1. Bhattacharyya, A. K., Phased Array Antennas, John Wiley, 2006.
2. Butler, J. L. and R. Lowe, "Beam forming matrix simplifies design of electronically scanned antennas," Electronic Design, Vol. 9, 170-173, Apr. 12, 1961.
3. Levy, R., "High power X-band butler matrix simplifies," Microwave J., Vol. 27, 153, Apr. 1984.
4. Willington, J. R., "Analysis, design and performance of a microstrip butler matrix," Proc. European Microwave Conference, Brussels, Belgium, Sept. 1973.
5. Blass, J., "Multi-directional antenna — A new approach to stacked beams," IRE Nat. Conv. Record, Pt. 1, 48--60, 1960.
6. Mosca, S., F. Bilotti, A. Toscano, and L. Vegni, "A novel design method for blass matrix beam-forming network," IEEE Trans. for Antennas and Propagation, Vol. 50, 225-232, Feb. 2002.
doi:10.1109/8.997999
7. Steyskal, H. and J. F. Rose, "Digital beam forming for radar," IEE Proc., Vol. 127, Pt. F, No. 4, Aug. 1980.
8. Dessouky, M., H. Sharshar, and Y. Albagory, "A novel tapered beamforming window for uniform concentric circular arrays," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 3, 409-415, 2006.
doi:10.1163/156939306775701786
9. Dessouky, M., H. Sharshar, and Y. Albagory, "Improving the cellular coverage from a high altitude platform by novel tapered beamforming technique," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 13, 1721-1731, 2007.
10. Liu, W. and R. Langley, "Adaptive wideband beamforming with combined spatial/temporal subband decomposition," PIERS Online, Vol. 3, No. 7, 2007.
11. Liao, G. S., H. Q. Liu, and J. Li, "A subspace-based robust adaptive capon beamforming," PIERS Online, Vol. 2, No. 4, 374-379, Mar. 26--29, 2006.
doi:10.2529/PIERS050906114239
12. Singh, A. Kr., P. Kumar, T. Chakravarty, G. Singh, and S. Bhooshan, "A novel digital beamformer with low angle resolution for vehicle tracking radar," Progress In Electromagnetics Research, Vol. 66, 229-237, 2006.
doi:10.2528/PIER06112102
13. Fakoukakis, F. E., S. G. Diamantis, A. P. Orfanides, and G. A. Kyriacou, "Development of an adaptive and a switched beam smart antenna system for wireless communications," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 3, 399-408, 2006.
doi:10.1163/156939306775701722
14. Wilkinson, E. J., "An N-way hybrid power divider," IRE Trans. Microwave Theory Tech., Vol. 8, 116-118, Jan. 1960.
doi:10.1109/TMTT.1960.1124668
15. Lim, S., S.-W. Lee, C.-S. Kim, J.-S. Park, D. Ahn, and S.-W. Nam, "A 4 : 1 unequal wilkinson power divider," IEEE Microwave and Wireless Components Letters, Vol. 11, No. 3, 124-126, Mar. 2001.
doi:10.1109/7260.915624
16. Lim, J.-S., G.-Y. Lee, Y.-C. Jeong, D. Ahn, and K.-S. Choi, "A 1 : 6 unequal wilkinson power divider," 36th European Microwave Conference Proceedings, 200-203, Manchester, Sept. 2006.
17. Gu, Y.-J., Z.-G. Shi, K. S. Chen, and Y. Li, "Robust adaptive beamforming for a class of Gaussian steering vector mismatch," Progress In Electromagnetics Research, Vol. 81, 315-328, 2008.
doi:10.2528/PIER08010202
18. Sanyal, S. K., Q. M. Alfred, T. Chakravarty, "A novel schematic for calibration of large phased array antenna using programmable time-delay units," Progress In Electromagnetics Research, Vol. 65, 81-91, 2006.
19. Sanyal, S. K., Q. M. Alfred, and T. Chakravarty, "A novel beamswitching algorithm for programmable phased array antenna," Progress In Electromagnetics Research, Vol. 60, 187-196, 2006.
doi:10.2528/PIER05122502
20. Mouhamadou, M., P. Vaudon, and M. Rammal, "Smart antenna array patterns synthesis: Null steering and multi-user beamforming by phase control," Progress In Electromagnetics Research, Vol. 60, 95-106, 2006.
doi:10.2528/PIER05112801
21. Song, M. and T. Hong, "Sum and difference multiple beam modulation transmitted by multimode horn antenna for inverse monopulse direction-finding," Progress In Electromagnetics Research, Vol. 82, 367-380, 2008.
doi:10.2528/PIER08032407
22. Varlamos, P. K. and C. N. Capsalis, "Electronic beam steering using switched parasitic smart antenna arrays," Progress In Electromagnetics Research, Vol. 36, 101-119, 2002.
doi:10.2528/PIER01100302
23. Ismail, T. H., M. J. Mismar, and M. M. Dawoud, "Linear array pattern synthesis for wide band sector nulling," Progress In Electromagnetics Research, Vol. 21, 91-101, 1999.
doi:10.2528/PIER98040900
24. Eldek, A. A., "Design of double dipole antenna with enhanced usable bandwidth for wideband phased array applications," Progress In Electromagnetics Research, Vol. 59, 1-15, 2006.
doi:10.2528/PIER06012001
25. Sotiriou, A. I., P. K. Varlamos, P. T. Trakadas, and C. Capsalis, "Performance of a six-beam switched parasitic planar array under one path Rayleigh fading environment," Progress In Electromagnetics Research, Vol. 62, 89-106, 2006.
doi:10.2528/PIER06020204
26. Sotiriou, A. I., P. T. Trakadas, and C. Capsalis, "Uplink carrier-to-interference improvement in a cellular communication system when a six-beam switched parasitic array is implemented," Progress In Electromagnetics Research B, Vol. 5, 303-321, 2008.
doi:10.2528/PIERB08012704
27. Yuan, H.-W., S.-X. Gong, P.-F. Zhang, and X. Wang, "Wide scanning phased array antenna using printed dipole antennas with parasitic element ," Progress In Electromagnetics Research Letters, Vol. 2, 187-193, 2008.
doi:10.2528/PIERL08011602