transline.h

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/*
 * transline.h - base for a transmission line class definition
 *
 * Copyright (C) 2005 Stefan Jahn <[email protected]>
 * Modifications 2018 for Kicad: Jean-Pierre Charras
 *
 * 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 version 2
 * of the License, or (at your option) any later 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 package; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */
 
#ifndef __TRANSLINE_H
#define __TRANSLINE_H
 
#include <gal/color4d.h>
 
#define TRANSLINE_OK 0
#define TRANSLINE_WARNING 1
#define TRANSLINE_ERROR 2
 
// IDs for lines parameters used in calculation:
// (Used to retrieve these parameters from UI.
// DUMMY_PRM is used to skip a param line in dialogs. It is not really a parameter
enum PRMS_ID
{
 UNKNOWN_ID = -1,
 EPSILONR_PRM, // dielectric constant
 TAND_PRM, // Dielectric Loss Tangent
 RHO_PRM, // Conductivity of conductor
 H_PRM, // height of substrate
 TWISTEDPAIR_TWIST_PRM, // Twists per length
 H_T_PRM,
 STRIPLINE_A_PRM, // Stripline : distance from line to top metal
 T_PRM, // thickness of top metal
 ROUGH_PRM,
 MUR_PRM, // magnetic permeability of substrate
 TWISTEDPAIR_EPSILONR_ENV_PRM,
 MURC_PRM, // magnetic permeability of conductor
 FREQUENCY_PRM, // Frequency of operation
 Z0_PRM, // characteristic impedance
 Z0_E_PRM,
 Z0_O_PRM,
 ANG_L_PRM, // Electrical length in angle
 PHYS_WIDTH_PRM,
 PHYS_DIAM_IN_PRM, // Inner diameter of cable
 PHYS_S_PRM, // width of gap between line and ground
 PHYS_DIAM_OUT_PRM, // Outer diameter of cable
 PHYS_LEN_PRM, // Length of cable
 DUMMY_PRM
};
 
 
// IDs for lines parameters used in calculation that are not given by the UI
enum EXTRA_PRMS_ID
{
 EXTRA_PRMS_START = DUMMY_PRM - 1,
 SIGMA_PRM, // Conductivity of the metal
 SKIN_DEPTH_PRM, // Skin depth
 LOSS_DIELECTRIC_PRM, // Loss in dielectric (dB)
 LOSS_CONDUCTOR_PRM, // Loss in conductors (dB)
 CUTOFF_FREQUENCY_PRM, // Cutoff frequency for higher order modes
 EPSILON_EFF_PRM, // Effective dielectric constant
 EXTRA_PRMS_COUNT,
};
 
class TRANSLINE
{
public:
 TRANSLINE();
 virtual ~TRANSLINE();
 
 const char* m_Name;
 void setProperty( enum PRMS_ID aPrmId, double aValue );
 double getProperty( enum PRMS_ID aPrmId );
 
 
 void getProperties();
 void checkProperties();
 void setResult( int, double, const char* );
 void setResult( int, const char* );
 bool isSelected( enum PRMS_ID aPrmId );
 
 void Init();
 virtual void synthesize();
 virtual void calc() {}
 
 virtual void calcAnalyze(){};
 
 virtual void calcSynthesize() {}
 
 virtual void showAnalyze() {}
 
 virtual void showSynthesize() {}
 
 virtual void show_results() {}
 
 void analyze();
 
 KIGFX::COLOR4D errCol = KIGFX::COLOR4D( 1, 0.63, 0.63, 1 );
 KIGFX::COLOR4D warnCol = KIGFX::COLOR4D( 1, 1, 0.57, 1 );
 KIGFX::COLOR4D okCol = KIGFX::COLOR4D( 1, 1, 1, 1 );
 
protected:
 double m_parameters[EXTRA_PRMS_COUNT];
 double len; // length of line
 double er_eff; // effective dielectric constant
 double ang_l; // Electrical length in angle
 
 bool minimizeZ0Error1D( double* );
 double skin_depth();
 void ellipke( double, double&, double& );
 double ellipk( double );
 void setErrorLevel( PRMS_ID, char );
};
 
#endif /* __TRANSLINE_H */