Numerical Electromagnetic Code (NEC)

Burke, G.J.; Poggio, A.J.; Logan, J. C.; Rockway, J. W.

doi:10.1109/isemc.1979.7568787

Cited by 142 publications

(120 citation statements)

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“…Figure 3 shows the transient response of the induced current at the location B, obtained using the proposed method and the frequency domain NEC04 code [11] combined with the Inverse Fourier Transform.…”

Section: Simulation Resultsmentioning

confidence: 99%

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Electromagnetic Compatibility in Air Insulation Substation

et al. 2014

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Original scientific paperIn this work, transient coupling between the bus bars of the Air Insulation Substation (AIS) and the control cable located at its proximity is analyzed. The present study accounts for the real complex geometry of the bus bars and the finite conductivity of the soil. A time domain formulation of the problem is proposed in this work. The direct time domain formulation based on the use of Transmission Line (TL) theory and the Finite Difference Time Domain (FDTD) solution method. The excitations are given in the form of the localized current or voltage generator, respectively, and related electrical field radiated by bus bars. To ensure the electromagnetic compatibility (EMC) requirements the current induced in the transmission cable is analyzed by means of the Pencil Method that will allow one to identify the dominant frequencies in the interference signal. Various illustrative examples are given in the paper.

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Section: Simulation Resultsmentioning

confidence: 99%

“…Having validated the proposed method with NEC04 [11], one uses the parametric transformation by the method of pencils. This transformation provides us to reconstruct the response of the cable (the induced current) with a minimum number of frequencies and also allows us to define the modal energies.…”

Section: Simulation Resultsmentioning

confidence: 99%

Electromagnetic Compatibility in Air Insulation Substation

et al. 2014

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“…The result of using the Fresnel plane-wave reflection coefficient is also shown in figure 5 and, as expected, is accurate for h/X greater than about 0.1. The CPU time for evaluating all field components in equation (6) by the discrete image method on a DEC 3000/400 computer was 89 ps with 3 images for each potential and 283 ps with 10 images. For comparison, the time for a single evaluation by the NEC-2 interpolation is 7.2 p. The difference is mainly due to the number of complex exponentials that must be evaluated.…”

Section: Numerical Resultsmentioning

confidence: 99%

Evaluation of the discrete complex-image method for a NEC-like moment-method solution

Burke¹

1996

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“…The data in Figure 7 the fields and currents was also offered. However, modeling was performed using NEC [6] to an~yze an end-driven wire very close (h=5/8 inches) to a ground (8, = 6, c = 0.006 S/m) with a single strand of perfectly conducting rebar that was buried at six inches. The effects on the wire current distribution were negligible except when the wire and rebar were parallel and aligned in the vertical plane.…”

Section: The Acquired Datamentioning

confidence: 99%

NASA Boeing 757 HIRF test series low power on-the-ground tests

Poggio¹,

Pennock²,

Zacharias³

et al. 1996

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This documentwas preparedas an acmmrnt of work sponsoredby an qgency of the United StatesGovernment. Neither the United StatesGovernmentnor the Universityof California nor any of their employeq makesany warranty,expressor implied, or assumesany legal Iiabifity or responsibilityfor the accrwsq.completeness. or usefulness of qny inforrnatiom qpparatus.product.or process disclosed. or represents that i* IISSwouldnot infringe privatelyownedrights. Referenceherein to any specificcommercialproduct%~or Ser* im by tiade name. trademark,manufacturer, or otherwise, doesnot necessarily constitute or imply itsendorsement, recommendation or favoring by the United StatesGovernmentor the University of California. The wiews and opinions of quthors expressedherein do not necessarilystateor reflectthoseof the United StatesGovernmentor the Universityof Califorrri&and shall not bs rraed for advertisingor productendorsementpurposes.Work performedunder theauspices of the U.S. Departmentof Energy by LawrenceLivermoreSatiorralLaboratory under ContractW-7405-Eng-4S. ( SummaryThe data acquisition phase of a program intended to provide data for the validation of computational, analytical, and experimental techniques for the assessment of electromagnetic effects in commercial transports; for the checkout of instrumentation for following test programs; and for the support of protection engineering of airborne systems has been completed. Funded by the NASA Fly-ByLight/Power-By-Wire Program, the initial phase involved on-the-ground electromagnetic measurements using the NASA Boeing 757 and was executed in the LESLI Facility at the USAF Phillips Laborato~.The major participants in this project were LLNL, NASA Langley Research Center, Phillips Laboratory, and UIE, Inc. The tests were performed over a five week period during September through November, 1994. Measurements were made of the fields coupled into the aircraft interior and signals induced in select structures and equipment under controlled illumination by RF fields. A characterization of the ground was also performed to permit ground effects to be included in forthcoming validation exercises.This report and the associated test plan that is included as an appendix represent a definition of the overall on-the-ground test program. They include descriptions of the test rationale, test layout, and samples of the data. In this report, a detailed description of each executed testis provided, as is the data identification (data id) relating the specific test with its relevant data files. Samples of some inferences from the data that will be useful in protection engineering and EM effects mitigation are also presented.The test plan which guided the execution of the tests, a test report by UIE Inc., and the report describing the concrete pad characterization are included as appendices.1 Tables Table 4-1. Table 4-2. Table 6-1. Table 6-2a. Table 6-2b. Table 6-2c. Table 6-3. Table 6-4. Table 6-5. Table 6-6. Table 6-7. Table 6-8. Table 6-9. Table 6-10. Table 6-11. Table 6-12. Tab...

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Numerical Electromagnetic Code (NEC)

Cited by 142 publications

References 0 publications

Electromagnetic Compatibility in Air Insulation Substation

Electromagnetic Compatibility in Air Insulation Substation

Evaluation of the discrete complex-image method for a NEC-like moment-method solution

NASA Boeing 757 HIRF test series low power on-the-ground tests

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