## NAME

         sym_strip - bitmap generator for thin conductor  betwen  two
         infinite groundplanes (part of atlc)

## SYNOPSIS

         sym_strip  W H w bitmapfile

## WARNING

         This man page is not a complete set  of  documentation.  See
         the  html  files for more complete information. So far, I've
         not managed to install the html files  into  /usr/local,  so
         you  will  have  to  look into the atlc-X.Y.Z/docs/html-docs
         directory for them.

## DESCRIPTION

         sym_strip is a pre-processor for atlc, the finite difference
         programme  that  is  used  to  calculate the properties of a
         two-conductor  electrical  transmission  line  of  arbitrary
         cross section. The programme sym_strip is used as a fast way
         of generating bitmaps (there is no need to  use  a  graphics
         programme),  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
         sym_strip. 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 sym_strip are 24-bit bit colour bit-
         maps,  as are required by atlc. Currenly sym_strip only pro-
         duces bitmaps with white (vacuum) dielectrics.

## OPTIONS

         There are no options for sym_strip.

## SEE ALSO

         atlc(1),        rect_cen_in_rect(1),        circ_in_circ(1).
         rect_in_rect(1),  circ_in_rect(1).   rect_in_circ(1),  read-
         bin(1) and sym_strip(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
         http://www.david-kirkby.co.uk              - my home page
         http://www.david-kirkby.co.uk/ham          - ham radio pages