create_bmp..._stripline(1)

📦 version 4.6.1, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu resolute, ubuntu stonking

🦋 create_bmp_for_symmetrical_stripline 🦋

okay so bestie, welcome to section 1 of the General Commands Manual, and the star of the show today is create_bmp_for_symmetrical_stripline. she's part of the atlc family, she makes bitmaps, and honestly? she eats. let's get into it 💅

✨ NAME ✨

create_bmp_for_symmetrical_stripline — bitmap generator for thin conductor between two infinite groundplanes (she's part of atlc, obviously 🫶)

✨ SYNOPSIS ✨

create_bmp_for_symmetrical_stripline [-v] W H w bitmapfile

⚠️ WARNING ⚠️

no cap, this man page is not a complete set of documentation. the atlc project is just so complex that man pages are lowkey not the ideal way to document it — but out of completeness, man pages are produced anyway. 🙈

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 get corrected in the documentation and placed at http://atlc.sourceforge.net/ before a new release of atlc drops. so please, if you notice a problem with the documentation — even spelling errors and typos — please let me know. fr fr, even the tiny stuff 💀

🌈 DESCRIPTION 🌈

create_bmp_for_symmetrical_stripline is a pre-processor for atlc, the finite difference program that's used to calculate the properties of a two-conductor electrical transmission line of arbitrary cross section.

the way this program works is: it's a fast way of generating bitmaps (no need to open a graphics program, we love a shortcut ✨) for a 1 pixel thick conductor of width w, centrally located inside a pair of groundplanes of width W and separation H.

this setup has an exact analytical answer — but only when the inner is infinitely thin and the width W is infinitely wide. that theoretical impedance is also calculated by create_bmp_for_symmetrical_stripline. which is exactly why it's used as a test of atlc. she's the vibe check 👑

-----------------------------------------------------  ^
|                                                   |  |
|                                                   |  |
|              <----------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 theoretical impedance Zo. this only works if the width W is sufficiently wide — otherwise atlc and the value printed here would disagree wildly. 😭 so like, use her responsibly.

💜 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)

and the linkies, bestie 🌸

and that's the whole page, bestie — go make some bitmaps 💖✨

written by Dr. David Kirkby, and this is atlc-4.6.0, dated 8th December 2003. mwah, slay, periodt 🎀🦋

📦 where this page comes from