NAME

       nec2, nec2small - Numerical Electromagnetics Code (Antenna Modelling Program)

SYNOPSIS

       nec2 [INPUT] [OUTPUT]
       nec2small [INPUT] [OUTPUT]

DESCRIPTION

       nec2,  is  a  versatile  numerical  Boundary  Element  Method (commonly called Method of Moments) antenna
       modelling code for the analysis of antennas and other metal structures.  It solves the integral equations
       for  the  currents  induced  on the structure by sources or incident fields.  The structure may either be
       excited by voltage sources on the structure, or by an incident plane wave of either  elliptic  or  linear
       polarisation.   The structure and excitation are described in the INPUT file and the output is written to
       OUTPUT.

OPTIONS

       Due to the age of the program, it expects input in the form of punched  cards  fed  into  a  hopper.   It
       currently does not accept any options.

       If  OUTPUT  is omitted, output is written to stdout and if INPUT and OUTPUT are omitted then the input is
       taken from stdin and the output written to stdout.

       The maximum size of problem which the code can handle must be hard coded at compile time and  no  dynamic
       memory  allocation  is  performed.   Two  versions are therefore provided suitable for different sizes of
       problem, nec2 is compiled for a maximum of 10000 wire segments and 5000 surface patches, while  nec2small
       is compiled for a maximum of 600 wire segments and 200 surface patches.

SEE ALSO

       somnec(1)

       The  NEC-2  code  is  fully  documented  in the report Numerical Electromagnetics Code (NEC) -- Method of
       Moments" by Burke and Poggio, which is available as a printed publication in  three  parts  covering  the
       theory  of  operation, the program code and the users' manual.  An updated form of the users' manual part
       of this report can be found in /usr/share/doc/nec/NECdoc

BUGS

       nec2 has been superseded by nec4, but this revised code has not been made available to the public, so  it
       is possible that some bugs remain in this version.

       Also  note  that  many variant source codes exist based on the original FORTRAN-IV listing in the report.
       This one is believed to be correctly working, but may still contain extra errors.

AUTHOR

       This manual page was written by  <alanb@chiark.greenend.org.uk>.  The program  was  developed  by  G.  J.
       Burke and A. J. Poggio of the Laurence Livermore Laboratory.

                                                                                                         NEC2(1)