## NAME

         create_bmp_for_symmetrical_stripline - bitmap generator  for
         thin  conductor  between  two infinite groundplanes (part of
         atlc)

## SYNOPSIS

         create_bmp_for_symmetrical_stripline [-v] W H w bitmapfile

## WARNING

         This man page is not a complete set of documentation  -  the
         complexity  of the atlc project makes man pages not an ideal
         way to document it, although out of completeness, man  pages
         are produced. The best documentation that was current at the
         time the version was produced should be found on  your  hard
         drive, usually at
         /usr/local/share/atlc/docs/html-docs/index.html
         although it might be elsewhere if your system  administrator
         chose  to  install  the package elsewhere. Sometimes, errors
         are  corrected  in   the   documentation   and   placed   at
         http://atlc.sourceforge.net/ before a new release of atlc is
         released.  Please, if you notice a problem with the documen-
         tation - even spelling errors and typos, please let me know.

## DESCRIPTION

         create_bmp_for_symmetrical_stripline is a pre-processor  for
         atlc,  the  finite difference program that is used to calcu-
         late the properties of a two-conductor electrical  transmis-
         sion   line   of   arbitrary   cross  section.  The  program
         create_bmp_for_symmetrical_stripline is used as a  fast  way
         of  generating  bitmaps  (there is no need to use a graphics
         program), for a 1 pixel thick conductor  of  width  w,  cen-
         trally  located inside a pair of groundplanes of width W and
         separation H. This has an exact analytical answer, when  the
         inner is infinitely thin and the width W is infinitely wide.
         This  theoretical  impedance  is  also  calculated  by   the
         create_bmp_for_symmetrical_stripline.  It  is therefore used
         as a test of atlc.

         -----------------------------------------------------  ^
         |                                                   |  |
         |                                                   |  |
         |              <----------w----------->             |  |
         |                                                   |  H
         |                                                   |  |
         |                                                   |  |
         -----------------------------------------------------  v
         <-------------------------W------------------------->

         The parameters 'W' and 'H' and the inner dimensions  of  the
         outer  conductor.  The outer dimensions of the inner conduc-
         tor are 'w' and 'c'. The inner conductor is assumed to  rest
         on  a dielectric (Er2) which is 'd' wide and outer conductor
         an the inner conductor is offset  'b'  from  the  left  hand
         sidewall  of  the  outer conductor. The whole region is sur-
         rounded by a dielectric of relative permittivity 'Er1'.  The
         dielectrics 'Er1' and then 'Er1' and 'Er2' will both be 1.0

         The bitmaps produced by create_bmp_for_symmetrical_stripline
         are  24-bit  bit  colour  bitmaps,  as are required by atlc.
         Currently create_bmp_for_symmetrical_stripline only produces
         bitmaps with white (vacuum) dielectrics.

## OPTIONS

         -v
         Print the theoeretical impedance Zo. This only works if  the
         width  W  is sufficiently wide, otherwise atlc and the value
         printed here would disagree wildly.

## SEE ALSO

         atlc(1)                       create_bmp_for_circ_in_circ(1)
         create_bmp_for_circ_in_rect(1)
         create_bmp_for_microstrip_coupler(1)
         create_bmp_for_rect_cen_in_rect(1)
         create_bmp_for_rect_cen_in_rect_coupler(1)
         create_bmp_for_rect_in_circ(1)
         create_bmp_for_rect_in_rect(1)
         create_bmp_for_stripline_coupler(1)        design_coupler(1)
         find_optimal_dimensions_for_microstrip_coupler(1) readbin(1)

         http://atlc.sourceforge.net                - Home page
         http://sourceforge.net/projects/atlc       - Download area
         atlc-X.Y.Z/docs/html-docs/index.html       - HTML docs
         atlc-X.Y.Z/docs/qex-december-1996/atlc.pdf - theory paper
         atlc-X.Y.Z/examples                        - examples