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create_bmp_for_stripline_couGeneral Commandcreate_bmp_for_stripline_coupler(1)

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

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

       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 docu-
       mentation that was current at the time the version was produced	should
       be found	on your	hard drive, usually at
       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 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.

       create_bmp_for_stripline_coupler	 is  a pre-processor for atlc, the fi-
       nite 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  cre-
       ate_bmp_for_stripline_coupler's command line.

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

       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.

       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  com-

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

       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

       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)			  cre-
       ate_bmp_for_rect_in_circ(1)     create_bmp_for_rect_in_rect(1)	  cre-
       ate_bmp_for_symmetrical_stripline(1) design_coupler(1) find_optimal_di-
       mensions_for_microstrip_coupler(1) readbin(1)		  - Home page	  - 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

       Dr. David Kirkby	PhD, drkirkby at

       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  im-
       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 Soft-
       ware Foundation,	 Inc.,	59  Temple  Place  -  Suite  330,  Boston,  MA
       02111-1307, USA.

Dr. David Kirkby	   atlc-.4.6.0	6thcreate_bmp_for_stripline_coupler(1)


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