--- /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 gmail.com
+
+*/
+
+/* The following calculates the odd and even mode impedances between two
+zero thickness strips of width w, spaced a distance s between two
+groundplanes of spacing h. */
+#include "config.h"
+
+
+#define RATIO 8
+#include "definitions.h"
+#include "exit_codes.h"
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+double WW, HH, ww, Er1, Er2;
+static double ss;
+int W, H, s, w, verbose=FALSE;
+
+int main(int argc, char **argv)
+{
+ double er, return_error;
+ double Zodd, Zeven, Zo;
+ int bmp_size=DEFAULT_COUPLER_BMP_SIZE, q;
+ FILE *image_data_fp;
+ struct transmission_line_properties optimise;
+ struct transmission_line_properties not_used;
+
+ not_used.W=1; /* keep MipsPro compiler happy on IRIX */
+
+ while((q=get_options(argc,argv,"Cb:v")) != -1)
+ switch (q)
+ {
+ case 'C':
+ print_copyright((char *) "2002");
+ exit_with_msg_and_exit_code("",OKAY);
+ break;
+ case 'b':
+ bmp_size=atol(my_optarg);
+ break;
+ case 'v':
+ verbose++;
+ break;
+ }
+ if( bmp_size < 6 || (argc-my_optind != 5) || bmp_size>28)
+ {
+ usage_create_bmp_for_stripline_coupler();
+ exit_with_msg_and_exit_code("",PROGRAM_CALLED_WITH_WRONG_NUMBER_OF_ARGUMENTS);
+ }
+ HH=atof(argv[my_optind]);
+ ww=atof(argv[my_optind+1]);
+ ss=atof(argv[my_optind+2]);
+ if(HH<0 || ww <0 || ss<0)
+ {
+ fprintf(stderr,"Sorry, W, H and s must all be greater than 0\n");
+ exit_with_msg_and_exit_code("",DIMENSION_LESS_THAN_ZERO);
+ }
+ er=atof(argv[my_optind+3]);
+ Er1=er;
+ Er2=er;
+ if(er < 1.0)
+ {
+ fprintf(stderr,"Sorry, you can't have a dielectric constand Er of less than 1.0\n");
+ exit_with_msg_and_exit_code("Sorry, you can't have a dielectric constand Er of less than 1.0",PERMITTIVITY_LESS_THAN_1);
+ }
+ if( (image_data_fp=fopen(argv[my_optind+4],"wb")) ==NULL)
+ exit_with_msg_and_exit_code("Can't open binary file for writing",CANT_OPEN_FOR_WRITING);
+ WW=2.0*ww+ss+RATIO*HH;
+ optimise.float_values[0]=WW ; /* minimum width as a float*/
+ optimise.float_values[1]=HH; /* height in floats */
+ optimise.float_values[2]=ww; /* stripline width */
+ optimise.float_values[3]=ss; /* spacing between the strips */
+
+ optimise.importance[0]=NOT_IMPORTANT; /* W is non critical */
+ optimise.importance[1]=MOST_IMPORTANT; /* H is critical */
+ optimise.importance[2]=IMPORTANT; /* w is critical */
+ optimise.importance[3]=IMPORTANT; /* s is most critical */
+
+ optimise.odd_or_even[0]=DONT_CARE; /* W can be odd or even */
+ optimise.odd_or_even[1]=ODD; /* H must be even */
+ optimise.odd_or_even[2]=DONT_CARE; /* w can be odd or even */
+ optimise.odd_or_even[3]=DONT_CARE; /* s can be odd or even */
+
+ /* We will now optimise for the 4 parameters W, H, w and s, forcing H
+ to be odd, and not bothering what the width is, as long as its about
+ right. */
+
+ return_error=calculate_integer_values(&optimise, 4, bmp_size);
+ if(verbose >=2)
+ printf("error returned from calculate_integer_values=%g\n", return_error);
+ W=optimise.best[0];
+ H=optimise.best[1];
+ w=optimise.best[2];
+ s=optimise.best[3];
+ write_bitmap(image_data_fp, not_used);
+ if(verbose >= 1)
+ {
+ calculate_Zodd_and_Zeven(&Zodd, &Zeven, &Zo, ww, HH, ss, er);
+ printf("The actual dimensions you gave have theoretical imedances of:\n");
+ printf(" Zodd= %f Zeven= %f Zo= %f (Ohms) ww=%f HH=%f ss=%f er=%f\n\n", Zodd, Zeven, Zo,ww,HH,ss,er);
+ calculate_Zodd_and_Zeven(&Zodd, &Zeven, &Zo, (double) w, (double) H-10, (double) s, er);
+ printf("The bitmap produced (which approximates what you want) should have:\n");
+ printf(" Zodd= %f Zeven= %f Zo= %f (Ohms)\n", Zodd, Zeven, Zo);
+ }
+ return(OKAY);
+}
projects / debian / atlc / blobdiff