NEC2. Method of Moments Antenna Modeling Code

Technical Report · Wed Feb 26 00:00:00 EST 1992

OSTI ID:145709

Burke, G J ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

The Numerical Electromagnetics Code (NEC2) is a computer code for analyzing the electromagnetic response of an arbitrary structure consisting of wires and surfaces in free space or over a ground plane. The analysis is accomplished by the numerical solution of integral equations for induced currents. The solution includes a numerical Green`s function for partitioned-matrix solution and a treatment for lossy grounds that is accurate for antennas very close to the ground surface. A model may include nonradiating networks and transmission lines connecting parts of the structure, perfect or imperfect conductors, and lumped-element loading. A structure may also be modeled over a ground plane that may be either a perfect or imperfect conductor. The excitation may be either voltage sources on the structure or an incident plane wave of linear or elliptic polarization. NEC2 is suited to either antenna analysis or scattering and EMP studies. Available output may include induced currents and charges, near electric or magnetic fields, and radiated fields. SOMNEC, an auxiliary program, generates the interpolation tables used by the NEC2 Sommerfeld/Norton ground option. The tables are written onto logical unit 21 by SOMNEC and read from unit 21 by NEC2 when the Sommerfeld/Norton ground option is exercised.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: Department of Defense, Washington, DC (United States)
• OSTI ID: 145709
• Report Number(s): ESTSC-000225C760000; NESC-9941
• Resource Relation: Other Information: PBD: 26 Feb 1992
• Country of Publication: United States
• Language: English

Related Subjects

99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
N CODES
ANTENNAS
COMPUTER PROGRAM DOCUMENTATION
COMPUTERIZED SIMULATION
ELECTROMAGNETIC RADIATION
ELECTROMAGNETIC PULSES
ELECTRIC FIELDS
GREEN FUNCTION
SOMMERFELD INTEGRALS
WIRES