kicad/pcb_calculator/transline/rectwaveguide.h

/*
 * rectwaveguide.h - rectangular waveguide  class definition
 *
 * Copyright (C) 2001 Gopal Narayanan <gopal@astro.umass.edu>
 * Copyright (C) 2005 Stefan Jahn <stefan@lkcc.org>
 * Modified for Kicad: 2015 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 __RECTWAVEGUIDE_H
#define __RECTWAVEGUIDE_H

class RECTWAVEGUIDE : public TRANSLINE
{
public: RECTWAVEGUIDE();

private:
    double mur;                 // magnetic permeability of substrate
    double tanm;                // Magnetic Loss Tangent
    double a;                   // width of waveguide
    double b;                   // height of waveguide
    double l;                   // length of waveguide
    double Z0;                  // characteristic impedance
    double Z0EH;                // characteristic impedance of field quantities*/
    double ang_l;               // Electrical length in angle
    double er_eff;              // Effective dielectric constant
    double mur_eff;             // Effective mag. permeability
    double atten_dielectric;    // Loss in dielectric (dB)
    double atten_cond;          // Loss in conductors (dB)
    double fc10;                // Cutoff frequency for TE10 mode

public:
    void   analyze() override;
    void   synthesize() override;

private:
    double kval_square();
    double kc_square( int, int );
    double fc( int, int );
    double alphac();
    double alphac_cutoff();
    double alphad();
    void   get_rectwaveguide_sub();
    void   get_rectwaveguide_comp();
    void   get_rectwaveguide_phys();
    void   get_rectwaveguide_elec();
    void   show_results();
};

#endif      // __RECTWAVEGUIDE_H