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Numerical Electromagnetics Code (NEC)-Method of Moments. A User-Oriented Computer Code for Analysis of the Electromagnetic Response of Antennas and Other Metal Structures. Part I. Program Description-Theory. Part II. Program Description-Code. Part III. User's Guide. Revision.

ADA096982

Publication Date	1981
Personal Author	Burke, G. J.; Pogio, A. J.
Page Count	455
Abstract	The Numerical Electromagnetics Code (NEC-2) 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. The excitation may be an incident plane wave or a voltage source on a wire, while the output may include current and charge density, electric or magnetic field in the vicinity of the structure, and radiated fields. Other options compute the maximum coupling between antennas and facilitate structure input. Hence the code may be used for antenna analysis, EMP, or scattering studies. Part I of the document includes the equations on which the code is based and a discussion of the approximations and numerical methods used in the numerical solution. Some comparisons to demonstrate the range of accuracy of approximations are also included. Details of the coding and a User's Guide are provided as parts II and III, respectively. (Author)
Keywords	Electromagnetic scattering Antennas Antenna radiation patterns Method of moments Computerized simulation Electric wire Machine coding Mathematical models Electromagnetic induction Numerical analysis Greens function Electric fields User needs Plane waves Electromagnetic fields Charge density Integral equations Structures Magnetic fields NEC-2 computer program
Source Agency	Non Paid ADAS
NTIS Subject Category	46H - Radiofrequency Waves 49A - Antennas
Corporate Authors	Naval Ocean Systems Center, San Diego, CA.
Supplemental Notes	Revision to Rept. nos. NOSC/TD-116-PT-1/2 dated 18 Jul 77, AD-A075 289 and NOSC/TD-116-PT-3 dated 18 Jul 77, AD-A075 460.
Document Type	Technical Report
Title Note	Technical document.
NTIS Issue Number	198115

Numerical Electromagnetics Code (NEC)-Method of Moments. A User-Oriented Computer Code for Analysis of the Electromagnetic Response of Antennas and Other Metal Structures. Part I. Program Description-Theory. Part II. Program Description-Code. Part III. User's Guide. Revision.

Numerical Electromagnetics Code (NEC)-Method of Moments. A User-Oriented Computer Code for Analysis of the Electromagnetic Response of Antennas and Other Metal Structures. Part I. Program Description-Theory. Part II. Program Description-Code. Part III. User's Guide. Revision.
ADA096982

Publication Date	1981
Personal Author	Burke, G. J.; Pogio, A. J.
Page Count	455
Abstract	The Numerical Electromagnetics Code (NEC-2) 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. The excitation may be an incident plane wave or a voltage source on a wire, while the output may include current and charge density, electric or magnetic field in the vicinity of the structure, and radiated fields. Other options compute the maximum coupling between antennas and facilitate structure input. Hence the code may be used for antenna analysis, EMP, or scattering studies. Part I of the document includes the equations on which the code is based and a discussion of the approximations and numerical methods used in the numerical solution. Some comparisons to demonstrate the range of accuracy of approximations are also included. Details of the coding and a User's Guide are provided as parts II and III, respectively. (Author)
Keywords	Electromagnetic scattering Antennas Antenna radiation patterns Method of moments Computerized simulation Electric wire Machine coding Mathematical models Electromagnetic induction Numerical analysis Greens function Electric fields User needs Plane waves Electromagnetic fields Charge density Integral equations Structures Magnetic fields NEC-2 computer program
Source Agency	Non Paid ADAS
NTIS Subject Category	46H - Radiofrequency Waves 49A - Antennas
Corporate Authors	Naval Ocean Systems Center, San Diego, CA.
Supplemental Notes	Revision to Rept. nos. NOSC/TD-116-PT-1/2 dated 18 Jul 77, AD-A075 289 and NOSC/TD-116-PT-3 dated 18 Jul 77, AD-A075 460.
Document Type	Technical Report
Title Note	Technical document.
NTIS Issue Number	198115