Accession Number : ADA509645


Title :   On the Addition of EM Field Propagation and Coupling Effects in the BLT Equation. Revision


Descriptive Note : Research paper


Corporate Author : CLEMSON UNIV SC DEPT OF ELECTRICAL AND COMPUTER ENGINEERING


Personal Author(s) : Tesche, F M ; Butler, C M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a509645.pdf


Report Date : 08 Jun 2004


Pagination or Media Count : 44


Abstract : Recent developments in electromagnetic (EM) field sources producing high power microwave (HPM) or ultra wide-band (UWB) transient signals have led to a concern about the effects of these environments on modern digital systems. Such excitations, which collectively are referred to as high power electromagnetic (HPEM) fields, could be inadvertent, like the environment produced by a search radar illuminating a nearby aircraft, or intentional, such as a deliberate attack on a system by an adversary using an electromagnetic weapon. In either case, the effects of these HPEM fields may include system upset, and in some cases, permanent damage. This paper discusses the extension of the Baum-Liu-Tesche (BLT) equation to include the effects of propagating electromagnetic fields and their coupling to transmission line structures. The usual BLT equation describes the propagation of voltage (and current) waves along transmission lines. In the extended BLT formalism, both voltage and E-field quantities are treated together and this permits the addition of scatterers and apertures in the models.


Descriptors :   *MATHEMATICAL MODELS , *COUPLING(INTERACTION) , *ELECTROMAGNETIC SHIELDING , *ELECTROMAGNETIC WAVE PROPAGATION , *TRANSMISSION LINES , *ELECTROMAGNETIC FIELDS , *HIGH POWER , APERTURES , MICROWAVES , ELECTRICAL EQUIPMENT , ELECTROMAGNETIC SCATTERING , PENETRATION , ELECTRIC CONDUCTORS , PREDICTIONS , ELECTRIC CURRENT , DIGITAL SYSTEMS , BROADBAND , VOLTAGE


Subject Categories : Electrical and Electronic Equipment
      Electromagnetic Shielding
      Electricity and Magnetism
      Radiofrequency Wave Propagation


Distribution Statement : APPROVED FOR PUBLIC RELEASE