Design of Reconfigurable Band Notches Antenna for Cognitive Radio Applications

Hicham Lalj, Hafid Griguer, M’hamed Drissi

EMSI of Rabat, Rabat, Morocco.
UEB, INSA of Rennes, IETR, Rennes, France.
UEB, INSA of Rennes, IETR, Rennes, France;EMSI of Rabat, Rabat, Morocco.

DOI: 10.4236/wet.2014.53011                

Abstract

In this paper, an antenna with reconfigurable band notches, for cognitive radio applications, is proposed. The antenna can be operated as ultra wideband, and is reconfigurable in terms of the ability to select a notched band in the SRR resonant frequency. The reconfigurable band notches are induced using a band-stop filter based on split-ring resonators (SRRs), and are controlled using electronic switches mounted over the SRRs. For this sake, the design of the band-stop filter is proposed. A prototype of filter is fabricated and measured. The incorporation of a band-stop filter, into a wideband antenna, is then looked into. The proposed antenna is designed and simulated using Ansoft HFSS. A prototype of the antenna is fabricated and measured. A good analogy between simulated and measured results is obtained.

Keywords

Metamaterials, Band-Stop Filter, Split Ring Resonator (SRR), Band Notches Antenna

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Mitola, J. and Maguire, G.Q. (1999) Cognitive Radio: Making Software Radios More Personal. IEEE Personal Communications, 6, 13-18. http://dx.doi.org/10.1109/98.788210
[2]	FCC (2002) Report of the Spectrum Efficiency Working Group. FCC Spectrum Policy Task Force, Technical Report.
[3]	Ebrahimi, E., Kelly, J.R. and Hall, P.S. (2009) A Reconfigurable Narrowband Antenna Integrated with Wideband Monopole for Cognitive Radio Applications. IEEE Antennas and Propagation Society International Symposium (APSURSI).
[4]	Gardner, P., Hamid, M.R., Hall, P.S., Kelly, J., Ghanem, F. and Ebrahimi, E. (2008) Reconfigurable Antennas for Cognitive Radio: Requirements and Potential Design Approaches. Proceedings of the IET Seminar on Wideband, Multiband Antennas and Arrays for Defence or Civil Applications, London, March, 89-94.
[5]	Zhang, Y., et al. (2008) Planar Ultrawideband Antennas with Multiple Notched Bands Based on Etched Slots on the Patch and/or Split Ring Resonators on the Feed Line. IEEE Transactions on Antennas and Propagation, 56, 3063-3068. http://dx.doi.org/10.1109/TAP.2008.928815
[6]	Pendry, J.B., Holden, A.J., Robbins, D.J. and Stewart, W.J. (1999) Magnetism from Conductors and Enhanced Nonlinear Phenomena. IEEE Transactions on Microwave Theory and Techniques, 47, 2075-2084. http://dx.doi.org/10.1109/22.798002
[7]	Al-Husseini, M., Tawk, Y., Christodoulou, C.G., Kabalan, K.Y. and El-Hajj, A. (2011) Design of an Antenna Wit Reconfigurable Band Rejection for UWB Cognitive Radio. PIERS Conference, Marrakesh, March.
[8]	Ansoft HFSS, Pittsburg, USA.