.-X. Gong, and Y.-J. Yang, "Dual-band and wideband design of a printed dipole antenna integrated with dual-band balun," Progress In Electromagnetics Research Letters, Vol. 6, 165-174, 2009.
doi:10.2528/PIERL08120504 Google Scholar

Dr. Ooi Tze-Meng

Dr. Kim Geok Tan

Dr. Ahmed Wasif Reza