Vol. 39

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues

A Coplanar Waveguide Fed Ultra Wideband Hexagonal Slot Antenna with Dual Band Rejection

By Tapan Mandal and Santanu Das
Progress In Electromagnetics Research C, Vol. 39, 209-224, 2013


In this paper a printed regular hexagonal slot antenna with a hexagonal stub fed by a coplanar waveguide line has been considered for ultra wide bandwidth. This antenna is then modified to obtain dual band rejection. The Wireless Local Area Network (WLAN) and Wireless Microwave Access (WiMAX) band rejections are realized by incorporating a C-shape slot within the exciting stub as well as a couple of Z-shape open circuit stubs symmetrically inserted at the edge of the slot. The length and width of the C-shape slot and Z-shape stub offer sufficient freedom for selecting and shifting the notch bands. Magnitude of S11, impedance, gain and radiation characteristics of them are studied and discussed here. From the measured results, it has been observed that the impedance bandwidth, defined by magnitude of S11 ≤ -10 dB, reaches a value of 8.18 GHz (2.96~11.14 GHz) except dual frequency stop bands of 3.28-3.7 GHz and 5.1-5.90 GHz. From the experimental results, it is observed that the radiation patterns are omnidirectional in the H-plane and dipole in nature in the E-plane. The antenna gain varies from 4.8 dB to 5.3 dB over the whole operating band excluding the notch bands. Surface current distributions are used to analyze the effects of the C-slot and Z-shape stub. Measured group delay has very small variation within the operating band except notch bands and hence the proposed antenna may be suitable for UWB applications.


Tapan Mandal and Santanu Das, "A Coplanar Waveguide Fed Ultra Wideband Hexagonal Slot Antenna with Dual Band Rejection," Progress In Electromagnetics Research C, Vol. 39, 209-224, 2013.


    1. First Report and Order, "Revision of part 15 of the commission's rule regarding ultra-wideband transmission system FCC 02-48," Federal Communications Commission, 2002.

    2. Chen, H. D., "Broadband CPW-fed square slot antennas with a widened tuning stub," IEEE Transaction on Antennas and Propagation, Vol. 51, No. 8, 1982-1986, 2003.

    3. Abdollahv, M., G. Dadashzadeh, and D. Mostafa, "Compact dual band-notched printed monopole antenna for UWB application," IEEE Antennas and Wireless Propagation Letters, Vol. 9, 1148-1151, 2010.

    4. Ghaderi, M. R. and F. Mohajeri, "A compact hexagonal wide slot antennas with microstrip fed monopole for UWB applications," EEE Antenna and Wireless Propagation Letter, Vol. 10, 682-685, 2011.

    5. Liao, X. J., H. C. Yang, N. Han, and Y. Li, "Aperture UWB antenna with triple band-notched characteristics," Electronics Letters, Vol. 47, No. 2, 2011.

    6. Li, P. C., J. X. Liang, and X. D. Chen, "Study of printed elliptical/circular slot antennas for ultra-wide band applications," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 6, 1670-1675, 2006.

    7. Barbarino, S. and F. Consoli, "UWB circular slot antenna with an inverted-L notch ¯lter for the 5 GHz WLAN band," Progress In Electromagnetics Research, Vol. 104, 1-13, 2010.

    8. Cheng, Y. and K.-J. Hung, "Compact ultra-wide band rectangular aperture antenna and band-notched designs," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 11, November 2006.

    9. Liang, X. L., T. A. Denidni, L. N. Zhang, R. H. Jin, J. P. Geng, and Q. Yu, "Printed binomial curved slot antennas for various wideband applications," IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 4, 1058-1065, 2011.

    10. Chair, , R., A. A. Kishk, and K. F. Lee, "Ultra wide band coplanar waveguide-fed rectangular slot antenna," IEEE Antennas Wireless Propagation Letter, Vol. 3, No. 12, 227-229, 2004.

    11. Moeikham, P., C. Mahatthanajatuphat, and P. Akkaraekthalin, "A compact ultra-wideband monopole antenna with 5.5 GHz notch," Progress In Electromagnetics Research C, Vol. 26, 13-27, 2012.

    12. Zhu, F., S. Gao, A. T. S. Ho, C. H. See, R. A. Abd Alhameed, J. Li, and J. Xu, "Design and analysis of planar ultra-wideband with dual notched function," Progress In Electromagnetics Research, Vol. 127, 523-536, 2012.

    13. Habib, M. A., A. Bostani Djaiz, M. Nedil, M. C. E. Yagoub, and T. A. Denidni, "Ultra wideband CPW-fed aperture antenna with WLAN band rejection," Progress In Electromagnetics Research, Vol. 106, 17-31, 2010.

    14. Islam, M. T., R. Azim, and A. T. Mobashsher, "Triple band-notched planar UWB antenna using parasitic strips," Progress In Electromagnetics Research, Vol. 129, 161-179, 2012.

    15. Panda, J. R. and R. S. Kshetrimayum, "A compact CPW-fed hexagonal 5 GHz/6 GHz band-notched antenna with an U-shaped slot for ultra-wide band communication systems," 2010 International Conference on Signal Processing and Communications (SP-COM), 1-5, 2010 (IEEE 978-1-4244-7138-6/10).

    16. Zeland IE3DTM Software, .