volume | PIER Journals

Abstract

Ultra Wideband (UWB), an impulse carrier waveform, was applied at HF-VHF frequencies to utilize surface wave propagation. Due to the low duty cycle of the pulse, the energy requirements are significantly reduced. UWB involves the propagation of transient pulses rather than continuous waves which makes the system easier to implement, inexpensive and small. The use of surface wave propagation (instead of commercial SHF UWB) extends the communication range. The waveform, transmitter, receiver, modulation and channel characteristics of the novel system design will be presented.

1. Federal Communications Commission "Revision of Part 15 of the commission's rules regarding ultra-wideband transmission systems," First Report and Order, No. 98-153, Feb. 2002.

2. Aiello, G. R. and G. D. Rogerson, "Ultra-wideband wireless systems," IEEE Microwave Magazine, 36-47, Jun. 2003.
doi:10.1109/MMW.2003.1201597

3. Schantz, H., Ultrawideband Antennas, Artech House, Norwood, 2005.

4. Pattan, B., "A brief exposure to ultra-wideband signaling," Microwave Journal, 104-110, Dec. 2003.

5. Pozar, D. M., "Waveform optimizations for ultrawideband radio systems," IEEE Trans. Antennas and Propagat., Vol. 51, No. 9, 2335-2345, Sep. 2003.
doi:10.1109/TAP.2003.816313

6. Yang, L. and G. B. Giannakis, "Ultra-wideband communications," IEEE Signal Processing Magazine, Nov. 2004.

7. Yeap, Y. W., O. M. Chai, and C. L. Law, "Evaluation of ultra wideband (UWB) signal transmission, propagation and reception with low cost UWB RF front end," 2004 RF and Microwave Conference, 5-6, Malaysia, Oct. 2004.

8. Yazdandoost, K. Y., "The ultra-wideband signal propagation," 47th IEEE International Symposium on Circuits and Systems, 645-648, Jul. 2004.

9. LaComb, J. and P. Mileski, "Ultra-wide band ground wave communications for a distributed sensor network," SPIE International Defense and Security Symposium, 2006.

10. LaComb, J., P. Mileski, and R. Ingram, "Ultra-wide band surface wave communication for a distributed sensor network," IEEE Int. Symp. on Antennas and Propagation, 33-36, 2007.
doi:10.1109/APS.2007.4395423

11. Fan, Z. G., L. X. Ran, and J. A. Kong, "Source pulse omptimizations for UWB radio systems," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 11, 1535-1550, 2006.
doi:10.1163/156939306779274309

12. Wait, J. R., "Electromagnetic surface waves," Advances in Radio Research, Vol. 1, 157-217, Academic Press, New York, 1964.

13. Collin, R. E., Antennas and Radiowave Propagation, Magraw-Hill, 1985.

14. Wait, J. R., "A note on the propagation of electromagnetic pulses over the earth's surface," Canada J. Physics, Vol. 40, 1264-1268, 1962.

15. Van der Pol, B., "On discontinuous electromagnetic waves and the occurrence of a surface wave," Electromagnetic Wave Theory Symposium, 288-293, 1956.

16. Levy, B. R. and J. B. Keller, "Propagation of electromagnetic pulses around the earth," IRE Trans. Antennas & Prop., Vol. 6, 56-61, 1958.
doi:10.1109/TAP.1958.1144554

17. Wait, J. R., "Ground wave attenuation function for a gaussian modulated carrier signal," Electronics Letters, Vol. 6, No. 4, 106-107, 1970.
doi:10.1049/el:19700072

18. Haddad, H. and D. C. Chang, "Transient electromagnetic field generated by a vertical electric dipole on the surface of a dissipative earth ," Radio Science, Vol. 16, No. 2, 169-177, 1981.
doi:10.1029/RS016i002p00169

19. Allen, B., M. Dohler, E. E. Okon, W. Q. Malik, A. K. Brown, and D. J. Edwards, Ultra-wideband Antennas and Propagation, John Wiley & Sons, 2007.

20. Bell Telephone Laboratories, Inc. "Propagation curves, Issue 3,", National Defense Research Committee, Division 15, Rpt. 966-6C, Oct. 1944.

21. International Telecommunications Union "Radio noise,", Rec. ITU-R P. 372-8, 2003.

Dr. Julie A. LaComb

Dr. Paul M. Mileski

Dr. Raymond F. Ingram