1. Bellofiore, S., C. Balanis, J. Foutz, and A. Spanias, "Smart antenna systems for mobile communication networks. Part 1: Overview and antenna design," IEEE Antennas Propagat. Mag., 145-154, 2002.
doi:10.1109/MAP.2002.1039395

2. Azaro, R., M. Donelli, L. Fimognari, and A. Massa, "A planar electronically reconfigurable Wi-Fi band antenna based on a parasitic microstrip structure," IEEE Antennas and Wireless Propagation Letters, Vol. 6, 623-626, 2007.
doi:10.1109/LAWP.2007.908009

3. Donelli, M. and P. Febvre, "An inexpensive reconfigurable planar array for Wi-Fi applications," Progress In Electromagnetics Research C, Vol. 28, 71-81, 2012.
doi:10.2528/PIERC12012304

4. Rocca, P., M. Donelli, G. Oliveri, F. Viani, and A. Massa, "Reconfigurable sum-difference pattern by means of parasitic elements for forward-looking mono-pulse radar," IET Radar, Sonar and Navigation, Vol. 7, 747-754, 2013.
doi:10.1049/iet-rsn.2012.0300

5. Pozar, D., Microwave Engineering, John Wiley & Sons, New York, 1998.

6. Wincza, K. and S. Gruszczynski, "Miniaturized quasi-lunped coupled-line single section and multisection directional couplers," IEEE Transaction Microwave Theory Techniques, Vol. 48, No. 11, 2924-2931, Nov. 2010.
doi:10.1109/TMTT.2010.2078970

7. Robinson, J., S. Sinton, and Y. Rahmat-Samii, "Particle swarm, genetic algorithm, and their hybrids: Optimization of a profiled corrugated horn antenna," IEEE Antennas Propagat. Soc. Int. Symp. Dig., Vol. 1, 314-317, 2002.
doi:10.1109/APS.2002.1016311

8. Azaro, R., F. De Natale, M. Donelli, and A. Massa, "PSO-based optimization of matching loads for lossy transmission lines," Microwave and Optical Technology Letters, Vol. 48, No. 8, 1485-1487, 2006.
doi:10.1002/mop.21738

9. Donelli, M., R. Azaro, A. Massa, and M. Raffetto, "Unsupervised synthesis of microwave components by means of an evolutionary-based tool exploiting distributed computing resources," Progress In Electromagnetics Research, Vol. 56, 93-108, 2006.
doi:10.2528/PIER05010901

10. Donelli, M., R. Azaro, F. De Natale, and A. Massa, "An innovative computational approach based on a particle swarm strategy for adaptive phased-arrays control," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 3, 888-898, Mar. 2006.
doi:10.1109/TAP.2006.869912

11. Donelli, M. and A. Massa, "A computational approach based on a particle swarm optimizer for microwave imaging of two-dimensional dielectric scatterers," IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 5, 1761-1776, May 2005.
doi:10.1109/TMTT.2005.847068

12. Robinson, J. and Y. Rahmat-Samii, "Particle swarm optimization in electromagnetics," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 2, 397-407, 2004.
doi:10.1109/TAP.2004.823969

13. Chun, Y. H. and J. S. Hong, "Compact wide-band branch-line hybrids," IEEE Transactions on Microwave Theory and Techniques,, Vol. 54, 704-709, 2013.
doi:10.1109/TMTT.2005.862657

14. Chiang, Y. C. and C. Y. Chen, "Design of a wideband lumped-element 3-dB quadrature coupler," IEEE Transaction Microwave Theory Techniques, Vol. 9, 476-479, 2001.
doi:10.1109/22.910551

15. Zheng, G., J. Papapolymerou, and M. Tentzeris, "Wideband coplanar waveguide RF probe pad to microstrip transistions without via holes," IEEE Microwave and Wireless Components Letters, Vol. 12, 544-546, 2003.
doi:10.1109/LMWC.2003.820638

16. Rocca, P., M. Benedetti, M. Donelli, D. Franceschini, and A. Massa, "Evolutionary optimization as applied to inverse scattering problems," Inverse Problems, Vol. 25, 1-41, 2009.

17. Azaro, R., M. Donelli, M. Benedetti, P. Rocca, and A. Massa, "A GSM signals based positioning technique for mobile applications," Microwave and Optical Technology Letters, Vol. 50, No. 4, 2128-2130, 2008.
doi:10.1002/mop.23568

18. Caorsi, S., M. Donelli, A. Massa, and M. Raffetto, "Parallel implementation of an evolutionary-based automatic tool for microwave circuit synthesis: Preliminary results," Microwave and Optical Technology Letters, Vol. 35, No. 3, Nov. 2002.

19. Robinson, J. and R. Saami, "Particle swarm optimization in electromagnetics," IEEE Trans. Antennas Propagat., Vol. 52, No. 2, 397-407, 2004.
doi:10.1109/TAP.2004.823969

20. Kennedy, J., R. C. Eberhart, and Y. Shi, Swarm Intelligence, Morgan Kaufmann, San Francisco, 2001.

21. Clerc, M. and J. Kennedy, "The particle swarm explosion, stability, and convergence in a multidimensional complex space," IEEE Transactions on Evolutionary Computation, Vol. 6, No. 1, 58-73, 2002.
doi:10.1109/4235.985692

22. Azaro, R., M. Donelli, D. Franceschini, E. Zeni, and A. Massa, "Optimized synthesis of a miniaturized SARSAT band pre-fractal antenna," Microwave and Optical Technology Letters, Vol. 48, No. 11, 2205-2207, 2006.
doi:10.1002/mop.21922

23. Azaro, R., G. Boato, M. Donelli, A. Massa, and E. Zeni, "Design of a pre-fractal mono-polar antenna for 3.4-3.6 GHz Wi-Max band portable devices," IEEE Antennas and Wireless Propagation Letters, Vol. 5, No. 1, 116-119, Dec. 2006.
doi:10.1109/LAWP.2006.872427

24. Azaro, R., F. De Natale, E. Zeni, M. Donelli, and A. Massa, "Synthesis of a pre-fractal dual-band mono-polar antenna for GPS applications," IEEE Antennas and Wireless Propagation Letters, Vol. 5, No. 1, 361-364, Dec. 2006.
doi:10.1109/LAWP.2006.880695

25. Donelli, M., M. D. Rukanuzzaman, and C. Saavedra, "A methodology for the design of microwave systems and circuits using an evolutionary algorithm," Progress In Electromagnetic Research Letters, Vol. 31, 129-141, 2013.
doi:10.2528/PIERM13041607

26. Donelli, M., M. D. Rukanuzzaman, and C. Saavedra, "Design and optimization of a broadband X-band bidirectional," Microwave and Optical Technology Letter, Vol. 55, 1730-1735, 2013.
doi:10.1002/mop.27712

27. Donelli, M., R. Azaro, A. Massa, and M. Raffetto, "Unsupervised synthesis of microwave components by means of an evolutionary-based tool exploiting distributed computing resources," Progress In Electromagnetics Research, Vol. 56, 93-108, 2006.
doi:10.2528/PIER05010901