## Propagation of Electromagnetic Pulses

**DOI: http://dx.doi.org/10.12721/2237-5112.v01n01a03**

### Orlando R. Baiocchi^{1}

**Abstract:** This paper begins with a brief historical description of how electromagnetic waves were discovered, first theoretically and then experimentally, and how they were originally utilized for radio transmission. It addresses the relation between wireless and transmission line propagation and the approximations involved in the mathematical description of the propagation process. Since pulse transmission at faster rates have become a necessity in all communication and digital data systems, the problems associated with the propagation of such signals need to be addressed. The paper includes a brief description of the Linear Filter approach developed by the author to evaluate both quantitatively and qualitatively dispersion effects in optical and superconductive lines. Nonlinear effects are briefly described as difficult to analyze, but promising in terms of new applications. Power line surges, including nonlinear effects, are also described to include contributions from the author. More recent issues of interest include the potential problems associated with electromagnetic pulses produced by nuclear detonations and solar activity. Finally, the challenges posed by the Smart Grid are briefly addressed, including a novel application of transients to monitor energy consumption in the “Smart House”. References were chosen with the intent of emphasizing the contribution of Brazilian researchers and, whenever possible, giving preference to publications easily available on the web.

^{1} University of Washington, Tacoma, Washington, USA. E-mail: baiocchi@u.washington.edu

#### Literatura Citada

[1] http://hyperphysics.phy-astr.gsu.edu/hbase/waves/emwv.html

[2] http://www.landelldemoura.com.br

[3] http://www.4shared.com/document/iwZmMRfU/Fields_and_Waves_in_Communicat.html

[4] O. R. Baiocchi, "Modeling of Dispersion Effects in Optical Systems", Proceedings of the 1st Woodward Conf. on Wave Propagation, pp. 268-275, Springer-Verlag, New York-Berlin, 1989.

[5] O.R. Baiocchi, K. -S. Kong and T. Itoh, Pulse Propagation in Coplanar Superconducting Striplines", IEEE MTT Transactions, vol. 40, no. 3, pp. 509-514, March 1992.

[6] A. Papoulis, Linear System and Transforms with Application in Optics, 1981 Krieger Publisher Co.

[7] http://authors.library.caltech.edu/3622/1/AFSieeejssc05.pdf

[8] Hugo E. H. Figueroa, M. Z. Rached and E. Recami, Localized Waves, 2008, John Wiley & Sons, Inc.

[10] O. R. Baiocchi, M. V. Kritz and M. A. Raupp, Transmission Line Transient due to Corona and Dielectric Breakdown",, Proceedings. Of the 1983 URSI International Symposium on E. M. Theory, pp. 622-624, Santiago de Compostela, Spain, 1983.

[11] O.R. Baiocchi and M. A. Raupp, “Simulation of the Corona Effect in Transmission Lines", Proceedings of the V Congress on Applied and Computational Mathematics, pp. 102-104, Joao Pessoa, Brazil, 1982.

[12] S. Chen, B. Mulgrew, and P. M. Grant, “A clustering technique for digital communications channel equalization using radial basis function networks,” IEEE Trans. Neural Networks, vol. 4, pp. 570–578, Jul. 1993.

[13] http://www.history.navy.mil/library/online/hemp_hpm.htm

[14] http://www.empactamerica.org/general_emp.php

[16] http://www.cs.washington.edu/homes/sidhant/docs/ElectriSense_Journal.pdf