volume | PIER Journals

Abstract

In this paper, a directional slot antenna with parasitic patch and windowed superstrate is presented. Through this composition, high-gain property can easily be obtained by this proposed antenna. The proposed antenna has a measured impedance bandwidth of 2.41-2.49 GHz for S11<-10 dB, which can cover the 2.4-2.484 GHz frequency band of WLAN application. Simulated and measured results show that high-gain features up to 11.50 dBi across the corresponding impedance band are achieved. Details of the proposed slot antenna configurations and design procedures are given; the experimental results are also given and discussed.

1. Sharma, S. K., L. Shafai, and N. Jacob, "Investigation of wide-band microstrip slot antenna," IEEE Trans. Antennas and Propagation, Vol. 52, No. 3, 865-872, 2004.
doi:10.1109/TAP.2004.825191 Google Scholar

2. Sharma, S. K., N. Jacob, and L. Shafai, "Low profile wide band slot antenna for wireless communications," Proc. IEEE AP-S Int. Symp., Vol. 1, 390-393, 2002. Google Scholar

3. Sabri, H. and Z. Atlasbaf, "Two novel compact triple-band microstrip annular-ring slot antenna for PCS-1900 and WLAN applications," Progress In Electromagnetics Research Letters, Vol. 5, 87-98, 2008.
doi:10.2528/PIERL08110301 Google Scholar

4. Gao, G.-P., M. Li, S.-F. Niu, X.-J. Li, B.-N. Li, and J.-S. Zhang, "Study of a novel wideband circular slot antenna having frequency band-notched function," Progress In Electromagnetics Research, Vol. 96, 141-154, 2009.
doi:10.2528/PIER09080308 Google Scholar

5. Mahatthanajatuphat, C., P. Akkaraekthalin, S. Saleekaw, and M. Krairiksh, "Bidirectional multiband antenna with modified antenna with modified fractal slot fed by CPW," Progress In Electromagnetics Research, Vol. 95, 59-72, 2009.
doi:10.2528/PIER09061603 Google Scholar

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

7. Eldek, A. A., A. Z. Elsherbeni, and C. E. Smith, "Design of wideband triangle slot antennas with tuning stub," Progress In Electromagnetics Research, Vol. 48, 233-248, 2004.
doi:10.2528/PIER04022303 Google Scholar

8. Eldesouki, E. M. A., K. F. A. Hussein, and A. M. El-Nadi, "Circular polarized arrays of cavity backed slot antennas for X-band satellite communications," Progress In Electromagnetics Research B, Vol. 9, 179-198, 2008.
doi:10.2528/PIERB08080302 Google Scholar

9. Zheng, B. Y. and Z. X. Shen, "Effect of a finite ground plane on microstrip-fed cavity-backed slot antennas," IEEE Trans. Antennas and Propagation, Vol. 53, No. 2, 862-865, 2005.
doi:10.1109/TAP.2004.841278 Google Scholar

10. Leung, K. W. and K. Y. Chow, "Theory and experiment of the hemispherical cavity-backed slot antenna," IEEE Trans. Antennas and Propagation, Vol. 46, No. 8, 1234-1241, 1998.
doi:10.1109/8.718580 Google Scholar

11. Li, Q., Z. X. Shen, and P. T. Teo, "Microstrip-fed cavity-backed slot antennas," Microwave Opt. Technol. Lett., Vol. 33, No. 4, 229-233, 2002.
doi:10.1002/mop.10283 Google Scholar

12. Li, Q. and Z.-X. Shen, "An inverted microstrip-fed cavity-backed slot antenna for circular polarization," IEEE Antennas Wireless Propag. Lett., Vol. 1, 190-192, 2002. Google Scholar

13. Qu, S.-W., J.-L. Li, Q. Xue, and C. H. Chan, "Novel unidirectional slot antenna with a vertical wall," Progress In Electromagnetics Research, Vol. 84, 239-251, 2008.
doi:10.2528/PIER08072802 Google Scholar

14. Vallecchi, A. and G. B. Gentili, "Microstrip-fed slot antennas backed by a very thin cavity," Microwave Opt. Technol. Lett., Vol. 49, No. 1, 247-250, 2007.
doi:10.1002/mop.22073 Google Scholar

15. Chair, R., A. A. Kishk, K.-F. Lee, C. E. Smith, and D. Kajfez, "Microstrip line and CPW fed ultrawideband slot antennas with U-shaped tuning stub and reflector ," Progress In Electromagnetics Research, Vol. 56, 163-182, 2006.
doi:10.2528/PIER05060701 Google Scholar

16. Rao, Q., T. A. Denidni, and R. H. Johnston, "A single-substrate microstrip-fed slot antenna array with reduced back radiation," IEEE Antennas Wireless Propag. Lett., Vol. 3, 265-268, 2004.
doi:10.1109/LAWP.2004.836575 Google Scholar

17. Rao, Q., T. A. Denidni, and R. H. Johnston, "A new aperture coupled microstrip slot antenna," IEEE Trans. Antennas and Propagation, Vol. 53, No. 9, 2818-2826, 2005.
doi:10.1109/TAP.2005.854521 Google Scholar

18. Tan, W. H., Z. X. Shen, Z. H. Shao, et al. "A gain-enhanced microstrip-fed cavity-backed slot antenna," IEEE Asian Pacific Microwave Conference Suzhou, No. 1-5, 789-792, 2005. Google Scholar

19. Ma, H. Q., Q.-X. Chu, and Q. Zhang, "High gain cavity-backed slot antenna with a windowed metallic superstrate," Microwave Opt. Technol. Lett., Vol. 50, No. 12, 3114-3118, 2008.
doi:10.1002/mop.23880 Google Scholar

20. Zhang, Q.-Y. and Q.-X. Chu, "Triple-band cavity-backed Z-like slot antenna for WLAN applications," Microwave Opt. Technol. Lett., Vol. 51, No. 10, 2296-2301, 2009.
doi:10.1002/mop.24616 Google Scholar

Dr. Zhi-Hong Tu

Prof. Qing-Xin Chu

Dr. Qiu-Yi Zhang