create_bmp_for_stripline_coupler(1)			      General Commands Manual			       create_bmp_for_stripline_coupler(1)

NAME

       create_bmp_for_stripline_coupler  -  bitmap  generator  for  coupler with thin striplines between two infinitely wide groundplanes (part of
       atlc)

SYNOPSIS

       create_bmp_for_stripline_coupler [-C] [-b bitmapsize] [-v] H w s Er outputfile

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 documentation - even spelling errors and typos, please let me know.

DESCRIPTION

       create_bmp_for_stripline_coupler is a pre-processor for atlc, the finite difference program that is used to calculate the properties  of  a
       two and three conductor electrical transmission lines of arbitrary cross section. The program create_bmp_for_stripline_coupler is used as a
       fast way of generating bitmaps (there is no need to use a graphics program), for a pair of 1 pixel thick conductors of width  w,  spaced  a
       distance  s  apart,  inside a pair of groundplanes of  separation H. This has an exact analytical answer, when the inner is infinitely thin
       and the overall width W is infinitely wide. This theoretical impedance is calculated and printed to stderr if the -v  option  is  given	on
       create_bmp_for_stripline_coupler's command line.

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

       The  overall width W is calculated internally to be large enough that making it any larger will have negligible effect on the results.  The
       dielectric is assumed that of vacuum.

       The bitmaps produced by create_bmp_for_stripline_coupler are 24-bit bit colour bitmaps, as are required by atlc.

OPTIONS

       -C
       Print the full copyright information and exit.

       -b bitmapsize
       is used to set the size of the bitmap, and so the accuracy to which atlc is able to calculate the coupler's properties. The  default  value
       for  'bitmapsize'  is normally 18 although this can be set at compile time. (see 'DEFAULT_COUPLER_BITMAP_SIZE' in definitions.h). The value
       can be set anywhere from 6 to 28. The size of bitmap produced will be between 2^(bitmapsize-1) and 2^(bitmapsize+1), so if its  set  to	28
       the bitmap could be as big as 512 Mb, which would take an eternity to compute.

       -v
       Print  some  extra  data  to stdout on the theoretical impedance of the structure. This is useful to compare with the numerical result from
       atlc

EXAMPLES

       In the first example, a standard coupler is created, where the

       eg1. create_bmp_for_stripline_coupler  1.23 0.7 1.2 1.0	coupler.bmp
       eg2. create_bmp_for_stripline_coupler -b 8 1.23 0.7 3.3	small.bmp
       eg3. create_bmp_for_stripline_coupler -v 12 1.23 0.7 4.8  theory.bmp

SEE ALSO

       atlc(1)	      create_bmp_for_circ_in_circ(1)	    create_bmp_for_circ_in_rect(1)	  create_bmp_for_microstrip_coupler(1)	      cre-
       ate_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_symmetrical_stripline(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

AUTHOR

       Dr. David Kirkby PhD, drkirkby at ntlworld.com

COPYRIGHT

       Copyright (c) 2002 Dr. David Kirkby.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the  Free  Software Foundation; either version 2 of the License, or (at your option) any later version.	This program is distributed in the
       hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or  FITNESS	FOR  A	PARTICULAR
       PURPOSE.   See  the GNU General Public License for more details.  You should have received a copy of the GNU General Public License (in the
       file COPYING) along with this program. You may get a full copy of it by running the program with the -C option. Otherwise you can write	to
       the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

Dr. David Kirkby					     atlc-.4.6.0  6th Dec 2003			       create_bmp_for_stripline_coupler(1)