Progress In Electromagnetics Research B
ISSN: 1937-6472
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By A. H. Ramadan, J. Costantine, M. Al-Husseini, K. Y. Kabalan, Y. Tawk, and C. G. Christodoulou

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In this paper, frequency-tunable microstrip antennas, for cognitive radio applications, are proposed. The approach is based on electrically tuning the antenna's operating frequency by integrating reconfigurable band pass filters into wideband antenna structures. The design of an open loop resonator (OLR)-based bandstop filter, and its transformation to a bandpass filter, are investigated first. Then, the incorporation of the bandpass filter, with a wideband antenna, is detailed. The same methodology is employed to design cognitive radio pattern and polarization diversity tunable filter-antennas. A good agreement between the simulated and measured results for the different fabricated prototypes is attained.

A. H. Ramadan, J. Costantine, M. Al-Husseini, K. Y. Kabalan, Y. Tawk, and C. G. Christodoulou, "Tunable Filter-Antennas for Cognitive Radio Applications," Progress In Electromagnetics Research B, Vol. 57, 253-265, 2014.

1. Kitsunezuka, M., K. Kunihiro, and M. Fukaishi, "Efficient use of the spectrum," IEEE Microwave Magazine, Vol. 13, No. 1, 55-63, 2012.

2. Yucek, T. and H. Arslan, "A survey of spectrum sensing algorithms for cognitive radio applications," IEEE Communications Surveys Tutorials, Vol. 11, No. 1, 116-130, 2009.

3. Axell, E., G. Leus, and E. G. Larsson, \Overview of spectrum sensing for cognitive radio," , 2010 2nd International Workshop on Cognitive Information Processing (CIP) , 322-327, 2010.

4. Weifang, W., "Spectrum sensing for cognitive radio," Third International Symposium onIntelligent Information Technology Application Workshops (IITAW), 410-412, 2009.

5. Kwan, A., S. A. Bassam, and F. M. Ghannouchi, "Sub-sampling technique for spectrum sensing in cognitive radio systems," IEEE Radio and Wireless Symposium (RWS) , 347-350, 2010.

6. Weingart, T., G. V. Yee, D. C. Sicker, and D. Grunwald, "Implementation of a reconfiguration algorithm for cognitive radio," 2nd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) , 171-180, 2007.

7. Cabric, D. and R. W. Brodersen, "Physical layer design issues unique to cognitive radio systems," IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Vol. 2, 759-763, 2005.

8. Razavi, B., "Challenges in the design of cognitive radios," IEEE Custom Integrated Circuits Conference (CICC), 391-398, 2009.

9. Carey-Smith, B. E., P. A. Warr, P. R. Rogers, M. A. Beach, and G. S. Hilton, "Flexible frequency discrimination subsystems for reconfigurable radio front-ends," EURASIP Journal on Wireless Communications and Networking, Vol. 2005, No. 3, 354-363, 2005.

10. Al-Husseini, M., A. El-Hajj, Y. Tawk, K. Y. Kabalan, and C. G. Christodoulou, "A simple dual-port antenna system for cognitive radio applications," International Conference on High Performance Computing and Simulation (HPCS) , 549-552, 2010.

11. Fangfang, L., C. Feng, C. Guo, W. Yue, and D. Wei, "Polarization Spectrum Sensing Scheme for Cognitive Radios," 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCom) , 1-4, 2009.

12. Wei, D., C. Guo, L. Fangfang, and Z. Zeng, "A SINR improving scheme based on optimal polarization receiving for the cognitive radios," IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC) , 100-104, 2009.

13. Dricot, J., G. Ferrari, F. Quitin, A. Panahandeh, F. Horlin, and P. De Doncker, "Polarization orthogonality for the co-existence of wideband fading cognitive networks," Proceedings of the Fifth International Conference on Cognitive Radio Oriented Wireless Networks Communications (CROWNCOM) , 1-5, 2010.

14. Marques, R., F. Martin, and M. Sorolla, "Metamaterials with Negative Parameters: Theory, Design and Microwave Applications," John Wiley & Sons, Inc., 2008.

15. Smith, D. R., D. C. Vier, T. Koschny, and C. M. Soukoulis, "Electromagnetic parameter retrieval from inhomogeneous metamaterials," Physical Review E, Vol. 71, No. 3, 036617-1-11, 2005.

16. Goldsmith, A., "Wireless Communications," Cambridge University Press, 2005.

17. Vaughan, R. G. and J. B. Andersen, "Antenna diversity in mobile communications," IEEE Transactions on Vehicular Technology, Vol. 36, No. 4, 149-172, 1987.

18. Yuan, D., Z. Du, K. Gong, and Z. Feng, "A novel dual-band printed diversity antenna for mobile terminals," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 7, 2088-2096, 2007.

19. Al-Husseini, M., A. Ramadan, K. Y. Kabalan, A. El-Hajj, and C. G. Christodoulou, "A novel printed diversity antenna for WiMAX applications," IEEE International Symposium on Antennas and Propagation (APS/URSI) , 2212-2214, 2011.

20. Qin, P. -Y., A. R. Weily, Y. J. Guo, and C.-H. Liang, "Polarization reconfigurable U-slot patch antenna," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 10, 3383-3388, 2010.

21. Wu, J. -W., J.-Y. Ke, C. F. Jou, and C.-J. Wang, "Microstrip-fed broadband circularly polarised monopole antenna," IET Microwaves, Antennas & Propagation, Vol. 4, No. 4, 518-525, 2010.

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