1 .TH create_bmp_for_symmetrical_stripline 1 "atlc-4.6.0 8th December 2003" "Dr. David Kirkby"
4 \fBcreate_bmp_for_symmetrical_stripline\fR - bitmap generator for thin conductor between two
5 infinite groundplanes (part of \fBatlc\fR)
7 \fBcreate_bmp_for_symmetrical_stripline [-v] W H w bitmapfile\fR
10 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.
11 The best documentation that was current at the time the version was produced should be found on your
12 hard drive, usually at
14 /usr/local/share/atlc/docs/html\-docs/index.html
16 although it might be elsewhere if
17 your system administrator chose to install the package elsewhere. Sometimes, errors are corrected
18 in the documentation and placed at http://atlc.sourceforge.net/ before a new release of atlc is
19 released. Please, if you notice a problem with the documentation - even spelling errors and typos,
23 \fBcreate_bmp_for_symmetrical_stripline\fR is a pre-processor for \fBatlc\fR, the finite difference
24 program that is used to calculate the
25 properties of a two-conductor electrical transmission line of arbitrary
26 cross section. The program \fBcreate_bmp_for_symmetrical_stripline\fR is used as a fast way of
27 generating bitmaps (there is no need to use a graphics program), for a
28 1 pixel thick conductor of width w, centrally located inside a pair of
29 groundplanes of width W and separation H. This has an exact analytical
30 answer, when the inner is infinitely thin and the width W is infinitely
31 wide. This theoretical impedance is also calculated by the create_bmp_for_symmetrical_stripline. It is therefore used
34 ----------------------------------------------------- ^
40 | <----------w-----------> | |
48 ----------------------------------------------------- v
50 <-------------------------W------------------------->
53 The parameters 'W' and 'H' and the inner dimensions of the outer conductor.
54 The outer dimensions of the inner conductor are 'w' and 'c'. The inner
55 conductor is assumed to rest on a dielectric (Er2) which is 'd' wide and
56 'h' tall. The dielectric is offset 'a' from the left hand side wall of the
57 outer conductor an the inner conductor is offset 'b' from the left hand
58 sidewall of the outer conductor. The whole region is surrounded by a
59 dielectric of relative permittivity 'Er1'. The dielectrics 'Er1' and
60 'Er2' can be different, or the same. If there is just an air dilectric,
61 then 'Er1' and 'Er2' will both be 1.0
64 The bitmaps produced by \fBcreate_bmp_for_symmetrical_stripline\fR are 24-bit bit colour bitmaps, as are required by \fBatlc\fR. Currently create_bmp_for_symmetrical_stripline only produces bitmaps with
65 white (vacuum) dielectrics.
70 Print the theoeretical impedance Zo. This only works if the width W is sufficiently
71 wide, otherwise atlc and the value printed here would disagree wildly.
77 create_bmp_for_circ_in_circ(1)
78 create_bmp_for_circ_in_rect(1)
79 create_bmp_for_microstrip_coupler(1)
80 create_bmp_for_rect_cen_in_rect(1)
81 create_bmp_for_rect_cen_in_rect_coupler(1)
82 create_bmp_for_rect_in_circ(1)
83 create_bmp_for_rect_in_rect(1)
84 create_bmp_for_stripline_coupler(1)
86 find_optimal_dimensions_for_microstrip_coupler(1)
90 http://atlc.sourceforge.net - Home page
92 http://sourceforge.net/projects/atlc - Download area
94 atlc-X.Y.Z/docs/html-docs/index.html - HTML docs
96 atlc-X.Y.Z/docs/qex-december-1996/atlc.pdf - theory paper
98 atlc-X.Y.Z/examples - examples