create_bmp_for_symmetrical_stripline - bitmap generator for thin
conductor between two infinite groundplanes (part of
atlc)
create_bmp_for_symmetrical_stripline [-v] W H w bitmapfile
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.
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.
-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.
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