References

• 1. 1)
     • 23. Hannan, M.A., Poli, L., Rocca, P., et al: ‘Pulse sequence optimization in time-modulated arrays for secure communications’. Int. Symp. Antennas and Propagation Society, APSURSI'16, IEEE, 2016, pp. 695–696.
  2. 2)
     • 27. Ding, Y., Fusco, V.: ‘Establishing metrics for assessing the performance of directional modulation systems’, IEEE Trans. Antennas Propag., 2014, 62, (5), pp. 2745–2755.
  3. 3)
     • 21. Wang, W., So, H.C., Farina, A.: ‘An overview on time/frequency modulated array processing’, IEEE J. Sel. Topics Signal Process., 2017, 11, (2), pp. 228–246.
  4. 4)
     • 17. Rocca, P., Zhu, Q., Bekele, E.T., et al: ‘4-D arrays as enabling technology for cognitive radio systems’, IEEE Trans. Antennas Propag., 2014, 62, (3), pp. 1102–1116.
  5. 5)
     • 30. Rahim, T.: ‘Directional pattern synthesis in circular arrays of directional antennas’. PhD thesis, Department of Electronic and Electrical Engineering, University College, London, August 1980.
  6. 6)
     • 16. Hong, T., Song, M.Z., Liu, Y.: ‘RF directional modulation technique using a switched antenna array for physical layer secure communication applications’, Prog. Electromagn. Res., 2011, 120, pp. 195–213.
  7. 7)
     • 20. Alotaibi, N., Hamdi, K.A.: ‘Switched phased-array transmission architecture for secure millimeter-wave wireless communication’, IEEE Trans. Commun., 2016, 64, (3), pp. 1303–1312.
  8. 8)
     • 3. Shi, H., Tennant, A.: ‘Simultaneous, multichannel, spatially directive data transmission using direct antenna modulation’, IEEE Trans. Antennas Propag., 2014, 62, (1), pp. 403–410.
  9. 9)
     • 10. Hu, J., Shu, F., Li, J.: ‘Robust synthesis method for secure directional modulation with imperfect direction angle’, IEEE Commun. Lett., 2016, 20, (6), pp. 1084–1087.
  10. 10)
      • 26. Sheleg, B.: ‘A matrix-fed circular array for continuous scanning’, Proc. IEEE, 1968, 56, (11), pp. 2016–2027.
  11. 11)
      • 8. Zhang, B., Liu, W., Gou, X.: ‘Compressive sensing based sparse antenna array design for directional modulation’, IET Microw. Antennas Propag., 2017, 11, (5), pp. 634–641.
  12. 12)
      • 12. Goel, S., Negi, R.: ‘Guaranteeing secrecy using artificial noise’, IEEE Trans. Wirel. Commun., 2008, 7, (6), pp. 2180–2189.
  13. 13)
      • 22. Ding, Y., Fusco, V.: ‘Development in directional modulation technology’, Forum for Electromagn. Res. Methods Appl. Technol., 2016, 13, pp. 1–7.
  14. 14)
      • 9. Ding, Y., Fusco, V.: ‘A vector approach for the analysis and synthesis of directional modulation transmitters’, IEEE Trans. Antennas Propag., 2014, 62, (1), pp. 361–370.
  15. 15)
      • 19. Zhu, Q., Yang, S., Yao, R., et al: ‘Directional modulation based on 4-D antenna arrays’, IEEE Trans. Antennas Propag., 2014, 62, (2), pp. 621–628.
  16. 16)
      • 7. Ding, Y., Fusco, V.: ‘Directional modulation far-field pattern separation synthesis approach’, IET Microw. Antennas Propag., 2015, 9, (1), pp. 41–48.
  17. 17)
      • 29. Toh, B.Y., Fusco, V., Buchanan, N.: ‘Assessment of performance limitations of PON retrodirective arrays’, IEEE Trans. Antennas Propag., 2002, 50, (10), pp. 1425–1432.
  18. 18)
      • 24. Carlin, M., Oliveri, G., Massa, A.: ‘Hybrid BCS-deterministic approach for sparse concentric ring isophoric arrays’, IEEE Trans. Antennas Propag., 2015, 63, (1), pp. 378–383.
  19. 19)
      • 5. Narbudowicz, A., Heberling, D., Ammann, M.J.: ‘Low-cost directional modulation for small wireless sensor nodes’. Proc. 10th Eur. Conf. Antennas Propag., Davos, Switzerland, April 2016, pp. 1–3.
  20. 20)
      • 15. Ding, Y., Fusco, V.: ‘A synthesis-free directional modulation transmitter using retrodirective array’, IEEE J. Sel. Topics Signal Process., 2017, 11, (2), pp. 428–441.
  21. 21)
      • 14. Ding, Y., Zhang, Y., Fusco, V.: ‘Fourier Rotman lens enabled directional modulation transmitter’, Int. J. Antennas Propag., 2015, 2015, pp. 1–13.
  22. 22)
      • 4. Ding, Y., Fusco, V.: ‘A review of directional modulation technology’, Int. J. Microw. Wirel. Technol., 2015, 8, (7), pp. 981–993.
  23. 23)
      • 6. Ding, Y., Fusco, V.: ‘Constraining directional modulation transmitter radiation patterns’, IET Microw. Antennas Propag., 2014, 8, (15), pp. 1408–1415.
  24. 24)
      • 2. Ding, Y., Fusco, V.: ‘BER-driven synthesis for directional modulation secured wireless communication’, Int. J. Microw. Wirel. Technol., 2014, 6, (02), pp. 139–149.
  25. 25)
      • 28. CST Microwave Studio Computer Simulation Technology, version 2016.
  26. 26)
      • 13. Zhang, Y., Ding, Y., Fusco, V.: ‘Sidelobe modulation scrambling transmitter using Fourier rotman lens’, IEEE Trans. Antennas Propag., 2013, 61, (7), pp. 3900–3904.
  27. 27)
      • 18. Valliappan, N., Lozano, A., Heath, R.W.: ‘Antenna subset modulation for secure millimeter-wave wireless communication’, IEEE Trans. Commun., 2013, 61, (8), pp. 3231–3245.
  28. 28)
      • 11. Ding, Y., Fusco, V.: ‘Orthogonal vector approach for synthesis of multi-beam directional modulation transmitters’, IEEE Antennas Wirel. Propag. Lett., 2015, 14, pp. 1330–1333.
  29. 29)
      • 1. Daly, M.P., Bernhard, J.T.: ‘Directional modulation technique for phased arrays’, IEEE Trans. Antennas Propag., 2009, 57, (9), pp. 2633–2640.
  30. 30)
      • 25. Bucci, O.M., Pinchera, D.: ‘A generalized hybrid approach for the synthesis of uniform amplitude pencil beam ring-arrays’, IEEE Trans. Antennas Propag., 2012, 60, (1), pp. 174–183.