+++ /dev/null
-/* atlc - arbitrary transmission line calculator, for the analysis of
-transmission lines are directional couplers.
-
-Copyright (C) 2002. Dr. David Kirkby, PhD (G8WRB).
-
-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 package_version 2
-of the License, or (at your option) any later package_version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-USA.
-
-Dr. David Kirkby, e-mail drkirkby at ntlworld.com
-
-*/
-
-#include "config.h"
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
-#include "definitions.h"
-#include "exit_codes.h"
-
-extern double Er1, Er2;
-extern double Ers[];
-extern int colours[];
-
-void convert_create_create_bmp_for_coupled_microstrip_dimensions_to_integers(struct transmission_line_properties *pcb)
-{
- /* A number of paramters are set to -1, as otherwise the compiler
- complains they may be used unitialised. It is wise to check they
- are not -1 before assining a variable to their contents,
- but I can't be bothered. */
- int best_W=-1, best_H=-1, best_w=-1, best_s=-1, best_g=-1;
- int best_h=-1, best_t=-1;
- int min, max, lowest = 2500, highest=10000;
- int i;
- double max_gridsize, min_gridsize;
- double error, error_min=VERY_LARGE, gridsize=-1, best_grid_size=-1;
-
-
- /* scale grid size, according to a command line option */
- lowest*=(int) 0.5+pow(2.0,(double)pcb->bmp_size);
- highest*=(int) 0.5+pow(2.0,(double)pcb->bmp_size);
-
- max_gridsize=sqrt(pcb->WW*pcb->HH/(double )lowest); /* minimum dimension in m */
- min_gridsize=sqrt(pcb->WW*pcb->HH/(double )highest);
- if(pcb->WW>=pcb->HH)
- {
- min=pcb->WW/max_gridsize;
- max=pcb->WW/min_gridsize;
- }
- else
- {
- min=pcb->HH/max_gridsize;
- max=pcb->HH/min_gridsize;
- }
- if (pcb->verbose_level >= 2)
- printf("WW=%f HH=%f lowest=%d higherst = %d min=%d max=%d\n",pcb->WW,pcb->HH,lowest, highest, min, max);
- for(i=min;i<=max;++i)
- {
- /* Try various combinations for H,a,b,c, etc */
- if(pcb->W>pcb->H)
- gridsize=pcb->WW/i;
- else
- gridsize=pcb->HH/i;
- pcb->W=(int)(pcb->WW/gridsize + 0.5);
- pcb->H=(int)(pcb->HH/gridsize + 0.5);
- pcb->w=(int)(pcb->ww/gridsize + 0.5);
- pcb->s=(int)(pcb->ss/gridsize + 0.5);
- pcb->g=(int)(pcb->gg/gridsize + 0.5);
- pcb->h=(int)(pcb->hh/gridsize + 0.5);
- pcb->t=(int)(pcb->tt/gridsize + 0.5);
- error=0.0;
- /*error+=pow((pcb->WW-pcb->W*gridsize)/pcb->WW,2.0); */ /* relative error in W */
- /*error+=pow((pcb->HH-pcb->H*gridsize)/pcb->HH,2.0); */
- if(pcb->w>0)
- error+=pow((pcb->ww-pcb->w*gridsize)/pcb->ww,2.0);
- if(pcb->s>0)
- error+=pow((pcb->ss-pcb->s*gridsize)/pcb->ss,2.0);
- if(pcb->g>0)
- error+=pow((pcb->gg-pcb->g*gridsize)/pcb->gg,2.0);
- if(pcb->h>0)
- error+=pow((pcb->hh-pcb->h*gridsize)/pcb->hh,2.0);
- if(pcb->t>0)
- error+=pow((pcb->tt-pcb->t*gridsize)/pcb->tt,2.0);
- if(error < (error_min-TINY))
- {
- error_min=error;
- best_W=pcb->W;
- best_H=pcb->H;
- best_w=pcb->w;
- best_s=pcb->s;
- best_g=pcb->g;
- best_h=pcb->h;
- best_t=pcb->t;
- best_grid_size=gridsize;
- }
- }
- pcb->W=best_W;
- pcb->H=best_H;
- pcb->w=best_w;
- pcb->s=best_s;
- pcb->g=best_g;
- pcb->h=best_h;
- pcb->t=best_t;
- if(pcb->verbose_level > 0)
- {
- fprintf(stderr,"error_min=%.16f\n",error_min);
- fprintf(stderr,"User requested: W=%f H=%f w=%f s=%f g=%f h=%f t=%f Er1=%f Er2=%f\n\n",pcb->WW,pcb->HH,pcb->ww,pcb->ss,pcb->gg,pcb->hh,pcb->tt,Er1,Er2);
- fprintf(stderr,"Internally the program is using the following grid:\n");
- fprintf(stderr,"W=%d H=%d w=%d s=%d g=%d h=%d t=%d\nThe grid size is %f mm, inches or whatever\n\n", pcb->W, pcb->H, pcb->w, pcb->s, pcb->g,pcb->h, pcb->t,best_grid_size);
- if(error_min > TINY)
- {
- fprintf(stderr,"This means we are simulating a transmission line with these dimensions:\n");
- fprintf(stderr,"W=%f H=%f w=%f s=%f g=%f h=%f t=%f (mm, inches or whatever)\n",pcb->W*best_grid_size,pcb->H*best_grid_size,pcb->w*best_grid_size,pcb->s*best_grid_size,pcb->g*best_grid_size,pcb->h*best_grid_size,pcb->t*best_grid_size);
- fprintf(stderr,"\nThese are slightly different to what you indicated on the command line,\n");
- fprintf(stderr,"but they are the best approximation possible, given the grid size\n");
- }
- }
- if(pcb->s == 0)
- {
- fprintf(stderr,"Error #12. The gap between the two conductors coupled lines (s) is too small. Either increase the bitmap size (-b option), or make s at least %f\n",gridsize);
- exit_with_msg_and_exit_code("",GAP_BETWEEN_CONDUCTORS_TOO_SMALL);
- }
- if(pcb->g == 0)
- {
- fprintf(stderr,"Error #13. The gap between the groundplane (g) and coupled lines is too small. Either increase the bitmap size (-b option), or make g at least %f\n",gridsize);
- exit_with_msg_and_exit_code("",GAP_BETWEEN_CONDUCTORS_TOO_SMALL);
- }
- if(pcb->h == 0)
- {
- fprintf(stderr,"Error #14. The thickness of the dielectric of Er2 (h) is too small. Either increase the bitmap size (-b option), or make h at least %f\n",gridsize);
- exit_with_msg_and_exit_code("",GAP_BETWEEN_CONDUCTORS_TOO_SMALL);
- }
- check_error(pcb->WW,pcb->W,best_grid_size,"W");
- check_error(pcb->HH,pcb->H,best_grid_size,"H");
- check_error(pcb->ww,pcb->w,best_grid_size,"w");
- check_error(pcb->ss,pcb->s,best_grid_size,"s");
- check_error(pcb->gg,pcb->g,best_grid_size,"g");
- check_error(pcb->hh,pcb->h,best_grid_size,"h");
- check_error(pcb->tt,pcb->t,best_grid_size,"t");
-}
projects / debian / atlc / blobdiff