1. Kurokawa, K., "Injection locking of microwave solid state oscillator," Proc. IEEE, Vol. 61, 1386-1410, 1973.
doi:10.1109/PROC.1973.9293        Google Scholar

2. Ito, Y., et al. "Cavity stabilized X-band Gunn Oscillator," IEEE Transactions on Microwave Theory and Techniques, Vol. 18, 870-897, 1970.
doi:10.1109/TMTT.1970.1127367        Google Scholar

3. Holtzman, E. L. and R. S. Robertson, Solid State Microwave Power Oscillator Design, Chapters 2, 4 and 7, Artech House, Norwood, MA, 1992.

4. Solano, M. A., J. S. Ipina, J. M. Zamanillo, and C. P. Vega, "X-band Gunn diode oscillator for a multiple frequency continuous-wave radar for educational purposes," IEEE Transactions on Education, Vol. 45, 316-322, 2002.
doi:10.1109/TE.2002.804391        Google Scholar

5. Chakravorty, J., T. Banerjee, R. Ghatak, A. Bose, and B. C. Sarkar, "Generating chaos in injection-synchronized Gunn Oscillator: An experimental approach," IETE Journal of Research, Vol. 55, 106-111, 2009.
doi:10.4103/0377-2063.54894        Google Scholar

6. Ko, D. S., S. J. Lee, T. J. Baek, S. G. Choi, M. Han, H. C. Park, J. K. Rhee, J. H. Jung, and Y. W. Park, "New tuning method for 94 GHz waveguide voltage controlled oscillator," IEEE Microwave and Wireless Components Letters, Vol. 21, No. 3, Mar. 2011.
doi:10.1109/LMWC.2010.2103933        Google Scholar

7. Kao, C. H. and L. W. Chen, "A hydrodynamic equivalent circuit model for the Gunn diode," Solid-State Electronics, Vol. 46, 915-923, 2002.
doi:10.1016/S0038-1101(01)00347-1        Google Scholar

8. Pence, I. W. and P. J. Khan, "Broad band equivalent circuit determination of Gunn diodes," IEEE Transactions on Microwave Theory and Techniques, Vol. 18, No. 11, Nov. 1970.        Google Scholar

9. Shalatonin, V., "Modeling of the nonlinear dynamics in a Gunn chaos oscillator ," 18th Int. Crimean Conference in Microwave and Telecommunication Technology, Sevatopol, Crimea, Ukraine, Sep. 8-12, 2008.        Google Scholar

10. Hakki, B. W., "Amplification in two valley semiconductors," J. Applied Physics, Vol. 38, No. 2, 808-818, Feb. 1967.
doi:10.1063/1.1709417        Google Scholar

11. Shiau, Y. H., "Stochastic resonance in the Gunn effect," Physics Rev. B, Vol. 60, No. 23, 15534-15537.
doi:10.1103/PhysRevB.60.15534        Google Scholar

12. Mosekilde, E., et al. "Phase diagram for periodically driven Gunn diode," Physica D, Vol. 66, 143-153, 1993.
doi:10.1016/0167-2789(93)90232-P        Google Scholar

13. Lakshmanan, M. and S. Rajsekar, Non Linear Dynamics, Integrability, Chaos and Patterns, Springer, 2003.

14. Shiau, Y. H. and Y. C. Cheng, "Hybrid electric field domains leading to spatiotemporal chaos in N-GaAs," Physical Rev. B, Vol. 56, No. 15, 9247-9250, Oct. 1997.
doi:10.1103/PhysRevB.56.9247        Google Scholar

15. Mosekilde, E., et al. "Mode locking and spatio-temporal chaos in periodically driven Gunn diode," Physical Rev. B, Vol. 41, 2298-2306, 1990.
doi:10.1103/PhysRevB.41.2298        Google Scholar

16. Kao, Y. H., J. C. Huang, and Y. S. Gou, "Routes to chaos in du±ng oscillator with one potential well," IEEE International Symposium, Vol. 1, 265-268, 1988.

17. Novak, S. and R. G. Frehlich, "Transition to chaos in the duffing oscillator," Phys. Rev. A, Vol. 26, 3660-3663, 1982.
doi:10.1103/PhysRevA.26.3660        Google Scholar

18. Musielak, D. E., Z. E. Musielak, and J. W. Banner, "Chaos and route to chaos in coupled duffing oscillators with multiple degree of freedom," Science Direct, Vol. 24, 907-922, 2005.        Google Scholar

19. Sarkar, B. C., D. Sarkar, S. Sarkar, and J. Chakraborty, "Studies on the dynamics of bilaterally coupled X-band Gunn oscillators," Progress In Electromagnetics Research B, Vol. 32, 149-167, 2011.
doi:10.2528/PIERB11052201        Google Scholar

20. Jordan, D. W. and P. Smith, Nonlinear Ordinary Differential Equations; An Introduction for Scientists and Engineers, 4th Ed., Oxford University Press, 2009.

21. Hilborn, R. C., Chaos and Non Linear Dynamics, Oxford University Press, 2000.

22. Sprott, J. C., Chaos and Time Series Analysis, Oxford University Press, 2003.

23. Strogatz, S. H., Nonlinear Dynamics and Chaos, West View Press, 2007.

24. Sprott, J. C., Chaos Data Analyzer Package, Web address: http://sprott.physics.wisc.edu/cda.htm.

25. Ram, R. J., R. Sporer, H.-R. Blank, and R. A. York, "Chaotic dynamics in coupled microwave oscillators," IEEE Transactions on Microwave Theory and Techniques, Vol. 48, No. 11, 1909-1916, 2000.
doi:10.1109/22.883871        Google Scholar

26. Bulashenko, O. M., M. J. Garcia, and L. L. Bonilla, "Chaotic dynamics of electric-field domains in periodically driven superlattices ," Physical Rev. B, Vol. 53, No. 15, 10008-10018, 1996.
doi:10.1103/PhysRevB.53.10008        Google Scholar

27. Shi, Z. G. and L. X. Ran, "Microwave chaotic Colpitts oscillator: Design, implementation and applications," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 10, 1335-1349, 2006.
doi:10.1163/156939306779276802        Google Scholar

28. Stefanidis, V., O. Tsakiridis, E. Zervas, and J. Stonham, "Design of a microwave chaotic oscillator using symmetric active load," Latest Trends on Circuit, 2010.        Google Scholar

29. Jiang, T., S. Qiao, Z.-G. Shi, L. Peng, J. Huangfu, W.-Z. Cui, W. Ma, and L.-X. Ran, "Simulation and experimental evaluation of the radar signal performance of chaotic signals generated from a microwave Colpitts oscillator," Progress In Electromagnetics Research, Vol. 90, 15-30, 2009.
doi:10.2528/PIER08120104        Google Scholar

30. Nikishov, A. Y., "Generation of the microwave chaotic oscillations by CMOS structure," PIERS Proceedings, 457-461, Moscow, Russia, Aug. 18-21, 2009.        Google Scholar

31. Dmitriev, A. S., A. V. Kletsov, and L. V. Kuzmin, "Experimental generation of chaotic oscillations in microwave band by phase-locked loop," PIERS Proceedings, 1498-1502, Moscow, Russia, Aug. 18-21, 2009.        Google Scholar