A Hybrid Reconfigurable Antenna Design for Cognitive Radio System—Combination of Sensing and Reconfigurable Antennas

Yahya S. H. Khraisat, Nedal Al-Tawalbeh, Imad A. Abdel-Hafez, Ebrahim Shibly

Electrical and Electronics Department, Al-Huson University College, Al-Balqa’ Applied University, Irbed, Jordan.
Electrical and Electronics Department, Al-Huson University College, Al-Balqa’ Applied University, Irbed, Jordan..

DOI: 10.4236/jemaa.2013.58051                

Abstract

This paper presents a modification of an existing cognitive antenna design which contains two antennas: one is a sensing that covers the band from 1 - 11 GHz and the other is a hybrid triangular reconfigurable antenna. Two antennas are combined together to create a new design which called Cognitive Antenna. The new shape of the reconfigurable antenna will affect the cognitive antenna so as to work at two different frequencies via rotation by 180°. At each rotation, the antenna takes single frequency from number of possible frequencies that sensing antenna would find.

Keywords

Reconfigurable Antenna; Sensing Antenna; Hybrid Combination; Cognitive Radio System

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	J. Mitola III, “Software Radios: Survey, Critical Evaluation and Future Directions,” IEEE Aerospace and Electronic Systems Magazine, Vol. 8, No. 4, 1993 pp. 25-36.
[2]	Y. Tawk and C. G. Christodoulou, “A New Reconfigurable Antenna Design for Cognitive Radio Member,” IEEE Antennas and Wireless Propagation Letters, Vol. 8, 2009, pp. 1378-1381.
[3]	FCC Spectrum Policy Task Force, “Report of the Spectrum Efficiency Working Group,” Technical Report, Federal Communications Commission, Washington DC, 2002.
[4]	J. Mitola, “Cognitive Radio: An Integrated Agent Architecture for Software Defined Radio,” Ph.D. Dissertation, Royal Institute of Technology (KTH), Stockholm, 2000.
[5]	M. Manteghi, “A Switch-Band Antenna for Software Defined Radio Applications,” IEEE Antennas and Wireless Propagation Letters, Vol. 8, 2009, pp. 3-5. doi:10.1109/LAWP.2008.2005256
[6]	K. R. Boyle, et al., “Reconfigurable Antennas for SDR and Cognitive Radio,” Proceedings of the 2nd European Conference on Antennas and Propagation, Edinburgh, 11-16 November 2007, pp. 1-6.
[7]	E. Ebrahimi and P. S. Hall, “A Dual Port Wide-Narrowband Antenna for Cognitive Radio,” Proceedings of 3rd European Conference on Antennas and Propagation, Berlin, 23-27 March 2009, pp. 809-812.
[8]	P. Gardner, M. R. Hamid, P. S. Hall, J. Kelly, F. Ghanem and E. Ebrahimi, “Reconfigurable Antennas for Cognitive Radio: Requirements and Potential Design Approaches,” IET Seminar on Wideband, Multiband Antennas and Arrays for Defence or Civil Applications, London, 13 March 2008, pp. 89-94. doi:10.1049/ic:20080090
[9]	Y. Tawk and C. G. Christodoulou, “A Cellular Automata Reconfigurable Microstrip Antenna Design,” Proceedings of IEEE Antennas and Propagation Society International Symposium, Charleston, 1-5 June 2009, pp. 1-4.