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
documentation - 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 calculate the properties of a
two-conductor electrical transmission 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, centrally 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 conductor 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
surrounded 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
Dr. David Kirkby atlc-4.6.0 8thcreatebbmp2for_symmetrical_stripline(1)